/** | |
****************************************************************************** | |
* @file stm32h7xx_hal_usart.c | |
* @author MCD Application Team | |
* @brief USART HAL module driver. | |
* This file provides firmware functions to manage the following | |
* functionalities of the Universal Synchronous/Asynchronous Receiver Transmitter | |
* Peripheral (USART). | |
* + Initialization and de-initialization functions | |
* + IO operation functions | |
* + Peripheral Control functions | |
* + Peripheral State and Error functions | |
* | |
@verbatim | |
=============================================================================== | |
##### How to use this driver ##### | |
=============================================================================== | |
[..] | |
The USART HAL driver can be used as follows: | |
(#) Declare a USART_HandleTypeDef handle structure (eg. USART_HandleTypeDef husart). | |
(#) Initialize the USART low level resources by implementing the HAL_USART_MspInit() API: | |
(++) Enable the USARTx interface clock. | |
(++) USART pins configuration: | |
(+++) Enable the clock for the USART GPIOs. | |
(+++) Configure these USART pins as alternate function pull-up. | |
(++) NVIC configuration if you need to use interrupt process (HAL_USART_Transmit_IT(), | |
HAL_USART_Receive_IT() and HAL_USART_TransmitReceive_IT() APIs): | |
(+++) Configure the USARTx interrupt priority. | |
(+++) Enable the NVIC USART IRQ handle. | |
(++) USART interrupts handling: | |
-@@- The specific USART interrupts (Transmission complete interrupt, | |
RXNE interrupt and Error Interrupts) will be managed using the macros | |
__HAL_USART_ENABLE_IT() and __HAL_USART_DISABLE_IT() inside the transmit and receive process. | |
(++) DMA Configuration if you need to use DMA process (HAL_USART_Transmit_DMA() | |
HAL_USART_Receive_DMA() and HAL_USART_TransmitReceive_DMA() APIs): | |
(+++) Declare a DMA handle structure for the Tx/Rx channel. | |
(+++) Enable the DMAx interface clock. | |
(+++) Configure the declared DMA handle structure with the required Tx/Rx parameters. | |
(+++) Configure the DMA Tx/Rx channel. | |
(+++) Associate the initialized DMA handle to the USART DMA Tx/Rx handle. | |
(+++) Configure the priority and enable the NVIC for the transfer complete interrupt on the DMA Tx/Rx channel. | |
(#) Program the Baud Rate, Word Length, Stop Bit, Parity, and Mode | |
(Receiver/Transmitter) in the husart handle Init structure. | |
(#) Initialize the USART registers by calling the HAL_USART_Init() API: | |
(++) This API configures also the low level Hardware GPIO, CLOCK, CORTEX...etc) | |
by calling the customized HAL_USART_MspInit(&husart) API. | |
[..] | |
(@) To configure and enable/disable the USART to wake up the MCU from stop mode, resort to UART API's | |
HAL_UARTEx_StopModeWakeUpSourceConfig(), HAL_UARTEx_EnableStopMode() and | |
HAL_UARTEx_DisableStopMode() in casting the USART handle to UART type UART_HandleTypeDef. | |
##### Callback registration ##### | |
================================== | |
[..] | |
The compilation define USE_HAL_USART_REGISTER_CALLBACKS when set to 1 | |
allows the user to configure dynamically the driver callbacks. | |
[..] | |
Use Function @ref HAL_USART_RegisterCallback() to register a user callback. | |
Function @ref HAL_USART_RegisterCallback() allows to register following callbacks: | |
(+) TxHalfCpltCallback : Tx Half Complete Callback. | |
(+) TxCpltCallback : Tx Complete Callback. | |
(+) RxHalfCpltCallback : Rx Half Complete Callback. | |
(+) RxCpltCallback : Rx Complete Callback. | |
(+) TxRxCpltCallback : Tx Rx Complete Callback. | |
(+) ErrorCallback : Error Callback. | |
(+) AbortCpltCallback : Abort Complete Callback. | |
(+) RxFifoFullCallback : Rx Fifo Full Callback. | |
(+) TxFifoEmptyCallback : Tx Fifo Empty Callback. | |
(+) MspInitCallback : USART MspInit. | |
(+) MspDeInitCallback : USART MspDeInit. | |
This function takes as parameters the HAL peripheral handle, the Callback ID | |
and a pointer to the user callback function. | |
[..] | |
Use function @ref HAL_USART_UnRegisterCallback() to reset a callback to the default | |
weak (surcharged) function. | |
@ref HAL_USART_UnRegisterCallback() takes as parameters the HAL peripheral handle, | |
and the Callback ID. | |
This function allows to reset following callbacks: | |
(+) TxHalfCpltCallback : Tx Half Complete Callback. | |
(+) TxCpltCallback : Tx Complete Callback. | |
(+) RxHalfCpltCallback : Rx Half Complete Callback. | |
(+) RxCpltCallback : Rx Complete Callback. | |
(+) TxRxCpltCallback : Tx Rx Complete Callback. | |
(+) ErrorCallback : Error Callback. | |
(+) AbortCpltCallback : Abort Complete Callback. | |
(+) RxFifoFullCallback : Rx Fifo Full Callback. | |
(+) TxFifoEmptyCallback : Tx Fifo Empty Callback. | |
(+) MspInitCallback : USART MspInit. | |
(+) MspDeInitCallback : USART MspDeInit. | |
[..] | |
By default, after the @ref HAL_USART_Init() and when the state is HAL_USART_STATE_RESET | |
all callbacks are set to the corresponding weak (surcharged) functions: | |
examples @ref HAL_USART_TxCpltCallback(), @ref HAL_USART_RxHalfCpltCallback(). | |
Exception done for MspInit and MspDeInit functions that are respectively | |
reset to the legacy weak (surcharged) functions in the @ref HAL_USART_Init() | |
and @ref HAL_USART_DeInit() only when these callbacks are null (not registered beforehand). | |
If not, MspInit or MspDeInit are not null, the @ref HAL_USART_Init() and @ref HAL_USART_DeInit() | |
keep and use the user MspInit/MspDeInit callbacks (registered beforehand). | |
[..] | |
Callbacks can be registered/unregistered in HAL_USART_STATE_READY state only. | |
Exception done MspInit/MspDeInit that can be registered/unregistered | |
in HAL_USART_STATE_READY or HAL_USART_STATE_RESET state, thus registered (user) | |
MspInit/DeInit callbacks can be used during the Init/DeInit. | |
In that case first register the MspInit/MspDeInit user callbacks | |
using @ref HAL_USART_RegisterCallback() before calling @ref HAL_USART_DeInit() | |
or @ref HAL_USART_Init() function. | |
[..] | |
When The compilation define USE_HAL_USART_REGISTER_CALLBACKS is set to 0 or | |
not defined, the callback registration feature is not available | |
and weak (surcharged) callbacks are used. | |
@endverbatim | |
****************************************************************************** | |
* @attention | |
* | |
* <h2><center>© Copyright (c) 2017 STMicroelectronics. | |
* All rights reserved.</center></h2> | |
* | |
* This software component is licensed by ST under BSD 3-Clause license, | |
* the "License"; You may not use this file except in compliance with the | |
* License. You may obtain a copy of the License at: | |
* opensource.org/licenses/BSD-3-Clause | |
* | |
****************************************************************************** | |
*/ | |
/* Includes ------------------------------------------------------------------*/ | |
#include "stm32h7xx_hal.h" | |
/** @addtogroup STM32H7xx_HAL_Driver | |
* @{ | |
*/ | |
/** @defgroup USART USART | |
* @brief HAL USART Synchronous module driver | |
* @{ | |
*/ | |
#ifdef HAL_USART_MODULE_ENABLED | |
/* Private typedef -----------------------------------------------------------*/ | |
/* Private define ------------------------------------------------------------*/ | |
/** @defgroup USART_Private_Constants USART Private Constants | |
* @{ | |
*/ | |
#define USART_DUMMY_DATA ((uint16_t) 0xFFFF) /*!< USART transmitted dummy data */ | |
#define USART_TEACK_REACK_TIMEOUT 1000U /*!< USART TX or RX enable acknowledge time-out value */ | |
#define USART_CR1_FIELDS ((uint32_t)(USART_CR1_M | USART_CR1_PCE | USART_CR1_PS | \ | |
USART_CR1_TE | USART_CR1_RE | USART_CR1_OVER8 | \ | |
USART_CR1_FIFOEN )) /*!< USART CR1 fields of parameters set by USART_SetConfig API */ | |
#define USART_CR2_FIELDS ((uint32_t)(USART_CR2_CPHA | USART_CR2_CPOL | USART_CR2_CLKEN | \ | |
USART_CR2_LBCL | USART_CR2_STOP | USART_CR2_SLVEN | \ | |
USART_CR2_DIS_NSS)) /*!< USART CR2 fields of parameters set by USART_SetConfig API */ | |
#define USART_CR3_FIELDS ((uint32_t)(USART_CR3_TXFTCFG | USART_CR3_RXFTCFG )) /*!< USART or USART CR3 fields of parameters set by USART_SetConfig API */ | |
#define USART_BRR_MIN 0x10U /* USART BRR minimum authorized value */ | |
#define USART_BRR_MAX 0xFFFFU /* USART BRR maximum authorized value */ | |
/** | |
* @} | |
*/ | |
/* Private macros ------------------------------------------------------------*/ | |
/* Private variables ---------------------------------------------------------*/ | |
/* Private function prototypes -----------------------------------------------*/ | |
/** @addtogroup USART_Private_Functions | |
* @{ | |
*/ | |
#if (USE_HAL_USART_REGISTER_CALLBACKS == 1) | |
void USART_InitCallbacksToDefault(USART_HandleTypeDef *husart); | |
#endif /* USE_HAL_USART_REGISTER_CALLBACKS */ | |
static void USART_EndTransfer(USART_HandleTypeDef *husart); | |
static void USART_DMATransmitCplt(DMA_HandleTypeDef *hdma); | |
static void USART_DMAReceiveCplt(DMA_HandleTypeDef *hdma); | |
static void USART_DMATxHalfCplt(DMA_HandleTypeDef *hdma); | |
static void USART_DMARxHalfCplt(DMA_HandleTypeDef *hdma); | |
static void USART_DMAError(DMA_HandleTypeDef *hdma); | |
static void USART_DMAAbortOnError(DMA_HandleTypeDef *hdma); | |
static void USART_DMATxAbortCallback(DMA_HandleTypeDef *hdma); | |
static void USART_DMARxAbortCallback(DMA_HandleTypeDef *hdma); | |
static HAL_StatusTypeDef USART_WaitOnFlagUntilTimeout(USART_HandleTypeDef *husart, uint32_t Flag, FlagStatus Status, uint32_t Tickstart, uint32_t Timeout); | |
static HAL_StatusTypeDef USART_SetConfig(USART_HandleTypeDef *husart); | |
static HAL_StatusTypeDef USART_CheckIdleState(USART_HandleTypeDef *husart); | |
static void USART_TxISR_8BIT(USART_HandleTypeDef *husart); | |
static void USART_TxISR_16BIT(USART_HandleTypeDef *husart); | |
static void USART_TxISR_8BIT_FIFOEN(USART_HandleTypeDef *husart); | |
static void USART_TxISR_16BIT_FIFOEN(USART_HandleTypeDef *husart); | |
static void USART_EndTransmit_IT(USART_HandleTypeDef *husart); | |
static void USART_RxISR_8BIT(USART_HandleTypeDef *husart); | |
static void USART_RxISR_16BIT(USART_HandleTypeDef *husart); | |
static void USART_RxISR_8BIT_FIFOEN(USART_HandleTypeDef *husart); | |
static void USART_RxISR_16BIT_FIFOEN(USART_HandleTypeDef *husart); | |
/** | |
* @} | |
*/ | |
/* Exported functions --------------------------------------------------------*/ | |
/** @defgroup USART_Exported_Functions USART Exported Functions | |
* @{ | |
*/ | |
/** @defgroup USART_Exported_Functions_Group1 Initialization and de-initialization functions | |
* @brief Initialization and Configuration functions | |
* | |
@verbatim | |
=============================================================================== | |
##### Initialization and Configuration functions ##### | |
=============================================================================== | |
[..] | |
This subsection provides a set of functions allowing to initialize the USART | |
in asynchronous and in synchronous modes. | |
(+) For the asynchronous mode only these parameters can be configured: | |
(++) Baud Rate | |
(++) Word Length | |
(++) Stop Bit | |
(++) Parity: If the parity is enabled, then the MSB bit of the data written | |
in the data register is transmitted but is changed by the parity bit. | |
(++) USART polarity | |
(++) USART phase | |
(++) USART LastBit | |
(++) Receiver/transmitter modes | |
[..] | |
The HAL_USART_Init() function follows the USART synchronous configuration | |
procedure (details for the procedure are available in reference manual). | |
@endverbatim | |
Depending on the frame length defined by the M1 and M0 bits (7-bit, | |
8-bit or 9-bit), the possible USART formats are listed in the | |
following table. | |
Table 1. USART frame format. | |
+-----------------------------------------------------------------------+ | |
| M1 bit | M0 bit | PCE bit | USART frame | | |
|---------|---------|-----------|---------------------------------------| | |
| 0 | 0 | 0 | | SB | 8 bit data | STB | | | |
|---------|---------|-----------|---------------------------------------| | |
| 0 | 0 | 1 | | SB | 7 bit data | PB | STB | | | |
|---------|---------|-----------|---------------------------------------| | |
| 0 | 1 | 0 | | SB | 9 bit data | STB | | | |
|---------|---------|-----------|---------------------------------------| | |
| 0 | 1 | 1 | | SB | 8 bit data | PB | STB | | | |
|---------|---------|-----------|---------------------------------------| | |
| 1 | 0 | 0 | | SB | 7 bit data | STB | | | |
|---------|---------|-----------|---------------------------------------| | |
| 1 | 0 | 1 | | SB | 6 bit data | PB | STB | | | |
+-----------------------------------------------------------------------+ | |
* @{ | |
*/ | |
/** | |
* @brief Initialize the USART mode according to the specified | |
* parameters in the USART_InitTypeDef and initialize the associated handle. | |
* @param husart USART handle. | |
* @retval HAL status | |
*/ | |
HAL_StatusTypeDef HAL_USART_Init(USART_HandleTypeDef *husart) | |
{ | |
/* Check the USART handle allocation */ | |
if (husart == NULL) | |
{ | |
return HAL_ERROR; | |
} | |
/* Check the parameters */ | |
assert_param(IS_USART_INSTANCE(husart->Instance)); | |
if (husart->State == HAL_USART_STATE_RESET) | |
{ | |
/* Allocate lock resource and initialize it */ | |
husart->Lock = HAL_UNLOCKED; | |
#if (USE_HAL_USART_REGISTER_CALLBACKS == 1) | |
USART_InitCallbacksToDefault(husart); | |
if (husart->MspInitCallback == NULL) | |
{ | |
husart->MspInitCallback = HAL_USART_MspInit; | |
} | |
/* Init the low level hardware */ | |
husart->MspInitCallback(husart); | |
#else | |
/* Init the low level hardware : GPIO, CLOCK */ | |
HAL_USART_MspInit(husart); | |
#endif /* USE_HAL_USART_REGISTER_CALLBACKS */ | |
} | |
husart->State = HAL_USART_STATE_BUSY; | |
/* Disable the Peripheral */ | |
__HAL_USART_DISABLE(husart); | |
/* Set the Usart Communication parameters */ | |
if (USART_SetConfig(husart) == HAL_ERROR) | |
{ | |
return HAL_ERROR; | |
} | |
/* In Synchronous mode, the following bits must be kept cleared: | |
- LINEN bit in the USART_CR2 register | |
- HDSEL, SCEN and IREN bits in the USART_CR3 register.*/ | |
husart->Instance->CR2 &= ~USART_CR2_LINEN; | |
husart->Instance->CR3 &= ~(USART_CR3_SCEN | USART_CR3_HDSEL | USART_CR3_IREN); | |
/* Enable the Peripheral */ | |
__HAL_USART_ENABLE(husart); | |
/* TEACK and/or REACK to check before moving husart->State to Ready */ | |
return (USART_CheckIdleState(husart)); | |
} | |
/** | |
* @brief DeInitialize the USART peripheral. | |
* @param husart USART handle. | |
* @retval HAL status | |
*/ | |
HAL_StatusTypeDef HAL_USART_DeInit(USART_HandleTypeDef *husart) | |
{ | |
/* Check the USART handle allocation */ | |
if (husart == NULL) | |
{ | |
return HAL_ERROR; | |
} | |
/* Check the parameters */ | |
assert_param(IS_USART_INSTANCE(husart->Instance)); | |
husart->State = HAL_USART_STATE_BUSY; | |
husart->Instance->CR1 = 0x0U; | |
husart->Instance->CR2 = 0x0U; | |
husart->Instance->CR3 = 0x0U; | |
#if (USE_HAL_USART_REGISTER_CALLBACKS == 1) | |
if (husart->MspDeInitCallback == NULL) | |
{ | |
husart->MspDeInitCallback = HAL_USART_MspDeInit; | |
} | |
/* DeInit the low level hardware */ | |
husart->MspDeInitCallback(husart); | |
#else | |
/* DeInit the low level hardware */ | |
HAL_USART_MspDeInit(husart); | |
#endif /* USE_HAL_USART_REGISTER_CALLBACKS */ | |
husart->ErrorCode = HAL_USART_ERROR_NONE; | |
husart->State = HAL_USART_STATE_RESET; | |
/* Process Unlock */ | |
__HAL_UNLOCK(husart); | |
return HAL_OK; | |
} | |
/** | |
* @brief Initialize the USART MSP. | |
* @param husart USART handle. | |
* @retval None | |
*/ | |
__weak void HAL_USART_MspInit(USART_HandleTypeDef *husart) | |
{ | |
/* Prevent unused argument(s) compilation warning */ | |
UNUSED(husart); | |
/* NOTE : This function should not be modified, when the callback is needed, | |
the HAL_USART_MspInit can be implemented in the user file | |
*/ | |
} | |
/** | |
* @brief DeInitialize the USART MSP. | |
* @param husart USART handle. | |
* @retval None | |
*/ | |
__weak void HAL_USART_MspDeInit(USART_HandleTypeDef *husart) | |
{ | |
/* Prevent unused argument(s) compilation warning */ | |
UNUSED(husart); | |
/* NOTE : This function should not be modified, when the callback is needed, | |
the HAL_USART_MspDeInit can be implemented in the user file | |
*/ | |
} | |
#if (USE_HAL_USART_REGISTER_CALLBACKS == 1) | |
/** | |
* @brief Register a User USART Callback | |
* To be used instead of the weak predefined callback | |
* @param husart usart handle | |
* @param CallbackID ID of the callback to be registered | |
* This parameter can be one of the following values: | |
* @arg @ref HAL_USART_TX_HALFCOMPLETE_CB_ID Tx Half Complete Callback ID | |
* @arg @ref HAL_USART_TX_COMPLETE_CB_ID Tx Complete Callback ID | |
* @arg @ref HAL_USART_RX_HALFCOMPLETE_CB_ID Rx Half Complete Callback ID | |
* @arg @ref HAL_USART_RX_COMPLETE_CB_ID Rx Complete Callback ID | |
* @arg @ref HAL_USART_TX_RX_COMPLETE_CB_ID Rx Complete Callback ID | |
* @arg @ref HAL_USART_ERROR_CB_ID Error Callback ID | |
* @arg @ref HAL_USART_ABORT_COMPLETE_CB_ID Abort Complete Callback ID | |
* @arg @ref HAL_USART_RX_FIFO_FULL_CB_ID Rx Fifo Full Callback ID | |
* @arg @ref HAL_USART_TX_FIFO_EMPTY_CB_ID Tx Fifo Empty Callback ID | |
* @arg @ref HAL_USART_MSPINIT_CB_ID MspInit Callback ID | |
* @arg @ref HAL_USART_MSPDEINIT_CB_ID MspDeInit Callback ID | |
* @param pCallback pointer to the Callback function | |
* @retval HAL status | |
+ */ | |
HAL_StatusTypeDef HAL_USART_RegisterCallback(USART_HandleTypeDef *husart, HAL_USART_CallbackIDTypeDef CallbackID, pUSART_CallbackTypeDef pCallback) | |
{ | |
HAL_StatusTypeDef status = HAL_OK; | |
if (pCallback == NULL) | |
{ | |
/* Update the error code */ | |
husart->ErrorCode |= HAL_USART_ERROR_INVALID_CALLBACK; | |
return HAL_ERROR; | |
} | |
/* Process locked */ | |
__HAL_LOCK(husart); | |
if (husart->State == HAL_USART_STATE_READY) | |
{ | |
switch (CallbackID) | |
{ | |
case HAL_USART_TX_HALFCOMPLETE_CB_ID : | |
husart->TxHalfCpltCallback = pCallback; | |
break; | |
case HAL_USART_TX_COMPLETE_CB_ID : | |
husart->TxCpltCallback = pCallback; | |
break; | |
case HAL_USART_RX_HALFCOMPLETE_CB_ID : | |
husart->RxHalfCpltCallback = pCallback; | |
break; | |
case HAL_USART_RX_COMPLETE_CB_ID : | |
husart->RxCpltCallback = pCallback; | |
break; | |
case HAL_USART_TX_RX_COMPLETE_CB_ID : | |
husart->TxRxCpltCallback = pCallback; | |
break; | |
case HAL_USART_ERROR_CB_ID : | |
husart->ErrorCallback = pCallback; | |
break; | |
case HAL_USART_ABORT_COMPLETE_CB_ID : | |
husart->AbortCpltCallback = pCallback; | |
break; | |
case HAL_USART_RX_FIFO_FULL_CB_ID : | |
husart->RxFifoFullCallback = pCallback; | |
break; | |
case HAL_USART_TX_FIFO_EMPTY_CB_ID : | |
husart->TxFifoEmptyCallback = pCallback; | |
break; | |
case HAL_USART_MSPINIT_CB_ID : | |
husart->MspInitCallback = pCallback; | |
break; | |
case HAL_USART_MSPDEINIT_CB_ID : | |
husart->MspDeInitCallback = pCallback; | |
break; | |
default : | |
/* Update the error code */ | |
husart->ErrorCode |= HAL_USART_ERROR_INVALID_CALLBACK; | |
/* Return error status */ | |
status = HAL_ERROR; | |
break; | |
} | |
} | |
else if (husart->State == HAL_USART_STATE_RESET) | |
{ | |
switch (CallbackID) | |
{ | |
case HAL_USART_MSPINIT_CB_ID : | |
husart->MspInitCallback = pCallback; | |
break; | |
case HAL_USART_MSPDEINIT_CB_ID : | |
husart->MspDeInitCallback = pCallback; | |
break; | |
default : | |
/* Update the error code */ | |
husart->ErrorCode |= HAL_USART_ERROR_INVALID_CALLBACK; | |
/* Return error status */ | |
status = HAL_ERROR; | |
break; | |
} | |
} | |
else | |
{ | |
/* Update the error code */ | |
husart->ErrorCode |= HAL_USART_ERROR_INVALID_CALLBACK; | |
/* Return error status */ | |
status = HAL_ERROR; | |
} | |
/* Release Lock */ | |
__HAL_UNLOCK(husart); | |
return status; | |
} | |
/** | |
* @brief Unregister an UART Callback | |
* UART callaback is redirected to the weak predefined callback | |
* @param husart uart handle | |
* @param CallbackID ID of the callback to be unregistered | |
* This parameter can be one of the following values: | |
* @arg @ref HAL_USART_TX_HALFCOMPLETE_CB_ID Tx Half Complete Callback ID | |
* @arg @ref HAL_USART_TX_COMPLETE_CB_ID Tx Complete Callback ID | |
* @arg @ref HAL_USART_RX_HALFCOMPLETE_CB_ID Rx Half Complete Callback ID | |
* @arg @ref HAL_USART_RX_COMPLETE_CB_ID Rx Complete Callback ID | |
* @arg @ref HAL_USART_TX_RX_COMPLETE_CB_ID Rx Complete Callback ID | |
* @arg @ref HAL_USART_ERROR_CB_ID Error Callback ID | |
* @arg @ref HAL_USART_ABORT_COMPLETE_CB_ID Abort Complete Callback ID | |
* @arg @ref HAL_USART_RX_FIFO_FULL_CB_ID Rx Fifo Full Callback ID | |
* @arg @ref HAL_USART_TX_FIFO_EMPTY_CB_ID Tx Fifo Empty Callback ID | |
* @arg @ref HAL_USART_MSPINIT_CB_ID MspInit Callback ID | |
* @arg @ref HAL_USART_MSPDEINIT_CB_ID MspDeInit Callback ID | |
* @retval HAL status | |
*/ | |
HAL_StatusTypeDef HAL_USART_UnRegisterCallback(USART_HandleTypeDef *husart, HAL_USART_CallbackIDTypeDef CallbackID) | |
{ | |
HAL_StatusTypeDef status = HAL_OK; | |
/* Process locked */ | |
__HAL_LOCK(husart); | |
if (HAL_USART_STATE_READY == husart->State) | |
{ | |
switch (CallbackID) | |
{ | |
case HAL_USART_TX_HALFCOMPLETE_CB_ID : | |
husart->TxHalfCpltCallback = HAL_USART_TxHalfCpltCallback; /* Legacy weak TxHalfCpltCallback */ | |
break; | |
case HAL_USART_TX_COMPLETE_CB_ID : | |
husart->TxCpltCallback = HAL_USART_TxCpltCallback; /* Legacy weak TxCpltCallback */ | |
break; | |
case HAL_USART_RX_HALFCOMPLETE_CB_ID : | |
husart->RxHalfCpltCallback = HAL_USART_RxHalfCpltCallback; /* Legacy weak RxHalfCpltCallback */ | |
break; | |
case HAL_USART_RX_COMPLETE_CB_ID : | |
husart->RxCpltCallback = HAL_USART_RxCpltCallback; /* Legacy weak RxCpltCallback */ | |
break; | |
case HAL_USART_TX_RX_COMPLETE_CB_ID : | |
husart->TxRxCpltCallback = HAL_USART_TxRxCpltCallback; /* Legacy weak TxRxCpltCallback */ | |
break; | |
case HAL_USART_ERROR_CB_ID : | |
husart->ErrorCallback = HAL_USART_ErrorCallback; /* Legacy weak ErrorCallback */ | |
break; | |
case HAL_USART_ABORT_COMPLETE_CB_ID : | |
husart->AbortCpltCallback = HAL_USART_AbortCpltCallback; /* Legacy weak AbortCpltCallback */ | |
break; | |
case HAL_USART_RX_FIFO_FULL_CB_ID : | |
husart->RxFifoFullCallback = HAL_USARTEx_RxFifoFullCallback; /* Legacy weak RxFifoFullCallback */ | |
break; | |
case HAL_USART_TX_FIFO_EMPTY_CB_ID : | |
husart->TxFifoEmptyCallback = HAL_USARTEx_TxFifoEmptyCallback; /* Legacy weak TxFifoEmptyCallback */ | |
break; | |
case HAL_USART_MSPINIT_CB_ID : | |
husart->MspInitCallback = HAL_USART_MspInit; /* Legacy weak MspInitCallback */ | |
break; | |
case HAL_USART_MSPDEINIT_CB_ID : | |
husart->MspDeInitCallback = HAL_USART_MspDeInit; /* Legacy weak MspDeInitCallback */ | |
break; | |
default : | |
/* Update the error code */ | |
husart->ErrorCode |= HAL_USART_ERROR_INVALID_CALLBACK; | |
/* Return error status */ | |
status = HAL_ERROR; | |
break; | |
} | |
} | |
else if (HAL_USART_STATE_RESET == husart->State) | |
{ | |
switch (CallbackID) | |
{ | |
case HAL_USART_MSPINIT_CB_ID : | |
husart->MspInitCallback = HAL_USART_MspInit; | |
break; | |
case HAL_USART_MSPDEINIT_CB_ID : | |
husart->MspDeInitCallback = HAL_USART_MspDeInit; | |
break; | |
default : | |
/* Update the error code */ | |
husart->ErrorCode |= HAL_USART_ERROR_INVALID_CALLBACK; | |
/* Return error status */ | |
status = HAL_ERROR; | |
break; | |
} | |
} | |
else | |
{ | |
/* Update the error code */ | |
husart->ErrorCode |= HAL_USART_ERROR_INVALID_CALLBACK; | |
/* Return error status */ | |
status = HAL_ERROR; | |
} | |
/* Release Lock */ | |
__HAL_UNLOCK(husart); | |
return status; | |
} | |
#endif /* USE_HAL_USART_REGISTER_CALLBACKS */ | |
/** | |
* @} | |
*/ | |
/** @defgroup USART_Exported_Functions_Group2 IO operation functions | |
* @brief USART Transmit and Receive functions | |
* | |
@verbatim | |
=============================================================================== | |
##### IO operation functions ##### | |
=============================================================================== | |
[..] This subsection provides a set of functions allowing to manage the USART synchronous | |
data transfers. | |
[..] The USART supports master mode only: it cannot receive or send data related to an input | |
clock (SCLK is always an output). | |
[..] | |
(#) There are two modes of transfer: | |
(++) Blocking mode: The communication is performed in polling mode. | |
The HAL status of all data processing is returned by the same function | |
after finishing transfer. | |
(++) No-Blocking mode: The communication is performed using Interrupts | |
or DMA, These API's return the HAL status. | |
The end of the data processing will be indicated through the | |
dedicated USART IRQ when using Interrupt mode or the DMA IRQ when | |
using DMA mode. | |
The HAL_USART_TxCpltCallback(), HAL_USART_RxCpltCallback() and HAL_USART_TxRxCpltCallback() user callbacks | |
will be executed respectively at the end of the transmit or Receive process | |
The HAL_USART_ErrorCallback()user callback will be executed when a communication error is detected | |
(#) Blocking mode API's are : | |
(++) HAL_USART_Transmit() in simplex mode | |
(++) HAL_USART_Receive() in full duplex receive only | |
(++) HAL_USART_TransmitReceive() in full duplex mode | |
(#) Non-Blocking mode API's with Interrupt are : | |
(++) HAL_USART_Transmit_IT() in simplex mode | |
(++) HAL_USART_Receive_IT() in full duplex receive only | |
(++) HAL_USART_TransmitReceive_IT() in full duplex mode | |
(++) HAL_USART_IRQHandler() | |
(#) No-Blocking mode API's with DMA are : | |
(++) HAL_USART_Transmit_DMA() in simplex mode | |
(++) HAL_USART_Receive_DMA() in full duplex receive only | |
(++) HAL_USART_TransmitReceive_DMA() in full duplex mode | |
(++) HAL_USART_DMAPause() | |
(++) HAL_USART_DMAResume() | |
(++) HAL_USART_DMAStop() | |
(#) A set of Transfer Complete Callbacks are provided in Non_Blocking mode: | |
(++) HAL_USART_TxCpltCallback() | |
(++) HAL_USART_RxCpltCallback() | |
(++) HAL_USART_TxHalfCpltCallback() | |
(++) HAL_USART_RxHalfCpltCallback() | |
(++) HAL_USART_ErrorCallback() | |
(++) HAL_USART_TxRxCpltCallback() | |
(#) Non-Blocking mode transfers could be aborted using Abort API's : | |
(++) HAL_USART_Abort() | |
(++) HAL_USART_Abort_IT() | |
(#) For Abort services based on interrupts (HAL_USART_Abort_IT), a Abort Complete Callbacks is provided: | |
(++) HAL_USART_AbortCpltCallback() | |
(#) In Non-Blocking mode transfers, possible errors are split into 2 categories. | |
Errors are handled as follows : | |
(++) Error is considered as Recoverable and non blocking : Transfer could go till end, but error severity is | |
to be evaluated by user : this concerns Frame Error, Parity Error or Noise Error in Interrupt mode reception . | |
Received character is then retrieved and stored in Rx buffer, Error code is set to allow user to identify error type, | |
and HAL_USART_ErrorCallback() user callback is executed. Transfer is kept ongoing on USART side. | |
If user wants to abort it, Abort services should be called by user. | |
(++) Error is considered as Blocking : Transfer could not be completed properly and is aborted. | |
This concerns Overrun Error In Interrupt mode reception and all errors in DMA mode. | |
Error code is set to allow user to identify error type, and HAL_USART_ErrorCallback() user callback is executed. | |
@endverbatim | |
* @{ | |
*/ | |
/** | |
* @brief Simplex send an amount of data in blocking mode. | |
* @param husart USART handle. | |
* @param pTxData Pointer to data buffer. | |
* @param Size Amount of data to be sent. | |
* @param Timeout Timeout duration. | |
* @retval HAL status | |
*/ | |
HAL_StatusTypeDef HAL_USART_Transmit(USART_HandleTypeDef *husart, uint8_t *pTxData, uint16_t Size, uint32_t Timeout) | |
{ | |
uint8_t *ptxdata8bits; | |
uint16_t *ptxdata16bits; | |
uint32_t tickstart; | |
if (husart->State == HAL_USART_STATE_READY) | |
{ | |
if ((pTxData == NULL) || (Size == 0U)) | |
{ | |
return HAL_ERROR; | |
} | |
/* Process Locked */ | |
__HAL_LOCK(husart); | |
husart->ErrorCode = HAL_USART_ERROR_NONE; | |
husart->State = HAL_USART_STATE_BUSY_TX; | |
/* Init tickstart for timeout managment*/ | |
tickstart = HAL_GetTick(); | |
husart->TxXferSize = Size; | |
husart->TxXferCount = Size; | |
/* In case of 9bits/No Parity transfer, pTxData needs to be handled as a uint16_t pointer */ | |
if ((husart->Init.WordLength == USART_WORDLENGTH_9B) && (husart->Init.Parity == USART_PARITY_NONE)) | |
{ | |
ptxdata8bits = NULL; | |
ptxdata16bits = (uint16_t *) pTxData; | |
} | |
else | |
{ | |
ptxdata8bits = pTxData; | |
ptxdata16bits = NULL; | |
} | |
/* Check the remaining data to be sent */ | |
while (husart->TxXferCount > 0U) | |
{ | |
if (USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TXE, RESET, tickstart, Timeout) != HAL_OK) | |
{ | |
return HAL_TIMEOUT; | |
} | |
if (ptxdata8bits == NULL) | |
{ | |
husart->Instance->TDR = (uint16_t)(*ptxdata16bits & 0x01FFU); | |
ptxdata16bits++; | |
} | |
else | |
{ | |
husart->Instance->TDR = (uint8_t)(*ptxdata8bits & 0xFFU); | |
ptxdata8bits++; | |
} | |
husart->TxXferCount--; | |
} | |
if (USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TC, RESET, tickstart, Timeout) != HAL_OK) | |
{ | |
return HAL_TIMEOUT; | |
} | |
/* Clear Transmission Complete Flag */ | |
__HAL_USART_CLEAR_FLAG(husart, USART_CLEAR_TCF); | |
/* Clear overrun flag and discard the received data */ | |
__HAL_USART_CLEAR_OREFLAG(husart); | |
__HAL_USART_SEND_REQ(husart, USART_RXDATA_FLUSH_REQUEST); | |
__HAL_USART_SEND_REQ(husart, USART_TXDATA_FLUSH_REQUEST); | |
/* At end of Tx process, restore husart->State to Ready */ | |
husart->State = HAL_USART_STATE_READY; | |
/* Process Unlocked */ | |
__HAL_UNLOCK(husart); | |
return HAL_OK; | |
} | |
else | |
{ | |
return HAL_BUSY; | |
} | |
} | |
/** | |
* @brief Receive an amount of data in blocking mode. | |
* @note To receive synchronous data, dummy data are simultaneously transmitted. | |
* @param husart USART handle. | |
* @param pRxData Pointer to data buffer. | |
* @param Size Amount of data to be received. | |
* @param Timeout Timeout duration. | |
* @retval HAL status | |
*/ | |
HAL_StatusTypeDef HAL_USART_Receive(USART_HandleTypeDef *husart, uint8_t *pRxData, uint16_t Size, uint32_t Timeout) | |
{ | |
uint8_t *prxdata8bits; | |
uint16_t *prxdata16bits; | |
uint16_t uhMask; | |
uint32_t tickstart; | |
if (husart->State == HAL_USART_STATE_READY) | |
{ | |
if ((pRxData == NULL) || (Size == 0U)) | |
{ | |
return HAL_ERROR; | |
} | |
/* Process Locked */ | |
__HAL_LOCK(husart); | |
husart->ErrorCode = HAL_USART_ERROR_NONE; | |
husart->State = HAL_USART_STATE_BUSY_RX; | |
/* Init tickstart for timeout managment*/ | |
tickstart = HAL_GetTick(); | |
husart->RxXferSize = Size; | |
husart->RxXferCount = Size; | |
/* Computation of USART mask to apply to RDR register */ | |
USART_MASK_COMPUTATION(husart); | |
uhMask = husart->Mask; | |
/* In case of 9bits/No Parity transfer, pRxData needs to be handled as a uint16_t pointer */ | |
if ((husart->Init.WordLength == USART_WORDLENGTH_9B) && (husart->Init.Parity == USART_PARITY_NONE)) | |
{ | |
prxdata8bits = NULL; | |
prxdata16bits = (uint16_t *) pRxData; | |
} | |
else | |
{ | |
prxdata8bits = pRxData; | |
prxdata16bits = NULL; | |
} | |
/* as long as data have to be received */ | |
while (husart->RxXferCount > 0U) | |
{ | |
if (husart->SlaveMode == USART_SLAVEMODE_DISABLE) | |
{ | |
/* Wait until TXE flag is set to send dummy byte in order to generate the | |
* clock for the slave to send data. | |
* Whatever the frame length (7, 8 or 9-bit long), the same dummy value | |
* can be written for all the cases. */ | |
if (USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TXE, RESET, tickstart, Timeout) != HAL_OK) | |
{ | |
return HAL_TIMEOUT; | |
} | |
husart->Instance->TDR = (USART_DUMMY_DATA & (uint16_t)0x0FF); | |
} | |
/* Wait for RXNE Flag */ | |
if (USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_RXNE, RESET, tickstart, Timeout) != HAL_OK) | |
{ | |
return HAL_TIMEOUT; | |
} | |
if (prxdata8bits == NULL) | |
{ | |
*prxdata16bits = (uint16_t)(husart->Instance->RDR & uhMask); | |
prxdata16bits++; | |
} | |
else | |
{ | |
*prxdata8bits = (uint8_t)(husart->Instance->RDR & (uint8_t)(uhMask & 0xFFU)); | |
prxdata8bits++; | |
} | |
husart->RxXferCount--; | |
} | |
/* Clear SPI slave underrun flag and discard transmit data */ | |
if (husart->SlaveMode == USART_SLAVEMODE_ENABLE) | |
{ | |
__HAL_USART_CLEAR_UDRFLAG(husart); | |
__HAL_USART_SEND_REQ(husart, USART_TXDATA_FLUSH_REQUEST); | |
} | |
/* At end of Rx process, restore husart->State to Ready */ | |
husart->State = HAL_USART_STATE_READY; | |
/* Process Unlocked */ | |
__HAL_UNLOCK(husart); | |
return HAL_OK; | |
} | |
else | |
{ | |
return HAL_BUSY; | |
} | |
} | |
/** | |
* @brief Full-Duplex Send and Receive an amount of data in blocking mode. | |
* @param husart USART handle. | |
* @param pTxData pointer to TX data buffer. | |
* @param pRxData pointer to RX data buffer. | |
* @param Size amount of data to be sent (same amount to be received). | |
* @param Timeout Timeout duration. | |
* @retval HAL status | |
*/ | |
HAL_StatusTypeDef HAL_USART_TransmitReceive(USART_HandleTypeDef *husart, uint8_t *pTxData, uint8_t *pRxData, uint16_t Size, uint32_t Timeout) | |
{ | |
uint8_t *prxdata8bits; | |
uint16_t *prxdata16bits; | |
uint8_t *ptxdata8bits; | |
uint16_t *ptxdata16bits; | |
uint16_t uhMask; | |
uint16_t rxdatacount; | |
uint32_t tickstart; | |
if (husart->State == HAL_USART_STATE_READY) | |
{ | |
if ((pTxData == NULL) || (pRxData == NULL) || (Size == 0U)) | |
{ | |
return HAL_ERROR; | |
} | |
/* Process Locked */ | |
__HAL_LOCK(husart); | |
husart->ErrorCode = HAL_USART_ERROR_NONE; | |
husart->State = HAL_USART_STATE_BUSY_RX; | |
/* Init tickstart for timeout managment*/ | |
tickstart = HAL_GetTick(); | |
husart->RxXferSize = Size; | |
husart->TxXferSize = Size; | |
husart->TxXferCount = Size; | |
husart->RxXferCount = Size; | |
/* Computation of USART mask to apply to RDR register */ | |
USART_MASK_COMPUTATION(husart); | |
uhMask = husart->Mask; | |
/* In case of 9bits/No Parity transfer, pRxData needs to be handled as a uint16_t pointer */ | |
if ((husart->Init.WordLength == USART_WORDLENGTH_9B) && (husart->Init.Parity == USART_PARITY_NONE)) | |
{ | |
prxdata8bits = NULL; | |
ptxdata8bits = NULL; | |
ptxdata16bits = (uint16_t *) pTxData; | |
prxdata16bits = (uint16_t *) pRxData; | |
} | |
else | |
{ | |
prxdata8bits = pRxData; | |
ptxdata8bits = pTxData; | |
ptxdata16bits = NULL; | |
prxdata16bits = NULL; | |
} | |
if ((husart->TxXferCount == 0x01U) || (husart->SlaveMode == USART_SLAVEMODE_ENABLE)) | |
{ | |
/* Wait until TXE flag is set to send data */ | |
if (USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TXE, RESET, tickstart, Timeout) != HAL_OK) | |
{ | |
return HAL_TIMEOUT; | |
} | |
if (ptxdata8bits == NULL) | |
{ | |
husart->Instance->TDR = (uint16_t)(*ptxdata16bits & uhMask); | |
ptxdata16bits++; | |
} | |
else | |
{ | |
husart->Instance->TDR = (uint8_t)(*ptxdata8bits & (uint8_t)(uhMask & 0xFFU)); | |
ptxdata8bits++; | |
} | |
husart->TxXferCount--; | |
} | |
/* Check the remain data to be sent */ | |
/* rxdatacount is a temporary variable for MISRAC2012-Rule-13.5 */ | |
rxdatacount = husart->RxXferCount; | |
while ((husart->TxXferCount > 0U) || (rxdatacount > 0U)) | |
{ | |
if (husart->TxXferCount > 0U) | |
{ | |
/* Wait until TXE flag is set to send data */ | |
if (USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TXE, RESET, tickstart, Timeout) != HAL_OK) | |
{ | |
return HAL_TIMEOUT; | |
} | |
if (ptxdata8bits == NULL) | |
{ | |
husart->Instance->TDR = (uint16_t)(*ptxdata16bits & uhMask); | |
ptxdata16bits++; | |
} | |
else | |
{ | |
husart->Instance->TDR = (uint8_t)(*ptxdata8bits & (uint8_t)(uhMask & 0xFFU)); | |
ptxdata8bits++; | |
} | |
husart->TxXferCount--; | |
} | |
if (husart->RxXferCount > 0U) | |
{ | |
/* Wait for RXNE Flag */ | |
if (USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_RXNE, RESET, tickstart, Timeout) != HAL_OK) | |
{ | |
return HAL_TIMEOUT; | |
} | |
if (prxdata8bits == NULL) | |
{ | |
*prxdata16bits = (uint16_t)(husart->Instance->RDR & uhMask); | |
prxdata16bits++; | |
} | |
else | |
{ | |
*prxdata8bits = (uint8_t)(husart->Instance->RDR & (uint8_t)(uhMask & 0xFFU)); | |
prxdata8bits++; | |
} | |
husart->RxXferCount--; | |
} | |
rxdatacount = husart->RxXferCount; | |
} | |
/* At end of TxRx process, restore husart->State to Ready */ | |
husart->State = HAL_USART_STATE_READY; | |
/* Process Unlocked */ | |
__HAL_UNLOCK(husart); | |
return HAL_OK; | |
} | |
else | |
{ | |
return HAL_BUSY; | |
} | |
} | |
/** | |
* @brief Send an amount of data in interrupt mode. | |
* @param husart USART handle. | |
* @param pTxData pointer to data buffer. | |
* @param Size amount of data to be sent. | |
* @retval HAL status | |
*/ | |
HAL_StatusTypeDef HAL_USART_Transmit_IT(USART_HandleTypeDef *husart, uint8_t *pTxData, uint16_t Size) | |
{ | |
if (husart->State == HAL_USART_STATE_READY) | |
{ | |
if ((pTxData == NULL) || (Size == 0U)) | |
{ | |
return HAL_ERROR; | |
} | |
/* Process Locked */ | |
__HAL_LOCK(husart); | |
husart->pTxBuffPtr = pTxData; | |
husart->TxXferSize = Size; | |
husart->TxXferCount = Size; | |
husart->TxISR = NULL; | |
husart->ErrorCode = HAL_USART_ERROR_NONE; | |
husart->State = HAL_USART_STATE_BUSY_TX; | |
/* The USART Error Interrupts: (Frame error, noise error, overrun error) | |
are not managed by the USART Transmit Process to avoid the overrun interrupt | |
when the usart mode is configured for transmit and receive "USART_MODE_TX_RX" | |
to benefit for the frame error and noise interrupts the usart mode should be | |
configured only for transmit "USART_MODE_TX" */ | |
/* Configure Tx interrupt processing */ | |
if (husart->FifoMode == USART_FIFOMODE_ENABLE) | |
{ | |
/* Set the Tx ISR function pointer according to the data word length */ | |
if ((husart->Init.WordLength == USART_WORDLENGTH_9B) && (husart->Init.Parity == USART_PARITY_NONE)) | |
{ | |
husart->TxISR = USART_TxISR_16BIT_FIFOEN; | |
} | |
else | |
{ | |
husart->TxISR = USART_TxISR_8BIT_FIFOEN; | |
} | |
/* Process Unlocked */ | |
__HAL_UNLOCK(husart); | |
/* Enable the TX FIFO threshold interrupt */ | |
__HAL_USART_ENABLE_IT(husart, USART_IT_TXFT); | |
} | |
else | |
{ | |
/* Set the Tx ISR function pointer according to the data word length */ | |
if ((husart->Init.WordLength == USART_WORDLENGTH_9B) && (husart->Init.Parity == USART_PARITY_NONE)) | |
{ | |
husart->TxISR = USART_TxISR_16BIT; | |
} | |
else | |
{ | |
husart->TxISR = USART_TxISR_8BIT; | |
} | |
/* Process Unlocked */ | |
__HAL_UNLOCK(husart); | |
/* Enable the USART Transmit Data Register Empty Interrupt */ | |
__HAL_USART_ENABLE_IT(husart, USART_IT_TXE); | |
} | |
return HAL_OK; | |
} | |
else | |
{ | |
return HAL_BUSY; | |
} | |
} | |
/** | |
* @brief Receive an amount of data in interrupt mode. | |
* @note To receive synchronous data, dummy data are simultaneously transmitted. | |
* @param husart USART handle. | |
* @param pRxData pointer to data buffer. | |
* @param Size amount of data to be received. | |
* @retval HAL status | |
*/ | |
HAL_StatusTypeDef HAL_USART_Receive_IT(USART_HandleTypeDef *husart, uint8_t *pRxData, uint16_t Size) | |
{ | |
uint16_t nb_dummy_data; | |
if (husart->State == HAL_USART_STATE_READY) | |
{ | |
if ((pRxData == NULL) || (Size == 0U)) | |
{ | |
return HAL_ERROR; | |
} | |
/* Process Locked */ | |
__HAL_LOCK(husart); | |
husart->pRxBuffPtr = pRxData; | |
husart->RxXferSize = Size; | |
husart->RxXferCount = Size; | |
husart->RxISR = NULL; | |
USART_MASK_COMPUTATION(husart); | |
husart->ErrorCode = HAL_USART_ERROR_NONE; | |
husart->State = HAL_USART_STATE_BUSY_RX; | |
/* Enable the USART Error Interrupt: (Frame error, noise error, overrun error) */ | |
SET_BIT(husart->Instance->CR3, USART_CR3_EIE); | |
/* Configure Rx interrupt processing */ | |
if ((husart->FifoMode == USART_FIFOMODE_ENABLE) && (Size >= husart->NbRxDataToProcess)) | |
{ | |
/* Set the Rx ISR function pointer according to the data word length */ | |
if ((husart->Init.WordLength == USART_WORDLENGTH_9B) && (husart->Init.Parity == USART_PARITY_NONE)) | |
{ | |
husart->RxISR = USART_RxISR_16BIT_FIFOEN; | |
} | |
else | |
{ | |
husart->RxISR = USART_RxISR_8BIT_FIFOEN; | |
} | |
/* Process Unlocked */ | |
__HAL_UNLOCK(husart); | |
/* Enable the USART Parity Error interrupt and RX FIFO Threshold interrupt */ | |
SET_BIT(husart->Instance->CR1, USART_CR1_PEIE); | |
SET_BIT(husart->Instance->CR3, USART_CR3_RXFTIE); | |
} | |
else | |
{ | |
/* Set the Rx ISR function pointer according to the data word length */ | |
if ((husart->Init.WordLength == USART_WORDLENGTH_9B) && (husart->Init.Parity == USART_PARITY_NONE)) | |
{ | |
husart->RxISR = USART_RxISR_16BIT; | |
} | |
else | |
{ | |
husart->RxISR = USART_RxISR_8BIT; | |
} | |
/* Process Unlocked */ | |
__HAL_UNLOCK(husart); | |
/* Enable the USART Parity Error and Data Register not empty Interrupts */ | |
SET_BIT(husart->Instance->CR1, USART_CR1_PEIE | USART_CR1_RXNEIE_RXFNEIE); | |
} | |
if (husart->SlaveMode == USART_SLAVEMODE_DISABLE) | |
{ | |
/* Send dummy data in order to generate the clock for the Slave to send the next data. | |
When FIFO mode is disabled only one data must be transferred. | |
When FIFO mode is enabled data must be transmitted until the RX FIFO reaches its threshold. | |
*/ | |
if ((husart->FifoMode == USART_FIFOMODE_ENABLE) && (Size >= husart->NbRxDataToProcess)) | |
{ | |
for (nb_dummy_data = husart->NbRxDataToProcess ; nb_dummy_data > 0U ; nb_dummy_data--) | |
{ | |
husart->Instance->TDR = (USART_DUMMY_DATA & (uint16_t)0x00FF); | |
} | |
} | |
else | |
{ | |
husart->Instance->TDR = (USART_DUMMY_DATA & (uint16_t)0x00FF); | |
} | |
} | |
return HAL_OK; | |
} | |
else | |
{ | |
return HAL_BUSY; | |
} | |
} | |
/** | |
* @brief Full-Duplex Send and Receive an amount of data in interrupt mode. | |
* @param husart USART handle. | |
* @param pTxData pointer to TX data buffer. | |
* @param pRxData pointer to RX data buffer. | |
* @param Size amount of data to be sent (same amount to be received). | |
* @retval HAL status | |
*/ | |
HAL_StatusTypeDef HAL_USART_TransmitReceive_IT(USART_HandleTypeDef *husart, uint8_t *pTxData, uint8_t *pRxData, uint16_t Size) | |
{ | |
if (husart->State == HAL_USART_STATE_READY) | |
{ | |
if ((pTxData == NULL) || (pRxData == NULL) || (Size == 0U)) | |
{ | |
return HAL_ERROR; | |
} | |
/* Process Locked */ | |
__HAL_LOCK(husart); | |
husart->pRxBuffPtr = pRxData; | |
husart->RxXferSize = Size; | |
husart->RxXferCount = Size; | |
husart->pTxBuffPtr = pTxData; | |
husart->TxXferSize = Size; | |
husart->TxXferCount = Size; | |
/* Computation of USART mask to apply to RDR register */ | |
USART_MASK_COMPUTATION(husart); | |
husart->ErrorCode = HAL_USART_ERROR_NONE; | |
husart->State = HAL_USART_STATE_BUSY_TX_RX; | |
/* Configure TxRx interrupt processing */ | |
if ((husart->FifoMode == USART_FIFOMODE_ENABLE) && (Size >= husart->NbRxDataToProcess)) | |
{ | |
/* Set the Rx ISR function pointer according to the data word length */ | |
if ((husart->Init.WordLength == USART_WORDLENGTH_9B) && (husart->Init.Parity == USART_PARITY_NONE)) | |
{ | |
husart->TxISR = USART_TxISR_16BIT_FIFOEN; | |
husart->RxISR = USART_RxISR_16BIT_FIFOEN; | |
} | |
else | |
{ | |
husart->TxISR = USART_TxISR_8BIT_FIFOEN; | |
husart->RxISR = USART_RxISR_8BIT_FIFOEN; | |
} | |
/* Process Locked */ | |
__HAL_UNLOCK(husart); | |
/* Enable the USART Error Interrupt: (Frame error, noise error, overrun error) */ | |
SET_BIT(husart->Instance->CR3, USART_CR3_EIE); | |
/* Enable the USART Parity Error interrupt */ | |
SET_BIT(husart->Instance->CR1, USART_CR1_PEIE); | |
/* Enable the TX and RX FIFO Threshold interrupts */ | |
SET_BIT(husart->Instance->CR3, (USART_CR3_TXFTIE | USART_CR3_RXFTIE)); | |
} | |
else | |
{ | |
if ((husart->Init.WordLength == USART_WORDLENGTH_9B) && (husart->Init.Parity == USART_PARITY_NONE)) | |
{ | |
husart->TxISR = USART_TxISR_16BIT; | |
husart->RxISR = USART_RxISR_16BIT; | |
} | |
else | |
{ | |
husart->TxISR = USART_TxISR_8BIT; | |
husart->RxISR = USART_RxISR_8BIT; | |
} | |
/* Process Locked */ | |
__HAL_UNLOCK(husart); | |
/* Enable the USART Error Interrupt: (Frame error, noise error, overrun error) */ | |
SET_BIT(husart->Instance->CR3, USART_CR3_EIE); | |
/* Enable the USART Parity Error and USART Data Register not empty Interrupts */ | |
SET_BIT(husart->Instance->CR1, USART_CR1_PEIE | USART_CR1_RXNEIE_RXFNEIE); | |
/* Enable the USART Transmit Data Register Empty Interrupt */ | |
SET_BIT(husart->Instance->CR1, USART_CR1_TXEIE_TXFNFIE); | |
} | |
return HAL_OK; | |
} | |
else | |
{ | |
return HAL_BUSY; | |
} | |
} | |
/** | |
* @brief Send an amount of data in DMA mode. | |
* @param husart USART handle. | |
* @param pTxData pointer to data buffer. | |
* @param Size amount of data to be sent. | |
* @retval HAL status | |
*/ | |
HAL_StatusTypeDef HAL_USART_Transmit_DMA(USART_HandleTypeDef *husart, uint8_t *pTxData, uint16_t Size) | |
{ | |
HAL_StatusTypeDef status = HAL_OK; | |
uint32_t *tmp; | |
if (husart->State == HAL_USART_STATE_READY) | |
{ | |
if ((pTxData == NULL) || (Size == 0U)) | |
{ | |
return HAL_ERROR; | |
} | |
/* Process Locked */ | |
__HAL_LOCK(husart); | |
husart->pTxBuffPtr = pTxData; | |
husart->TxXferSize = Size; | |
husart->TxXferCount = Size; | |
husart->ErrorCode = HAL_USART_ERROR_NONE; | |
husart->State = HAL_USART_STATE_BUSY_TX; | |
if (husart->hdmatx != NULL) | |
{ | |
/* Set the USART DMA transfer complete callback */ | |
husart->hdmatx->XferCpltCallback = USART_DMATransmitCplt; | |
/* Set the USART DMA Half transfer complete callback */ | |
husart->hdmatx->XferHalfCpltCallback = USART_DMATxHalfCplt; | |
/* Set the DMA error callback */ | |
husart->hdmatx->XferErrorCallback = USART_DMAError; | |
/* Enable the USART transmit DMA channel */ | |
tmp = (uint32_t *)&pTxData; | |
status = HAL_DMA_Start_IT(husart->hdmatx, *(uint32_t *)tmp, (uint32_t)&husart->Instance->TDR, Size); | |
} | |
if (status == HAL_OK) | |
{ | |
/* Clear the TC flag in the ICR register */ | |
__HAL_USART_CLEAR_FLAG(husart, USART_CLEAR_TCF); | |
/* Process Unlocked */ | |
__HAL_UNLOCK(husart); | |
/* Enable the DMA transfer for transmit request by setting the DMAT bit | |
in the USART CR3 register */ | |
SET_BIT(husart->Instance->CR3, USART_CR3_DMAT); | |
return HAL_OK; | |
} | |
else | |
{ | |
/* Set error code to DMA */ | |
husart->ErrorCode = HAL_USART_ERROR_DMA; | |
/* Process Unlocked */ | |
__HAL_UNLOCK(husart); | |
/* Restore husart->State to ready */ | |
husart->State = HAL_USART_STATE_READY; | |
return HAL_ERROR; | |
} | |
} | |
else | |
{ | |
return HAL_BUSY; | |
} | |
} | |
/** | |
* @brief Receive an amount of data in DMA mode. | |
* @note When the USART parity is enabled (PCE = 1), the received data contain | |
* the parity bit (MSB position). | |
* @note The USART DMA transmit channel must be configured in order to generate the clock for the slave. | |
* @param husart USART handle. | |
* @param pRxData pointer to data buffer. | |
* @param Size amount of data to be received. | |
* @retval HAL status | |
*/ | |
HAL_StatusTypeDef HAL_USART_Receive_DMA(USART_HandleTypeDef *husart, uint8_t *pRxData, uint16_t Size) | |
{ | |
HAL_StatusTypeDef status = HAL_OK; | |
uint32_t *tmp = (uint32_t *)&pRxData; | |
/* Check that a Rx process is not already ongoing */ | |
if (husart->State == HAL_USART_STATE_READY) | |
{ | |
if ((pRxData == NULL) || (Size == 0U)) | |
{ | |
return HAL_ERROR; | |
} | |
/* Process Locked */ | |
__HAL_LOCK(husart); | |
husart->pRxBuffPtr = pRxData; | |
husart->RxXferSize = Size; | |
husart->pTxBuffPtr = pRxData; | |
husart->TxXferSize = Size; | |
husart->ErrorCode = HAL_USART_ERROR_NONE; | |
husart->State = HAL_USART_STATE_BUSY_RX; | |
if (husart->hdmarx != NULL) | |
{ | |
/* Set the USART DMA Rx transfer complete callback */ | |
husart->hdmarx->XferCpltCallback = USART_DMAReceiveCplt; | |
/* Set the USART DMA Half transfer complete callback */ | |
husart->hdmarx->XferHalfCpltCallback = USART_DMARxHalfCplt; | |
/* Set the USART DMA Rx transfer error callback */ | |
husart->hdmarx->XferErrorCallback = USART_DMAError; | |
/* Enable the USART receive DMA channel */ | |
status = HAL_DMA_Start_IT(husart->hdmarx, (uint32_t)&husart->Instance->RDR, *(uint32_t *)tmp, Size); | |
} | |
if ((status == HAL_OK) && | |
(husart->SlaveMode == USART_SLAVEMODE_DISABLE)) | |
{ | |
/* Enable the USART transmit DMA channel: the transmit channel is used in order | |
to generate in the non-blocking mode the clock to the slave device, | |
this mode isn't a simplex receive mode but a full-duplex receive mode */ | |
/* Set the USART DMA Tx Complete and Error callback to Null */ | |
if (husart->hdmatx != NULL) | |
{ | |
husart->hdmatx->XferErrorCallback = NULL; | |
husart->hdmatx->XferHalfCpltCallback = NULL; | |
husart->hdmatx->XferCpltCallback = NULL; | |
status = HAL_DMA_Start_IT(husart->hdmatx, *(uint32_t *)tmp, (uint32_t)&husart->Instance->TDR, Size); | |
} | |
} | |
if (status == HAL_OK) | |
{ | |
/* Process Unlocked */ | |
__HAL_UNLOCK(husart); | |
/* Enable the USART Parity Error Interrupt */ | |
SET_BIT(husart->Instance->CR1, USART_CR1_PEIE); | |
/* Enable the USART Error Interrupt: (Frame error, noise error, overrun error) */ | |
SET_BIT(husart->Instance->CR3, USART_CR3_EIE); | |
/* Enable the DMA transfer for the receiver request by setting the DMAR bit | |
in the USART CR3 register */ | |
SET_BIT(husart->Instance->CR3, USART_CR3_DMAR); | |
/* Enable the DMA transfer for transmit request by setting the DMAT bit | |
in the USART CR3 register */ | |
SET_BIT(husart->Instance->CR3, USART_CR3_DMAT); | |
return HAL_OK; | |
} | |
else | |
{ | |
if (husart->hdmarx != NULL) | |
{ | |
status = HAL_DMA_Abort(husart->hdmarx); | |
} | |
/* No need to check on error code */ | |
UNUSED(status); | |
/* Set error code to DMA */ | |
husart->ErrorCode = HAL_USART_ERROR_DMA; | |
/* Process Unlocked */ | |
__HAL_UNLOCK(husart); | |
/* Restore husart->State to ready */ | |
husart->State = HAL_USART_STATE_READY; | |
return HAL_ERROR; | |
} | |
} | |
else | |
{ | |
return HAL_BUSY; | |
} | |
} | |
/** | |
* @brief Full-Duplex Transmit Receive an amount of data in non-blocking mode. | |
* @note When the USART parity is enabled (PCE = 1) the data received contain the parity bit. | |
* @param husart USART handle. | |
* @param pTxData pointer to TX data buffer. | |
* @param pRxData pointer to RX data buffer. | |
* @param Size amount of data to be received/sent. | |
* @retval HAL status | |
*/ | |
HAL_StatusTypeDef HAL_USART_TransmitReceive_DMA(USART_HandleTypeDef *husart, uint8_t *pTxData, uint8_t *pRxData, uint16_t Size) | |
{ | |
HAL_StatusTypeDef status; | |
uint32_t *tmp; | |
if (husart->State == HAL_USART_STATE_READY) | |
{ | |
if ((pTxData == NULL) || (pRxData == NULL) || (Size == 0U)) | |
{ | |
return HAL_ERROR; | |
} | |
/* Process Locked */ | |
__HAL_LOCK(husart); | |
husart->pRxBuffPtr = pRxData; | |
husart->RxXferSize = Size; | |
husart->pTxBuffPtr = pTxData; | |
husart->TxXferSize = Size; | |
husart->ErrorCode = HAL_USART_ERROR_NONE; | |
husart->State = HAL_USART_STATE_BUSY_TX_RX; | |
if ((husart->hdmarx != NULL) && (husart->hdmatx != NULL)) | |
{ | |
/* Set the USART DMA Rx transfer complete callback */ | |
husart->hdmarx->XferCpltCallback = USART_DMAReceiveCplt; | |
/* Set the USART DMA Half transfer complete callback */ | |
husart->hdmarx->XferHalfCpltCallback = USART_DMARxHalfCplt; | |
/* Set the USART DMA Tx transfer complete callback */ | |
husart->hdmatx->XferCpltCallback = USART_DMATransmitCplt; | |
/* Set the USART DMA Half transfer complete callback */ | |
husart->hdmatx->XferHalfCpltCallback = USART_DMATxHalfCplt; | |
/* Set the USART DMA Tx transfer error callback */ | |
husart->hdmatx->XferErrorCallback = USART_DMAError; | |
/* Set the USART DMA Rx transfer error callback */ | |
husart->hdmarx->XferErrorCallback = USART_DMAError; | |
/* Enable the USART receive DMA channel */ | |
tmp = (uint32_t *)&pRxData; | |
status = HAL_DMA_Start_IT(husart->hdmarx, (uint32_t)&husart->Instance->RDR, *(uint32_t *)tmp, Size); | |
/* Enable the USART transmit DMA channel */ | |
if (status == HAL_OK) | |
{ | |
tmp = (uint32_t *)&pTxData; | |
status = HAL_DMA_Start_IT(husart->hdmatx, *(uint32_t *)tmp, (uint32_t)&husart->Instance->TDR, Size); | |
} | |
} | |
else | |
{ | |
status = HAL_ERROR; | |
} | |
if (status == HAL_OK) | |
{ | |
/* Process Unlocked */ | |
__HAL_UNLOCK(husart); | |
/* Enable the USART Parity Error Interrupt */ | |
SET_BIT(husart->Instance->CR1, USART_CR1_PEIE); | |
/* Enable the USART Error Interrupt: (Frame error, noise error, overrun error) */ | |
SET_BIT(husart->Instance->CR3, USART_CR3_EIE); | |
/* Clear the TC flag in the ICR register */ | |
__HAL_USART_CLEAR_FLAG(husart, USART_CLEAR_TCF); | |
/* Enable the DMA transfer for the receiver request by setting the DMAR bit | |
in the USART CR3 register */ | |
SET_BIT(husart->Instance->CR3, USART_CR3_DMAR); | |
/* Enable the DMA transfer for transmit request by setting the DMAT bit | |
in the USART CR3 register */ | |
SET_BIT(husart->Instance->CR3, USART_CR3_DMAT); | |
return HAL_OK; | |
} | |
else | |
{ | |
if (husart->hdmarx != NULL) | |
{ | |
status = HAL_DMA_Abort(husart->hdmarx); | |
} | |
/* No need to check on error code */ | |
UNUSED(status); | |
/* Set error code to DMA */ | |
husart->ErrorCode = HAL_USART_ERROR_DMA; | |
/* Process Unlocked */ | |
__HAL_UNLOCK(husart); | |
/* Restore husart->State to ready */ | |
husart->State = HAL_USART_STATE_READY; | |
return HAL_ERROR; | |
} | |
} | |
else | |
{ | |
return HAL_BUSY; | |
} | |
} | |
/** | |
* @brief Pause the DMA Transfer. | |
* @param husart USART handle. | |
* @retval HAL status | |
*/ | |
HAL_StatusTypeDef HAL_USART_DMAPause(USART_HandleTypeDef *husart) | |
{ | |
const HAL_USART_StateTypeDef state = husart->State; | |
/* Process Locked */ | |
__HAL_LOCK(husart); | |
if ((HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAT)) && | |
(state == HAL_USART_STATE_BUSY_TX)) | |
{ | |
/* Disable the USART DMA Tx request */ | |
CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAT); | |
} | |
else if ((state == HAL_USART_STATE_BUSY_RX) || | |
(state == HAL_USART_STATE_BUSY_TX_RX)) | |
{ | |
if (HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAT)) | |
{ | |
/* Disable the USART DMA Tx request */ | |
CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAT); | |
} | |
if (HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAR)) | |
{ | |
/* Disable PE and ERR (Frame error, noise error, overrun error) interrupts */ | |
CLEAR_BIT(husart->Instance->CR1, USART_CR1_PEIE); | |
CLEAR_BIT(husart->Instance->CR3, USART_CR3_EIE); | |
/* Disable the USART DMA Rx request */ | |
CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAR); | |
} | |
} | |
else | |
{ | |
/* Nothing to do */ | |
} | |
/* Process Unlocked */ | |
__HAL_UNLOCK(husart); | |
return HAL_OK; | |
} | |
/** | |
* @brief Resume the DMA Transfer. | |
* @param husart USART handle. | |
* @retval HAL status | |
*/ | |
HAL_StatusTypeDef HAL_USART_DMAResume(USART_HandleTypeDef *husart) | |
{ | |
const HAL_USART_StateTypeDef state = husart->State; | |
/* Process Locked */ | |
__HAL_LOCK(husart); | |
if (state == HAL_USART_STATE_BUSY_TX) | |
{ | |
/* Enable the USART DMA Tx request */ | |
SET_BIT(husart->Instance->CR3, USART_CR3_DMAT); | |
} | |
else if ((state == HAL_USART_STATE_BUSY_RX) || | |
(state == HAL_USART_STATE_BUSY_TX_RX)) | |
{ | |
/* Clear the Overrun flag before resuming the Rx transfer*/ | |
__HAL_USART_CLEAR_FLAG(husart, USART_CLEAR_OREF); | |
/* Reenable PE and ERR (Frame error, noise error, overrun error) interrupts */ | |
SET_BIT(husart->Instance->CR1, USART_CR1_PEIE); | |
SET_BIT(husart->Instance->CR3, USART_CR3_EIE); | |
/* Enable the USART DMA Rx request before the DMA Tx request */ | |
SET_BIT(husart->Instance->CR3, USART_CR3_DMAR); | |
/* Enable the USART DMA Tx request */ | |
SET_BIT(husart->Instance->CR3, USART_CR3_DMAT); | |
} | |
else | |
{ | |
/* Nothing to do */ | |
} | |
/* Process Unlocked */ | |
__HAL_UNLOCK(husart); | |
return HAL_OK; | |
} | |
/** | |
* @brief Stop the DMA Transfer. | |
* @param husart USART handle. | |
* @retval HAL status | |
*/ | |
HAL_StatusTypeDef HAL_USART_DMAStop(USART_HandleTypeDef *husart) | |
{ | |
/* The Lock is not implemented on this API to allow the user application | |
to call the HAL USART API under callbacks HAL_USART_TxCpltCallback() / HAL_USART_RxCpltCallback() / | |
HAL_USART_TxHalfCpltCallback / HAL_USART_RxHalfCpltCallback: | |
indeed, when HAL_DMA_Abort() API is called, the DMA TX/RX Transfer or Half Transfer complete | |
interrupt is generated if the DMA transfer interruption occurs at the middle or at the end of | |
the stream and the corresponding call back is executed. */ | |
/* Disable the USART Tx/Rx DMA requests */ | |
CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAT); | |
CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAR); | |
/* Abort the USART DMA tx channel */ | |
if (husart->hdmatx != NULL) | |
{ | |
if (HAL_DMA_Abort(husart->hdmatx) != HAL_OK) | |
{ | |
if (HAL_DMA_GetError(husart->hdmatx) == HAL_DMA_ERROR_TIMEOUT) | |
{ | |
/* Set error code to DMA */ | |
husart->ErrorCode = HAL_USART_ERROR_DMA; | |
return HAL_TIMEOUT; | |
} | |
} | |
} | |
/* Abort the USART DMA rx channel */ | |
if (husart->hdmarx != NULL) | |
{ | |
if (HAL_DMA_Abort(husart->hdmarx) != HAL_OK) | |
{ | |
if (HAL_DMA_GetError(husart->hdmarx) == HAL_DMA_ERROR_TIMEOUT) | |
{ | |
/* Set error code to DMA */ | |
husart->ErrorCode = HAL_USART_ERROR_DMA; | |
return HAL_TIMEOUT; | |
} | |
} | |
} | |
USART_EndTransfer(husart); | |
husart->State = HAL_USART_STATE_READY; | |
return HAL_OK; | |
} | |
/** | |
* @brief Abort ongoing transfers (blocking mode). | |
* @param husart USART handle. | |
* @note This procedure could be used for aborting any ongoing transfer started in Interrupt or DMA mode. | |
* This procedure performs following operations : | |
* - Disable USART Interrupts (Tx and Rx) | |
* - Disable the DMA transfer in the peripheral register (if enabled) | |
* - Abort DMA transfer by calling HAL_DMA_Abort (in case of transfer in DMA mode) | |
* - Set handle State to READY | |
* @note This procedure is executed in blocking mode : when exiting function, Abort is considered as completed. | |
* @retval HAL status | |
*/ | |
HAL_StatusTypeDef HAL_USART_Abort(USART_HandleTypeDef *husart) | |
{ | |
/* Disable TXEIE, TCIE, RXNE, RXFT, TXFT, PE and ERR (Frame error, noise error, overrun error) interrupts */ | |
CLEAR_BIT(husart->Instance->CR1, (USART_CR1_RXNEIE_RXFNEIE | USART_CR1_PEIE | USART_CR1_TXEIE_TXFNFIE | USART_CR1_TCIE)); | |
CLEAR_BIT(husart->Instance->CR3, (USART_CR3_EIE | USART_CR3_RXFTIE | USART_CR3_TXFTIE)); | |
/* Disable the USART DMA Tx request if enabled */ | |
if (HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAT)) | |
{ | |
CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAT); | |
/* Abort the USART DMA Tx channel : use blocking DMA Abort API (no callback) */ | |
if (husart->hdmatx != NULL) | |
{ | |
/* Set the USART DMA Abort callback to Null. | |
No call back execution at end of DMA abort procedure */ | |
husart->hdmatx->XferAbortCallback = NULL; | |
if (HAL_DMA_Abort(husart->hdmatx) != HAL_OK) | |
{ | |
if (HAL_DMA_GetError(husart->hdmatx) == HAL_DMA_ERROR_TIMEOUT) | |
{ | |
/* Set error code to DMA */ | |
husart->ErrorCode = HAL_USART_ERROR_DMA; | |
return HAL_TIMEOUT; | |
} | |
} | |
} | |
} | |
/* Disable the USART DMA Rx request if enabled */ | |
if (HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAR)) | |
{ | |
CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAR); | |
/* Abort the USART DMA Rx channel : use blocking DMA Abort API (no callback) */ | |
if (husart->hdmarx != NULL) | |
{ | |
/* Set the USART DMA Abort callback to Null. | |
No call back execution at end of DMA abort procedure */ | |
husart->hdmarx->XferAbortCallback = NULL; | |
if (HAL_DMA_Abort(husart->hdmarx) != HAL_OK) | |
{ | |
if (HAL_DMA_GetError(husart->hdmarx) == HAL_DMA_ERROR_TIMEOUT) | |
{ | |
/* Set error code to DMA */ | |
husart->ErrorCode = HAL_USART_ERROR_DMA; | |
return HAL_TIMEOUT; | |
} | |
} | |
} | |
} | |
/* Reset Tx and Rx transfer counters */ | |
husart->TxXferCount = 0U; | |
husart->RxXferCount = 0U; | |
/* Clear the Error flags in the ICR register */ | |
__HAL_USART_CLEAR_FLAG(husart, USART_CLEAR_OREF | USART_CLEAR_NEF | USART_CLEAR_PEF | USART_CLEAR_FEF); | |
/* Flush the whole TX FIFO (if needed) */ | |
if (husart->FifoMode == USART_FIFOMODE_ENABLE) | |
{ | |
__HAL_USART_SEND_REQ(husart, USART_TXDATA_FLUSH_REQUEST); | |
} | |
/* Discard the received data */ | |
__HAL_USART_SEND_REQ(husart, USART_RXDATA_FLUSH_REQUEST); | |
/* Restore husart->State to Ready */ | |
husart->State = HAL_USART_STATE_READY; | |
/* Reset Handle ErrorCode to No Error */ | |
husart->ErrorCode = HAL_USART_ERROR_NONE; | |
return HAL_OK; | |
} | |
/** | |
* @brief Abort ongoing transfers (Interrupt mode). | |
* @param husart USART handle. | |
* @note This procedure could be used for aborting any ongoing transfer started in Interrupt or DMA mode. | |
* This procedure performs following operations : | |
* - Disable USART Interrupts (Tx and Rx) | |
* - Disable the DMA transfer in the peripheral register (if enabled) | |
* - Abort DMA transfer by calling HAL_DMA_Abort_IT (in case of transfer in DMA mode) | |
* - Set handle State to READY | |
* - At abort completion, call user abort complete callback | |
* @note This procedure is executed in Interrupt mode, meaning that abort procedure could be | |
* considered as completed only when user abort complete callback is executed (not when exiting function). | |
* @retval HAL status | |
*/ | |
HAL_StatusTypeDef HAL_USART_Abort_IT(USART_HandleTypeDef *husart) | |
{ | |
uint32_t abortcplt = 1U; | |
/* Disable TXEIE, TCIE, RXNE, RXFT, TXFT, PE and ERR (Frame error, noise error, overrun error) interrupts */ | |
CLEAR_BIT(husart->Instance->CR1, (USART_CR1_RXNEIE_RXFNEIE | USART_CR1_PEIE | USART_CR1_TXEIE_TXFNFIE | USART_CR1_TCIE)); | |
CLEAR_BIT(husart->Instance->CR3, (USART_CR3_EIE | USART_CR3_RXFTIE | USART_CR3_TXFTIE)); | |
/* If DMA Tx and/or DMA Rx Handles are associated to USART Handle, DMA Abort complete callbacks should be initialised | |
before any call to DMA Abort functions */ | |
/* DMA Tx Handle is valid */ | |
if (husart->hdmatx != NULL) | |
{ | |
/* Set DMA Abort Complete callback if USART DMA Tx request if enabled. | |
Otherwise, set it to NULL */ | |
if (HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAT)) | |
{ | |
husart->hdmatx->XferAbortCallback = USART_DMATxAbortCallback; | |
} | |
else | |
{ | |
husart->hdmatx->XferAbortCallback = NULL; | |
} | |
} | |
/* DMA Rx Handle is valid */ | |
if (husart->hdmarx != NULL) | |
{ | |
/* Set DMA Abort Complete callback if USART DMA Rx request if enabled. | |
Otherwise, set it to NULL */ | |
if (HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAR)) | |
{ | |
husart->hdmarx->XferAbortCallback = USART_DMARxAbortCallback; | |
} | |
else | |
{ | |
husart->hdmarx->XferAbortCallback = NULL; | |
} | |
} | |
/* Disable the USART DMA Tx request if enabled */ | |
if (HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAT)) | |
{ | |
/* Disable DMA Tx at USART level */ | |
CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAT); | |
/* Abort the USART DMA Tx channel : use non blocking DMA Abort API (callback) */ | |
if (husart->hdmatx != NULL) | |
{ | |
/* USART Tx DMA Abort callback has already been initialised : | |
will lead to call HAL_USART_AbortCpltCallback() at end of DMA abort procedure */ | |
/* Abort DMA TX */ | |
if (HAL_DMA_Abort_IT(husart->hdmatx) != HAL_OK) | |
{ | |
husart->hdmatx->XferAbortCallback = NULL; | |
} | |
else | |
{ | |
abortcplt = 0U; | |
} | |
} | |
} | |
/* Disable the USART DMA Rx request if enabled */ | |
if (HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAR)) | |
{ | |
CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAR); | |
/* Abort the USART DMA Rx channel : use non blocking DMA Abort API (callback) */ | |
if (husart->hdmarx != NULL) | |
{ | |
/* USART Rx DMA Abort callback has already been initialised : | |
will lead to call HAL_USART_AbortCpltCallback() at end of DMA abort procedure */ | |
/* Abort DMA RX */ | |
if (HAL_DMA_Abort_IT(husart->hdmarx) != HAL_OK) | |
{ | |
husart->hdmarx->XferAbortCallback = NULL; | |
abortcplt = 1U; | |
} | |
else | |
{ | |
abortcplt = 0U; | |
} | |
} | |
} | |
/* if no DMA abort complete callback execution is required => call user Abort Complete callback */ | |
if (abortcplt == 1U) | |
{ | |
/* Reset Tx and Rx transfer counters */ | |
husart->TxXferCount = 0U; | |
husart->RxXferCount = 0U; | |
/* Reset errorCode */ | |
husart->ErrorCode = HAL_USART_ERROR_NONE; | |
/* Clear the Error flags in the ICR register */ | |
__HAL_USART_CLEAR_FLAG(husart, USART_CLEAR_OREF | USART_CLEAR_NEF | USART_CLEAR_PEF | USART_CLEAR_FEF); | |
/* Flush the whole TX FIFO (if needed) */ | |
if (husart->FifoMode == USART_FIFOMODE_ENABLE) | |
{ | |
__HAL_USART_SEND_REQ(husart, USART_TXDATA_FLUSH_REQUEST); | |
} | |
/* Discard the received data */ | |
__HAL_USART_SEND_REQ(husart, USART_RXDATA_FLUSH_REQUEST); | |
/* Restore husart->State to Ready */ | |
husart->State = HAL_USART_STATE_READY; | |
/* As no DMA to be aborted, call directly user Abort complete callback */ | |
#if (USE_HAL_USART_REGISTER_CALLBACKS == 1) | |
/* Call registered Abort Complete Callback */ | |
husart->AbortCpltCallback(husart); | |
#else | |
/* Call legacy weak Abort Complete Callback */ | |
HAL_USART_AbortCpltCallback(husart); | |
#endif /* USE_HAL_USART_REGISTER_CALLBACKS */ | |
} | |
return HAL_OK; | |
} | |
/** | |
* @brief Handle USART interrupt request. | |
* @param husart USART handle. | |
* @retval None | |
*/ | |
void HAL_USART_IRQHandler(USART_HandleTypeDef *husart) | |
{ | |
uint32_t isrflags = READ_REG(husart->Instance->ISR); | |
uint32_t cr1its = READ_REG(husart->Instance->CR1); | |
uint32_t cr3its = READ_REG(husart->Instance->CR3); | |
uint32_t errorflags; | |
uint32_t errorcode; | |
/* If no error occurs */ | |
errorflags = (isrflags & (uint32_t)(USART_ISR_PE | USART_ISR_FE | USART_ISR_ORE | USART_ISR_NE | USART_ISR_UDR)); | |
if (errorflags == 0U) | |
{ | |
/* USART in mode Receiver ---------------------------------------------------*/ | |
if (((isrflags & USART_ISR_RXNE_RXFNE) != 0U) | |
&& (((cr1its & USART_CR1_RXNEIE_RXFNEIE) != 0U) | |
|| ((cr3its & USART_CR3_RXFTIE) != 0U))) | |
{ | |
if (husart->RxISR != NULL) | |
{ | |
husart->RxISR(husart); | |
} | |
return; | |
} | |
} | |
/* If some errors occur */ | |
if ((errorflags != 0U) | |
&& (((cr3its & (USART_CR3_RXFTIE | USART_CR3_EIE)) != 0U) | |
|| ((cr1its & (USART_CR1_RXNEIE_RXFNEIE | USART_CR1_PEIE)) != 0U))) | |
{ | |
/* USART parity error interrupt occurred -------------------------------------*/ | |
if (((isrflags & USART_ISR_PE) != 0U) && ((cr1its & USART_CR1_PEIE) != 0U)) | |
{ | |
__HAL_USART_CLEAR_IT(husart, USART_CLEAR_PEF); | |
husart->ErrorCode |= HAL_USART_ERROR_PE; | |
} | |
/* USART frame error interrupt occurred --------------------------------------*/ | |
if (((isrflags & USART_ISR_FE) != 0U) && ((cr3its & USART_CR3_EIE) != 0U)) | |
{ | |
__HAL_USART_CLEAR_IT(husart, USART_CLEAR_FEF); | |
husart->ErrorCode |= HAL_USART_ERROR_FE; | |
} | |
/* USART noise error interrupt occurred --------------------------------------*/ | |
if (((isrflags & USART_ISR_NE) != 0U) && ((cr3its & USART_CR3_EIE) != 0U)) | |
{ | |
__HAL_USART_CLEAR_IT(husart, USART_CLEAR_NEF); | |
husart->ErrorCode |= HAL_USART_ERROR_NE; | |
} | |
/* USART Over-Run interrupt occurred -----------------------------------------*/ | |
if (((isrflags & USART_ISR_ORE) != 0U) | |
&& (((cr1its & USART_CR1_RXNEIE_RXFNEIE) != 0U) || | |
((cr3its & (USART_CR3_RXFTIE | USART_CR3_EIE)) != 0U))) | |
{ | |
__HAL_USART_CLEAR_IT(husart, USART_CLEAR_OREF); | |
husart->ErrorCode |= HAL_USART_ERROR_ORE; | |
} | |
/* USART SPI slave underrun error interrupt occurred -------------------------*/ | |
if (((isrflags & USART_ISR_UDR) != 0U) && ((cr3its & USART_CR3_EIE) != 0U)) | |
{ | |
/* Ignore SPI slave underrun errors when reception is going on */ | |
if (husart->State == HAL_USART_STATE_BUSY_RX) | |
{ | |
__HAL_USART_CLEAR_UDRFLAG(husart); | |
return; | |
} | |
else | |
{ | |
__HAL_USART_CLEAR_UDRFLAG(husart); | |
husart->ErrorCode |= HAL_USART_ERROR_UDR; | |
} | |
} | |
/* Call USART Error Call back function if need be --------------------------*/ | |
if (husart->ErrorCode != HAL_USART_ERROR_NONE) | |
{ | |
/* USART in mode Receiver ---------------------------------------------------*/ | |
if (((isrflags & USART_ISR_RXNE_RXFNE) != 0U) | |
&& (((cr1its & USART_CR1_RXNEIE_RXFNEIE) != 0U) | |
|| ((cr3its & USART_CR3_RXFTIE) != 0U))) | |
{ | |
if (husart->RxISR != NULL) | |
{ | |
husart->RxISR(husart); | |
} | |
} | |
/* If Overrun error occurs, or if any error occurs in DMA mode reception, | |
consider error as blocking */ | |
errorcode = husart->ErrorCode & HAL_USART_ERROR_ORE; | |
if ((HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAR)) || | |
(errorcode != 0U)) | |
{ | |
/* Blocking error : transfer is aborted | |
Set the USART state ready to be able to start again the process, | |
Disable Interrupts, and disable DMA requests, if ongoing */ | |
USART_EndTransfer(husart); | |
/* Disable the USART DMA Rx request if enabled */ | |
if (HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAR)) | |
{ | |
CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAR | USART_CR3_DMAR); | |
/* Abort the USART DMA Tx channel */ | |
if (husart->hdmatx != NULL) | |
{ | |
/* Set the USART Tx DMA Abort callback to NULL : no callback | |
executed at end of DMA abort procedure */ | |
husart->hdmatx->XferAbortCallback = NULL; | |
/* Abort DMA TX */ | |
(void)HAL_DMA_Abort_IT(husart->hdmatx); | |
} | |
/* Abort the USART DMA Rx channel */ | |
if (husart->hdmarx != NULL) | |
{ | |
/* Set the USART Rx DMA Abort callback : | |
will lead to call HAL_USART_ErrorCallback() at end of DMA abort procedure */ | |
husart->hdmarx->XferAbortCallback = USART_DMAAbortOnError; | |
/* Abort DMA RX */ | |
if (HAL_DMA_Abort_IT(husart->hdmarx) != HAL_OK) | |
{ | |
/* Call Directly husart->hdmarx->XferAbortCallback function in case of error */ | |
husart->hdmarx->XferAbortCallback(husart->hdmarx); | |
} | |
} | |
else | |
{ | |
/* Call user error callback */ | |
#if (USE_HAL_USART_REGISTER_CALLBACKS == 1) | |
/* Call registered Error Callback */ | |
husart->ErrorCallback(husart); | |
#else | |
/* Call legacy weak Error Callback */ | |
HAL_USART_ErrorCallback(husart); | |
#endif /* USE_HAL_USART_REGISTER_CALLBACKS */ | |
} | |
} | |
else | |
{ | |
/* Call user error callback */ | |
#if (USE_HAL_USART_REGISTER_CALLBACKS == 1) | |
/* Call registered Error Callback */ | |
husart->ErrorCallback(husart); | |
#else | |
/* Call legacy weak Error Callback */ | |
HAL_USART_ErrorCallback(husart); | |
#endif /* USE_HAL_USART_REGISTER_CALLBACKS */ | |
} | |
} | |
else | |
{ | |
/* Non Blocking error : transfer could go on. | |
Error is notified to user through user error callback */ | |
#if (USE_HAL_USART_REGISTER_CALLBACKS == 1) | |
/* Call registered Error Callback */ | |
husart->ErrorCallback(husart); | |
#else | |
/* Call legacy weak Error Callback */ | |
HAL_USART_ErrorCallback(husart); | |
#endif /* USE_HAL_USART_REGISTER_CALLBACKS */ | |
husart->ErrorCode = HAL_USART_ERROR_NONE; | |
} | |
} | |
return; | |
} /* End if some error occurs */ | |
/* USART in mode Transmitter ------------------------------------------------*/ | |
if (((isrflags & USART_ISR_TXE_TXFNF) != 0U) | |
&& (((cr1its & USART_CR1_TXEIE_TXFNFIE) != 0U) | |
|| ((cr3its & USART_CR3_TXFTIE) != 0U))) | |
{ | |
if (husart->TxISR != NULL) | |
{ | |
husart->TxISR(husart); | |
} | |
return; | |
} | |
/* USART in mode Transmitter (transmission end) -----------------------------*/ | |
if (((isrflags & USART_ISR_TC) != 0U) && ((cr1its & USART_CR1_TCIE) != 0U)) | |
{ | |
USART_EndTransmit_IT(husart); | |
return; | |
} | |
/* USART TX Fifo Empty occurred ----------------------------------------------*/ | |
if (((isrflags & USART_ISR_TXFE) != 0U) && ((cr1its & USART_CR1_TXFEIE) != 0U)) | |
{ | |
#if (USE_HAL_USART_REGISTER_CALLBACKS == 1) | |
/* Call registered Tx Fifo Empty Callback */ | |
husart->TxFifoEmptyCallback(husart); | |
#else | |
/* Call legacy weak Tx Fifo Empty Callback */ | |
HAL_USARTEx_TxFifoEmptyCallback(husart); | |
#endif /* USE_HAL_USART_REGISTER_CALLBACKS */ | |
return; | |
} | |
/* USART RX Fifo Full occurred ----------------------------------------------*/ | |
if (((isrflags & USART_ISR_RXFF) != 0U) && ((cr1its & USART_CR1_RXFFIE) != 0U)) | |
{ | |
#if (USE_HAL_USART_REGISTER_CALLBACKS == 1) | |
/* Call registered Rx Fifo Full Callback */ | |
husart->RxFifoFullCallback(husart); | |
#else | |
/* Call legacy weak Rx Fifo Full Callback */ | |
HAL_USARTEx_RxFifoFullCallback(husart); | |
#endif /* USE_HAL_USART_REGISTER_CALLBACKS */ | |
return; | |
} | |
} | |
/** | |
* @brief Tx Transfer completed callback. | |
* @param husart USART handle. | |
* @retval None | |
*/ | |
__weak void HAL_USART_TxCpltCallback(USART_HandleTypeDef *husart) | |
{ | |
/* Prevent unused argument(s) compilation warning */ | |
UNUSED(husart); | |
/* NOTE : This function should not be modified, when the callback is needed, | |
the HAL_USART_TxCpltCallback can be implemented in the user file. | |
*/ | |
} | |
/** | |
* @brief Tx Half Transfer completed callback. | |
* @param husart USART handle. | |
* @retval None | |
*/ | |
__weak void HAL_USART_TxHalfCpltCallback(USART_HandleTypeDef *husart) | |
{ | |
/* Prevent unused argument(s) compilation warning */ | |
UNUSED(husart); | |
/* NOTE: This function should not be modified, when the callback is needed, | |
the HAL_USART_TxHalfCpltCallback can be implemented in the user file. | |
*/ | |
} | |
/** | |
* @brief Rx Transfer completed callback. | |
* @param husart USART handle. | |
* @retval None | |
*/ | |
__weak void HAL_USART_RxCpltCallback(USART_HandleTypeDef *husart) | |
{ | |
/* Prevent unused argument(s) compilation warning */ | |
UNUSED(husart); | |
/* NOTE: This function should not be modified, when the callback is needed, | |
the HAL_USART_RxCpltCallback can be implemented in the user file. | |
*/ | |
} | |
/** | |
* @brief Rx Half Transfer completed callback. | |
* @param husart USART handle. | |
* @retval None | |
*/ | |
__weak void HAL_USART_RxHalfCpltCallback(USART_HandleTypeDef *husart) | |
{ | |
/* Prevent unused argument(s) compilation warning */ | |
UNUSED(husart); | |
/* NOTE : This function should not be modified, when the callback is needed, | |
the HAL_USART_RxHalfCpltCallback can be implemented in the user file | |
*/ | |
} | |
/** | |
* @brief Tx/Rx Transfers completed callback for the non-blocking process. | |
* @param husart USART handle. | |
* @retval None | |
*/ | |
__weak void HAL_USART_TxRxCpltCallback(USART_HandleTypeDef *husart) | |
{ | |
/* Prevent unused argument(s) compilation warning */ | |
UNUSED(husart); | |
/* NOTE : This function should not be modified, when the callback is needed, | |
the HAL_USART_TxRxCpltCallback can be implemented in the user file | |
*/ | |
} | |
/** | |
* @brief USART error callback. | |
* @param husart USART handle. | |
* @retval None | |
*/ | |
__weak void HAL_USART_ErrorCallback(USART_HandleTypeDef *husart) | |
{ | |
/* Prevent unused argument(s) compilation warning */ | |
UNUSED(husart); | |
/* NOTE : This function should not be modified, when the callback is needed, | |
the HAL_USART_ErrorCallback can be implemented in the user file. | |
*/ | |
} | |
/** | |
* @brief USART Abort Complete callback. | |
* @param husart USART handle. | |
* @retval None | |
*/ | |
__weak void HAL_USART_AbortCpltCallback(USART_HandleTypeDef *husart) | |
{ | |
/* Prevent unused argument(s) compilation warning */ | |
UNUSED(husart); | |
/* NOTE : This function should not be modified, when the callback is needed, | |
the HAL_USART_AbortCpltCallback can be implemented in the user file. | |
*/ | |
} | |
/** | |
* @} | |
*/ | |
/** @defgroup USART_Exported_Functions_Group4 Peripheral State and Error functions | |
* @brief USART Peripheral State and Error functions | |
* | |
@verbatim | |
============================================================================== | |
##### Peripheral State and Error functions ##### | |
============================================================================== | |
[..] | |
This subsection provides functions allowing to : | |
(+) Return the USART handle state | |
(+) Return the USART handle error code | |
@endverbatim | |
* @{ | |
*/ | |
/** | |
* @brief Return the USART handle state. | |
* @param husart pointer to a USART_HandleTypeDef structure that contains | |
* the configuration information for the specified USART. | |
* @retval USART handle state | |
*/ | |
HAL_USART_StateTypeDef HAL_USART_GetState(USART_HandleTypeDef *husart) | |
{ | |
return husart->State; | |
} | |
/** | |
* @brief Return the USART error code. | |
* @param husart pointer to a USART_HandleTypeDef structure that contains | |
* the configuration information for the specified USART. | |
* @retval USART handle Error Code | |
*/ | |
uint32_t HAL_USART_GetError(USART_HandleTypeDef *husart) | |
{ | |
return husart->ErrorCode; | |
} | |
/** | |
* @} | |
*/ | |
/** | |
* @} | |
*/ | |
/** @defgroup USART_Private_Functions USART Private Functions | |
* @{ | |
*/ | |
/** | |
* @brief Initialize the callbacks to their default values. | |
* @param husart USART handle. | |
* @retval none | |
*/ | |
#if (USE_HAL_USART_REGISTER_CALLBACKS == 1) | |
void USART_InitCallbacksToDefault(USART_HandleTypeDef *husart) | |
{ | |
/* Init the USART Callback settings */ | |
husart->TxHalfCpltCallback = HAL_USART_TxHalfCpltCallback; /* Legacy weak TxHalfCpltCallback */ | |
husart->TxCpltCallback = HAL_USART_TxCpltCallback; /* Legacy weak TxCpltCallback */ | |
husart->RxHalfCpltCallback = HAL_USART_RxHalfCpltCallback; /* Legacy weak RxHalfCpltCallback */ | |
husart->RxCpltCallback = HAL_USART_RxCpltCallback; /* Legacy weak RxCpltCallback */ | |
husart->TxRxCpltCallback = HAL_USART_TxRxCpltCallback; /* Legacy weak TxRxCpltCallback */ | |
husart->ErrorCallback = HAL_USART_ErrorCallback; /* Legacy weak ErrorCallback */ | |
husart->AbortCpltCallback = HAL_USART_AbortCpltCallback; /* Legacy weak AbortCpltCallback */ | |
husart->RxFifoFullCallback = HAL_USARTEx_RxFifoFullCallback; /* Legacy weak RxFifoFullCallback */ | |
husart->TxFifoEmptyCallback = HAL_USARTEx_TxFifoEmptyCallback; /* Legacy weak TxFifoEmptyCallback */ | |
} | |
#endif /* USE_HAL_USART_REGISTER_CALLBACKS */ | |
/** | |
* @brief End ongoing transfer on USART peripheral (following error detection or Transfer completion). | |
* @param husart USART handle. | |
* @retval None | |
*/ | |
static void USART_EndTransfer(USART_HandleTypeDef *husart) | |
{ | |
/* Disable TXEIE, TCIE, RXNE, RXFT, TXFT, PE and ERR (Frame error, noise error, overrun error) interrupts */ | |
CLEAR_BIT(husart->Instance->CR1, (USART_CR1_RXNEIE_RXFNEIE | USART_CR1_PEIE | USART_CR1_TXEIE_TXFNFIE | USART_CR1_TCIE)); | |
CLEAR_BIT(husart->Instance->CR3, (USART_CR3_EIE | USART_CR3_RXFTIE | USART_CR3_TXFTIE)); | |
/* At end of process, restore husart->State to Ready */ | |
husart->State = HAL_USART_STATE_READY; | |
} | |
/** | |
* @brief DMA USART transmit process complete callback. | |
* @param hdma DMA handle. | |
* @retval None | |
*/ | |
static void USART_DMATransmitCplt(DMA_HandleTypeDef *hdma) | |
{ | |
USART_HandleTypeDef *husart = (USART_HandleTypeDef *)(hdma->Parent); | |
/* DMA Normal mode */ | |
if (hdma->Init.Mode != DMA_CIRCULAR) | |
{ | |
husart->TxXferCount = 0U; | |
if (husart->State == HAL_USART_STATE_BUSY_TX) | |
{ | |
/* Disable the DMA transfer for transmit request by resetting the DMAT bit | |
in the USART CR3 register */ | |
CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAT); | |
/* Enable the USART Transmit Complete Interrupt */ | |
__HAL_USART_ENABLE_IT(husart, USART_IT_TC); | |
} | |
} | |
/* DMA Circular mode */ | |
else | |
{ | |
if (husart->State == HAL_USART_STATE_BUSY_TX) | |
{ | |
#if (USE_HAL_USART_REGISTER_CALLBACKS == 1) | |
/* Call registered Tx Complete Callback */ | |
husart->TxCpltCallback(husart); | |
#else | |
/* Call legacy weak Tx Complete Callback */ | |
HAL_USART_TxCpltCallback(husart); | |
#endif /* USE_HAL_USART_REGISTER_CALLBACKS */ | |
} | |
} | |
} | |
/** | |
* @brief DMA USART transmit process half complete callback. | |
* @param hdma DMA handle. | |
* @retval None | |
*/ | |
static void USART_DMATxHalfCplt(DMA_HandleTypeDef *hdma) | |
{ | |
USART_HandleTypeDef *husart = (USART_HandleTypeDef *)(hdma->Parent); | |
#if (USE_HAL_USART_REGISTER_CALLBACKS == 1) | |
/* Call registered Tx Half Complete Callback */ | |
husart->TxHalfCpltCallback(husart); | |
#else | |
/* Call legacy weak Tx Half Complete Callback */ | |
HAL_USART_TxHalfCpltCallback(husart); | |
#endif /* USE_HAL_USART_REGISTER_CALLBACKS */ | |
} | |
/** | |
* @brief DMA USART receive process complete callback. | |
* @param hdma DMA handle. | |
* @retval None | |
*/ | |
static void USART_DMAReceiveCplt(DMA_HandleTypeDef *hdma) | |
{ | |
USART_HandleTypeDef *husart = (USART_HandleTypeDef *)(hdma->Parent); | |
/* DMA Normal mode */ | |
if (hdma->Init.Mode != DMA_CIRCULAR) | |
{ | |
husart->RxXferCount = 0U; | |
/* Disable PE and ERR (Frame error, noise error, overrun error) interrupts */ | |
CLEAR_BIT(husart->Instance->CR1, USART_CR1_PEIE); | |
CLEAR_BIT(husart->Instance->CR3, USART_CR3_EIE); | |
/* Disable the DMA RX transfer for the receiver request by resetting the DMAR bit | |
in USART CR3 register */ | |
CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAR); | |
/* similarly, disable the DMA TX transfer that was started to provide the | |
clock to the slave device */ | |
CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAT); | |
if (husart->State == HAL_USART_STATE_BUSY_RX) | |
{ | |
#if (USE_HAL_USART_REGISTER_CALLBACKS == 1) | |
/* Call registered Rx Complete Callback */ | |
husart->RxCpltCallback(husart); | |
#else | |
/* Call legacy weak Rx Complete Callback */ | |
HAL_USART_RxCpltCallback(husart); | |
#endif /* USE_HAL_USART_REGISTER_CALLBACKS */ | |
} | |
/* The USART state is HAL_USART_STATE_BUSY_TX_RX */ | |
else | |
{ | |
#if (USE_HAL_USART_REGISTER_CALLBACKS == 1) | |
/* Call registered Tx Rx Complete Callback */ | |
husart->TxRxCpltCallback(husart); | |
#else | |
/* Call legacy weak Tx Rx Complete Callback */ | |
HAL_USART_TxRxCpltCallback(husart); | |
#endif /* USE_HAL_USART_REGISTER_CALLBACKS */ | |
} | |
husart->State = HAL_USART_STATE_READY; | |
} | |
/* DMA circular mode */ | |
else | |
{ | |
if (husart->State == HAL_USART_STATE_BUSY_RX) | |
{ | |
#if (USE_HAL_USART_REGISTER_CALLBACKS == 1) | |
/* Call registered Rx Complete Callback */ | |
husart->RxCpltCallback(husart); | |
#else | |
/* Call legacy weak Rx Complete Callback */ | |
HAL_USART_RxCpltCallback(husart); | |
#endif /* USE_HAL_USART_REGISTER_CALLBACKS */ | |
} | |
/* The USART state is HAL_USART_STATE_BUSY_TX_RX */ | |
else | |
{ | |
#if (USE_HAL_USART_REGISTER_CALLBACKS == 1) | |
/* Call registered Tx Rx Complete Callback */ | |
husart->TxRxCpltCallback(husart); | |
#else | |
/* Call legacy weak Tx Rx Complete Callback */ | |
HAL_USART_TxRxCpltCallback(husart); | |
#endif /* USE_HAL_USART_REGISTER_CALLBACKS */ | |
} | |
} | |
} | |
/** | |
* @brief DMA USART receive process half complete callback. | |
* @param hdma DMA handle. | |
* @retval None | |
*/ | |
static void USART_DMARxHalfCplt(DMA_HandleTypeDef *hdma) | |
{ | |
USART_HandleTypeDef *husart = (USART_HandleTypeDef *)(hdma->Parent); | |
#if (USE_HAL_USART_REGISTER_CALLBACKS == 1) | |
/* Call registered Rx Half Complete Callback */ | |
husart->RxHalfCpltCallback(husart); | |
#else | |
/* Call legacy weak Rx Half Complete Callback */ | |
HAL_USART_RxHalfCpltCallback(husart); | |
#endif /* USE_HAL_USART_REGISTER_CALLBACKS */ | |
} | |
/** | |
* @brief DMA USART communication error callback. | |
* @param hdma DMA handle. | |
* @retval None | |
*/ | |
static void USART_DMAError(DMA_HandleTypeDef *hdma) | |
{ | |
USART_HandleTypeDef *husart = (USART_HandleTypeDef *)(hdma->Parent); | |
husart->RxXferCount = 0U; | |
husart->TxXferCount = 0U; | |
USART_EndTransfer(husart); | |
husart->ErrorCode |= HAL_USART_ERROR_DMA; | |
husart->State = HAL_USART_STATE_READY; | |
#if (USE_HAL_USART_REGISTER_CALLBACKS == 1) | |
/* Call registered Error Callback */ | |
husart->ErrorCallback(husart); | |
#else | |
/* Call legacy weak Error Callback */ | |
HAL_USART_ErrorCallback(husart); | |
#endif /* USE_HAL_USART_REGISTER_CALLBACKS */ | |
} | |
/** | |
* @brief DMA USART communication abort callback, when initiated by HAL services on Error | |
* (To be called at end of DMA Abort procedure following error occurrence). | |
* @param hdma DMA handle. | |
* @retval None | |
*/ | |
static void USART_DMAAbortOnError(DMA_HandleTypeDef *hdma) | |
{ | |
USART_HandleTypeDef *husart = (USART_HandleTypeDef *)(hdma->Parent); | |
husart->RxXferCount = 0U; | |
husart->TxXferCount = 0U; | |
#if (USE_HAL_USART_REGISTER_CALLBACKS == 1) | |
/* Call registered Error Callback */ | |
husart->ErrorCallback(husart); | |
#else | |
/* Call legacy weak Error Callback */ | |
HAL_USART_ErrorCallback(husart); | |
#endif /* USE_HAL_USART_REGISTER_CALLBACKS */ | |
} | |
/** | |
* @brief DMA USART Tx communication abort callback, when initiated by user | |
* (To be called at end of DMA Tx Abort procedure following user abort request). | |
* @note When this callback is executed, User Abort complete call back is called only if no | |
* Abort still ongoing for Rx DMA Handle. | |
* @param hdma DMA handle. | |
* @retval None | |
*/ | |
static void USART_DMATxAbortCallback(DMA_HandleTypeDef *hdma) | |
{ | |
USART_HandleTypeDef *husart = (USART_HandleTypeDef *)(hdma->Parent); | |
husart->hdmatx->XferAbortCallback = NULL; | |
/* Check if an Abort process is still ongoing */ | |
if (husart->hdmarx != NULL) | |
{ | |
if (husart->hdmarx->XferAbortCallback != NULL) | |
{ | |
return; | |
} | |
} | |
/* No Abort process still ongoing : All DMA channels are aborted, call user Abort Complete callback */ | |
husart->TxXferCount = 0U; | |
husart->RxXferCount = 0U; | |
/* Reset errorCode */ | |
husart->ErrorCode = HAL_USART_ERROR_NONE; | |
/* Clear the Error flags in the ICR register */ | |
__HAL_USART_CLEAR_FLAG(husart, USART_CLEAR_OREF | USART_CLEAR_NEF | USART_CLEAR_PEF | USART_CLEAR_FEF); | |
/* Restore husart->State to Ready */ | |
husart->State = HAL_USART_STATE_READY; | |
/* Call user Abort complete callback */ | |
#if (USE_HAL_USART_REGISTER_CALLBACKS == 1) | |
/* Call registered Abort Complete Callback */ | |
husart->AbortCpltCallback(husart); | |
#else | |
/* Call legacy weak Abort Complete Callback */ | |
HAL_USART_AbortCpltCallback(husart); | |
#endif /* USE_HAL_USART_REGISTER_CALLBACKS */ | |
} | |
/** | |
* @brief DMA USART Rx communication abort callback, when initiated by user | |
* (To be called at end of DMA Rx Abort procedure following user abort request). | |
* @note When this callback is executed, User Abort complete call back is called only if no | |
* Abort still ongoing for Tx DMA Handle. | |
* @param hdma DMA handle. | |
* @retval None | |
*/ | |
static void USART_DMARxAbortCallback(DMA_HandleTypeDef *hdma) | |
{ | |
USART_HandleTypeDef *husart = (USART_HandleTypeDef *)(hdma->Parent); | |
husart->hdmarx->XferAbortCallback = NULL; | |
/* Check if an Abort process is still ongoing */ | |
if (husart->hdmatx != NULL) | |
{ | |
if (husart->hdmatx->XferAbortCallback != NULL) | |
{ | |
return; | |
} | |
} | |
/* No Abort process still ongoing : All DMA channels are aborted, call user Abort Complete callback */ | |
husart->TxXferCount = 0U; | |
husart->RxXferCount = 0U; | |
/* Reset errorCode */ | |
husart->ErrorCode = HAL_USART_ERROR_NONE; | |
/* Clear the Error flags in the ICR register */ | |
__HAL_USART_CLEAR_FLAG(husart, USART_CLEAR_OREF | USART_CLEAR_NEF | USART_CLEAR_PEF | USART_CLEAR_FEF); | |
/* Restore husart->State to Ready */ | |
husart->State = HAL_USART_STATE_READY; | |
/* Call user Abort complete callback */ | |
#if (USE_HAL_USART_REGISTER_CALLBACKS == 1) | |
/* Call registered Abort Complete Callback */ | |
husart->AbortCpltCallback(husart); | |
#else | |
/* Call legacy weak Abort Complete Callback */ | |
HAL_USART_AbortCpltCallback(husart); | |
#endif /* USE_HAL_USART_REGISTER_CALLBACKS */ | |
} | |
/** | |
* @brief Handle USART Communication Timeout. | |
* @param husart USART handle. | |
* @param Flag Specifies the USART flag to check. | |
* @param Status the Flag status (SET or RESET). | |
* @param Tickstart Tick start value | |
* @param Timeout timeout duration. | |
* @retval HAL status | |
*/ | |
static HAL_StatusTypeDef USART_WaitOnFlagUntilTimeout(USART_HandleTypeDef *husart, uint32_t Flag, FlagStatus Status, uint32_t Tickstart, uint32_t Timeout) | |
{ | |
/* Wait until flag is set */ | |
while ((__HAL_USART_GET_FLAG(husart, Flag) ? SET : RESET) == Status) | |
{ | |
/* Check for the Timeout */ | |
if (Timeout != HAL_MAX_DELAY) | |
{ | |
if (((HAL_GetTick() - Tickstart) > Timeout) || (Timeout == 0U)) | |
{ | |
husart->State = HAL_USART_STATE_READY; | |
/* Process Unlocked */ | |
__HAL_UNLOCK(husart); | |
return HAL_TIMEOUT; | |
} | |
} | |
} | |
return HAL_OK; | |
} | |
/** | |
* @brief Configure the USART peripheral. | |
* @param husart USART handle. | |
* @retval HAL status | |
*/ | |
static HAL_StatusTypeDef USART_SetConfig(USART_HandleTypeDef *husart) | |
{ | |
uint32_t tmpreg; | |
USART_ClockSourceTypeDef clocksource; | |
HAL_StatusTypeDef ret = HAL_OK; | |
uint16_t brrtemp; | |
uint32_t usartdiv = 0x00000000; | |
PLL2_ClocksTypeDef pll2_clocks; | |
PLL3_ClocksTypeDef pll3_clocks; | |
/* Check the parameters */ | |
assert_param(IS_USART_POLARITY(husart->Init.CLKPolarity)); | |
assert_param(IS_USART_PHASE(husart->Init.CLKPhase)); | |
assert_param(IS_USART_LASTBIT(husart->Init.CLKLastBit)); | |
assert_param(IS_USART_BAUDRATE(husart->Init.BaudRate)); | |
assert_param(IS_USART_WORD_LENGTH(husart->Init.WordLength)); | |
assert_param(IS_USART_STOPBITS(husart->Init.StopBits)); | |
assert_param(IS_USART_PARITY(husart->Init.Parity)); | |
assert_param(IS_USART_MODE(husart->Init.Mode)); | |
assert_param(IS_USART_PRESCALER(husart->Init.ClockPrescaler)); | |
/*-------------------------- USART CR1 Configuration -----------------------*/ | |
/* Clear M, PCE, PS, TE and RE bits and configure | |
* the USART Word Length, Parity and Mode: | |
* set the M bits according to husart->Init.WordLength value | |
* set PCE and PS bits according to husart->Init.Parity value | |
* set TE and RE bits according to husart->Init.Mode value | |
* force OVER8 to 1 to allow to reach the maximum speed (Fclock/8) */ | |
tmpreg = (uint32_t)husart->Init.WordLength | husart->Init.Parity | husart->Init.Mode | USART_CR1_OVER8; | |
MODIFY_REG(husart->Instance->CR1, USART_CR1_FIELDS, tmpreg); | |
/*---------------------------- USART CR2 Configuration ---------------------*/ | |
/* Clear and configure the USART Clock, CPOL, CPHA, LBCL STOP and SLVEN bits: | |
* set CPOL bit according to husart->Init.CLKPolarity value | |
* set CPHA bit according to husart->Init.CLKPhase value | |
* set LBCL bit according to husart->Init.CLKLastBit value (used in SPI master mode only) | |
* set STOP[13:12] bits according to husart->Init.StopBits value */ | |
tmpreg = (uint32_t)(USART_CLOCK_ENABLE); | |
tmpreg |= (uint32_t)husart->Init.CLKLastBit; | |
tmpreg |= ((uint32_t)husart->Init.CLKPolarity | (uint32_t)husart->Init.CLKPhase); | |
tmpreg |= (uint32_t)husart->Init.StopBits; | |
MODIFY_REG(husart->Instance->CR2, USART_CR2_FIELDS, tmpreg); | |
/*-------------------------- USART PRESC Configuration -----------------------*/ | |
/* Configure | |
* - USART Clock Prescaler : set PRESCALER according to husart->Init.ClockPrescaler value */ | |
MODIFY_REG(husart->Instance->PRESC, USART_PRESC_PRESCALER, husart->Init.ClockPrescaler); | |
/*-------------------------- USART BRR Configuration -----------------------*/ | |
/* BRR is filled-up according to OVER8 bit setting which is forced to 1 */ | |
USART_GETCLOCKSOURCE(husart, clocksource); | |
switch (clocksource) | |
{ | |
case USART_CLOCKSOURCE_D2PCLK1: | |
usartdiv = (uint32_t)(USART_DIV_SAMPLING8(HAL_RCC_GetPCLK1Freq(), husart->Init.BaudRate, husart->Init.ClockPrescaler)); | |
break; | |
case USART_CLOCKSOURCE_D2PCLK2: | |
usartdiv = (uint32_t)(USART_DIV_SAMPLING8(HAL_RCC_GetPCLK2Freq(), husart->Init.BaudRate, husart->Init.ClockPrescaler)); | |
break; | |
case USART_CLOCKSOURCE_PLL2: | |
HAL_RCCEx_GetPLL2ClockFreq(&pll2_clocks); | |
usartdiv = (uint32_t)(USART_DIV_SAMPLING8(pll2_clocks.PLL2_Q_Frequency, husart->Init.BaudRate, husart->Init.ClockPrescaler)); | |
break; | |
case USART_CLOCKSOURCE_PLL3: | |
HAL_RCCEx_GetPLL3ClockFreq(&pll3_clocks); | |
usartdiv = (uint32_t)(USART_DIV_SAMPLING8(pll3_clocks.PLL3_Q_Frequency, husart->Init.BaudRate, husart->Init.ClockPrescaler)); | |
break; | |
case USART_CLOCKSOURCE_HSI: | |
if (__HAL_RCC_GET_FLAG(RCC_FLAG_HSIDIV) != 0U) | |
{ | |
usartdiv = (uint32_t)(USART_DIV_SAMPLING8((HSI_VALUE >> (__HAL_RCC_GET_HSI_DIVIDER() >> 3U)), husart->Init.BaudRate, husart->Init.ClockPrescaler)); | |
} | |
else | |
{ | |
usartdiv = (uint32_t)(USART_DIV_SAMPLING8(HSI_VALUE, husart->Init.BaudRate, husart->Init.ClockPrescaler)); | |
} | |
break; | |
case USART_CLOCKSOURCE_CSI: | |
usartdiv = (uint32_t)(USART_DIV_SAMPLING8(CSI_VALUE, husart->Init.BaudRate, husart->Init.ClockPrescaler)); | |
break; | |
case USART_CLOCKSOURCE_LSE: | |
usartdiv = (uint32_t)(USART_DIV_SAMPLING8(LSE_VALUE, husart->Init.BaudRate, husart->Init.ClockPrescaler)); | |
break; | |
default: | |
ret = HAL_ERROR; | |
break; | |
} | |
/* USARTDIV must be greater than or equal to 0d16 and smaller than or equal to ffff */ | |
if ((usartdiv >= USART_BRR_MIN) && (usartdiv <= USART_BRR_MAX)) | |
{ | |
brrtemp = (uint16_t)(usartdiv & 0xFFF0U); | |
brrtemp |= (uint16_t)((usartdiv & (uint16_t)0x000FU) >> 1U); | |
husart->Instance->BRR = brrtemp; | |
} | |
else | |
{ | |
ret = HAL_ERROR; | |
} | |
/* Initialize the number of data to process during RX/TX ISR execution */ | |
husart->NbTxDataToProcess = 1U; | |
husart->NbRxDataToProcess = 1U; | |
/* Clear ISR function pointers */ | |
husart->RxISR = NULL; | |
husart->TxISR = NULL; | |
return ret; | |
} | |
/** | |
* @brief Check the USART Idle State. | |
* @param husart USART handle. | |
* @retval HAL status | |
*/ | |
static HAL_StatusTypeDef USART_CheckIdleState(USART_HandleTypeDef *husart) | |
{ | |
uint32_t tickstart; | |
/* Initialize the USART ErrorCode */ | |
husart->ErrorCode = HAL_USART_ERROR_NONE; | |
/* Init tickstart for timeout managment*/ | |
tickstart = HAL_GetTick(); | |
/* Check if the Transmitter is enabled */ | |
if ((husart->Instance->CR1 & USART_CR1_TE) == USART_CR1_TE) | |
{ | |
/* Wait until TEACK flag is set */ | |
if (USART_WaitOnFlagUntilTimeout(husart, USART_ISR_TEACK, RESET, tickstart, USART_TEACK_REACK_TIMEOUT) != HAL_OK) | |
{ | |
/* Timeout occurred */ | |
return HAL_TIMEOUT; | |
} | |
} | |
/* Check if the Receiver is enabled */ | |
if ((husart->Instance->CR1 & USART_CR1_RE) == USART_CR1_RE) | |
{ | |
/* Wait until REACK flag is set */ | |
if (USART_WaitOnFlagUntilTimeout(husart, USART_ISR_REACK, RESET, tickstart, USART_TEACK_REACK_TIMEOUT) != HAL_OK) | |
{ | |
/* Timeout occurred */ | |
return HAL_TIMEOUT; | |
} | |
} | |
/* Initialize the USART state*/ | |
husart->State = HAL_USART_STATE_READY; | |
/* Process Unlocked */ | |
__HAL_UNLOCK(husart); | |
return HAL_OK; | |
} | |
/** | |
* @brief Simplex send an amount of data in non-blocking mode. | |
* @note Function called under interruption only, once | |
* interruptions have been enabled by HAL_USART_Transmit_IT(). | |
* @note The USART errors are not managed to avoid the overrun error. | |
* @note ISR function executed when FIFO mode is disabled and when the | |
* data word length is less than 9 bits long. | |
* @param husart USART handle. | |
* @retval None | |
*/ | |
static void USART_TxISR_8BIT(USART_HandleTypeDef *husart) | |
{ | |
const HAL_USART_StateTypeDef state = husart->State; | |
/* Check that a Tx process is ongoing */ | |
if ((state == HAL_USART_STATE_BUSY_TX) || | |
(state == HAL_USART_STATE_BUSY_TX_RX)) | |
{ | |
if (husart->TxXferCount == 0U) | |
{ | |
/* Disable the USART Transmit data register empty interrupt */ | |
__HAL_USART_DISABLE_IT(husart, USART_IT_TXE); | |
/* Enable the USART Transmit Complete Interrupt */ | |
__HAL_USART_ENABLE_IT(husart, USART_IT_TC); | |
} | |
else | |
{ | |
husart->Instance->TDR = (uint8_t)(*husart->pTxBuffPtr & (uint8_t)0xFF); | |
husart->pTxBuffPtr++; | |
husart->TxXferCount--; | |
} | |
} | |
} | |
/** | |
* @brief Simplex send an amount of data in non-blocking mode. | |
* @note Function called under interruption only, once | |
* interruptions have been enabled by HAL_USART_Transmit_IT(). | |
* @note The USART errors are not managed to avoid the overrun error. | |
* @note ISR function executed when FIFO mode is disabled and when the | |
* data word length is 9 bits long. | |
* @param husart USART handle. | |
* @retval None | |
*/ | |
static void USART_TxISR_16BIT(USART_HandleTypeDef *husart) | |
{ | |
const HAL_USART_StateTypeDef state = husart->State; | |
uint16_t *tmp; | |
if ((state == HAL_USART_STATE_BUSY_TX) || | |
(state == HAL_USART_STATE_BUSY_TX_RX)) | |
{ | |
if (husart->TxXferCount == 0U) | |
{ | |
/* Disable the USART Transmit data register empty interrupt */ | |
__HAL_USART_DISABLE_IT(husart, USART_IT_TXE); | |
/* Enable the USART Transmit Complete Interrupt */ | |
__HAL_USART_ENABLE_IT(husart, USART_IT_TC); | |
} | |
else | |
{ | |
tmp = (uint16_t *) husart->pTxBuffPtr; | |
husart->Instance->TDR = (uint16_t)(*tmp & 0x01FFU); | |
husart->pTxBuffPtr += 2U; | |
husart->TxXferCount--; | |
} | |
} | |
} | |
/** | |
* @brief Simplex send an amount of data in non-blocking mode. | |
* @note Function called under interruption only, once | |
* interruptions have been enabled by HAL_USART_Transmit_IT(). | |
* @note The USART errors are not managed to avoid the overrun error. | |
* @note ISR function executed when FIFO mode is enabled and when the | |
* data word length is less than 9 bits long. | |
* @param husart USART handle. | |
* @retval None | |
*/ | |
static void USART_TxISR_8BIT_FIFOEN(USART_HandleTypeDef *husart) | |
{ | |
const HAL_USART_StateTypeDef state = husart->State; | |
uint16_t nb_tx_data; | |
/* Check that a Tx process is ongoing */ | |
if ((state == HAL_USART_STATE_BUSY_TX) || | |
(state == HAL_USART_STATE_BUSY_TX_RX)) | |
{ | |
for (nb_tx_data = husart->NbTxDataToProcess ; nb_tx_data > 0U ; nb_tx_data--) | |
{ | |
if (husart->TxXferCount == 0U) | |
{ | |
/* Disable the TX FIFO threshold interrupt */ | |
__HAL_USART_DISABLE_IT(husart, USART_IT_TXFT); | |
/* Enable the USART Transmit Complete Interrupt */ | |
__HAL_USART_ENABLE_IT(husart, USART_IT_TC); | |
break; /* force exit loop */ | |
} | |
else if (__HAL_USART_GET_FLAG(husart, USART_FLAG_TXFNF) == SET) | |
{ | |
husart->Instance->TDR = (uint8_t)(*husart->pTxBuffPtr & (uint8_t)0xFF); | |
husart->pTxBuffPtr++; | |
husart->TxXferCount--; | |
} | |
else | |
{ | |
/* Nothing to do */ | |
} | |
} | |
} | |
} | |
/** | |
* @brief Simplex send an amount of data in non-blocking mode. | |
* @note Function called under interruption only, once | |
* interruptions have been enabled by HAL_USART_Transmit_IT(). | |
* @note The USART errors are not managed to avoid the overrun error. | |
* @note ISR function executed when FIFO mode is enabled and when the | |
* data word length is 9 bits long. | |
* @param husart USART handle. | |
* @retval None | |
*/ | |
static void USART_TxISR_16BIT_FIFOEN(USART_HandleTypeDef *husart) | |
{ | |
const HAL_USART_StateTypeDef state = husart->State; | |
uint16_t *tmp; | |
uint16_t nb_tx_data; | |
/* Check that a Tx process is ongoing */ | |
if ((state == HAL_USART_STATE_BUSY_TX) || | |
(state == HAL_USART_STATE_BUSY_TX_RX)) | |
{ | |
for (nb_tx_data = husart->NbTxDataToProcess ; nb_tx_data > 0U ; nb_tx_data--) | |
{ | |
if (husart->TxXferCount == 0U) | |
{ | |
/* Disable the TX FIFO threshold interrupt */ | |
__HAL_USART_DISABLE_IT(husart, USART_IT_TXFT); | |
/* Enable the USART Transmit Complete Interrupt */ | |
__HAL_USART_ENABLE_IT(husart, USART_IT_TC); | |
break; /* force exit loop */ | |
} | |
else if (__HAL_USART_GET_FLAG(husart, USART_FLAG_TXFNF) == SET) | |
{ | |
tmp = (uint16_t *) husart->pTxBuffPtr; | |
husart->Instance->TDR = (uint16_t)(*tmp & 0x01FFU); | |
husart->pTxBuffPtr += 2U; | |
husart->TxXferCount--; | |
} | |
else | |
{ | |
/* Nothing to do */ | |
} | |
} | |
} | |
} | |
/** | |
* @brief Wraps up transmission in non-blocking mode. | |
* @param husart Pointer to a USART_HandleTypeDef structure that contains | |
* the configuration information for the specified USART module. | |
* @retval None | |
*/ | |
static void USART_EndTransmit_IT(USART_HandleTypeDef *husart) | |
{ | |
/* Disable the USART Transmit Complete Interrupt */ | |
__HAL_USART_DISABLE_IT(husart, USART_IT_TC); | |
/* Disable the USART Error Interrupt: (Frame error, noise error, overrun error) */ | |
__HAL_USART_DISABLE_IT(husart, USART_IT_ERR); | |
/* Clear TxISR function pointer */ | |
husart->TxISR = NULL; | |
if (husart->State == HAL_USART_STATE_BUSY_TX) | |
{ | |
/* Clear overrun flag and discard the received data */ | |
__HAL_USART_CLEAR_OREFLAG(husart); | |
__HAL_USART_SEND_REQ(husart, USART_RXDATA_FLUSH_REQUEST); | |
/* Tx process is completed, restore husart->State to Ready */ | |
husart->State = HAL_USART_STATE_READY; | |
#if (USE_HAL_USART_REGISTER_CALLBACKS == 1) | |
/* Call registered Tx Complete Callback */ | |
husart->TxCpltCallback(husart); | |
#else | |
/* Call legacy weak Tx Complete Callback */ | |
HAL_USART_TxCpltCallback(husart); | |
#endif /* USE_HAL_USART_REGISTER_CALLBACKS */ | |
} | |
else if (husart->RxXferCount == 0U) | |
{ | |
/* TxRx process is completed, restore husart->State to Ready */ | |
husart->State = HAL_USART_STATE_READY; | |
#if (USE_HAL_USART_REGISTER_CALLBACKS == 1) | |
/* Call registered Tx Rx Complete Callback */ | |
husart->TxRxCpltCallback(husart); | |
#else | |
/* Call legacy weak Tx Rx Complete Callback */ | |
HAL_USART_TxRxCpltCallback(husart); | |
#endif /* USE_HAL_USART_REGISTER_CALLBACKS */ | |
} | |
else | |
{ | |
/* Nothing to do */ | |
} | |
} | |
/** | |
* @brief Simplex receive an amount of data in non-blocking mode. | |
* @note Function called under interruption only, once | |
* interruptions have been enabled by HAL_USART_Receive_IT(). | |
* @note ISR function executed when FIFO mode is disabled and when the | |
* data word length is less than 9 bits long. | |
* @param husart USART handle | |
* @retval None | |
*/ | |
static void USART_RxISR_8BIT(USART_HandleTypeDef *husart) | |
{ | |
const HAL_USART_StateTypeDef state = husart->State; | |
uint16_t txdatacount; | |
uint16_t uhMask = husart->Mask; | |
uint32_t txftie; | |
if ((state == HAL_USART_STATE_BUSY_RX) || | |
(state == HAL_USART_STATE_BUSY_TX_RX)) | |
{ | |
*husart->pRxBuffPtr = (uint8_t)(husart->Instance->RDR & (uint8_t)uhMask); | |
husart->pRxBuffPtr++; | |
husart->RxXferCount--; | |
if (husart->RxXferCount == 0U) | |
{ | |
/* Disable the USART Parity Error Interrupt and RXNE interrupt*/ | |
CLEAR_BIT(husart->Instance->CR1, (USART_CR1_RXNEIE_RXFNEIE | USART_CR1_PEIE)); | |
/* Disable the USART Error Interrupt: (Frame error, noise error, overrun error) */ | |
CLEAR_BIT(husart->Instance->CR3, USART_CR3_EIE); | |
/* Clear RxISR function pointer */ | |
husart->RxISR = NULL; | |
/* txftie and txdatacount are temporary variables for MISRAC2012-Rule-13.5 */ | |
txftie = READ_BIT(husart->Instance->CR3, USART_CR3_TXFTIE); | |
txdatacount = husart->TxXferCount; | |
if (state == HAL_USART_STATE_BUSY_RX) | |
{ | |
/* Clear SPI slave underrun flag and discard transmit data */ | |
if (husart->SlaveMode == USART_SLAVEMODE_ENABLE) | |
{ | |
__HAL_USART_CLEAR_UDRFLAG(husart); | |
__HAL_USART_SEND_REQ(husart, USART_TXDATA_FLUSH_REQUEST); | |
} | |
/* Rx process is completed, restore husart->State to Ready */ | |
husart->State = HAL_USART_STATE_READY; | |
#if (USE_HAL_USART_REGISTER_CALLBACKS == 1) | |
/* Call registered Rx Complete Callback */ | |
husart->RxCpltCallback(husart); | |
#else | |
/* Call legacy weak Rx Complete Callback */ | |
HAL_USART_RxCpltCallback(husart); | |
#endif /* USE_HAL_USART_REGISTER_CALLBACKS */ | |
} | |
else if ((READ_BIT(husart->Instance->CR1, USART_CR1_TCIE) != USART_CR1_TCIE) && | |
(txftie != USART_CR3_TXFTIE) && | |
(txdatacount == 0U)) | |
{ | |
/* TxRx process is completed, restore husart->State to Ready */ | |
husart->State = HAL_USART_STATE_READY; | |
#if (USE_HAL_USART_REGISTER_CALLBACKS == 1) | |
/* Call registered Tx Rx Complete Callback */ | |
husart->TxRxCpltCallback(husart); | |
#else | |
/* Call legacy weak Tx Rx Complete Callback */ | |
HAL_USART_TxRxCpltCallback(husart); | |
#endif /* USE_HAL_USART_REGISTER_CALLBACKS */ | |
} | |
else | |
{ | |
/* Nothing to do */ | |
} | |
} | |
else if ((state == HAL_USART_STATE_BUSY_RX) && | |
(husart->SlaveMode == USART_SLAVEMODE_DISABLE)) | |
{ | |
/* Send dummy byte in order to generate the clock for the Slave to Send the next data */ | |
husart->Instance->TDR = (USART_DUMMY_DATA & (uint16_t)0x00FF); | |
} | |
else | |
{ | |
/* Nothing to do */ | |
} | |
} | |
} | |
/** | |
* @brief Simplex receive an amount of data in non-blocking mode. | |
* @note Function called under interruption only, once | |
* interruptions have been enabled by HAL_USART_Receive_IT(). | |
* @note ISR function executed when FIFO mode is disabled and when the | |
* data word length is 9 bits long. | |
* @param husart USART handle | |
* @retval None | |
*/ | |
static void USART_RxISR_16BIT(USART_HandleTypeDef *husart) | |
{ | |
const HAL_USART_StateTypeDef state = husart->State; | |
uint16_t txdatacount; | |
uint16_t *tmp; | |
uint16_t uhMask = husart->Mask; | |
uint32_t txftie; | |
if ((state == HAL_USART_STATE_BUSY_RX) || | |
(state == HAL_USART_STATE_BUSY_TX_RX)) | |
{ | |
tmp = (uint16_t *) husart->pRxBuffPtr; | |
*tmp = (uint16_t)(husart->Instance->RDR & uhMask); | |
husart->pRxBuffPtr += 2U; | |
husart->RxXferCount--; | |
if (husart->RxXferCount == 0U) | |
{ | |
/* Disable the USART Parity Error Interrupt and RXNE interrupt*/ | |
CLEAR_BIT(husart->Instance->CR1, (USART_CR1_RXNEIE_RXFNEIE | USART_CR1_PEIE)); | |
/* Disable the USART Error Interrupt: (Frame error, noise error, overrun error) */ | |
CLEAR_BIT(husart->Instance->CR3, USART_CR3_EIE); | |
/* Clear RxISR function pointer */ | |
husart->RxISR = NULL; | |
/* txftie and txdatacount are temporary variables for MISRAC2012-Rule-13.5 */ | |
txftie = READ_BIT(husart->Instance->CR3, USART_CR3_TXFTIE); | |
txdatacount = husart->TxXferCount; | |
if (state == HAL_USART_STATE_BUSY_RX) | |
{ | |
/* Clear SPI slave underrun flag and discard transmit data */ | |
if (husart->SlaveMode == USART_SLAVEMODE_ENABLE) | |
{ | |
__HAL_USART_CLEAR_UDRFLAG(husart); | |
__HAL_USART_SEND_REQ(husart, USART_TXDATA_FLUSH_REQUEST); | |
} | |
/* Rx process is completed, restore husart->State to Ready */ | |
husart->State = HAL_USART_STATE_READY; | |
#if (USE_HAL_USART_REGISTER_CALLBACKS == 1) | |
/* Call registered Rx Complete Callback */ | |
husart->RxCpltCallback(husart); | |
#else | |
/* Call legacy weak Rx Complete Callback */ | |
HAL_USART_RxCpltCallback(husart); | |
#endif /* USE_HAL_USART_REGISTER_CALLBACKS */ | |
} | |
else if ((READ_BIT(husart->Instance->CR1, USART_CR1_TCIE) != USART_CR1_TCIE) && | |
(txftie != USART_CR3_TXFTIE) && | |
(txdatacount == 0U)) | |
{ | |
/* TxRx process is completed, restore husart->State to Ready */ | |
husart->State = HAL_USART_STATE_READY; | |
#if (USE_HAL_USART_REGISTER_CALLBACKS == 1) | |
/* Call registered Tx Rx Complete Callback */ | |
husart->TxRxCpltCallback(husart); | |
#else | |
/* Call legacy weak Tx Rx Complete Callback */ | |
HAL_USART_TxRxCpltCallback(husart); | |
#endif /* USE_HAL_USART_REGISTER_CALLBACKS */ | |
} | |
else | |
{ | |
/* Nothing to do */ | |
} | |
} | |
else if ((state == HAL_USART_STATE_BUSY_RX) && | |
(husart->SlaveMode == USART_SLAVEMODE_DISABLE)) | |
{ | |
/* Send dummy byte in order to generate the clock for the Slave to Send the next data */ | |
husart->Instance->TDR = (USART_DUMMY_DATA & (uint16_t)0x00FF); | |
} | |
else | |
{ | |
/* Nothing to do */ | |
} | |
} | |
} | |
/** | |
* @brief Simplex receive an amount of data in non-blocking mode. | |
* @note Function called under interruption only, once | |
* interruptions have been enabled by HAL_USART_Receive_IT(). | |
* @note ISR function executed when FIFO mode is enabled and when the | |
* data word length is less than 9 bits long. | |
* @param husart USART handle | |
* @retval None | |
*/ | |
static void USART_RxISR_8BIT_FIFOEN(USART_HandleTypeDef *husart) | |
{ | |
HAL_USART_StateTypeDef state = husart->State; | |
uint16_t txdatacount; | |
uint16_t rxdatacount; | |
uint16_t uhMask = husart->Mask; | |
uint16_t nb_rx_data; | |
uint32_t txftie; | |
/* Check that a Rx process is ongoing */ | |
if ((state == HAL_USART_STATE_BUSY_RX) || | |
(state == HAL_USART_STATE_BUSY_TX_RX)) | |
{ | |
for (nb_rx_data = husart->NbRxDataToProcess ; nb_rx_data > 0U ; nb_rx_data--) | |
{ | |
if (__HAL_USART_GET_FLAG(husart, USART_FLAG_RXFNE) == SET) | |
{ | |
*husart->pRxBuffPtr = (uint8_t)(husart->Instance->RDR & (uint8_t)(uhMask & 0xFFU)); | |
husart->pRxBuffPtr++; | |
husart->RxXferCount--; | |
if (husart->RxXferCount == 0U) | |
{ | |
/* Disable the USART Parity Error Interrupt */ | |
CLEAR_BIT(husart->Instance->CR1, USART_CR1_PEIE); | |
/* Disable the USART Error Interrupt: (Frame error, noise error, overrun error) and RX FIFO Threshold interrupt */ | |
CLEAR_BIT(husart->Instance->CR3, (USART_CR3_EIE | USART_CR3_RXFTIE)); | |
/* Clear RxISR function pointer */ | |
husart->RxISR = NULL; | |
/* txftie and txdatacount are temporary variables for MISRAC2012-Rule-13.5 */ | |
txftie = READ_BIT(husart->Instance->CR3, USART_CR3_TXFTIE); | |
txdatacount = husart->TxXferCount; | |
if (state == HAL_USART_STATE_BUSY_RX) | |
{ | |
/* Clear SPI slave underrun flag and discard transmit data */ | |
if (husart->SlaveMode == USART_SLAVEMODE_ENABLE) | |
{ | |
__HAL_USART_CLEAR_UDRFLAG(husart); | |
__HAL_USART_SEND_REQ(husart, USART_TXDATA_FLUSH_REQUEST); | |
} | |
/* Rx process is completed, restore husart->State to Ready */ | |
husart->State = HAL_USART_STATE_READY; | |
state = HAL_USART_STATE_READY; | |
#if (USE_HAL_USART_REGISTER_CALLBACKS == 1) | |
/* Call registered Rx Complete Callback */ | |
husart->RxCpltCallback(husart); | |
#else | |
/* Call legacy weak Rx Complete Callback */ | |
HAL_USART_RxCpltCallback(husart); | |
#endif /* USE_HAL_USART_REGISTER_CALLBACKS */ | |
} | |
else if ((READ_BIT(husart->Instance->CR1, USART_CR1_TCIE) != USART_CR1_TCIE) && | |
(txftie != USART_CR3_TXFTIE) && | |
(txdatacount == 0U)) | |
{ | |
/* TxRx process is completed, restore husart->State to Ready */ | |
husart->State = HAL_USART_STATE_READY; | |
state = HAL_USART_STATE_READY; | |
#if (USE_HAL_USART_REGISTER_CALLBACKS == 1) | |
/* Call registered Tx Rx Complete Callback */ | |
husart->TxRxCpltCallback(husart); | |
#else | |
/* Call legacy weak Tx Rx Complete Callback */ | |
HAL_USART_TxRxCpltCallback(husart); | |
#endif /* USE_HAL_USART_REGISTER_CALLBACKS */ | |
} | |
else | |
{ | |
/* Nothing to do */ | |
} | |
} | |
else if ((state == HAL_USART_STATE_BUSY_RX) && | |
(husart->SlaveMode == USART_SLAVEMODE_DISABLE)) | |
{ | |
/* Send dummy byte in order to generate the clock for the Slave to Send the next data */ | |
husart->Instance->TDR = (USART_DUMMY_DATA & (uint16_t)0x00FF); | |
} | |
else | |
{ | |
/* Nothing to do */ | |
} | |
} | |
} | |
/* When remaining number of bytes to receive is less than the RX FIFO | |
threshold, next incoming frames are processed as if FIFO mode was | |
disabled (i.e. one interrupt per received frame). | |
*/ | |
rxdatacount = husart->RxXferCount; | |
if (((rxdatacount != 0U)) && (rxdatacount < husart->NbRxDataToProcess)) | |
{ | |
/* Disable the USART RXFT interrupt*/ | |
CLEAR_BIT(husart->Instance->CR3, USART_CR3_RXFTIE); | |
/* Update the RxISR function pointer */ | |
husart->RxISR = USART_RxISR_8BIT; | |
/* Enable the USART Data Register Not Empty interrupt */ | |
SET_BIT(husart->Instance->CR1, USART_CR1_RXNEIE_RXFNEIE); | |
if ((husart->TxXferCount == 0U) && | |
(state == HAL_USART_STATE_BUSY_TX_RX) && | |
(husart->SlaveMode == USART_SLAVEMODE_DISABLE)) | |
{ | |
/* Send dummy byte in order to generate the clock for the Slave to Send the next data */ | |
husart->Instance->TDR = (USART_DUMMY_DATA & (uint16_t)0x00FF); | |
} | |
} | |
} | |
else | |
{ | |
/* Clear RXNE interrupt flag */ | |
__HAL_USART_SEND_REQ(husart, USART_RXDATA_FLUSH_REQUEST); | |
} | |
} | |
/** | |
* @brief Simplex receive an amount of data in non-blocking mode. | |
* @note Function called under interruption only, once | |
* interruptions have been enabled by HAL_USART_Receive_IT(). | |
* @note ISR function executed when FIFO mode is enabled and when the | |
* data word length is 9 bits long. | |
* @param husart USART handle | |
* @retval None | |
*/ | |
static void USART_RxISR_16BIT_FIFOEN(USART_HandleTypeDef *husart) | |
{ | |
HAL_USART_StateTypeDef state = husart->State; | |
uint16_t txdatacount; | |
uint16_t rxdatacount; | |
uint16_t *tmp; | |
uint16_t uhMask = husart->Mask; | |
uint16_t nb_rx_data; | |
uint32_t txftie; | |
/* Check that a Tx process is ongoing */ | |
if ((state == HAL_USART_STATE_BUSY_RX) || | |
(state == HAL_USART_STATE_BUSY_TX_RX)) | |
{ | |
for (nb_rx_data = husart->NbRxDataToProcess ; nb_rx_data > 0U ; nb_rx_data--) | |
{ | |
if (__HAL_USART_GET_FLAG(husart, USART_FLAG_RXFNE) == SET) | |
{ | |
tmp = (uint16_t *) husart->pRxBuffPtr; | |
*tmp = (uint16_t)(husart->Instance->RDR & uhMask); | |
husart->pRxBuffPtr += 2U; | |
husart->RxXferCount--; | |
if (husart->RxXferCount == 0U) | |
{ | |
/* Disable the USART Parity Error Interrupt */ | |
CLEAR_BIT(husart->Instance->CR1, USART_CR1_PEIE); | |
/* Disable the USART Error Interrupt: (Frame error, noise error, overrun error) and RX FIFO Threshold interrupt */ | |
CLEAR_BIT(husart->Instance->CR3, (USART_CR3_EIE | USART_CR3_RXFTIE)); | |
/* Clear RxISR function pointer */ | |
husart->RxISR = NULL; | |
/* txftie and txdatacount are temporary variables for MISRAC2012-Rule-13.5 */ | |
txftie = READ_BIT(husart->Instance->CR3, USART_CR3_TXFTIE); | |
txdatacount = husart->TxXferCount; | |
if (state == HAL_USART_STATE_BUSY_RX) | |
{ | |
/* Clear SPI slave underrun flag and discard transmit data */ | |
if (husart->SlaveMode == USART_SLAVEMODE_ENABLE) | |
{ | |
__HAL_USART_CLEAR_UDRFLAG(husart); | |
__HAL_USART_SEND_REQ(husart, USART_TXDATA_FLUSH_REQUEST); | |
} | |
/* Rx process is completed, restore husart->State to Ready */ | |
husart->State = HAL_USART_STATE_READY; | |
state = HAL_USART_STATE_READY; | |
#if (USE_HAL_USART_REGISTER_CALLBACKS == 1) | |
/* Call registered Rx Complete Callback */ | |
husart->RxCpltCallback(husart); | |
#else | |
/* Call legacy weak Rx Complete Callback */ | |
HAL_USART_RxCpltCallback(husart); | |
#endif /* USE_HAL_USART_REGISTER_CALLBACKS */ | |
} | |
else if ((READ_BIT(husart->Instance->CR1, USART_CR1_TCIE) != USART_CR1_TCIE) && | |
(txftie != USART_CR3_TXFTIE) && | |
(txdatacount == 0U)) | |
{ | |
/* TxRx process is completed, restore husart->State to Ready */ | |
husart->State = HAL_USART_STATE_READY; | |
state = HAL_USART_STATE_READY; | |
#if (USE_HAL_USART_REGISTER_CALLBACKS == 1) | |
/* Call registered Tx Rx Complete Callback */ | |
husart->TxRxCpltCallback(husart); | |
#else | |
/* Call legacy weak Tx Rx Complete Callback */ | |
HAL_USART_TxRxCpltCallback(husart); | |
#endif /* USE_HAL_USART_REGISTER_CALLBACKS */ | |
} | |
else | |
{ | |
/* Nothing to do */ | |
} | |
} | |
else if ((state == HAL_USART_STATE_BUSY_RX) && | |
(husart->SlaveMode == USART_SLAVEMODE_DISABLE)) | |
{ | |
/* Send dummy byte in order to generate the clock for the Slave to Send the next data */ | |
husart->Instance->TDR = (USART_DUMMY_DATA & (uint16_t)0x00FF); | |
} | |
else | |
{ | |
/* Nothing to do */ | |
} | |
} | |
} | |
/* When remaining number of bytes to receive is less than the RX FIFO | |
threshold, next incoming frames are processed as if FIFO mode was | |
disabled (i.e. one interrupt per received frame). | |
*/ | |
rxdatacount = husart->RxXferCount; | |
if (((rxdatacount != 0U)) && (rxdatacount < husart->NbRxDataToProcess)) | |
{ | |
/* Disable the USART RXFT interrupt*/ | |
CLEAR_BIT(husart->Instance->CR3, USART_CR3_RXFTIE); | |
/* Update the RxISR function pointer */ | |
husart->RxISR = USART_RxISR_16BIT; | |
/* Enable the USART Data Register Not Empty interrupt */ | |
SET_BIT(husart->Instance->CR1, USART_CR1_RXNEIE_RXFNEIE); | |
if ((husart->TxXferCount == 0U) && | |
(state == HAL_USART_STATE_BUSY_TX_RX) && | |
(husart->SlaveMode == USART_SLAVEMODE_DISABLE)) | |
{ | |
/* Send dummy byte in order to generate the clock for the Slave to Send the next data */ | |
husart->Instance->TDR = (USART_DUMMY_DATA & (uint16_t)0x00FF); | |
} | |
} | |
} | |
else | |
{ | |
/* Clear RXNE interrupt flag */ | |
__HAL_USART_SEND_REQ(husart, USART_RXDATA_FLUSH_REQUEST); | |
} | |
} | |
/** | |
* @} | |
*/ | |
#endif /* HAL_USART_MODULE_ENABLED */ | |
/** | |
* @} | |
*/ | |
/** | |
* @} | |
*/ | |
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |