/** | |
****************************************************************************** | |
* @file stm32l4xx_hal_swpmi.c | |
* @author MCD Application Team | |
* @version V1.6.0 | |
* @date 28-October-2016 | |
* @brief SWPMI HAL module driver. | |
* This file provides firmware functions to manage the following | |
* functionalities of the Single Wire Protocol Master Interface (SWPMI). | |
* + Initialization and Configuration | |
* + Data transfers functions | |
* + DMA transfers management | |
* + Interrupts and flags management | |
@verbatim | |
=============================================================================== | |
##### How to use this driver ##### | |
=============================================================================== | |
[..] | |
The SWPMI HAL driver can be used as follows: | |
(#) Declare a SWPMI_HandleTypeDef handle structure (eg. SWPMI_HandleTypeDef hswpmi). | |
(#) Initialize the SWPMI low level resources by implementing the HAL_SWPMI_MspInit() API: | |
(##) Enable the SWPMIx interface clock with __HAL_RCC_SWPMIx_CLK_ENABLE(). | |
(##) SWPMI IO configuration: | |
(+++) Enable the clock for the SWPMI GPIO. | |
(+++) Configure these SWPMI pins as alternate function pull-up. | |
(##) NVIC configuration if you need to use interrupt process (HAL_SWPMI_Transmit_IT() | |
and HAL_SWPMI_Receive_IT() APIs): | |
(+++) Configure the SWPMIx interrupt priority with HAL_NVIC_SetPriority(). | |
(+++) Enable the NVIC SWPMI IRQ handle with HAL_NVIC_EnableIRQ(). | |
(##) DMA Configuration if you need to use DMA process (HAL_SWPMI_Transmit_DMA() | |
and HAL_SWPMI_Receive_DMA() APIs): | |
(+++) Declare a DMA handle structure for the Tx/Rx channels. | |
(+++) Enable the DMAx interface clock. | |
(+++) Configure the declared DMA handle structure with the required | |
Tx/Rx parameters. | |
(+++) Configure the DMA Tx/Rx channels and requests. | |
(+++) Associate the initialized DMA handle to the SWPMI DMA Tx/Rx handle. | |
(+++) Configure the priority and enable the NVIC for the transfer complete | |
interrupt on the DMA Tx/Rx channels. | |
(#) Program the Bite Rate, Tx Buffering mode, Rx Buffering mode in the Init structure. | |
(#) Enable the SWPMI peripheral by calling the HAL_SWPMI_Init() function. | |
@endverbatim | |
****************************************************************************** | |
* @attention | |
* | |
* <h2><center>© COPYRIGHT(c) 2016 STMicroelectronics</center></h2> | |
* | |
* Redistribution and use in source and binary forms, with or without modification, | |
* are permitted provided that the following conditions are met: | |
* 1. Redistributions of source code must retain the above copyright notice, | |
* this list of conditions and the following disclaimer. | |
* 2. Redistributions in binary form must reproduce the above copyright notice, | |
* this list of conditions and the following disclaimer in the documentation | |
* and/or other materials provided with the distribution. | |
* 3. Neither the name of STMicroelectronics nor the names of its contributors | |
* may be used to endorse or promote products derived from this software | |
* without specific prior written permission. | |
* | |
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | |
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE | |
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR | |
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER | |
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, | |
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
* | |
****************************************************************************** | |
*/ | |
/* Includes ------------------------------------------------------------------*/ | |
#include "stm32l4xx_hal.h" | |
#if defined(STM32L431xx) || defined(STM32L432xx) || defined(STM32L433xx) || defined(STM32L442xx) || defined(STM32L443xx) || \ | |
defined(STM32L471xx) || defined(STM32L475xx) || defined(STM32L476xx) || defined(STM32L485xx) || defined(STM32L486xx) | |
/** @addtogroup STM32L4xx_HAL_Driver | |
* @{ | |
*/ | |
/** @defgroup SWPMI SWPMI | |
* @brief HAL SWPMI module driver | |
* @{ | |
*/ | |
#ifdef HAL_SWPMI_MODULE_ENABLED | |
/* Private typedef -----------------------------------------------------------*/ | |
/* Private define ------------------------------------------------------------*/ | |
/* Private constants ---------------------------------------------------------*/ | |
/** @addtogroup SWPMI_Private_Constants SWPMI Private Constants | |
* @{ | |
*/ | |
#define SWPMI_TIMEOUT_VALUE ((uint32_t) 22000) | |
/** | |
* @} | |
*/ | |
/* Private macros ------------------------------------------------------------*/ | |
/* Private variables ---------------------------------------------------------*/ | |
/* Private function prototypes -----------------------------------------------*/ | |
static void SWPMI_DMATransmitCplt(DMA_HandleTypeDef *hdma); | |
static void SWPMI_DMATxHalfCplt(DMA_HandleTypeDef *hdma); | |
static void SWPMI_DMAReceiveCplt(DMA_HandleTypeDef *hdma); | |
static void SWPMI_DMARxHalfCplt(DMA_HandleTypeDef *hdma); | |
static void SWPMI_DMAError(DMA_HandleTypeDef *hdma); | |
static void SWPMI_DMAAbortOnError(DMA_HandleTypeDef *hdma); | |
static HAL_StatusTypeDef SWPMI_Transmit_IT(SWPMI_HandleTypeDef *hswpmi); | |
static HAL_StatusTypeDef SWPMI_EndTransmit_IT(SWPMI_HandleTypeDef *hswpmi); | |
static HAL_StatusTypeDef SWPMI_Receive_IT(SWPMI_HandleTypeDef *hswpmi); | |
static HAL_StatusTypeDef SWPMI_EndReceive_IT(SWPMI_HandleTypeDef *hswpmi); | |
static HAL_StatusTypeDef SWPMI_EndTransmitReceive_IT(SWPMI_HandleTypeDef *hswpmi); | |
static HAL_StatusTypeDef SWPMI_WaitOnFlagSetUntilTimeout(SWPMI_HandleTypeDef *hswpmi, uint32_t Flag, uint32_t Tickstart, uint32_t Timeout); | |
/* Exported functions --------------------------------------------------------*/ | |
/** @defgroup SWPMI_Exported_Functions SWPMI Exported Functions | |
* @{ | |
*/ | |
/** @defgroup SWPMI_Exported_Group1 Initialization/de-initialization methods | |
* @brief Initialization and Configuration functions | |
* | |
@verbatim | |
=============================================================================== | |
##### Initialization and Configuration functions ##### | |
=============================================================================== | |
[..] This section provides functions allowing to: | |
(+) Initialize and configure the SWPMI peripheral. | |
(+) De-initialize the SWPMI peripheral. | |
@endverbatim | |
* @{ | |
*/ | |
/** | |
* @brief Initialize the SWPMI peripheral according to the specified parameters in the SWPMI_InitTypeDef. | |
* @param hswpmi: SWPMI handle | |
* @retval HAL status | |
*/ | |
HAL_StatusTypeDef HAL_SWPMI_Init(SWPMI_HandleTypeDef *hswpmi) | |
{ | |
HAL_StatusTypeDef status = HAL_OK; | |
__IO uint32_t wait_loop_index = 0; | |
/* Check the SWPMI handle allocation */ | |
if(hswpmi == NULL) | |
{ | |
status = HAL_ERROR; | |
} | |
else | |
{ | |
/* Check the parameters */ | |
assert_param(IS_SWPMI_VOLTAGE_CLASS(hswpmi->Init.VoltageClass)); | |
assert_param(IS_SWPMI_BITRATE_VALUE(hswpmi->Init.BitRate)); | |
assert_param(IS_SWPMI_TX_BUFFERING_MODE(hswpmi->Init.TxBufferingMode)); | |
assert_param(IS_SWPMI_RX_BUFFERING_MODE(hswpmi->Init.RxBufferingMode)); | |
if(hswpmi->State == HAL_SWPMI_STATE_RESET) | |
{ | |
/* Allocate lock resource and initialize it */ | |
hswpmi->Lock = HAL_UNLOCKED; | |
} | |
hswpmi->State = HAL_SWPMI_STATE_BUSY; | |
/* Disable SWPMI interface */ | |
CLEAR_BIT(hswpmi->Instance->CR, SWPMI_CR_SWPACT); | |
/* Clear all SWPMI interface flags */ | |
WRITE_REG(hswpmi->Instance->ICR, 0x019F); | |
/* Apply Voltage class selection */ | |
MODIFY_REG(hswpmi->Instance->OR, SWPMI_OR_CLASS, hswpmi->Init.VoltageClass); | |
/* Init the low level hardware : GPIO, CLOCK, CORTEX */ | |
HAL_SWPMI_MspInit(hswpmi); | |
/* If Voltage class B, apply 300 µs delay */ | |
if(hswpmi->Init.VoltageClass == SWPMI_VOLTAGE_CLASS_B) | |
{ | |
/* Insure 300 µs wait to insure SWPMI_IO output not higher than 1.8V */ | |
/* Wait loop initialization and execution */ | |
/* Note: Variable divided by 4 to compensate partially CPU processing cycles. */ | |
wait_loop_index = (300 * (SystemCoreClock / (1000000 * 4))) + 150; | |
while(wait_loop_index != 0) | |
{ | |
wait_loop_index--; | |
} | |
} | |
/* Configure the BRR register (Bitrate) */ | |
WRITE_REG(hswpmi->Instance->BRR, hswpmi->Init.BitRate); | |
/* Apply SWPMI CR configuration */ | |
MODIFY_REG(hswpmi->Instance->CR, \ | |
SWPMI_CR_RXDMA | SWPMI_CR_TXDMA | SWPMI_CR_RXMODE | SWPMI_CR_TXMODE, \ | |
hswpmi->Init.TxBufferingMode | hswpmi->Init.RxBufferingMode); | |
hswpmi->ErrorCode = HAL_SWPMI_ERROR_NONE; | |
hswpmi->State = HAL_SWPMI_STATE_READY; | |
/* Enable SWPMI peripheral if not */ | |
SET_BIT(hswpmi->Instance->CR, SWPMI_CR_SWPACT); | |
} | |
return status; | |
} | |
/** | |
* @brief De-initialize the SWPMI peripheral. | |
* @param hswpmi: SWPMI handle | |
* @retval HAL status | |
*/ | |
HAL_StatusTypeDef HAL_SWPMI_DeInit(SWPMI_HandleTypeDef *hswpmi) | |
{ | |
HAL_StatusTypeDef status = HAL_OK; | |
/* Check the SWPMI handle allocation */ | |
if(hswpmi == NULL) | |
{ | |
status = HAL_ERROR; | |
} | |
else | |
{ | |
/* Check the parameters */ | |
assert_param(IS_SWPMI_INSTANCE(hswpmi->Instance)); | |
hswpmi->State = HAL_SWPMI_STATE_BUSY; | |
/* Disable SWPMI interface */ | |
CLEAR_BIT(hswpmi->Instance->CR, SWPMI_CR_SWPACT); | |
/* DeInit the low level hardware */ | |
HAL_SWPMI_MspDeInit(hswpmi); | |
hswpmi->ErrorCode = HAL_SWPMI_ERROR_NONE; | |
hswpmi->State = HAL_SWPMI_STATE_RESET; | |
/* Release Lock */ | |
__HAL_UNLOCK(hswpmi); | |
} | |
return status; | |
} | |
/** | |
* @brief Initialize the SWPMI MSP. | |
* @param hswpmi: SWPMI handle | |
* @retval None | |
*/ | |
__weak void HAL_SWPMI_MspInit(SWPMI_HandleTypeDef *hswpmi) | |
{ | |
/* Prevent unused argument(s) compilation warning */ | |
UNUSED(hswpmi); | |
/* NOTE : This function should not be modified, when the callback is needed, | |
the HAL_SWPMI_MspInit can be implemented in the user file | |
*/ | |
} | |
/** | |
* @brief DeInitialize the SWPMI MSP. | |
* @param hswpmi: SWPMI handle | |
* @retval None | |
*/ | |
__weak void HAL_SWPMI_MspDeInit(SWPMI_HandleTypeDef *hswpmi) | |
{ | |
/* Prevent unused argument(s) compilation warning */ | |
UNUSED(hswpmi); | |
/* NOTE : This function should not be modified, when the callback is needed, | |
the HAL_SWPMI_MspDeInit can be implemented in the user file | |
*/ | |
} | |
/** | |
* @} | |
*/ | |
/** @defgroup SWPMI_Exported_Group2 IO operation methods | |
* @brief SWPMI Transmit/Receive functions | |
* | |
@verbatim | |
=============================================================================== | |
##### IO operation methods ##### | |
=============================================================================== | |
[..] | |
This subsection provides a set of functions allowing to manage the SWPMI | |
data transfers. | |
(#) 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. | |
(++) Non-Blocking mode: The communication is performed using Interrupts | |
or DMA. The end of the data processing will be indicated through the | |
dedicated SWPMI Interrupt handler (HAL_SWPMI_IRQHandler()) when using Interrupt mode or | |
the selected DMA channel interrupt handler when using DMA mode. | |
The HAL_SWPMI_TxCpltCallback(), HAL_SWPMI_RxCpltCallback() user callbacks | |
will be executed respectively at the end of the transmit or receive process. | |
The HAL_SWPMI_ErrorCallback() user callback will be executed when a communication error is detected. | |
(#) Blocking mode API's are: | |
(++) HAL_SWPMI_Transmit() | |
(++) HAL_SWPMI_Receive() | |
(#) Non-Blocking mode API's with Interrupt are: | |
(++) HAL_SWPMI_Transmit_IT() | |
(++) HAL_SWPMI_Receive_IT() | |
(++) HAL_SWPMI_IRQHandler() | |
(#) Non-Blocking mode API's with DMA are: | |
(++) HAL_SWPMI_Transmit_DMA() | |
(++) HAL_SWPMI_Receive_DMA() | |
(++) HAL_SWPMI_DMAPause() | |
(++) HAL_SWPMI_DMAResume() | |
(++) HAL_SWPMI_DMAStop() | |
(#) A set of Transfer Complete Callbacks are provided in Non-Blocking mode: | |
(++) HAL_SWPMI_TxHalfCpltCallback() | |
(++) HAL_SWPMI_TxCpltCallback() | |
(++) HAL_SWPMI_RxHalfCpltCallback() | |
(++) HAL_SWPMI_RxCpltCallback() | |
(++) HAL_SWPMI_ErrorCallback() | |
(#) The capability to launch the above IO operations in loopback mode for | |
user application verification: | |
(++) HAL_SWPMI_EnableLoopback() | |
(++) HAL_SWPMI_DisableLoopback() | |
@endverbatim | |
* @{ | |
*/ | |
/** | |
* @brief Transmit an amount of data in blocking mode. | |
* @param hswpmi: pointer to a SWPMI_HandleTypeDef structure that contains | |
* the configuration information for SWPMI module. | |
* @param pData: Pointer to data buffer | |
* @param Size: Amount of data to be sent | |
* @param Timeout: Timeout duration | |
* @retval HAL status | |
*/ | |
HAL_StatusTypeDef HAL_SWPMI_Transmit(SWPMI_HandleTypeDef *hswpmi, uint32_t* pData, uint16_t Size, uint32_t Timeout) | |
{ | |
uint32_t tickstart = HAL_GetTick(); | |
HAL_StatusTypeDef status = HAL_OK; | |
if((pData == NULL ) || (Size == 0)) | |
{ | |
status = HAL_ERROR; | |
} | |
else | |
{ | |
/* Process Locked */ | |
__HAL_LOCK(hswpmi); | |
if((hswpmi->State == HAL_SWPMI_STATE_READY) || (hswpmi->State == HAL_SWPMI_STATE_BUSY_RX)) | |
{ | |
/* Check if a non-blocking receive process is ongoing or not */ | |
if(hswpmi->State == HAL_SWPMI_STATE_READY) | |
{ | |
hswpmi->State = HAL_SWPMI_STATE_BUSY_TX; | |
/* Disable any transmitter interrupts */ | |
__HAL_SWPMI_DISABLE_IT(hswpmi, SWPMI_IT_TCIE | SWPMI_IT_TIE | SWPMI_IT_TXUNRIE | SWPMI_IT_TXBEIE); | |
/* Disable any transmitter flags */ | |
__HAL_SWPMI_CLEAR_FLAG(hswpmi, SWPMI_FLAG_TXBEF | SWPMI_FLAG_TXUNRF | SWPMI_FLAG_TCF); | |
/* Enable SWPMI peripheral if not */ | |
SET_BIT(hswpmi->Instance->CR, SWPMI_CR_SWPACT); | |
} | |
else | |
{ | |
hswpmi->State = HAL_SWPMI_STATE_BUSY_TX_RX; | |
} | |
do | |
{ | |
/* Wait the TXE to write data */ | |
if(HAL_IS_BIT_SET(hswpmi->Instance->ISR, SWPMI_FLAG_TXE)) | |
{ | |
hswpmi->Instance->TDR = (*pData++); | |
Size--; | |
} | |
else | |
{ | |
/* Check for the Timeout */ | |
if(Timeout != HAL_MAX_DELAY) | |
{ | |
if((Timeout == 0) || ((HAL_GetTick() - tickstart) > Timeout)) | |
{ | |
status = HAL_TIMEOUT; | |
break; | |
} | |
} | |
} | |
} while(Size != 0); | |
/* Wait on TXBEF flag to be able to start a second transfer */ | |
if(SWPMI_WaitOnFlagSetUntilTimeout(hswpmi, SWPMI_FLAG_TXBEF, tickstart, Timeout) != HAL_OK) | |
{ | |
status = HAL_TIMEOUT; | |
} | |
if(status == HAL_OK) | |
{ | |
/* Check if a non-blocking receive Process is ongoing or not */ | |
if(hswpmi->State == HAL_SWPMI_STATE_BUSY_TX_RX) | |
{ | |
hswpmi->State = HAL_SWPMI_STATE_BUSY_RX; | |
} | |
else | |
{ | |
hswpmi->State = HAL_SWPMI_STATE_READY; | |
} | |
} | |
} | |
else | |
{ | |
status = HAL_BUSY; | |
} | |
} | |
if((status != HAL_OK) && (status != HAL_BUSY)) | |
{ | |
hswpmi->State = HAL_SWPMI_STATE_READY; | |
} | |
/* Process Unlocked */ | |
__HAL_UNLOCK(hswpmi); | |
return status; | |
} | |
/** | |
* @brief Receive an amount of data in blocking mode. | |
* @param hswpmi: pointer to a SWPMI_HandleTypeDef structure that contains | |
* the configuration information for SWPMI module. | |
* @param pData: Pointer to data buffer | |
* @param Size: Amount of data to be received | |
* @param Timeout: Timeout duration | |
* @retval HAL status | |
*/ | |
HAL_StatusTypeDef HAL_SWPMI_Receive(SWPMI_HandleTypeDef *hswpmi, uint32_t *pData, uint16_t Size, uint32_t Timeout) | |
{ | |
uint32_t tickstart = HAL_GetTick(); | |
HAL_StatusTypeDef status = HAL_OK; | |
if((pData == NULL ) || (Size == 0)) | |
{ | |
status = HAL_ERROR; | |
} | |
else | |
{ | |
/* Process Locked */ | |
__HAL_LOCK(hswpmi); | |
if((hswpmi->State == HAL_SWPMI_STATE_READY) || (hswpmi->State == HAL_SWPMI_STATE_BUSY_TX)) | |
{ | |
/* Check if a non-blocking transmit process is ongoing or not */ | |
if(hswpmi->State == HAL_SWPMI_STATE_READY) | |
{ | |
hswpmi->State = HAL_SWPMI_STATE_BUSY_RX; | |
/* Disable any receiver interrupts */ | |
CLEAR_BIT(hswpmi->Instance->IER, SWPMI_IT_SRIE | SWPMI_IT_RIE | SWPMI_IT_RXBERIE | SWPMI_IT_RXOVRIE | SWPMI_IT_RXBFIE); | |
/* Enable SWPMI peripheral if not */ | |
SET_BIT(hswpmi->Instance->CR, SWPMI_CR_SWPACT); | |
} | |
else | |
{ | |
hswpmi->State = HAL_SWPMI_STATE_BUSY_TX_RX; | |
} | |
do | |
{ | |
/* Wait the RXNE to read data */ | |
if(HAL_IS_BIT_SET(hswpmi->Instance->ISR, SWPMI_FLAG_RXNE)) | |
{ | |
(*pData++) = hswpmi->Instance->RDR; | |
Size--; | |
} | |
else | |
{ | |
/* Check for the Timeout */ | |
if(Timeout != HAL_MAX_DELAY) | |
{ | |
if((Timeout == 0) || ((HAL_GetTick() - tickstart) > Timeout)) | |
{ | |
status = HAL_TIMEOUT; | |
break; | |
} | |
} | |
} | |
} while(Size != 0); | |
if(status == HAL_OK) | |
{ | |
if(HAL_IS_BIT_SET(hswpmi->Instance->ISR, SWPMI_FLAG_RXBFF)) | |
{ | |
/* Clear RXBFF at end of reception */ | |
WRITE_REG(hswpmi->Instance->ICR, SWPMI_FLAG_RXBFF); | |
} | |
/* Check if a non-blocking transmit Process is ongoing or not */ | |
if(hswpmi->State == HAL_SWPMI_STATE_BUSY_TX_RX) | |
{ | |
hswpmi->State = HAL_SWPMI_STATE_BUSY_TX; | |
} | |
else | |
{ | |
hswpmi->State = HAL_SWPMI_STATE_READY; | |
} | |
} | |
} | |
else | |
{ | |
status = HAL_BUSY; | |
} | |
} | |
if((status != HAL_OK) && (status != HAL_BUSY)) | |
{ | |
hswpmi->State = HAL_SWPMI_STATE_READY; | |
} | |
/* Process Unlocked */ | |
__HAL_UNLOCK(hswpmi); | |
return status; | |
} | |
/** | |
* @brief Transmit an amount of data in non-blocking mode with interrupt. | |
* @param hswpmi: pointer to a SWPMI_HandleTypeDef structure that contains | |
* the configuration information for SWPMI module. | |
* @param pData: Pointer to data buffer | |
* @param Size: Amount of data to be sent | |
* @retval HAL status | |
*/ | |
HAL_StatusTypeDef HAL_SWPMI_Transmit_IT(SWPMI_HandleTypeDef *hswpmi, uint32_t *pData, uint16_t Size) | |
{ | |
HAL_StatusTypeDef status = HAL_OK; | |
if((pData == NULL ) || (Size == 0)) | |
{ | |
status = HAL_ERROR; | |
} | |
else | |
{ | |
/* Process Locked */ | |
__HAL_LOCK(hswpmi); | |
if((hswpmi->State == HAL_SWPMI_STATE_READY) || (hswpmi->State == HAL_SWPMI_STATE_BUSY_RX)) | |
{ | |
/* Update handle */ | |
hswpmi->pTxBuffPtr = pData; | |
hswpmi->TxXferSize = Size; | |
hswpmi->TxXferCount = Size; | |
hswpmi->ErrorCode = HAL_SWPMI_ERROR_NONE; | |
/* Check if a receive process is ongoing or not */ | |
if(hswpmi->State == HAL_SWPMI_STATE_READY) | |
{ | |
hswpmi->State = HAL_SWPMI_STATE_BUSY_TX; | |
/* Enable SWPMI peripheral if not */ | |
SET_BIT(hswpmi->Instance->CR, SWPMI_CR_SWPACT); | |
} | |
else | |
{ | |
hswpmi->State = HAL_SWPMI_STATE_BUSY_TX_RX; | |
} | |
/* Enable the SWPMI transmit underrun error */ | |
__HAL_SWPMI_ENABLE_IT(hswpmi, SWPMI_IT_TXUNRIE); | |
/* Process Unlocked */ | |
__HAL_UNLOCK(hswpmi); | |
/* Enable the SWPMI interrupts: */ | |
/* - Transmit data register empty */ | |
/* - Transmit buffer empty */ | |
/* - Transmit/Reception completion */ | |
__HAL_SWPMI_ENABLE_IT(hswpmi, SWPMI_IT_TIE | SWPMI_IT_TXBEIE | SWPMI_IT_TCIE); | |
} | |
else | |
{ | |
status = HAL_BUSY; | |
/* Process Unlocked */ | |
__HAL_UNLOCK(hswpmi); | |
} | |
} | |
return status; | |
} | |
/** | |
* @brief Receive an amount of data in non-blocking mode with interrupt. | |
* @param hswpmi: SWPMI handle | |
* @param pData: pointer to data buffer | |
* @param Size: amount of data to be received | |
* @retval HAL status | |
*/ | |
HAL_StatusTypeDef HAL_SWPMI_Receive_IT(SWPMI_HandleTypeDef *hswpmi, uint32_t *pData, uint16_t Size) | |
{ | |
HAL_StatusTypeDef status = HAL_OK; | |
if((pData == NULL ) || (Size == 0)) | |
{ | |
status = HAL_ERROR; | |
} | |
else | |
{ | |
/* Process Locked */ | |
__HAL_LOCK(hswpmi); | |
if((hswpmi->State == HAL_SWPMI_STATE_READY) || (hswpmi->State == HAL_SWPMI_STATE_BUSY_TX)) | |
{ | |
/* Update handle */ | |
hswpmi->pRxBuffPtr = pData; | |
hswpmi->RxXferSize = Size; | |
hswpmi->RxXferCount = Size; | |
hswpmi->ErrorCode = HAL_SWPMI_ERROR_NONE; | |
/* Check if a transmit process is ongoing or not */ | |
if(hswpmi->State == HAL_SWPMI_STATE_READY) | |
{ | |
hswpmi->State = HAL_SWPMI_STATE_BUSY_RX; | |
/* Enable SWPMI peripheral if not */ | |
SET_BIT(hswpmi->Instance->CR, SWPMI_CR_SWPACT); | |
} | |
else | |
{ | |
hswpmi->State = HAL_SWPMI_STATE_BUSY_TX_RX; | |
} | |
/* Process Unlocked */ | |
__HAL_UNLOCK(hswpmi); | |
/* Enable the SWPMI slave resume */ | |
/* Enable the SWPMI Data Register not empty Interrupt, receive CRC Error, receive overrun and RxBuf Interrupt */ | |
/* Enable the SWPMI Transmit/Reception completion */ | |
__HAL_SWPMI_ENABLE_IT(hswpmi, SWPMI_IT_RIE | SWPMI_IT_RXBERIE | SWPMI_IT_RXOVRIE | SWPMI_IT_RXBFIE); | |
} | |
else | |
{ | |
status = HAL_BUSY; | |
/* Process Unlocked */ | |
__HAL_UNLOCK(hswpmi); | |
} | |
} | |
return status; | |
} | |
/** | |
* @brief Transmit an amount of data in non-blocking mode with DMA interrupt. | |
* @param hswpmi: SWPMI handle | |
* @param pData: pointer to data buffer | |
* @param Size: amount of data to be sent | |
* @retval HAL status | |
*/ | |
HAL_StatusTypeDef HAL_SWPMI_Transmit_DMA(SWPMI_HandleTypeDef *hswpmi, uint32_t *pData, uint16_t Size) | |
{ | |
HAL_StatusTypeDef status = HAL_OK; | |
if((pData == NULL ) || (Size == 0)) | |
{ | |
status = HAL_ERROR; | |
} | |
else | |
{ | |
/* Process Locked */ | |
__HAL_LOCK(hswpmi); | |
if((hswpmi->State == HAL_SWPMI_STATE_READY) || (hswpmi->State == HAL_SWPMI_STATE_BUSY_RX)) | |
{ | |
/* Update handle */ | |
hswpmi->pTxBuffPtr = pData; | |
hswpmi->TxXferSize = Size; | |
hswpmi->TxXferCount = Size; | |
hswpmi->ErrorCode = HAL_SWPMI_ERROR_NONE; | |
/* Check if a receive process is ongoing or not */ | |
if(hswpmi->State == HAL_SWPMI_STATE_READY) | |
{ | |
hswpmi->State = HAL_SWPMI_STATE_BUSY_TX; | |
/* Enable SWPMI peripheral if not */ | |
SET_BIT(hswpmi->Instance->CR, SWPMI_CR_SWPACT); | |
} | |
else | |
{ | |
hswpmi->State = HAL_SWPMI_STATE_BUSY_TX_RX; | |
} | |
/* Set the SWPMI DMA transfer complete callback */ | |
hswpmi->hdmatx->XferCpltCallback = SWPMI_DMATransmitCplt; | |
/* Set the SWPMI DMA Half transfer complete callback */ | |
hswpmi->hdmatx->XferHalfCpltCallback = SWPMI_DMATxHalfCplt; | |
/* Set the DMA error callback */ | |
hswpmi->hdmatx->XferErrorCallback = SWPMI_DMAError; | |
/* Enable the SWPMI transmit DMA Channel */ | |
HAL_DMA_Start_IT(hswpmi->hdmatx, (uint32_t)hswpmi->pTxBuffPtr, (uint32_t)&hswpmi->Instance->TDR, Size); | |
/* Process Unlocked */ | |
__HAL_UNLOCK(hswpmi); | |
/* Enable the SWPMI transmit underrun error */ | |
__HAL_SWPMI_ENABLE_IT(hswpmi, SWPMI_IT_TXUNRIE); | |
/* Enable the DMA transfer for transmit request by setting the TXDMA bit | |
in the SWPMI CR register */ | |
SET_BIT(hswpmi->Instance->CR, SWPMI_CR_TXDMA); | |
} | |
else | |
{ | |
status = HAL_BUSY; | |
/* Process Unlocked */ | |
__HAL_UNLOCK(hswpmi); | |
} | |
} | |
return status; | |
} | |
/** | |
* @brief Receive an amount of data in non-blocking mode with DMA interrupt. | |
* @param hswpmi: SWPMI handle | |
* @param pData: pointer to data buffer | |
* @param Size: amount of data to be received | |
* @retval HAL status | |
*/ | |
HAL_StatusTypeDef HAL_SWPMI_Receive_DMA(SWPMI_HandleTypeDef *hswpmi, uint32_t *pData, uint16_t Size) | |
{ | |
HAL_StatusTypeDef status = HAL_OK; | |
if((pData == NULL ) || (Size == 0)) | |
{ | |
status = HAL_ERROR; | |
} | |
else | |
{ | |
/* Process Locked */ | |
__HAL_LOCK(hswpmi); | |
if((hswpmi->State == HAL_SWPMI_STATE_READY) || (hswpmi->State == HAL_SWPMI_STATE_BUSY_TX)) | |
{ | |
/* Update handle */ | |
hswpmi->pRxBuffPtr = pData; | |
hswpmi->RxXferSize = Size; | |
hswpmi->ErrorCode = HAL_SWPMI_ERROR_NONE; | |
/* Check if a transmit process is ongoing or not */ | |
if(hswpmi->State == HAL_SWPMI_STATE_READY) | |
{ | |
hswpmi->State = HAL_SWPMI_STATE_BUSY_RX; | |
/* Enable SWPMI peripheral if not */ | |
SET_BIT(hswpmi->Instance->CR, SWPMI_CR_SWPACT); | |
} | |
else | |
{ | |
hswpmi->State = HAL_SWPMI_STATE_BUSY_TX_RX; | |
} | |
/* Set the SWPMI DMA transfer complete callback */ | |
hswpmi->hdmarx->XferCpltCallback = SWPMI_DMAReceiveCplt; | |
/* Set the SWPMI DMA Half transfer complete callback */ | |
hswpmi->hdmarx->XferHalfCpltCallback = SWPMI_DMARxHalfCplt; | |
/* Set the DMA error callback */ | |
hswpmi->hdmarx->XferErrorCallback = SWPMI_DMAError; | |
/* Enable the DMA request */ | |
HAL_DMA_Start_IT(hswpmi->hdmarx, (uint32_t)&hswpmi->Instance->RDR, (uint32_t)hswpmi->pRxBuffPtr, Size); | |
/* Process Unlocked */ | |
__HAL_UNLOCK(hswpmi); | |
/* Enable the SWPMI receive CRC Error and receive overrun interrupts */ | |
__HAL_SWPMI_ENABLE_IT(hswpmi, SWPMI_IT_RXBERIE | SWPMI_IT_RXOVRIE); | |
/* Enable the DMA transfer for the receiver request by setting the RXDMA bit | |
in the SWPMI CR register */ | |
SET_BIT(hswpmi->Instance->CR, SWPMI_CR_RXDMA); | |
} | |
else | |
{ | |
status = HAL_BUSY; | |
/* Process Unlocked */ | |
__HAL_UNLOCK(hswpmi); | |
} | |
} | |
return status; | |
} | |
/** | |
* @brief Stop all DMA transfers. | |
* @param hswpmi: SWPMI handle | |
* @retval HAL_OK | |
*/ | |
HAL_StatusTypeDef HAL_SWPMI_DMAStop(SWPMI_HandleTypeDef *hswpmi) | |
{ | |
/* Process Locked */ | |
__HAL_LOCK(hswpmi); | |
/* Disable the SWPMI Tx/Rx DMA requests */ | |
CLEAR_BIT(hswpmi->Instance->CR, (SWPMI_CR_TXDMA | SWPMI_CR_RXDMA)); | |
/* Abort the SWPMI DMA tx channel */ | |
if(hswpmi->hdmatx != NULL) | |
{ | |
HAL_DMA_Abort(hswpmi->hdmatx); | |
} | |
/* Abort the SWPMI DMA rx channel */ | |
if(hswpmi->hdmarx != NULL) | |
{ | |
HAL_DMA_Abort(hswpmi->hdmarx); | |
} | |
/* Disable SWPMI interface */ | |
CLEAR_BIT(hswpmi->Instance->CR, SWPMI_CR_SWPACT); | |
hswpmi->State = HAL_SWPMI_STATE_READY; | |
/* Process Unlocked */ | |
__HAL_UNLOCK(hswpmi); | |
return HAL_OK; | |
} | |
/** | |
* @brief Enable the Loopback mode. | |
* @param hswpmi: SWPMI handle | |
* @note Loopback mode is to be used only for test purposes | |
* @retval HAL_OK / HAL_BUSY | |
*/ | |
HAL_StatusTypeDef HAL_SWPMI_EnableLoopback(SWPMI_HandleTypeDef *hswpmi) | |
{ | |
HAL_StatusTypeDef status = HAL_OK; | |
/* Process Locked */ | |
__HAL_LOCK(hswpmi); | |
/* Check SWPMI not enabled */ | |
if(READ_BIT(hswpmi->Instance->CR, SWPMI_CR_SWPACT) != RESET) | |
{ | |
status = HAL_BUSY; | |
} | |
else | |
{ | |
/* Set Loopback */ | |
SET_BIT(hswpmi->Instance->CR, SWPMI_CR_LPBK); | |
} | |
/* Process Unlocked */ | |
__HAL_UNLOCK(hswpmi); | |
return status; | |
} | |
/** | |
* @brief Disable the Loopback mode. | |
* @param hswpmi: SWPMI handle | |
* @note Loopback mode is to be used only for test purposes | |
* @retval HAL_OK / HAL_BUSY | |
*/ | |
HAL_StatusTypeDef HAL_SWPMI_DisableLoopback(SWPMI_HandleTypeDef *hswpmi) | |
{ | |
HAL_StatusTypeDef status = HAL_OK; | |
/* Process Locked */ | |
__HAL_LOCK(hswpmi); | |
/* Check SWPMI not enabled */ | |
if(READ_BIT(hswpmi->Instance->CR, SWPMI_CR_SWPACT) != RESET) | |
{ | |
status = HAL_BUSY; | |
} | |
else | |
{ | |
/* Reset Loopback */ | |
CLEAR_BIT(hswpmi->Instance->CR, SWPMI_CR_LPBK); | |
} | |
/* Process Unlocked */ | |
__HAL_UNLOCK(hswpmi); | |
return status; | |
} | |
/** | |
* @} | |
*/ | |
/** @defgroup SWPMI_Exported_Group3 SWPMI IRQ handler and callbacks | |
* @brief SWPMI IRQ handler. | |
* | |
@verbatim | |
============================================================================== | |
##### SWPMI IRQ handler and callbacks ##### | |
============================================================================== | |
[..] This section provides SWPMI IRQ handler and callback functions called within | |
the IRQ handler. | |
@endverbatim | |
* @{ | |
*/ | |
/** | |
* @brief Handle SWPMI interrupt request. | |
* @param hswpmi: SWPMI handle | |
* @retval None | |
*/ | |
void HAL_SWPMI_IRQHandler(SWPMI_HandleTypeDef *hswpmi) | |
{ | |
uint32_t regisr = READ_REG(hswpmi->Instance->ISR); | |
uint32_t regier = READ_REG(hswpmi->Instance->IER); | |
uint32_t errcode = HAL_SWPMI_ERROR_NONE; | |
/* SWPMI CRC error interrupt occurred --------------------------------------*/ | |
if(((regisr & SWPMI_FLAG_RXBERF) != RESET) && ((regier & SWPMI_IT_RXBERIE) != RESET)) | |
{ | |
/* Disable Receive CRC interrupt */ | |
CLEAR_BIT(hswpmi->Instance->IER, SWPMI_IT_RXBERIE | SWPMI_IT_RXBFIE); | |
/* Clear Receive CRC and Receive buffer full flag */ | |
WRITE_REG(hswpmi->Instance->ICR, SWPMI_FLAG_RXBERF | SWPMI_FLAG_RXBFF); | |
errcode |= HAL_SWPMI_ERROR_CRC; | |
} | |
/* SWPMI Over-Run interrupt occurred -----------------------------------------*/ | |
if(((regisr & SWPMI_FLAG_RXOVRF) != RESET) && ((regier & SWPMI_IT_RXOVRIE) != RESET)) | |
{ | |
/* Disable Receive overrun interrupt */ | |
CLEAR_BIT(hswpmi->Instance->IER, SWPMI_IT_RXOVRIE); | |
/* Clear Receive overrun flag */ | |
WRITE_REG(hswpmi->Instance->ICR, SWPMI_FLAG_RXOVRF); | |
errcode |= HAL_SWPMI_ERROR_OVR; | |
} | |
/* SWPMI Under-Run interrupt occurred -----------------------------------------*/ | |
if(((regisr & SWPMI_FLAG_TXUNRF) != RESET) && ((regier & SWPMI_IT_TXUNRIE) != RESET)) | |
{ | |
/* Disable Transmit under run interrupt */ | |
CLEAR_BIT(hswpmi->Instance->IER, SWPMI_IT_TXUNRIE); | |
/* Clear Transmit under run flag */ | |
WRITE_REG(hswpmi->Instance->ICR, SWPMI_FLAG_TXUNRF); | |
errcode |= HAL_SWPMI_ERROR_UDR; | |
} | |
/* Call SWPMI Error Call back function if needed --------------------------*/ | |
if(errcode != HAL_SWPMI_ERROR_NONE) | |
{ | |
hswpmi->ErrorCode |= errcode; | |
if((errcode & HAL_SWPMI_ERROR_UDR) != RESET) | |
{ | |
/* Check TXDMA transfer to abort */ | |
if(HAL_IS_BIT_SET(hswpmi->Instance->CR, SWPMI_CR_TXDMA)) | |
{ | |
/* Disable DMA TX at SWPMI level */ | |
CLEAR_BIT(hswpmi->Instance->CR, SWPMI_CR_TXDMA); | |
/* Abort the USART DMA Tx channel */ | |
if(hswpmi->hdmatx != NULL) | |
{ | |
/* Set the SWPMI Tx DMA Abort callback : | |
will lead to call HAL_SWPMI_ErrorCallback() at end of DMA abort procedure */ | |
hswpmi->hdmatx->XferAbortCallback = SWPMI_DMAAbortOnError; | |
/* Abort DMA TX */ | |
if(HAL_DMA_Abort_IT(hswpmi->hdmatx) != HAL_OK) | |
{ | |
/* Call Directly hswpmi->hdmatx->XferAbortCallback function in case of error */ | |
hswpmi->hdmatx->XferAbortCallback(hswpmi->hdmatx); | |
} | |
} | |
else | |
{ | |
/* Set the SWPMI state ready to be able to start again the process */ | |
hswpmi->State = HAL_SWPMI_STATE_READY; | |
HAL_SWPMI_ErrorCallback(hswpmi); | |
} | |
} | |
else | |
{ | |
/* Set the SWPMI state ready to be able to start again the process */ | |
hswpmi->State = HAL_SWPMI_STATE_READY; | |
HAL_SWPMI_ErrorCallback(hswpmi); | |
} | |
} | |
else | |
{ | |
/* Check RXDMA transfer to abort */ | |
if(HAL_IS_BIT_SET(hswpmi->Instance->CR, SWPMI_CR_RXDMA)) | |
{ | |
/* Disable DMA RX at SWPMI level */ | |
CLEAR_BIT(hswpmi->Instance->CR, SWPMI_CR_RXDMA); | |
/* Abort the USART DMA Rx channel */ | |
if(hswpmi->hdmarx != NULL) | |
{ | |
/* Set the SWPMI Rx DMA Abort callback : | |
will lead to call HAL_SWPMI_ErrorCallback() at end of DMA abort procedure */ | |
hswpmi->hdmarx->XferAbortCallback = SWPMI_DMAAbortOnError; | |
/* Abort DMA RX */ | |
if(HAL_DMA_Abort_IT(hswpmi->hdmarx) != HAL_OK) | |
{ | |
/* Call Directly hswpmi->hdmarx->XferAbortCallback function in case of error */ | |
hswpmi->hdmarx->XferAbortCallback(hswpmi->hdmarx); | |
} | |
} | |
else | |
{ | |
/* Set the SWPMI state ready to be able to start again the process */ | |
hswpmi->State = HAL_SWPMI_STATE_READY; | |
HAL_SWPMI_ErrorCallback(hswpmi); | |
} | |
} | |
else | |
{ | |
/* Set the SWPMI state ready to be able to start again the process */ | |
hswpmi->State = HAL_SWPMI_STATE_READY; | |
HAL_SWPMI_ErrorCallback(hswpmi); | |
} | |
} | |
} | |
/* SWPMI in mode Receiver ---------------------------------------------------*/ | |
if(((regisr & SWPMI_FLAG_RXNE) != RESET) && ((regier & SWPMI_IT_RIE) != RESET)) | |
{ | |
SWPMI_Receive_IT(hswpmi); | |
} | |
/* SWPMI in mode Transmitter ------------------------------------------------*/ | |
if(((regisr & SWPMI_FLAG_TXE) != RESET) && ((regier & SWPMI_IT_TIE) != RESET)) | |
{ | |
SWPMI_Transmit_IT(hswpmi); | |
} | |
/* SWPMI in mode Transmitter (Transmit buffer empty) ------------------------*/ | |
if(((regisr & SWPMI_FLAG_TXBEF) != RESET) && ((regier & SWPMI_IT_TXBEIE) != RESET)) | |
{ | |
SWPMI_EndTransmit_IT(hswpmi); | |
} | |
/* SWPMI in mode Receiver (Receive buffer full) -----------------------------*/ | |
if(((regisr & SWPMI_FLAG_RXBFF) != RESET) && ((regier & SWPMI_IT_RXBFIE) != RESET)) | |
{ | |
SWPMI_EndReceive_IT(hswpmi); | |
} | |
/* Both Transmission and reception complete ---------------------------------*/ | |
if(((regisr & SWPMI_FLAG_TCF) != RESET) && ((regier & SWPMI_IT_TCIE) != RESET)) | |
{ | |
SWPMI_EndTransmitReceive_IT(hswpmi); | |
} | |
} | |
/** | |
* @brief Tx Transfer completed callback. | |
* @param hswpmi: SWPMI handle | |
* @retval None | |
*/ | |
__weak void HAL_SWPMI_TxCpltCallback(SWPMI_HandleTypeDef *hswpmi) | |
{ | |
/* Prevent unused argument(s) compilation warning */ | |
UNUSED(hswpmi); | |
/* NOTE : This function should not be modified, when the callback is needed, | |
the HAL_SWPMI_TxCpltCallback is to be implemented in the user file | |
*/ | |
} | |
/** | |
* @brief Tx Half Transfer completed callback. | |
* @param hswpmi: SWPMI handle | |
* @retval None | |
*/ | |
__weak void HAL_SWPMI_TxHalfCpltCallback(SWPMI_HandleTypeDef *hswpmi) | |
{ | |
/* Prevent unused argument(s) compilation warning */ | |
UNUSED(hswpmi); | |
/* NOTE: This function should not be modified, when the callback is needed, | |
the HAL_SWPMI_TxHalfCpltCallback is to be implemented in the user file | |
*/ | |
} | |
/** | |
* @brief Rx Transfer completed callback. | |
* @param hswpmi: SWPMI handle | |
* @retval None | |
*/ | |
__weak void HAL_SWPMI_RxCpltCallback(SWPMI_HandleTypeDef *hswpmi) | |
{ | |
/* Prevent unused argument(s) compilation warning */ | |
UNUSED(hswpmi); | |
/* NOTE : This function should not be modified, when the callback is needed, | |
the HAL_SWPMI_RxCpltCallback is to be implemented in the user file | |
*/ | |
} | |
/** | |
* @brief Rx Half Transfer completed callback. | |
* @param hswpmi: SWPMI handle | |
* @retval None | |
*/ | |
__weak void HAL_SWPMI_RxHalfCpltCallback(SWPMI_HandleTypeDef *hswpmi) | |
{ | |
/* Prevent unused argument(s) compilation warning */ | |
UNUSED(hswpmi); | |
/* NOTE: This function should not be modified, when the callback is needed, | |
the HAL_SWPMI_RxHalfCpltCallback is to be implemented in the user file | |
*/ | |
} | |
/** | |
* @brief SWPMI error callback. | |
* @param hswpmi: SWPMI handle | |
* @retval None | |
*/ | |
__weak void HAL_SWPMI_ErrorCallback(SWPMI_HandleTypeDef *hswpmi) | |
{ | |
/* Prevent unused argument(s) compilation warning */ | |
UNUSED(hswpmi); | |
/* NOTE : This function should not be modified, when the callback is needed, | |
the HAL_SWPMI_ErrorCallback is to be implemented in the user file | |
*/ | |
} | |
/** | |
* @} | |
*/ | |
/** @defgroup SWPMI_Exported_Group4 Peripheral Control methods | |
* @brief SWPMI control functions | |
* | |
@verbatim | |
=============================================================================== | |
##### Peripheral Control methods ##### | |
=============================================================================== | |
[..] | |
This subsection provides a set of functions allowing to control the SWPMI. | |
(+) HAL_SWPMI_GetState() API is helpful to check in run-time the state of the SWPMI peripheral | |
(+) HAL_SWPMI_GetError() API is helpful to check in run-time the error state of the SWPMI peripheral | |
@endverbatim | |
* @{ | |
*/ | |
/** | |
* @brief Return the SWPMI handle state. | |
* @param hswpmi: SWPMI handle | |
* @retval HAL state | |
*/ | |
HAL_SWPMI_StateTypeDef HAL_SWPMI_GetState(SWPMI_HandleTypeDef *hswpmi) | |
{ | |
/* Return SWPMI handle state */ | |
return hswpmi->State; | |
} | |
/** | |
* @brief Return the SWPMI error code. | |
* @param hswpmi : pointer to a SWPMI_HandleTypeDef structure that contains | |
* the configuration information for the specified SWPMI. | |
* @retval SWPMI Error Code | |
*/ | |
uint32_t HAL_SWPMI_GetError(SWPMI_HandleTypeDef *hswpmi) | |
{ | |
return hswpmi->ErrorCode; | |
} | |
/** | |
* @} | |
*/ | |
/** | |
* @} | |
*/ | |
/* Private functions ---------------------------------------------------------*/ | |
/** @defgroup SWPMI_Private_Functions SWPMI Private Functions | |
* @{ | |
*/ | |
/** | |
* @brief Transmit an amount of data in interrupt mode. | |
* @note Function called under interruption only, once interruptions have been enabled by HAL_SWPMI_Transmit_IT() | |
* @param hswpmi: SWPMI handle | |
* @retval HAL status | |
*/ | |
static HAL_StatusTypeDef SWPMI_Transmit_IT(SWPMI_HandleTypeDef *hswpmi) | |
{ | |
HAL_StatusTypeDef status = HAL_OK; | |
if ((hswpmi->State == HAL_SWPMI_STATE_BUSY_TX) || (hswpmi->State == HAL_SWPMI_STATE_BUSY_TX_RX)) | |
{ | |
if(hswpmi->TxXferCount == 0) | |
{ | |
/* Disable the SWPMI TXE and Underrun Interrupts */ | |
CLEAR_BIT(hswpmi->Instance->IER, (SWPMI_IT_TIE | SWPMI_IT_TXUNRIE)); | |
} | |
else | |
{ | |
hswpmi->Instance->TDR = (uint32_t)(*hswpmi->pTxBuffPtr++); | |
hswpmi->TxXferCount--; | |
} | |
} | |
else | |
{ | |
status = HAL_BUSY; | |
} | |
return status; | |
} | |
/** | |
* @brief Wraps up transmission in non-blocking mode. | |
* @param hswpmi: SWPMI handle | |
* @retval HAL status | |
* @retval HAL status | |
*/ | |
static HAL_StatusTypeDef SWPMI_EndTransmit_IT(SWPMI_HandleTypeDef *hswpmi) | |
{ | |
/* Clear the SWPMI Transmit buffer empty Flag */ | |
WRITE_REG(hswpmi->Instance->ICR, SWPMI_FLAG_TXBEF); | |
/* Disable the all SWPMI Transmit Interrupts */ | |
CLEAR_BIT(hswpmi->Instance->IER, SWPMI_IT_TIE | SWPMI_IT_TXUNRIE | SWPMI_IT_TXBEIE); | |
/* Check if a receive Process is ongoing or not */ | |
if(hswpmi->State == HAL_SWPMI_STATE_BUSY_TX_RX) | |
{ | |
hswpmi->State = HAL_SWPMI_STATE_BUSY_RX; | |
} | |
else | |
{ | |
hswpmi->State = HAL_SWPMI_STATE_READY; | |
} | |
HAL_SWPMI_TxCpltCallback(hswpmi); | |
return HAL_OK; | |
} | |
/** | |
* @brief Receive an amount of data in interrupt mode. | |
* @note Function called under interruption only, once interruptions have been enabled by HAL_SWPMI_Receive_IT() | |
* @param hswpmi: SWPMI handle | |
* @retval HAL status | |
*/ | |
static HAL_StatusTypeDef SWPMI_Receive_IT(SWPMI_HandleTypeDef *hswpmi) | |
{ | |
HAL_StatusTypeDef status = HAL_OK; | |
if((hswpmi->State == HAL_SWPMI_STATE_BUSY_RX) || (hswpmi->State == HAL_SWPMI_STATE_BUSY_TX_RX)) | |
{ | |
*hswpmi->pRxBuffPtr++ = (uint32_t)(hswpmi->Instance->RDR); | |
if(--hswpmi->RxXferCount == 0) | |
{ | |
/* Wait for RXBFF flag to update state */ | |
HAL_SWPMI_RxCpltCallback(hswpmi); | |
} | |
} | |
else | |
{ | |
status = HAL_BUSY; | |
} | |
return status; | |
} | |
/** | |
* @brief Wraps up reception in non-blocking mode. | |
* @param hswpmi: SWPMI handle | |
* @retval HAL status | |
* @retval HAL status | |
*/ | |
static HAL_StatusTypeDef SWPMI_EndReceive_IT(SWPMI_HandleTypeDef *hswpmi) | |
{ | |
/* Clear the SWPMI Receive buffer full Flag */ | |
WRITE_REG(hswpmi->Instance->ICR, SWPMI_FLAG_RXBFF); | |
/* Disable the all SWPMI Receive Interrupts */ | |
CLEAR_BIT(hswpmi->Instance->IER, SWPMI_IT_RIE | SWPMI_IT_RXBERIE | SWPMI_IT_RXOVRIE | SWPMI_IT_RXBFIE); | |
/* Check if a transmit Process is ongoing or not */ | |
if(hswpmi->State == HAL_SWPMI_STATE_BUSY_TX_RX) | |
{ | |
hswpmi->State = HAL_SWPMI_STATE_BUSY_TX; | |
} | |
else | |
{ | |
hswpmi->State = HAL_SWPMI_STATE_READY; | |
} | |
return HAL_OK; | |
} | |
/** | |
* @brief Wraps up transmission and reception in non-blocking mode. | |
* @param hswpmi: SWPMI handle | |
* @retval HAL status | |
* @retval HAL status | |
*/ | |
static HAL_StatusTypeDef SWPMI_EndTransmitReceive_IT(SWPMI_HandleTypeDef *hswpmi) | |
{ | |
/* Clear the SWPMI Transmission Complete Flag */ | |
WRITE_REG(hswpmi->Instance->ICR, SWPMI_FLAG_TCF); | |
/* Disable the SWPMI Transmission Complete Interrupt */ | |
CLEAR_BIT(hswpmi->Instance->IER, SWPMI_IT_TCIE); | |
/* Check if a receive Process is ongoing or not */ | |
if(hswpmi->State == HAL_SWPMI_STATE_BUSY_TX_RX) | |
{ | |
hswpmi->State = HAL_SWPMI_STATE_BUSY_RX; | |
} | |
else if(hswpmi->State == HAL_SWPMI_STATE_BUSY_TX) | |
{ | |
hswpmi->State = HAL_SWPMI_STATE_READY; | |
} | |
return HAL_OK; | |
} | |
/** | |
* @brief DMA SWPMI transmit process complete callback. | |
* @param hdma: DMA handle | |
* @retval None | |
*/ | |
static void SWPMI_DMATransmitCplt(DMA_HandleTypeDef *hdma) | |
{ | |
SWPMI_HandleTypeDef* hswpmi = ( SWPMI_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent; | |
uint32_t tickstart = 0; | |
/* DMA Normal mode*/ | |
if((hdma->Instance->CCR & DMA_CCR_CIRC) != SET) | |
{ | |
hswpmi->TxXferCount = 0; | |
/* Disable the DMA transfer for transmit request by setting the TXDMA bit | |
in the SWPMI CR register */ | |
CLEAR_BIT(hswpmi->Instance->CR, SWPMI_CR_TXDMA); | |
/* Init tickstart for timeout managment*/ | |
tickstart = HAL_GetTick(); | |
/* Wait the TXBEF */ | |
if(SWPMI_WaitOnFlagSetUntilTimeout(hswpmi, SWPMI_FLAG_TXBEF, tickstart, SWPMI_TIMEOUT_VALUE) != HAL_OK) | |
{ | |
/* Timeout occurred */ | |
HAL_SWPMI_ErrorCallback(hswpmi); | |
} | |
else | |
{ | |
/* No Timeout */ | |
/* Check if a receive process is ongoing or not */ | |
if(hswpmi->State == HAL_SWPMI_STATE_BUSY_TX_RX) | |
{ | |
hswpmi->State = HAL_SWPMI_STATE_BUSY_RX; | |
} | |
else | |
{ | |
hswpmi->State = HAL_SWPMI_STATE_READY; | |
} | |
HAL_SWPMI_TxCpltCallback(hswpmi); | |
} | |
} | |
/* DMA Circular mode */ | |
else | |
{ | |
HAL_SWPMI_TxCpltCallback(hswpmi); | |
} | |
} | |
/** | |
* @brief DMA SWPMI transmit process half complete callback. | |
* @param hdma : DMA handle | |
* @retval None | |
*/ | |
static void SWPMI_DMATxHalfCplt(DMA_HandleTypeDef *hdma) | |
{ | |
SWPMI_HandleTypeDef* hswpmi = (SWPMI_HandleTypeDef*)((DMA_HandleTypeDef*)hdma)->Parent; | |
HAL_SWPMI_TxHalfCpltCallback(hswpmi); | |
} | |
/** | |
* @brief DMA SWPMI receive process complete callback. | |
* @param hdma: DMA handle | |
* @retval None | |
*/ | |
static void SWPMI_DMAReceiveCplt(DMA_HandleTypeDef *hdma) | |
{ | |
SWPMI_HandleTypeDef* hswpmi = ( SWPMI_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent; | |
/* DMA Normal mode*/ | |
if((hdma->Instance->CCR & DMA_CCR_CIRC) == RESET) | |
{ | |
hswpmi->RxXferCount = 0; | |
/* Disable the DMA transfer for the receiver request by setting the RXDMA bit | |
in the SWPMI CR register */ | |
CLEAR_BIT(hswpmi->Instance->CR, SWPMI_CR_RXDMA); | |
/* Check if a transmit Process is ongoing or not */ | |
if(hswpmi->State == HAL_SWPMI_STATE_BUSY_TX_RX) | |
{ | |
hswpmi->State = HAL_SWPMI_STATE_BUSY_TX; | |
} | |
else | |
{ | |
hswpmi->State = HAL_SWPMI_STATE_READY; | |
} | |
} | |
HAL_SWPMI_RxCpltCallback(hswpmi); | |
} | |
/** | |
* @brief DMA SWPMI receive process half complete callback. | |
* @param hdma : DMA handle | |
* @retval None | |
*/ | |
static void SWPMI_DMARxHalfCplt(DMA_HandleTypeDef *hdma) | |
{ | |
SWPMI_HandleTypeDef* hswpmi = (SWPMI_HandleTypeDef*)((DMA_HandleTypeDef*)hdma)->Parent; | |
HAL_SWPMI_RxHalfCpltCallback(hswpmi); | |
} | |
/** | |
* @brief DMA SWPMI communication error callback. | |
* @param hdma: DMA handle | |
* @retval None | |
*/ | |
static void SWPMI_DMAError(DMA_HandleTypeDef *hdma) | |
{ | |
SWPMI_HandleTypeDef* hswpmi = ( SWPMI_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent; | |
/* Update handle */ | |
hswpmi->RxXferCount = 0; | |
hswpmi->TxXferCount = 0; | |
hswpmi->State= HAL_SWPMI_STATE_READY; | |
hswpmi->ErrorCode |= HAL_SWPMI_ERROR_DMA; | |
HAL_SWPMI_ErrorCallback(hswpmi); | |
} | |
/** | |
* @brief DMA SWPMI communication abort callback. | |
* @param hdma: DMA handle | |
* @retval None | |
*/ | |
static void SWPMI_DMAAbortOnError(DMA_HandleTypeDef *hdma) | |
{ | |
SWPMI_HandleTypeDef* hswpmi = ( SWPMI_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent; | |
/* Update handle */ | |
hswpmi->RxXferCount = 0; | |
hswpmi->TxXferCount = 0; | |
hswpmi->State= HAL_SWPMI_STATE_READY; | |
HAL_SWPMI_ErrorCallback(hswpmi); | |
} | |
/** | |
* @brief Handle SWPMI Communication Timeout. | |
* @param hswpmi: SWPMI handle | |
* @param Flag: specifies the SWPMI flag to check. | |
* @param Tickstart Tick start value | |
* @param Timeout timeout duration. | |
* @retval HAL status | |
*/ | |
static HAL_StatusTypeDef SWPMI_WaitOnFlagSetUntilTimeout(SWPMI_HandleTypeDef *hswpmi, uint32_t Flag, uint32_t Tickstart, uint32_t Timeout) | |
{ | |
HAL_StatusTypeDef status = HAL_OK; | |
/* Wait until flag is set */ | |
while(!(HAL_IS_BIT_SET(hswpmi->Instance->ISR, Flag))) | |
{ | |
/* Check for the Timeout */ | |
if(Timeout != HAL_MAX_DELAY) | |
{ | |
if((Timeout == 0) || ((HAL_GetTick()-Tickstart) > Timeout)) | |
{ | |
hswpmi->State = HAL_SWPMI_STATE_READY; | |
status = HAL_TIMEOUT; | |
break; | |
} | |
} | |
} | |
return status; | |
} | |
/** | |
* @} | |
*/ | |
#endif /* HAL_SWPMI_MODULE_ENABLED */ | |
/** | |
* @} | |
*/ | |
/** | |
* @} | |
*/ | |
#endif /* STM32L431xx || STM32L432xx || STM32L433xx || STM32L442xx || STM32L443xx || */ | |
/* STM32L471xx || STM32L475xx || STM32L476xx || STM32L485xx || STM32L486xx */ | |
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |