| /** |
| ****************************************************************************** |
| * @file stm32g4xx_hal_i2c.c |
| * @author MCD Application Team |
| * @brief I2C HAL module driver. |
| * This file provides firmware functions to manage the following |
| * functionalities of the Inter Integrated Circuit (I2C) peripheral: |
| * + Initialization and de-initialization functions |
| * + IO operation functions |
| * + Peripheral State and Errors functions |
| * |
| @verbatim |
| ============================================================================== |
| ##### How to use this driver ##### |
| ============================================================================== |
| [..] |
| The I2C HAL driver can be used as follows: |
| |
| (#) Declare a I2C_HandleTypeDef handle structure, for example: |
| I2C_HandleTypeDef hi2c; |
| |
| (#)Initialize the I2C low level resources by implementing the @ref HAL_I2C_MspInit() API: |
| (##) Enable the I2Cx interface clock |
| (##) I2C pins configuration |
| (+++) Enable the clock for the I2C GPIOs |
| (+++) Configure I2C pins as alternate function open-drain |
| (##) NVIC configuration if you need to use interrupt process |
| (+++) Configure the I2Cx interrupt priority |
| (+++) Enable the NVIC I2C IRQ Channel |
| (##) DMA Configuration if you need to use DMA process |
| (+++) Declare a DMA_HandleTypeDef handle structure for the transmit or receive channel |
| (+++) Enable the DMAx interface clock using |
| (+++) Configure the DMA handle parameters |
| (+++) Configure the DMA Tx or Rx channel |
| (+++) Associate the initialized DMA handle to the hi2c DMA Tx or Rx handle |
| (+++) Configure the priority and enable the NVIC for the transfer complete interrupt on |
| the DMA Tx or Rx channel |
| |
| (#) Configure the Communication Clock Timing, Own Address1, Master Addressing mode, Dual Addressing mode, |
| Own Address2, Own Address2 Mask, General call and Nostretch mode in the hi2c Init structure. |
| |
| (#) Initialize the I2C registers by calling the @ref HAL_I2C_Init(), configures also the low level Hardware |
| (GPIO, CLOCK, NVIC...etc) by calling the customized @ref HAL_I2C_MspInit(&hi2c) API. |
| |
| (#) To check if target device is ready for communication, use the function @ref HAL_I2C_IsDeviceReady() |
| |
| (#) For I2C IO and IO MEM operations, three operation modes are available within this driver : |
| |
| *** Polling mode IO operation *** |
| ================================= |
| [..] |
| (+) Transmit in master mode an amount of data in blocking mode using @ref HAL_I2C_Master_Transmit() |
| (+) Receive in master mode an amount of data in blocking mode using @ref HAL_I2C_Master_Receive() |
| (+) Transmit in slave mode an amount of data in blocking mode using @ref HAL_I2C_Slave_Transmit() |
| (+) Receive in slave mode an amount of data in blocking mode using @ref HAL_I2C_Slave_Receive() |
| |
| *** Polling mode IO MEM operation *** |
| ===================================== |
| [..] |
| (+) Write an amount of data in blocking mode to a specific memory address using @ref HAL_I2C_Mem_Write() |
| (+) Read an amount of data in blocking mode from a specific memory address using @ref HAL_I2C_Mem_Read() |
| |
| |
| *** Interrupt mode IO operation *** |
| =================================== |
| [..] |
| (+) Transmit in master mode an amount of data in non-blocking mode using @ref HAL_I2C_Master_Transmit_IT() |
| (+) At transmission end of transfer, @ref HAL_I2C_MasterTxCpltCallback() is executed and user can |
| add his own code by customization of function pointer @ref HAL_I2C_MasterTxCpltCallback() |
| (+) Receive in master mode an amount of data in non-blocking mode using @ref HAL_I2C_Master_Receive_IT() |
| (+) At reception end of transfer, @ref HAL_I2C_MasterRxCpltCallback() is executed and user can |
| add his own code by customization of function pointer @ref HAL_I2C_MasterRxCpltCallback() |
| (+) Transmit in slave mode an amount of data in non-blocking mode using @ref HAL_I2C_Slave_Transmit_IT() |
| (+) At transmission end of transfer, @ref HAL_I2C_SlaveTxCpltCallback() is executed and user can |
| add his own code by customization of function pointer @ref HAL_I2C_SlaveTxCpltCallback() |
| (+) Receive in slave mode an amount of data in non-blocking mode using @ref HAL_I2C_Slave_Receive_IT() |
| (+) At reception end of transfer, @ref HAL_I2C_SlaveRxCpltCallback() is executed and user can |
| add his own code by customization of function pointer @ref HAL_I2C_SlaveRxCpltCallback() |
| (+) In case of transfer Error, @ref HAL_I2C_ErrorCallback() function is executed and user can |
| add his own code by customization of function pointer @ref HAL_I2C_ErrorCallback() |
| (+) Abort a master I2C process communication with Interrupt using @ref HAL_I2C_Master_Abort_IT() |
| (+) End of abort process, @ref HAL_I2C_AbortCpltCallback() is executed and user can |
| add his own code by customization of function pointer @ref HAL_I2C_AbortCpltCallback() |
| (+) Discard a slave I2C process communication using @ref __HAL_I2C_GENERATE_NACK() macro. |
| This action will inform Master to generate a Stop condition to discard the communication. |
| |
| |
| *** Interrupt mode or DMA mode IO sequential operation *** |
| ========================================================== |
| [..] |
| (@) These interfaces allow to manage a sequential transfer with a repeated start condition |
| when a direction change during transfer |
| [..] |
| (+) A specific option field manage the different steps of a sequential transfer |
| (+) Option field values are defined through @ref I2C_XFEROPTIONS and are listed below: |
| (++) I2C_FIRST_AND_LAST_FRAME: No sequential usage, functionnal is same as associated interfaces in no sequential mode |
| (++) I2C_FIRST_FRAME: Sequential usage, this option allow to manage a sequence with start condition, address |
| and data to transfer without a final stop condition |
| (++) I2C_FIRST_AND_NEXT_FRAME: Sequential usage (Master only), this option allow to manage a sequence with start condition, address |
| and data to transfer without a final stop condition, an then permit a call the same master sequential interface |
| several times (like @ref HAL_I2C_Master_Seq_Transmit_IT() then @ref HAL_I2C_Master_Seq_Transmit_IT() |
| or @ref HAL_I2C_Master_Seq_Transmit_DMA() then @ref HAL_I2C_Master_Seq_Transmit_DMA()) |
| (++) I2C_NEXT_FRAME: Sequential usage, this option allow to manage a sequence with a restart condition, address |
| and with new data to transfer if the direction change or manage only the new data to transfer |
| if no direction change and without a final stop condition in both cases |
| (++) I2C_LAST_FRAME: Sequential usage, this option allow to manage a sequance with a restart condition, address |
| and with new data to transfer if the direction change or manage only the new data to transfer |
| if no direction change and with a final stop condition in both cases |
| (++) I2C_LAST_FRAME_NO_STOP: Sequential usage (Master only), this option allow to manage a restart condition after several call of the same master sequential |
| interface several times (link with option I2C_FIRST_AND_NEXT_FRAME). |
| Usage can, transfer several bytes one by one using HAL_I2C_Master_Seq_Transmit_IT(option I2C_FIRST_AND_NEXT_FRAME then I2C_NEXT_FRAME) |
| or HAL_I2C_Master_Seq_Receive_IT(option I2C_FIRST_AND_NEXT_FRAME then I2C_NEXT_FRAME) |
| or HAL_I2C_Master_Seq_Transmit_DMA(option I2C_FIRST_AND_NEXT_FRAME then I2C_NEXT_FRAME) |
| or HAL_I2C_Master_Seq_Receive_DMA(option I2C_FIRST_AND_NEXT_FRAME then I2C_NEXT_FRAME). |
| Then usage of this option I2C_LAST_FRAME_NO_STOP at the last Transmit or Receive sequence permit to call the oposite interface Receive or Transmit |
| without stopping the communication and so generate a restart condition. |
| (++) I2C_OTHER_FRAME: Sequential usage (Master only), this option allow to manage a restart condition after each call of the same master sequential |
| interface. |
| Usage can, transfer several bytes one by one with a restart with slave address between each bytes using HAL_I2C_Master_Seq_Transmit_IT(option I2C_FIRST_FRAME then I2C_OTHER_FRAME) |
| or HAL_I2C_Master_Seq_Receive_IT(option I2C_FIRST_FRAME then I2C_OTHER_FRAME) |
| or HAL_I2C_Master_Seq_Transmit_DMA(option I2C_FIRST_FRAME then I2C_OTHER_FRAME) |
| or HAL_I2C_Master_Seq_Receive_DMA(option I2C_FIRST_FRAME then I2C_OTHER_FRAME). |
| Then usage of this option I2C_OTHER_AND_LAST_FRAME at the last frame to help automatic generation of STOP condition. |
| |
| (+) Differents sequential I2C interfaces are listed below: |
| (++) Sequential transmit in master I2C mode an amount of data in non-blocking mode using @ref HAL_I2C_Master_Seq_Transmit_IT() |
| or using @ref HAL_I2C_Master_Seq_Transmit_DMA() |
| (+++) At transmission end of current frame transfer, @ref HAL_I2C_MasterTxCpltCallback() is executed and user can |
| add his own code by customization of function pointer @ref HAL_I2C_MasterTxCpltCallback() |
| (++) Sequential receive in master I2C mode an amount of data in non-blocking mode using @ref HAL_I2C_Master_Seq_Receive_IT() |
| or using @ref HAL_I2C_Master_Seq_Receive_DMA() |
| (+++) At reception end of current frame transfer, @ref HAL_I2C_MasterRxCpltCallback() is executed and user can |
| add his own code by customization of function pointer @ref HAL_I2C_MasterRxCpltCallback() |
| (++) Abort a master IT or DMA I2C process communication with Interrupt using @ref HAL_I2C_Master_Abort_IT() |
| (+++) End of abort process, @ref HAL_I2C_AbortCpltCallback() is executed and user can |
| add his own code by customization of function pointer @ref HAL_I2C_AbortCpltCallback() |
| (++) Enable/disable the Address listen mode in slave I2C mode using @ref HAL_I2C_EnableListen_IT() @ref HAL_I2C_DisableListen_IT() |
| (+++) When address slave I2C match, @ref HAL_I2C_AddrCallback() is executed and user can |
| add his own code to check the Address Match Code and the transmission direction request by master (Write/Read). |
| (+++) At Listen mode end @ref HAL_I2C_ListenCpltCallback() is executed and user can |
| add his own code by customization of function pointer @ref HAL_I2C_ListenCpltCallback() |
| (++) Sequential transmit in slave I2C mode an amount of data in non-blocking mode using @ref HAL_I2C_Slave_Seq_Transmit_IT() |
| or using @ref HAL_I2C_Slave_Seq_Transmit_DMA() |
| (+++) At transmission end of current frame transfer, @ref HAL_I2C_SlaveTxCpltCallback() is executed and user can |
| add his own code by customization of function pointer @ref HAL_I2C_SlaveTxCpltCallback() |
| (++) Sequential receive in slave I2C mode an amount of data in non-blocking mode using @ref HAL_I2C_Slave_Seq_Receive_IT() |
| or using @ref HAL_I2C_Slave_Seq_Receive_DMA() |
| (+++) At reception end of current frame transfer, @ref HAL_I2C_SlaveRxCpltCallback() is executed and user can |
| add his own code by customization of function pointer @ref HAL_I2C_SlaveRxCpltCallback() |
| (++) In case of transfer Error, @ref HAL_I2C_ErrorCallback() function is executed and user can |
| add his own code by customization of function pointer @ref HAL_I2C_ErrorCallback() |
| (++) Discard a slave I2C process communication using @ref __HAL_I2C_GENERATE_NACK() macro. |
| This action will inform Master to generate a Stop condition to discard the communication. |
| |
| *** Interrupt mode IO MEM operation *** |
| ======================================= |
| [..] |
| (+) Write an amount of data in non-blocking mode with Interrupt to a specific memory address using |
| @ref HAL_I2C_Mem_Write_IT() |
| (+) At Memory end of write transfer, @ref HAL_I2C_MemTxCpltCallback() is executed and user can |
| add his own code by customization of function pointer @ref HAL_I2C_MemTxCpltCallback() |
| (+) Read an amount of data in non-blocking mode with Interrupt from a specific memory address using |
| @ref HAL_I2C_Mem_Read_IT() |
| (+) At Memory end of read transfer, @ref HAL_I2C_MemRxCpltCallback() is executed and user can |
| add his own code by customization of function pointer @ref HAL_I2C_MemRxCpltCallback() |
| (+) In case of transfer Error, @ref HAL_I2C_ErrorCallback() function is executed and user can |
| add his own code by customization of function pointer @ref HAL_I2C_ErrorCallback() |
| |
| *** DMA mode IO operation *** |
| ============================== |
| [..] |
| (+) Transmit in master mode an amount of data in non-blocking mode (DMA) using |
| @ref HAL_I2C_Master_Transmit_DMA() |
| (+) At transmission end of transfer, @ref HAL_I2C_MasterTxCpltCallback() is executed and user can |
| add his own code by customization of function pointer @ref HAL_I2C_MasterTxCpltCallback() |
| (+) Receive in master mode an amount of data in non-blocking mode (DMA) using |
| @ref HAL_I2C_Master_Receive_DMA() |
| (+) At reception end of transfer, @ref HAL_I2C_MasterRxCpltCallback() is executed and user can |
| add his own code by customization of function pointer @ref HAL_I2C_MasterRxCpltCallback() |
| (+) Transmit in slave mode an amount of data in non-blocking mode (DMA) using |
| @ref HAL_I2C_Slave_Transmit_DMA() |
| (+) At transmission end of transfer, @ref HAL_I2C_SlaveTxCpltCallback() is executed and user can |
| add his own code by customization of function pointer @ref HAL_I2C_SlaveTxCpltCallback() |
| (+) Receive in slave mode an amount of data in non-blocking mode (DMA) using |
| @ref HAL_I2C_Slave_Receive_DMA() |
| (+) At reception end of transfer, @ref HAL_I2C_SlaveRxCpltCallback() is executed and user can |
| add his own code by customization of function pointer @ref HAL_I2C_SlaveRxCpltCallback() |
| (+) In case of transfer Error, @ref HAL_I2C_ErrorCallback() function is executed and user can |
| add his own code by customization of function pointer @ref HAL_I2C_ErrorCallback() |
| (+) Abort a master I2C process communication with Interrupt using @ref HAL_I2C_Master_Abort_IT() |
| (+) End of abort process, @ref HAL_I2C_AbortCpltCallback() is executed and user can |
| add his own code by customization of function pointer @ref HAL_I2C_AbortCpltCallback() |
| (+) Discard a slave I2C process communication using @ref __HAL_I2C_GENERATE_NACK() macro. |
| This action will inform Master to generate a Stop condition to discard the communication. |
| |
| *** DMA mode IO MEM operation *** |
| ================================= |
| [..] |
| (+) Write an amount of data in non-blocking mode with DMA to a specific memory address using |
| @ref HAL_I2C_Mem_Write_DMA() |
| (+) At Memory end of write transfer, @ref HAL_I2C_MemTxCpltCallback() is executed and user can |
| add his own code by customization of function pointer @ref HAL_I2C_MemTxCpltCallback() |
| (+) Read an amount of data in non-blocking mode with DMA from a specific memory address using |
| @ref HAL_I2C_Mem_Read_DMA() |
| (+) At Memory end of read transfer, @ref HAL_I2C_MemRxCpltCallback() is executed and user can |
| add his own code by customization of function pointer @ref HAL_I2C_MemRxCpltCallback() |
| (+) In case of transfer Error, @ref HAL_I2C_ErrorCallback() function is executed and user can |
| add his own code by customization of function pointer @ref HAL_I2C_ErrorCallback() |
| |
| |
| *** I2C HAL driver macros list *** |
| ================================== |
| [..] |
| Below the list of most used macros in I2C HAL driver. |
| |
| (+) @ref __HAL_I2C_ENABLE: Enable the I2C peripheral |
| (+) @ref __HAL_I2C_DISABLE: Disable the I2C peripheral |
| (+) @ref __HAL_I2C_GENERATE_NACK: Generate a Non-Acknowledge I2C peripheral in Slave mode |
| (+) @ref __HAL_I2C_GET_FLAG: Check whether the specified I2C flag is set or not |
| (+) @ref __HAL_I2C_CLEAR_FLAG: Clear the specified I2C pending flag |
| (+) @ref __HAL_I2C_ENABLE_IT: Enable the specified I2C interrupt |
| (+) @ref __HAL_I2C_DISABLE_IT: Disable the specified I2C interrupt |
| |
| *** Callback registration *** |
| ============================================= |
| |
| The compilation flag USE_HAL_I2C_REGISTER_CALLBACKS when set to 1 |
| allows the user to configure dynamically the driver callbacks. |
| Use Functions @ref HAL_I2C_RegisterCallback() or @ref HAL_I2C_RegisterAddrCallback() |
| to register an interrupt callback. |
| |
| Function @ref HAL_I2C_RegisterCallback() allows to register following callbacks: |
| (+) MasterTxCpltCallback : callback for Master transmission end of transfer. |
| (+) MasterRxCpltCallback : callback for Master reception end of transfer. |
| (+) SlaveTxCpltCallback : callback for Slave transmission end of transfer. |
| (+) SlaveRxCpltCallback : callback for Slave reception end of transfer. |
| (+) ListenCpltCallback : callback for end of listen mode. |
| (+) MemTxCpltCallback : callback for Memory transmission end of transfer. |
| (+) MemRxCpltCallback : callback for Memory reception end of transfer. |
| (+) ErrorCallback : callback for error detection. |
| (+) AbortCpltCallback : callback for abort completion process. |
| (+) MspInitCallback : callback for Msp Init. |
| (+) MspDeInitCallback : callback for Msp DeInit. |
| This function takes as parameters the HAL peripheral handle, the Callback ID |
| and a pointer to the user callback function. |
| |
| For specific callback AddrCallback use dedicated register callbacks : @ref HAL_I2C_RegisterAddrCallback(). |
| |
| Use function @ref HAL_I2C_UnRegisterCallback to reset a callback to the default |
| weak function. |
| @ref HAL_I2C_UnRegisterCallback takes as parameters the HAL peripheral handle, |
| and the Callback ID. |
| This function allows to reset following callbacks: |
| (+) MasterTxCpltCallback : callback for Master transmission end of transfer. |
| (+) MasterRxCpltCallback : callback for Master reception end of transfer. |
| (+) SlaveTxCpltCallback : callback for Slave transmission end of transfer. |
| (+) SlaveRxCpltCallback : callback for Slave reception end of transfer. |
| (+) ListenCpltCallback : callback for end of listen mode. |
| (+) MemTxCpltCallback : callback for Memory transmission end of transfer. |
| (+) MemRxCpltCallback : callback for Memory reception end of transfer. |
| (+) ErrorCallback : callback for error detection. |
| (+) AbortCpltCallback : callback for abort completion process. |
| (+) MspInitCallback : callback for Msp Init. |
| (+) MspDeInitCallback : callback for Msp DeInit. |
| |
| For callback AddrCallback use dedicated register callbacks : @ref HAL_I2C_UnRegisterAddrCallback(). |
| |
| By default, after the @ref HAL_I2C_Init() and when the state is @ref HAL_I2C_STATE_RESET |
| all callbacks are set to the corresponding weak functions: |
| examples @ref HAL_I2C_MasterTxCpltCallback(), @ref HAL_I2C_MasterRxCpltCallback(). |
| Exception done for MspInit and MspDeInit functions that are |
| reset to the legacy weak functions in the @ref HAL_I2C_Init()/ @ref HAL_I2C_DeInit() only when |
| these callbacks are null (not registered beforehand). |
| If MspInit or MspDeInit are not null, the @ref HAL_I2C_Init()/ @ref HAL_I2C_DeInit() |
| keep and use the user MspInit/MspDeInit callbacks (registered beforehand) whatever the state. |
| |
| Callbacks can be registered/unregistered in @ref HAL_I2C_STATE_READY state only. |
| Exception done MspInit/MspDeInit functions that can be registered/unregistered |
| in @ref HAL_I2C_STATE_READY or @ref HAL_I2C_STATE_RESET state, |
| thus registered (user) MspInit/DeInit callbacks can be used during the Init/DeInit. |
| Then, the user first registers the MspInit/MspDeInit user callbacks |
| using @ref HAL_I2C_RegisterCallback() before calling @ref HAL_I2C_DeInit() |
| or @ref HAL_I2C_Init() function. |
| |
| When the compilation flag USE_HAL_I2C_REGISTER_CALLBACKS is set to 0 or |
| not defined, the callback registration feature is not available and all callbacks |
| are set to the corresponding weak functions. |
| |
| [..] |
| (@) You can refer to the I2C HAL driver header file for more useful macros |
| |
| @endverbatim |
| ****************************************************************************** |
| * @attention |
| * |
| * <h2><center>© Copyright (c) 2019 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 "stm32g4xx_hal.h" |
| |
| /** @addtogroup STM32G4xx_HAL_Driver |
| * @{ |
| */ |
| |
| /** @defgroup I2C I2C |
| * @brief I2C HAL module driver |
| * @{ |
| */ |
| |
| #ifdef HAL_I2C_MODULE_ENABLED |
| |
| /* Private typedef -----------------------------------------------------------*/ |
| /* Private define ------------------------------------------------------------*/ |
| |
| /** @defgroup I2C_Private_Define I2C Private Define |
| * @{ |
| */ |
| #define TIMING_CLEAR_MASK (0xF0FFFFFFU) /*!< I2C TIMING clear register Mask */ |
| #define I2C_TIMEOUT_ADDR (10000U) /*!< 10 s */ |
| #define I2C_TIMEOUT_BUSY (25U) /*!< 25 ms */ |
| #define I2C_TIMEOUT_DIR (25U) /*!< 25 ms */ |
| #define I2C_TIMEOUT_RXNE (25U) /*!< 25 ms */ |
| #define I2C_TIMEOUT_STOPF (25U) /*!< 25 ms */ |
| #define I2C_TIMEOUT_TC (25U) /*!< 25 ms */ |
| #define I2C_TIMEOUT_TCR (25U) /*!< 25 ms */ |
| #define I2C_TIMEOUT_TXIS (25U) /*!< 25 ms */ |
| #define I2C_TIMEOUT_FLAG (25U) /*!< 25 ms */ |
| |
| #define MAX_NBYTE_SIZE 255U |
| #define SlaveAddr_SHIFT 7U |
| #define SlaveAddr_MSK 0x06U |
| |
| /* Private define for @ref PreviousState usage */ |
| #define I2C_STATE_MSK ((uint32_t)((uint32_t)((uint32_t)HAL_I2C_STATE_BUSY_TX | (uint32_t)HAL_I2C_STATE_BUSY_RX) & (uint32_t)(~((uint32_t)HAL_I2C_STATE_READY)))) /*!< Mask State define, keep only RX and TX bits */ |
| #define I2C_STATE_NONE ((uint32_t)(HAL_I2C_MODE_NONE)) /*!< Default Value */ |
| #define I2C_STATE_MASTER_BUSY_TX ((uint32_t)(((uint32_t)HAL_I2C_STATE_BUSY_TX & I2C_STATE_MSK) | (uint32_t)HAL_I2C_MODE_MASTER)) /*!< Master Busy TX, combinaison of State LSB and Mode enum */ |
| #define I2C_STATE_MASTER_BUSY_RX ((uint32_t)(((uint32_t)HAL_I2C_STATE_BUSY_RX & I2C_STATE_MSK) | (uint32_t)HAL_I2C_MODE_MASTER)) /*!< Master Busy RX, combinaison of State LSB and Mode enum */ |
| #define I2C_STATE_SLAVE_BUSY_TX ((uint32_t)(((uint32_t)HAL_I2C_STATE_BUSY_TX & I2C_STATE_MSK) | (uint32_t)HAL_I2C_MODE_SLAVE)) /*!< Slave Busy TX, combinaison of State LSB and Mode enum */ |
| #define I2C_STATE_SLAVE_BUSY_RX ((uint32_t)(((uint32_t)HAL_I2C_STATE_BUSY_RX & I2C_STATE_MSK) | (uint32_t)HAL_I2C_MODE_SLAVE)) /*!< Slave Busy RX, combinaison of State LSB and Mode enum */ |
| #define I2C_STATE_MEM_BUSY_TX ((uint32_t)(((uint32_t)HAL_I2C_STATE_BUSY_TX & I2C_STATE_MSK) | (uint32_t)HAL_I2C_MODE_MEM)) /*!< Memory Busy TX, combinaison of State LSB and Mode enum */ |
| #define I2C_STATE_MEM_BUSY_RX ((uint32_t)(((uint32_t)HAL_I2C_STATE_BUSY_RX & I2C_STATE_MSK) | (uint32_t)HAL_I2C_MODE_MEM)) /*!< Memory Busy RX, combinaison of State LSB and Mode enum */ |
| |
| |
| /* Private define to centralize the enable/disable of Interrupts */ |
| #define I2C_XFER_TX_IT (0x00000001U) |
| #define I2C_XFER_RX_IT (0x00000002U) |
| #define I2C_XFER_LISTEN_IT (0x00000004U) |
| |
| #define I2C_XFER_ERROR_IT (0x00000011U) |
| #define I2C_XFER_CPLT_IT (0x00000012U) |
| #define I2C_XFER_RELOAD_IT (0x00000012U) |
| |
| /* Private define Sequential Transfer Options default/reset value */ |
| #define I2C_NO_OPTION_FRAME (0xFFFF0000U) |
| /** |
| * @} |
| */ |
| |
| /* Private macro -------------------------------------------------------------*/ |
| /* Private variables ---------------------------------------------------------*/ |
| /* Private function prototypes -----------------------------------------------*/ |
| |
| /** @defgroup I2C_Private_Functions I2C Private Functions |
| * @{ |
| */ |
| /* Private functions to handle DMA transfer */ |
| static void I2C_DMAMasterTransmitCplt(DMA_HandleTypeDef *hdma); |
| static void I2C_DMAMasterReceiveCplt(DMA_HandleTypeDef *hdma); |
| static void I2C_DMASlaveTransmitCplt(DMA_HandleTypeDef *hdma); |
| static void I2C_DMASlaveReceiveCplt(DMA_HandleTypeDef *hdma); |
| static void I2C_DMAError(DMA_HandleTypeDef *hdma); |
| static void I2C_DMAAbort(DMA_HandleTypeDef *hdma); |
| |
| /* Private functions to handle IT transfer */ |
| static void I2C_ITAddrCplt(I2C_HandleTypeDef *hi2c, uint32_t ITFlags); |
| static void I2C_ITMasterSeqCplt(I2C_HandleTypeDef *hi2c); |
| static void I2C_ITSlaveSeqCplt(I2C_HandleTypeDef *hi2c); |
| static void I2C_ITMasterCplt(I2C_HandleTypeDef *hi2c, uint32_t ITFlags); |
| static void I2C_ITSlaveCplt(I2C_HandleTypeDef *hi2c, uint32_t ITFlags); |
| static void I2C_ITListenCplt(I2C_HandleTypeDef *hi2c, uint32_t ITFlags); |
| static void I2C_ITError(I2C_HandleTypeDef *hi2c, uint32_t ErrorCode); |
| |
| /* Private functions to handle IT transfer */ |
| static HAL_StatusTypeDef I2C_RequestMemoryWrite(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint32_t Timeout, uint32_t Tickstart); |
| static HAL_StatusTypeDef I2C_RequestMemoryRead(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint32_t Timeout, uint32_t Tickstart); |
| |
| /* Private functions for I2C transfer IRQ handler */ |
| static HAL_StatusTypeDef I2C_Master_ISR_IT(struct __I2C_HandleTypeDef *hi2c, uint32_t ITFlags, uint32_t ITSources); |
| static HAL_StatusTypeDef I2C_Slave_ISR_IT(struct __I2C_HandleTypeDef *hi2c, uint32_t ITFlags, uint32_t ITSources); |
| static HAL_StatusTypeDef I2C_Master_ISR_DMA(struct __I2C_HandleTypeDef *hi2c, uint32_t ITFlags, uint32_t ITSources); |
| static HAL_StatusTypeDef I2C_Slave_ISR_DMA(struct __I2C_HandleTypeDef *hi2c, uint32_t ITFlags, uint32_t ITSources); |
| |
| /* Private functions to handle flags during polling transfer */ |
| static HAL_StatusTypeDef I2C_WaitOnFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Flag, FlagStatus Status, uint32_t Timeout, uint32_t Tickstart); |
| static HAL_StatusTypeDef I2C_WaitOnTXISFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Timeout, uint32_t Tickstart); |
| static HAL_StatusTypeDef I2C_WaitOnRXNEFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Timeout, uint32_t Tickstart); |
| static HAL_StatusTypeDef I2C_WaitOnSTOPFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Timeout, uint32_t Tickstart); |
| static HAL_StatusTypeDef I2C_IsAcknowledgeFailed(I2C_HandleTypeDef *hi2c, uint32_t Timeout, uint32_t Tickstart); |
| |
| /* Private functions to centralize the enable/disable of Interrupts */ |
| static void I2C_Enable_IRQ(I2C_HandleTypeDef *hi2c, uint16_t InterruptRequest); |
| static void I2C_Disable_IRQ(I2C_HandleTypeDef *hi2c, uint16_t InterruptRequest); |
| |
| /* Private function to flush TXDR register */ |
| static void I2C_Flush_TXDR(I2C_HandleTypeDef *hi2c); |
| |
| /* Private function to handle start, restart or stop a transfer */ |
| static void I2C_TransferConfig(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t Size, uint32_t Mode, uint32_t Request); |
| |
| /* Private function to Convert Specific options */ |
| static void I2C_ConvertOtherXferOptions(I2C_HandleTypeDef *hi2c); |
| /** |
| * @} |
| */ |
| |
| /* Exported functions --------------------------------------------------------*/ |
| |
| /** @defgroup I2C_Exported_Functions I2C Exported Functions |
| * @{ |
| */ |
| |
| /** @defgroup I2C_Exported_Functions_Group1 Initialization and de-initialization functions |
| * @brief Initialization and Configuration functions |
| * |
| @verbatim |
| =============================================================================== |
| ##### Initialization and de-initialization functions ##### |
| =============================================================================== |
| [..] This subsection provides a set of functions allowing to initialize and |
| deinitialize the I2Cx peripheral: |
| |
| (+) User must Implement HAL_I2C_MspInit() function in which he configures |
| all related peripherals resources (CLOCK, GPIO, DMA, IT and NVIC ). |
| |
| (+) Call the function HAL_I2C_Init() to configure the selected device with |
| the selected configuration: |
| (++) Clock Timing |
| (++) Own Address 1 |
| (++) Addressing mode (Master, Slave) |
| (++) Dual Addressing mode |
| (++) Own Address 2 |
| (++) Own Address 2 Mask |
| (++) General call mode |
| (++) Nostretch mode |
| |
| (+) Call the function HAL_I2C_DeInit() to restore the default configuration |
| of the selected I2Cx peripheral. |
| |
| @endverbatim |
| * @{ |
| */ |
| |
| /** |
| * @brief Initializes the I2C according to the specified parameters |
| * in the I2C_InitTypeDef and initialize the associated handle. |
| * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains |
| * the configuration information for the specified I2C. |
| * @retval HAL status |
| */ |
| HAL_StatusTypeDef HAL_I2C_Init(I2C_HandleTypeDef *hi2c) |
| { |
| /* Check the I2C handle allocation */ |
| if (hi2c == NULL) |
| { |
| return HAL_ERROR; |
| } |
| |
| /* Check the parameters */ |
| assert_param(IS_I2C_ALL_INSTANCE(hi2c->Instance)); |
| assert_param(IS_I2C_OWN_ADDRESS1(hi2c->Init.OwnAddress1)); |
| assert_param(IS_I2C_ADDRESSING_MODE(hi2c->Init.AddressingMode)); |
| assert_param(IS_I2C_DUAL_ADDRESS(hi2c->Init.DualAddressMode)); |
| assert_param(IS_I2C_OWN_ADDRESS2(hi2c->Init.OwnAddress2)); |
| assert_param(IS_I2C_OWN_ADDRESS2_MASK(hi2c->Init.OwnAddress2Masks)); |
| assert_param(IS_I2C_GENERAL_CALL(hi2c->Init.GeneralCallMode)); |
| assert_param(IS_I2C_NO_STRETCH(hi2c->Init.NoStretchMode)); |
| |
| if (hi2c->State == HAL_I2C_STATE_RESET) |
| { |
| /* Allocate lock resource and initialize it */ |
| hi2c->Lock = HAL_UNLOCKED; |
| |
| #if (USE_HAL_I2C_REGISTER_CALLBACKS == 1) |
| /* Init the I2C Callback settings */ |
| hi2c->MasterTxCpltCallback = HAL_I2C_MasterTxCpltCallback; /* Legacy weak MasterTxCpltCallback */ |
| hi2c->MasterRxCpltCallback = HAL_I2C_MasterRxCpltCallback; /* Legacy weak MasterRxCpltCallback */ |
| hi2c->SlaveTxCpltCallback = HAL_I2C_SlaveTxCpltCallback; /* Legacy weak SlaveTxCpltCallback */ |
| hi2c->SlaveRxCpltCallback = HAL_I2C_SlaveRxCpltCallback; /* Legacy weak SlaveRxCpltCallback */ |
| hi2c->ListenCpltCallback = HAL_I2C_ListenCpltCallback; /* Legacy weak ListenCpltCallback */ |
| hi2c->MemTxCpltCallback = HAL_I2C_MemTxCpltCallback; /* Legacy weak MemTxCpltCallback */ |
| hi2c->MemRxCpltCallback = HAL_I2C_MemRxCpltCallback; /* Legacy weak MemRxCpltCallback */ |
| hi2c->ErrorCallback = HAL_I2C_ErrorCallback; /* Legacy weak ErrorCallback */ |
| hi2c->AbortCpltCallback = HAL_I2C_AbortCpltCallback; /* Legacy weak AbortCpltCallback */ |
| hi2c->AddrCallback = HAL_I2C_AddrCallback; /* Legacy weak AddrCallback */ |
| |
| if (hi2c->MspInitCallback == NULL) |
| { |
| hi2c->MspInitCallback = HAL_I2C_MspInit; /* Legacy weak MspInit */ |
| } |
| |
| /* Init the low level hardware : GPIO, CLOCK, CORTEX...etc */ |
| hi2c->MspInitCallback(hi2c); |
| #else |
| /* Init the low level hardware : GPIO, CLOCK, CORTEX...etc */ |
| HAL_I2C_MspInit(hi2c); |
| #endif /* USE_HAL_I2C_REGISTER_CALLBACKS */ |
| } |
| |
| hi2c->State = HAL_I2C_STATE_BUSY; |
| |
| /* Disable the selected I2C peripheral */ |
| __HAL_I2C_DISABLE(hi2c); |
| |
| /*---------------------------- I2Cx TIMINGR Configuration ------------------*/ |
| /* Configure I2Cx: Frequency range */ |
| hi2c->Instance->TIMINGR = hi2c->Init.Timing & TIMING_CLEAR_MASK; |
| |
| /*---------------------------- I2Cx OAR1 Configuration ---------------------*/ |
| /* Disable Own Address1 before set the Own Address1 configuration */ |
| hi2c->Instance->OAR1 &= ~I2C_OAR1_OA1EN; |
| |
| /* Configure I2Cx: Own Address1 and ack own address1 mode */ |
| if (hi2c->Init.AddressingMode == I2C_ADDRESSINGMODE_7BIT) |
| { |
| hi2c->Instance->OAR1 = (I2C_OAR1_OA1EN | hi2c->Init.OwnAddress1); |
| } |
| else /* I2C_ADDRESSINGMODE_10BIT */ |
| { |
| hi2c->Instance->OAR1 = (I2C_OAR1_OA1EN | I2C_OAR1_OA1MODE | hi2c->Init.OwnAddress1); |
| } |
| |
| /*---------------------------- I2Cx CR2 Configuration ----------------------*/ |
| /* Configure I2Cx: Addressing Master mode */ |
| if (hi2c->Init.AddressingMode == I2C_ADDRESSINGMODE_10BIT) |
| { |
| hi2c->Instance->CR2 = (I2C_CR2_ADD10); |
| } |
| /* Enable the AUTOEND by default, and enable NACK (should be disable only during Slave process */ |
| hi2c->Instance->CR2 |= (I2C_CR2_AUTOEND | I2C_CR2_NACK); |
| |
| /*---------------------------- I2Cx OAR2 Configuration ---------------------*/ |
| /* Disable Own Address2 before set the Own Address2 configuration */ |
| hi2c->Instance->OAR2 &= ~I2C_DUALADDRESS_ENABLE; |
| |
| /* Configure I2Cx: Dual mode and Own Address2 */ |
| hi2c->Instance->OAR2 = (hi2c->Init.DualAddressMode | hi2c->Init.OwnAddress2 | (hi2c->Init.OwnAddress2Masks << 8)); |
| |
| /*---------------------------- I2Cx CR1 Configuration ----------------------*/ |
| /* Configure I2Cx: Generalcall and NoStretch mode */ |
| hi2c->Instance->CR1 = (hi2c->Init.GeneralCallMode | hi2c->Init.NoStretchMode); |
| |
| /* Enable the selected I2C peripheral */ |
| __HAL_I2C_ENABLE(hi2c); |
| |
| hi2c->ErrorCode = HAL_I2C_ERROR_NONE; |
| hi2c->State = HAL_I2C_STATE_READY; |
| hi2c->PreviousState = I2C_STATE_NONE; |
| hi2c->Mode = HAL_I2C_MODE_NONE; |
| |
| return HAL_OK; |
| } |
| |
| /** |
| * @brief DeInitialize the I2C peripheral. |
| * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains |
| * the configuration information for the specified I2C. |
| * @retval HAL status |
| */ |
| HAL_StatusTypeDef HAL_I2C_DeInit(I2C_HandleTypeDef *hi2c) |
| { |
| /* Check the I2C handle allocation */ |
| if (hi2c == NULL) |
| { |
| return HAL_ERROR; |
| } |
| |
| /* Check the parameters */ |
| assert_param(IS_I2C_ALL_INSTANCE(hi2c->Instance)); |
| |
| hi2c->State = HAL_I2C_STATE_BUSY; |
| |
| /* Disable the I2C Peripheral Clock */ |
| __HAL_I2C_DISABLE(hi2c); |
| |
| #if (USE_HAL_I2C_REGISTER_CALLBACKS == 1) |
| if (hi2c->MspDeInitCallback == NULL) |
| { |
| hi2c->MspDeInitCallback = HAL_I2C_MspDeInit; /* Legacy weak MspDeInit */ |
| } |
| |
| /* DeInit the low level hardware: GPIO, CLOCK, NVIC */ |
| hi2c->MspDeInitCallback(hi2c); |
| #else |
| /* DeInit the low level hardware: GPIO, CLOCK, NVIC */ |
| HAL_I2C_MspDeInit(hi2c); |
| #endif /* USE_HAL_I2C_REGISTER_CALLBACKS */ |
| |
| hi2c->ErrorCode = HAL_I2C_ERROR_NONE; |
| hi2c->State = HAL_I2C_STATE_RESET; |
| hi2c->PreviousState = I2C_STATE_NONE; |
| hi2c->Mode = HAL_I2C_MODE_NONE; |
| |
| /* Release Lock */ |
| __HAL_UNLOCK(hi2c); |
| |
| return HAL_OK; |
| } |
| |
| /** |
| * @brief Initialize the I2C MSP. |
| * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains |
| * the configuration information for the specified I2C. |
| * @retval None |
| */ |
| __weak void HAL_I2C_MspInit(I2C_HandleTypeDef *hi2c) |
| { |
| /* Prevent unused argument(s) compilation warning */ |
| UNUSED(hi2c); |
| |
| /* NOTE : This function should not be modified, when the callback is needed, |
| the HAL_I2C_MspInit could be implemented in the user file |
| */ |
| } |
| |
| /** |
| * @brief DeInitialize the I2C MSP. |
| * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains |
| * the configuration information for the specified I2C. |
| * @retval None |
| */ |
| __weak void HAL_I2C_MspDeInit(I2C_HandleTypeDef *hi2c) |
| { |
| /* Prevent unused argument(s) compilation warning */ |
| UNUSED(hi2c); |
| |
| /* NOTE : This function should not be modified, when the callback is needed, |
| the HAL_I2C_MspDeInit could be implemented in the user file |
| */ |
| } |
| |
| #if (USE_HAL_I2C_REGISTER_CALLBACKS == 1) |
| /** |
| * @brief Register a User I2C Callback |
| * To be used instead of the weak predefined callback |
| * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains |
| * the configuration information for the specified I2C. |
| * @param CallbackID ID of the callback to be registered |
| * This parameter can be one of the following values: |
| * @arg @ref HAL_I2C_MASTER_TX_COMPLETE_CB_ID Master Tx Transfer completed callback ID |
| * @arg @ref HAL_I2C_MASTER_RX_COMPLETE_CB_ID Master Rx Transfer completed callback ID |
| * @arg @ref HAL_I2C_SLAVE_TX_COMPLETE_CB_ID Slave Tx Transfer completed callback ID |
| * @arg @ref HAL_I2C_SLAVE_RX_COMPLETE_CB_ID Slave Rx Transfer completed callback ID |
| * @arg @ref HAL_I2C_LISTEN_COMPLETE_CB_ID Listen Complete callback ID |
| * @arg @ref HAL_I2C_MEM_TX_COMPLETE_CB_ID Memory Tx Transfer callback ID |
| * @arg @ref HAL_I2C_MEM_RX_COMPLETE_CB_ID Memory Rx Transfer completed callback ID |
| * @arg @ref HAL_I2C_ERROR_CB_ID Error callback ID |
| * @arg @ref HAL_I2C_ABORT_CB_ID Abort callback ID |
| * @arg @ref HAL_I2C_MSPINIT_CB_ID MspInit callback ID |
| * @arg @ref HAL_I2C_MSPDEINIT_CB_ID MspDeInit callback ID |
| * @param pCallback pointer to the Callback function |
| * @retval HAL status |
| */ |
| HAL_StatusTypeDef HAL_I2C_RegisterCallback(I2C_HandleTypeDef *hi2c, HAL_I2C_CallbackIDTypeDef CallbackID, pI2C_CallbackTypeDef pCallback) |
| { |
| HAL_StatusTypeDef status = HAL_OK; |
| |
| if (pCallback == NULL) |
| { |
| /* Update the error code */ |
| hi2c->ErrorCode |= HAL_I2C_ERROR_INVALID_CALLBACK; |
| |
| return HAL_ERROR; |
| } |
| /* Process locked */ |
| __HAL_LOCK(hi2c); |
| |
| if (HAL_I2C_STATE_READY == hi2c->State) |
| { |
| switch (CallbackID) |
| { |
| case HAL_I2C_MASTER_TX_COMPLETE_CB_ID : |
| hi2c->MasterTxCpltCallback = pCallback; |
| break; |
| |
| case HAL_I2C_MASTER_RX_COMPLETE_CB_ID : |
| hi2c->MasterRxCpltCallback = pCallback; |
| break; |
| |
| case HAL_I2C_SLAVE_TX_COMPLETE_CB_ID : |
| hi2c->SlaveTxCpltCallback = pCallback; |
| break; |
| |
| case HAL_I2C_SLAVE_RX_COMPLETE_CB_ID : |
| hi2c->SlaveRxCpltCallback = pCallback; |
| break; |
| |
| case HAL_I2C_LISTEN_COMPLETE_CB_ID : |
| hi2c->ListenCpltCallback = pCallback; |
| break; |
| |
| case HAL_I2C_MEM_TX_COMPLETE_CB_ID : |
| hi2c->MemTxCpltCallback = pCallback; |
| break; |
| |
| case HAL_I2C_MEM_RX_COMPLETE_CB_ID : |
| hi2c->MemRxCpltCallback = pCallback; |
| break; |
| |
| case HAL_I2C_ERROR_CB_ID : |
| hi2c->ErrorCallback = pCallback; |
| break; |
| |
| case HAL_I2C_ABORT_CB_ID : |
| hi2c->AbortCpltCallback = pCallback; |
| break; |
| |
| case HAL_I2C_MSPINIT_CB_ID : |
| hi2c->MspInitCallback = pCallback; |
| break; |
| |
| case HAL_I2C_MSPDEINIT_CB_ID : |
| hi2c->MspDeInitCallback = pCallback; |
| break; |
| |
| default : |
| /* Update the error code */ |
| hi2c->ErrorCode |= HAL_I2C_ERROR_INVALID_CALLBACK; |
| |
| /* Return error status */ |
| status = HAL_ERROR; |
| break; |
| } |
| } |
| else if (HAL_I2C_STATE_RESET == hi2c->State) |
| { |
| switch (CallbackID) |
| { |
| case HAL_I2C_MSPINIT_CB_ID : |
| hi2c->MspInitCallback = pCallback; |
| break; |
| |
| case HAL_I2C_MSPDEINIT_CB_ID : |
| hi2c->MspDeInitCallback = pCallback; |
| break; |
| |
| default : |
| /* Update the error code */ |
| hi2c->ErrorCode |= HAL_I2C_ERROR_INVALID_CALLBACK; |
| |
| /* Return error status */ |
| status = HAL_ERROR; |
| break; |
| } |
| } |
| else |
| { |
| /* Update the error code */ |
| hi2c->ErrorCode |= HAL_I2C_ERROR_INVALID_CALLBACK; |
| |
| /* Return error status */ |
| status = HAL_ERROR; |
| } |
| |
| /* Release Lock */ |
| __HAL_UNLOCK(hi2c); |
| return status; |
| } |
| |
| /** |
| * @brief Unregister an I2C Callback |
| * I2C callback is redirected to the weak predefined callback |
| * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains |
| * the configuration information for the specified I2C. |
| * @param CallbackID ID of the callback to be unregistered |
| * This parameter can be one of the following values: |
| * This parameter can be one of the following values: |
| * @arg @ref HAL_I2C_MASTER_TX_COMPLETE_CB_ID Master Tx Transfer completed callback ID |
| * @arg @ref HAL_I2C_MASTER_RX_COMPLETE_CB_ID Master Rx Transfer completed callback ID |
| * @arg @ref HAL_I2C_SLAVE_TX_COMPLETE_CB_ID Slave Tx Transfer completed callback ID |
| * @arg @ref HAL_I2C_SLAVE_RX_COMPLETE_CB_ID Slave Rx Transfer completed callback ID |
| * @arg @ref HAL_I2C_LISTEN_COMPLETE_CB_ID Listen Complete callback ID |
| * @arg @ref HAL_I2C_MEM_TX_COMPLETE_CB_ID Memory Tx Transfer callback ID |
| * @arg @ref HAL_I2C_MEM_RX_COMPLETE_CB_ID Memory Rx Transfer completed callback ID |
| * @arg @ref HAL_I2C_ERROR_CB_ID Error callback ID |
| * @arg @ref HAL_I2C_ABORT_CB_ID Abort callback ID |
| * @arg @ref HAL_I2C_MSPINIT_CB_ID MspInit callback ID |
| * @arg @ref HAL_I2C_MSPDEINIT_CB_ID MspDeInit callback ID |
| * @retval HAL status |
| */ |
| HAL_StatusTypeDef HAL_I2C_UnRegisterCallback(I2C_HandleTypeDef *hi2c, HAL_I2C_CallbackIDTypeDef CallbackID) |
| { |
| HAL_StatusTypeDef status = HAL_OK; |
| |
| /* Process locked */ |
| __HAL_LOCK(hi2c); |
| |
| if (HAL_I2C_STATE_READY == hi2c->State) |
| { |
| switch (CallbackID) |
| { |
| case HAL_I2C_MASTER_TX_COMPLETE_CB_ID : |
| hi2c->MasterTxCpltCallback = HAL_I2C_MasterTxCpltCallback; /* Legacy weak MasterTxCpltCallback */ |
| break; |
| |
| case HAL_I2C_MASTER_RX_COMPLETE_CB_ID : |
| hi2c->MasterRxCpltCallback = HAL_I2C_MasterRxCpltCallback; /* Legacy weak MasterRxCpltCallback */ |
| break; |
| |
| case HAL_I2C_SLAVE_TX_COMPLETE_CB_ID : |
| hi2c->SlaveTxCpltCallback = HAL_I2C_SlaveTxCpltCallback; /* Legacy weak SlaveTxCpltCallback */ |
| break; |
| |
| case HAL_I2C_SLAVE_RX_COMPLETE_CB_ID : |
| hi2c->SlaveRxCpltCallback = HAL_I2C_SlaveRxCpltCallback; /* Legacy weak SlaveRxCpltCallback */ |
| break; |
| |
| case HAL_I2C_LISTEN_COMPLETE_CB_ID : |
| hi2c->ListenCpltCallback = HAL_I2C_ListenCpltCallback; /* Legacy weak ListenCpltCallback */ |
| break; |
| |
| case HAL_I2C_MEM_TX_COMPLETE_CB_ID : |
| hi2c->MemTxCpltCallback = HAL_I2C_MemTxCpltCallback; /* Legacy weak MemTxCpltCallback */ |
| break; |
| |
| case HAL_I2C_MEM_RX_COMPLETE_CB_ID : |
| hi2c->MemRxCpltCallback = HAL_I2C_MemRxCpltCallback; /* Legacy weak MemRxCpltCallback */ |
| break; |
| |
| case HAL_I2C_ERROR_CB_ID : |
| hi2c->ErrorCallback = HAL_I2C_ErrorCallback; /* Legacy weak ErrorCallback */ |
| break; |
| |
| case HAL_I2C_ABORT_CB_ID : |
| hi2c->AbortCpltCallback = HAL_I2C_AbortCpltCallback; /* Legacy weak AbortCpltCallback */ |
| break; |
| |
| case HAL_I2C_MSPINIT_CB_ID : |
| hi2c->MspInitCallback = HAL_I2C_MspInit; /* Legacy weak MspInit */ |
| break; |
| |
| case HAL_I2C_MSPDEINIT_CB_ID : |
| hi2c->MspDeInitCallback = HAL_I2C_MspDeInit; /* Legacy weak MspDeInit */ |
| break; |
| |
| default : |
| /* Update the error code */ |
| hi2c->ErrorCode |= HAL_I2C_ERROR_INVALID_CALLBACK; |
| |
| /* Return error status */ |
| status = HAL_ERROR; |
| break; |
| } |
| } |
| else if (HAL_I2C_STATE_RESET == hi2c->State) |
| { |
| switch (CallbackID) |
| { |
| case HAL_I2C_MSPINIT_CB_ID : |
| hi2c->MspInitCallback = HAL_I2C_MspInit; /* Legacy weak MspInit */ |
| break; |
| |
| case HAL_I2C_MSPDEINIT_CB_ID : |
| hi2c->MspDeInitCallback = HAL_I2C_MspDeInit; /* Legacy weak MspDeInit */ |
| break; |
| |
| default : |
| /* Update the error code */ |
| hi2c->ErrorCode |= HAL_I2C_ERROR_INVALID_CALLBACK; |
| |
| /* Return error status */ |
| status = HAL_ERROR; |
| break; |
| } |
| } |
| else |
| { |
| /* Update the error code */ |
| hi2c->ErrorCode |= HAL_I2C_ERROR_INVALID_CALLBACK; |
| |
| /* Return error status */ |
| status = HAL_ERROR; |
| } |
| |
| /* Release Lock */ |
| __HAL_UNLOCK(hi2c); |
| return status; |
| } |
| |
| /** |
| * @brief Register the Slave Address Match I2C Callback |
| * To be used instead of the weak HAL_I2C_AddrCallback() predefined callback |
| * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains |
| * the configuration information for the specified I2C. |
| * @param pCallback pointer to the Address Match Callback function |
| * @retval HAL status |
| */ |
| HAL_StatusTypeDef HAL_I2C_RegisterAddrCallback(I2C_HandleTypeDef *hi2c, pI2C_AddrCallbackTypeDef pCallback) |
| { |
| HAL_StatusTypeDef status = HAL_OK; |
| |
| if (pCallback == NULL) |
| { |
| /* Update the error code */ |
| hi2c->ErrorCode |= HAL_I2C_ERROR_INVALID_CALLBACK; |
| |
| return HAL_ERROR; |
| } |
| /* Process locked */ |
| __HAL_LOCK(hi2c); |
| |
| if (HAL_I2C_STATE_READY == hi2c->State) |
| { |
| hi2c->AddrCallback = pCallback; |
| } |
| else |
| { |
| /* Update the error code */ |
| hi2c->ErrorCode |= HAL_I2C_ERROR_INVALID_CALLBACK; |
| |
| /* Return error status */ |
| status = HAL_ERROR; |
| } |
| |
| /* Release Lock */ |
| __HAL_UNLOCK(hi2c); |
| return status; |
| } |
| |
| /** |
| * @brief UnRegister the Slave Address Match I2C Callback |
| * Info Ready I2C Callback is redirected to the weak HAL_I2C_AddrCallback() predefined callback |
| * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains |
| * the configuration information for the specified I2C. |
| * @retval HAL status |
| */ |
| HAL_StatusTypeDef HAL_I2C_UnRegisterAddrCallback(I2C_HandleTypeDef *hi2c) |
| { |
| HAL_StatusTypeDef status = HAL_OK; |
| |
| /* Process locked */ |
| __HAL_LOCK(hi2c); |
| |
| if (HAL_I2C_STATE_READY == hi2c->State) |
| { |
| hi2c->AddrCallback = HAL_I2C_AddrCallback; /* Legacy weak AddrCallback */ |
| } |
| else |
| { |
| /* Update the error code */ |
| hi2c->ErrorCode |= HAL_I2C_ERROR_INVALID_CALLBACK; |
| |
| /* Return error status */ |
| status = HAL_ERROR; |
| } |
| |
| /* Release Lock */ |
| __HAL_UNLOCK(hi2c); |
| return status; |
| } |
| |
| #endif /* USE_HAL_I2C_REGISTER_CALLBACKS */ |
| |
| /** |
| * @} |
| */ |
| |
| /** @defgroup I2C_Exported_Functions_Group2 Input and Output operation functions |
| * @brief Data transfers functions |
| * |
| @verbatim |
| =============================================================================== |
| ##### IO operation functions ##### |
| =============================================================================== |
| [..] |
| This subsection provides a set of functions allowing to manage the I2C data |
| transfers. |
| |
| (#) There are two modes of transfer: |
| (++) Blocking mode : The communication is performed in the polling mode. |
| The 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 functions return the status of the transfer startup. |
| The end of the data processing will be indicated through the |
| dedicated I2C IRQ when using Interrupt mode or the DMA IRQ when |
| using DMA mode. |
| |
| (#) Blocking mode functions are : |
| (++) HAL_I2C_Master_Transmit() |
| (++) HAL_I2C_Master_Receive() |
| (++) HAL_I2C_Slave_Transmit() |
| (++) HAL_I2C_Slave_Receive() |
| (++) HAL_I2C_Mem_Write() |
| (++) HAL_I2C_Mem_Read() |
| (++) HAL_I2C_IsDeviceReady() |
| |
| (#) No-Blocking mode functions with Interrupt are : |
| (++) HAL_I2C_Master_Transmit_IT() |
| (++) HAL_I2C_Master_Receive_IT() |
| (++) HAL_I2C_Slave_Transmit_IT() |
| (++) HAL_I2C_Slave_Receive_IT() |
| (++) HAL_I2C_Mem_Write_IT() |
| (++) HAL_I2C_Mem_Read_IT() |
| (++) HAL_I2C_Master_Seq_Transmit_IT() |
| (++) HAL_I2C_Master_Seq_Receive_IT() |
| (++) HAL_I2C_Slave_Seq_Transmit_IT() |
| (++) HAL_I2C_Slave_Seq_Receive_IT() |
| (++) HAL_I2C_EnableListen_IT() |
| (++) HAL_I2C_DisableListen_IT() |
| (++) HAL_I2C_Master_Abort_IT() |
| |
| (#) No-Blocking mode functions with DMA are : |
| (++) HAL_I2C_Master_Transmit_DMA() |
| (++) HAL_I2C_Master_Receive_DMA() |
| (++) HAL_I2C_Slave_Transmit_DMA() |
| (++) HAL_I2C_Slave_Receive_DMA() |
| (++) HAL_I2C_Mem_Write_DMA() |
| (++) HAL_I2C_Mem_Read_DMA() |
| (++) HAL_I2C_Master_Seq_Transmit_DMA() |
| (++) HAL_I2C_Master_Seq_Receive_DMA() |
| (++) HAL_I2C_Slave_Seq_Transmit_DMA() |
| (++) HAL_I2C_Slave_Seq_Receive_DMA() |
| |
| (#) A set of Transfer Complete Callbacks are provided in non Blocking mode: |
| (++) HAL_I2C_MasterTxCpltCallback() |
| (++) HAL_I2C_MasterRxCpltCallback() |
| (++) HAL_I2C_SlaveTxCpltCallback() |
| (++) HAL_I2C_SlaveRxCpltCallback() |
| (++) HAL_I2C_MemTxCpltCallback() |
| (++) HAL_I2C_MemRxCpltCallback() |
| (++) HAL_I2C_AddrCallback() |
| (++) HAL_I2C_ListenCpltCallback() |
| (++) HAL_I2C_ErrorCallback() |
| (++) HAL_I2C_AbortCpltCallback() |
| |
| @endverbatim |
| * @{ |
| */ |
| |
| /** |
| * @brief Transmits in master mode an amount of data in blocking mode. |
| * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains |
| * the configuration information for the specified I2C. |
| * @param DevAddress Target device address: The device 7 bits address value |
| * in datasheet must be shifted to the left before calling the interface |
| * @param pData Pointer to data buffer |
| * @param Size Amount of data to be sent |
| * @param Timeout Timeout duration |
| * @retval HAL status |
| */ |
| HAL_StatusTypeDef HAL_I2C_Master_Transmit(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size, uint32_t Timeout) |
| { |
| uint32_t tickstart; |
| |
| if (hi2c->State == HAL_I2C_STATE_READY) |
| { |
| /* Process Locked */ |
| __HAL_LOCK(hi2c); |
| |
| /* Init tickstart for timeout management*/ |
| tickstart = HAL_GetTick(); |
| |
| if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY, tickstart) != HAL_OK) |
| { |
| return HAL_ERROR; |
| } |
| |
| hi2c->State = HAL_I2C_STATE_BUSY_TX; |
| hi2c->Mode = HAL_I2C_MODE_MASTER; |
| hi2c->ErrorCode = HAL_I2C_ERROR_NONE; |
| |
| /* Prepare transfer parameters */ |
| hi2c->pBuffPtr = pData; |
| hi2c->XferCount = Size; |
| hi2c->XferISR = NULL; |
| |
| /* Send Slave Address */ |
| /* Set NBYTES to write and reload if hi2c->XferCount > MAX_NBYTE_SIZE and generate RESTART */ |
| if (hi2c->XferCount > MAX_NBYTE_SIZE) |
| { |
| hi2c->XferSize = MAX_NBYTE_SIZE; |
| I2C_TransferConfig(hi2c, DevAddress, (uint8_t)hi2c->XferSize, I2C_RELOAD_MODE, I2C_GENERATE_START_WRITE); |
| } |
| else |
| { |
| hi2c->XferSize = hi2c->XferCount; |
| I2C_TransferConfig(hi2c, DevAddress, (uint8_t)hi2c->XferSize, I2C_AUTOEND_MODE, I2C_GENERATE_START_WRITE); |
| } |
| |
| while (hi2c->XferCount > 0U) |
| { |
| /* Wait until TXIS flag is set */ |
| if (I2C_WaitOnTXISFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK) |
| { |
| return HAL_ERROR; |
| } |
| /* Write data to TXDR */ |
| hi2c->Instance->TXDR = *hi2c->pBuffPtr; |
| |
| /* Increment Buffer pointer */ |
| hi2c->pBuffPtr++; |
| |
| hi2c->XferCount--; |
| hi2c->XferSize--; |
| |
| if ((hi2c->XferCount != 0U) && (hi2c->XferSize == 0U)) |
| { |
| /* Wait until TCR flag is set */ |
| if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_TCR, RESET, Timeout, tickstart) != HAL_OK) |
| { |
| return HAL_ERROR; |
| } |
| |
| if (hi2c->XferCount > MAX_NBYTE_SIZE) |
| { |
| hi2c->XferSize = MAX_NBYTE_SIZE; |
| I2C_TransferConfig(hi2c, DevAddress, (uint8_t)hi2c->XferSize, I2C_RELOAD_MODE, I2C_NO_STARTSTOP); |
| } |
| else |
| { |
| hi2c->XferSize = hi2c->XferCount; |
| I2C_TransferConfig(hi2c, DevAddress, (uint8_t)hi2c->XferSize, I2C_AUTOEND_MODE, I2C_NO_STARTSTOP); |
| } |
| } |
| } |
| |
| /* No need to Check TC flag, with AUTOEND mode the stop is automatically generated */ |
| /* Wait until STOPF flag is set */ |
| if (I2C_WaitOnSTOPFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK) |
| { |
| return HAL_ERROR; |
| } |
| |
| /* Clear STOP Flag */ |
| __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_STOPF); |
| |
| /* Clear Configuration Register 2 */ |
| I2C_RESET_CR2(hi2c); |
| |
| hi2c->State = HAL_I2C_STATE_READY; |
| hi2c->Mode = HAL_I2C_MODE_NONE; |
| |
| /* Process Unlocked */ |
| __HAL_UNLOCK(hi2c); |
| |
| return HAL_OK; |
| } |
| else |
| { |
| return HAL_BUSY; |
| } |
| } |
| |
| /** |
| * @brief Receives in master mode an amount of data in blocking mode. |
| * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains |
| * the configuration information for the specified I2C. |
| * @param DevAddress Target device address: The device 7 bits address value |
| * in datasheet must be shifted to the left before calling the interface |
| * @param pData Pointer to data buffer |
| * @param Size Amount of data to be sent |
| * @param Timeout Timeout duration |
| * @retval HAL status |
| */ |
| HAL_StatusTypeDef HAL_I2C_Master_Receive(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size, uint32_t Timeout) |
| { |
| uint32_t tickstart; |
| |
| if (hi2c->State == HAL_I2C_STATE_READY) |
| { |
| /* Process Locked */ |
| __HAL_LOCK(hi2c); |
| |
| /* Init tickstart for timeout management*/ |
| tickstart = HAL_GetTick(); |
| |
| if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY, tickstart) != HAL_OK) |
| { |
| return HAL_ERROR; |
| } |
| |
| hi2c->State = HAL_I2C_STATE_BUSY_RX; |
| hi2c->Mode = HAL_I2C_MODE_MASTER; |
| hi2c->ErrorCode = HAL_I2C_ERROR_NONE; |
| |
| /* Prepare transfer parameters */ |
| hi2c->pBuffPtr = pData; |
| hi2c->XferCount = Size; |
| hi2c->XferISR = NULL; |
| |
| /* Send Slave Address */ |
| /* Set NBYTES to write and reload if hi2c->XferCount > MAX_NBYTE_SIZE and generate RESTART */ |
| if (hi2c->XferCount > MAX_NBYTE_SIZE) |
| { |
| hi2c->XferSize = MAX_NBYTE_SIZE; |
| I2C_TransferConfig(hi2c, DevAddress, (uint8_t)hi2c->XferSize, I2C_RELOAD_MODE, I2C_GENERATE_START_READ); |
| } |
| else |
| { |
| hi2c->XferSize = hi2c->XferCount; |
| I2C_TransferConfig(hi2c, DevAddress, (uint8_t)hi2c->XferSize, I2C_AUTOEND_MODE, I2C_GENERATE_START_READ); |
| } |
| |
| while (hi2c->XferCount > 0U) |
| { |
| /* Wait until RXNE flag is set */ |
| if (I2C_WaitOnRXNEFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK) |
| { |
| return HAL_ERROR; |
| } |
| |
| /* Read data from RXDR */ |
| *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->RXDR; |
| |
| /* Increment Buffer pointer */ |
| hi2c->pBuffPtr++; |
| |
| hi2c->XferSize--; |
| hi2c->XferCount--; |
| |
| if ((hi2c->XferCount != 0U) && (hi2c->XferSize == 0U)) |
| { |
| /* Wait until TCR flag is set */ |
| if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_TCR, RESET, Timeout, tickstart) != HAL_OK) |
| { |
| return HAL_ERROR; |
| } |
| |
| if (hi2c->XferCount > MAX_NBYTE_SIZE) |
| { |
| hi2c->XferSize = MAX_NBYTE_SIZE; |
| I2C_TransferConfig(hi2c, DevAddress, (uint8_t)hi2c->XferSize, I2C_RELOAD_MODE, I2C_NO_STARTSTOP); |
| } |
| else |
| { |
| hi2c->XferSize = hi2c->XferCount; |
| I2C_TransferConfig(hi2c, DevAddress, (uint8_t)hi2c->XferSize, I2C_AUTOEND_MODE, I2C_NO_STARTSTOP); |
| } |
| } |
| } |
| |
| /* No need to Check TC flag, with AUTOEND mode the stop is automatically generated */ |
| /* Wait until STOPF flag is set */ |
| if (I2C_WaitOnSTOPFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK) |
| { |
| return HAL_ERROR; |
| } |
| |
| /* Clear STOP Flag */ |
| __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_STOPF); |
| |
| /* Clear Configuration Register 2 */ |
| I2C_RESET_CR2(hi2c); |
| |
| hi2c->State = HAL_I2C_STATE_READY; |
| hi2c->Mode = HAL_I2C_MODE_NONE; |
| |
| /* Process Unlocked */ |
| __HAL_UNLOCK(hi2c); |
| |
| return HAL_OK; |
| } |
| else |
| { |
| return HAL_BUSY; |
| } |
| } |
| |
| /** |
| * @brief Transmits in slave mode an amount of data in blocking mode. |
| * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains |
| * the configuration information for the specified I2C. |
| * @param pData Pointer to data buffer |
| * @param Size Amount of data to be sent |
| * @param Timeout Timeout duration |
| * @retval HAL status |
| */ |
| HAL_StatusTypeDef HAL_I2C_Slave_Transmit(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size, uint32_t Timeout) |
| { |
| uint32_t tickstart; |
| |
| if (hi2c->State == HAL_I2C_STATE_READY) |
| { |
| if ((pData == NULL) || (Size == 0U)) |
| { |
| hi2c->ErrorCode = HAL_I2C_ERROR_INVALID_PARAM; |
| return HAL_ERROR; |
| } |
| /* Process Locked */ |
| __HAL_LOCK(hi2c); |
| |
| /* Init tickstart for timeout management*/ |
| tickstart = HAL_GetTick(); |
| |
| hi2c->State = HAL_I2C_STATE_BUSY_TX; |
| hi2c->Mode = HAL_I2C_MODE_SLAVE; |
| hi2c->ErrorCode = HAL_I2C_ERROR_NONE; |
| |
| /* Prepare transfer parameters */ |
| hi2c->pBuffPtr = pData; |
| hi2c->XferCount = Size; |
| hi2c->XferISR = NULL; |
| |
| /* Enable Address Acknowledge */ |
| hi2c->Instance->CR2 &= ~I2C_CR2_NACK; |
| |
| /* Wait until ADDR flag is set */ |
| if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_ADDR, RESET, Timeout, tickstart) != HAL_OK) |
| { |
| /* Disable Address Acknowledge */ |
| hi2c->Instance->CR2 |= I2C_CR2_NACK; |
| return HAL_ERROR; |
| } |
| |
| /* Clear ADDR flag */ |
| __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_ADDR); |
| |
| /* If 10bit addressing mode is selected */ |
| if (hi2c->Init.AddressingMode == I2C_ADDRESSINGMODE_10BIT) |
| { |
| /* Wait until ADDR flag is set */ |
| if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_ADDR, RESET, Timeout, tickstart) != HAL_OK) |
| { |
| /* Disable Address Acknowledge */ |
| hi2c->Instance->CR2 |= I2C_CR2_NACK; |
| return HAL_ERROR; |
| } |
| |
| /* Clear ADDR flag */ |
| __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_ADDR); |
| } |
| |
| /* Wait until DIR flag is set Transmitter mode */ |
| if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_DIR, RESET, Timeout, tickstart) != HAL_OK) |
| { |
| /* Disable Address Acknowledge */ |
| hi2c->Instance->CR2 |= I2C_CR2_NACK; |
| return HAL_ERROR; |
| } |
| |
| while (hi2c->XferCount > 0U) |
| { |
| /* Wait until TXIS flag is set */ |
| if (I2C_WaitOnTXISFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK) |
| { |
| /* Disable Address Acknowledge */ |
| hi2c->Instance->CR2 |= I2C_CR2_NACK; |
| return HAL_ERROR; |
| } |
| |
| /* Write data to TXDR */ |
| hi2c->Instance->TXDR = *hi2c->pBuffPtr; |
| |
| /* Increment Buffer pointer */ |
| hi2c->pBuffPtr++; |
| |
| hi2c->XferCount--; |
| } |
| |
| /* Wait until STOP flag is set */ |
| if (I2C_WaitOnSTOPFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK) |
| { |
| /* Disable Address Acknowledge */ |
| hi2c->Instance->CR2 |= I2C_CR2_NACK; |
| |
| if (hi2c->ErrorCode == HAL_I2C_ERROR_AF) |
| { |
| /* Normal use case for Transmitter mode */ |
| /* A NACK is generated to confirm the end of transfer */ |
| hi2c->ErrorCode = HAL_I2C_ERROR_NONE; |
| } |
| else |
| { |
| return HAL_ERROR; |
| } |
| } |
| |
| /* Clear STOP flag */ |
| __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_STOPF); |
| |
| /* Wait until BUSY flag is reset */ |
| if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, Timeout, tickstart) != HAL_OK) |
| { |
| /* Disable Address Acknowledge */ |
| hi2c->Instance->CR2 |= I2C_CR2_NACK; |
| return HAL_ERROR; |
| } |
| |
| /* Disable Address Acknowledge */ |
| hi2c->Instance->CR2 |= I2C_CR2_NACK; |
| |
| hi2c->State = HAL_I2C_STATE_READY; |
| hi2c->Mode = HAL_I2C_MODE_NONE; |
| |
| /* Process Unlocked */ |
| __HAL_UNLOCK(hi2c); |
| |
| return HAL_OK; |
| } |
| else |
| { |
| return HAL_BUSY; |
| } |
| } |
| |
| /** |
| * @brief Receive in slave mode an amount of data in blocking mode |
| * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains |
| * the configuration information for the specified I2C. |
| * @param pData Pointer to data buffer |
| * @param Size Amount of data to be sent |
| * @param Timeout Timeout duration |
| * @retval HAL status |
| */ |
| HAL_StatusTypeDef HAL_I2C_Slave_Receive(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size, uint32_t Timeout) |
| { |
| uint32_t tickstart; |
| |
| if (hi2c->State == HAL_I2C_STATE_READY) |
| { |
| if ((pData == NULL) || (Size == 0U)) |
| { |
| hi2c->ErrorCode = HAL_I2C_ERROR_INVALID_PARAM; |
| return HAL_ERROR; |
| } |
| /* Process Locked */ |
| __HAL_LOCK(hi2c); |
| |
| /* Init tickstart for timeout management*/ |
| tickstart = HAL_GetTick(); |
| |
| hi2c->State = HAL_I2C_STATE_BUSY_RX; |
| hi2c->Mode = HAL_I2C_MODE_SLAVE; |
| hi2c->ErrorCode = HAL_I2C_ERROR_NONE; |
| |
| /* Prepare transfer parameters */ |
| hi2c->pBuffPtr = pData; |
| hi2c->XferCount = Size; |
| hi2c->XferISR = NULL; |
| |
| /* Enable Address Acknowledge */ |
| hi2c->Instance->CR2 &= ~I2C_CR2_NACK; |
| |
| /* Wait until ADDR flag is set */ |
| if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_ADDR, RESET, Timeout, tickstart) != HAL_OK) |
| { |
| /* Disable Address Acknowledge */ |
| hi2c->Instance->CR2 |= I2C_CR2_NACK; |
| return HAL_ERROR; |
| } |
| |
| /* Clear ADDR flag */ |
| __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_ADDR); |
| |
| /* Wait until DIR flag is reset Receiver mode */ |
| if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_DIR, SET, Timeout, tickstart) != HAL_OK) |
| { |
| /* Disable Address Acknowledge */ |
| hi2c->Instance->CR2 |= I2C_CR2_NACK; |
| return HAL_ERROR; |
| } |
| |
| while (hi2c->XferCount > 0U) |
| { |
| /* Wait until RXNE flag is set */ |
| if (I2C_WaitOnRXNEFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK) |
| { |
| /* Disable Address Acknowledge */ |
| hi2c->Instance->CR2 |= I2C_CR2_NACK; |
| |
| /* Store Last receive data if any */ |
| if (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_RXNE) == SET) |
| { |
| /* Read data from RXDR */ |
| *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->RXDR; |
| |
| /* Increment Buffer pointer */ |
| hi2c->pBuffPtr++; |
| |
| hi2c->XferCount--; |
| } |
| |
| return HAL_ERROR; |
| } |
| |
| /* Read data from RXDR */ |
| *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->RXDR; |
| |
| /* Increment Buffer pointer */ |
| hi2c->pBuffPtr++; |
| |
| hi2c->XferCount--; |
| } |
| |
| /* Wait until STOP flag is set */ |
| if (I2C_WaitOnSTOPFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK) |
| { |
| /* Disable Address Acknowledge */ |
| hi2c->Instance->CR2 |= I2C_CR2_NACK; |
| return HAL_ERROR; |
| } |
| |
| /* Clear STOP flag */ |
| __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_STOPF); |
| |
| /* Wait until BUSY flag is reset */ |
| if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, Timeout, tickstart) != HAL_OK) |
| { |
| /* Disable Address Acknowledge */ |
| hi2c->Instance->CR2 |= I2C_CR2_NACK; |
| return HAL_ERROR; |
| } |
| |
| /* Disable Address Acknowledge */ |
| hi2c->Instance->CR2 |= I2C_CR2_NACK; |
| |
| hi2c->State = HAL_I2C_STATE_READY; |
| hi2c->Mode = HAL_I2C_MODE_NONE; |
| |
| /* Process Unlocked */ |
| __HAL_UNLOCK(hi2c); |
| |
| return HAL_OK; |
| } |
| else |
| { |
| return HAL_BUSY; |
| } |
| } |
| |
| /** |
| * @brief Transmit in master mode an amount of data in non-blocking mode with Interrupt |
| * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains |
| * the configuration information for the specified I2C. |
| * @param DevAddress Target device address: The device 7 bits address value |
| * in datasheet must be shifted to the left before calling the interface |
| * @param pData Pointer to data buffer |
| * @param Size Amount of data to be sent |
| * @retval HAL status |
| */ |
| HAL_StatusTypeDef HAL_I2C_Master_Transmit_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size) |
| { |
| uint32_t xfermode; |
| |
| if (hi2c->State == HAL_I2C_STATE_READY) |
| { |
| if (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) == SET) |
| { |
| return HAL_BUSY; |
| } |
| |
| /* Process Locked */ |
| __HAL_LOCK(hi2c); |
| |
| hi2c->State = HAL_I2C_STATE_BUSY_TX; |
| hi2c->Mode = HAL_I2C_MODE_MASTER; |
| hi2c->ErrorCode = HAL_I2C_ERROR_NONE; |
| |
| /* Prepare transfer parameters */ |
| hi2c->pBuffPtr = pData; |
| hi2c->XferCount = Size; |
| hi2c->XferOptions = I2C_NO_OPTION_FRAME; |
| hi2c->XferISR = I2C_Master_ISR_IT; |
| |
| if (hi2c->XferCount > MAX_NBYTE_SIZE) |
| { |
| hi2c->XferSize = MAX_NBYTE_SIZE; |
| xfermode = I2C_RELOAD_MODE; |
| } |
| else |
| { |
| hi2c->XferSize = hi2c->XferCount; |
| xfermode = I2C_AUTOEND_MODE; |
| } |
| |
| /* Send Slave Address */ |
| /* Set NBYTES to write and reload if hi2c->XferCount > MAX_NBYTE_SIZE */ |
| I2C_TransferConfig(hi2c, DevAddress, (uint8_t)hi2c->XferSize, xfermode, I2C_GENERATE_START_WRITE); |
| |
| /* Process Unlocked */ |
| __HAL_UNLOCK(hi2c); |
| |
| /* Note : The I2C interrupts must be enabled after unlocking current process |
| to avoid the risk of I2C interrupt handle execution before current |
| process unlock */ |
| |
| /* Enable ERR, TC, STOP, NACK, TXI interrupt */ |
| /* possible to enable all of these */ |
| /* I2C_IT_ERRI | I2C_IT_TCI| I2C_IT_STOPI| I2C_IT_NACKI | I2C_IT_ADDRI | I2C_IT_RXI | I2C_IT_TXI */ |
| I2C_Enable_IRQ(hi2c, I2C_XFER_TX_IT); |
| |
| return HAL_OK; |
| } |
| else |
| { |
| return HAL_BUSY; |
| } |
| } |
| |
| /** |
| * @brief Receive in master mode an amount of data in non-blocking mode with Interrupt |
| * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains |
| * the configuration information for the specified I2C. |
| * @param DevAddress Target device address: The device 7 bits address value |
| * in datasheet must be shifted to the left before calling the interface |
| * @param pData Pointer to data buffer |
| * @param Size Amount of data to be sent |
| * @retval HAL status |
| */ |
| HAL_StatusTypeDef HAL_I2C_Master_Receive_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size) |
| { |
| uint32_t xfermode; |
| |
| if (hi2c->State == HAL_I2C_STATE_READY) |
| { |
| if (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) == SET) |
| { |
| return HAL_BUSY; |
| } |
| |
| /* Process Locked */ |
| __HAL_LOCK(hi2c); |
| |
| hi2c->State = HAL_I2C_STATE_BUSY_RX; |
| hi2c->Mode = HAL_I2C_MODE_MASTER; |
| hi2c->ErrorCode = HAL_I2C_ERROR_NONE; |
| |
| /* Prepare transfer parameters */ |
| hi2c->pBuffPtr = pData; |
| hi2c->XferCount = Size; |
| hi2c->XferOptions = I2C_NO_OPTION_FRAME; |
| hi2c->XferISR = I2C_Master_ISR_IT; |
| |
| if (hi2c->XferCount > MAX_NBYTE_SIZE) |
| { |
| hi2c->XferSize = MAX_NBYTE_SIZE; |
| xfermode = I2C_RELOAD_MODE; |
| } |
| else |
| { |
| hi2c->XferSize = hi2c->XferCount; |
| xfermode = I2C_AUTOEND_MODE; |
| } |
| |
| /* Send Slave Address */ |
| /* Set NBYTES to write and reload if hi2c->XferCount > MAX_NBYTE_SIZE */ |
| I2C_TransferConfig(hi2c, DevAddress, (uint8_t)hi2c->XferSize, xfermode, I2C_GENERATE_START_READ); |
| |
| /* Process Unlocked */ |
| __HAL_UNLOCK(hi2c); |
| |
| /* Note : The I2C interrupts must be enabled after unlocking current process |
| to avoid the risk of I2C interrupt handle execution before current |
| process unlock */ |
| |
| /* Enable ERR, TC, STOP, NACK, RXI interrupt */ |
| /* possible to enable all of these */ |
| /* I2C_IT_ERRI | I2C_IT_TCI| I2C_IT_STOPI| I2C_IT_NACKI | I2C_IT_ADDRI | I2C_IT_RXI | I2C_IT_TXI */ |
| I2C_Enable_IRQ(hi2c, I2C_XFER_RX_IT); |
| |
| return HAL_OK; |
| } |
| else |
| { |
| return HAL_BUSY; |
| } |
| } |
| |
| /** |
| * @brief Transmit in slave mode an amount of data in non-blocking mode with Interrupt |
| * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains |
| * the configuration information for the specified I2C. |
| * @param pData Pointer to data buffer |
| * @param Size Amount of data to be sent |
| * @retval HAL status |
| */ |
| HAL_StatusTypeDef HAL_I2C_Slave_Transmit_IT(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size) |
| { |
| if (hi2c->State == HAL_I2C_STATE_READY) |
| { |
| /* Process Locked */ |
| __HAL_LOCK(hi2c); |
| |
| hi2c->State = HAL_I2C_STATE_BUSY_TX; |
| hi2c->Mode = HAL_I2C_MODE_SLAVE; |
| hi2c->ErrorCode = HAL_I2C_ERROR_NONE; |
| |
| /* Enable Address Acknowledge */ |
| hi2c->Instance->CR2 &= ~I2C_CR2_NACK; |
| |
| /* Prepare transfer parameters */ |
| hi2c->pBuffPtr = pData; |
| hi2c->XferCount = Size; |
| hi2c->XferSize = hi2c->XferCount; |
| hi2c->XferOptions = I2C_NO_OPTION_FRAME; |
| hi2c->XferISR = I2C_Slave_ISR_IT; |
| |
| /* Process Unlocked */ |
| __HAL_UNLOCK(hi2c); |
| |
| /* Note : The I2C interrupts must be enabled after unlocking current process |
| to avoid the risk of I2C interrupt handle execution before current |
| process unlock */ |
| |
| /* Enable ERR, TC, STOP, NACK, TXI interrupt */ |
| /* possible to enable all of these */ |
| /* I2C_IT_ERRI | I2C_IT_TCI| I2C_IT_STOPI| I2C_IT_NACKI | I2C_IT_ADDRI | I2C_IT_RXI | I2C_IT_TXI */ |
| I2C_Enable_IRQ(hi2c, I2C_XFER_TX_IT | I2C_XFER_LISTEN_IT); |
| |
| return HAL_OK; |
| } |
| else |
| { |
| return HAL_BUSY; |
| } |
| } |
| |
| /** |
| * @brief Receive in slave mode an amount of data in non-blocking mode with Interrupt |
| * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains |
| * the configuration information for the specified I2C. |
| * @param pData Pointer to data buffer |
| * @param Size Amount of data to be sent |
| * @retval HAL status |
| */ |
| HAL_StatusTypeDef HAL_I2C_Slave_Receive_IT(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size) |
| { |
| if (hi2c->State == HAL_I2C_STATE_READY) |
| { |
| /* Process Locked */ |
| __HAL_LOCK(hi2c); |
| |
| hi2c->State = HAL_I2C_STATE_BUSY_RX; |
| hi2c->Mode = HAL_I2C_MODE_SLAVE; |
| hi2c->ErrorCode = HAL_I2C_ERROR_NONE; |
| |
| /* Enable Address Acknowledge */ |
| hi2c->Instance->CR2 &= ~I2C_CR2_NACK; |
| |
| /* Prepare transfer parameters */ |
| hi2c->pBuffPtr = pData; |
| hi2c->XferCount = Size; |
| hi2c->XferSize = hi2c->XferCount; |
| hi2c->XferOptions = I2C_NO_OPTION_FRAME; |
| hi2c->XferISR = I2C_Slave_ISR_IT; |
| |
| /* Process Unlocked */ |
| __HAL_UNLOCK(hi2c); |
| |
| /* Note : The I2C interrupts must be enabled after unlocking current process |
| to avoid the risk of I2C interrupt handle execution before current |
| process unlock */ |
| |
| /* Enable ERR, TC, STOP, NACK, RXI interrupt */ |
| /* possible to enable all of these */ |
| /* I2C_IT_ERRI | I2C_IT_TCI| I2C_IT_STOPI| I2C_IT_NACKI | I2C_IT_ADDRI | I2C_IT_RXI | I2C_IT_TXI */ |
| I2C_Enable_IRQ(hi2c, I2C_XFER_RX_IT | I2C_XFER_LISTEN_IT); |
| |
| return HAL_OK; |
| } |
| else |
| { |
| return HAL_BUSY; |
| } |
| } |
| |
| /** |
| * @brief Transmit in master mode an amount of data in non-blocking mode with DMA |
| * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains |
| * the configuration information for the specified I2C. |
| * @param DevAddress Target device address: The device 7 bits address value |
| * in datasheet must be shifted to the left before calling the interface |
| * @param pData Pointer to data buffer |
| * @param Size Amount of data to be sent |
| * @retval HAL status |
| */ |
| HAL_StatusTypeDef HAL_I2C_Master_Transmit_DMA(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size) |
| { |
| uint32_t xfermode; |
| HAL_StatusTypeDef dmaxferstatus; |
| |
| if (hi2c->State == HAL_I2C_STATE_READY) |
| { |
| if (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) == SET) |
| { |
| return HAL_BUSY; |
| } |
| |
| /* Process Locked */ |
| __HAL_LOCK(hi2c); |
| |
| hi2c->State = HAL_I2C_STATE_BUSY_TX; |
| hi2c->Mode = HAL_I2C_MODE_MASTER; |
| hi2c->ErrorCode = HAL_I2C_ERROR_NONE; |
| |
| /* Prepare transfer parameters */ |
| hi2c->pBuffPtr = pData; |
| hi2c->XferCount = Size; |
| hi2c->XferOptions = I2C_NO_OPTION_FRAME; |
| hi2c->XferISR = I2C_Master_ISR_DMA; |
| |
| if (hi2c->XferCount > MAX_NBYTE_SIZE) |
| { |
| hi2c->XferSize = MAX_NBYTE_SIZE; |
| xfermode = I2C_RELOAD_MODE; |
| } |
| else |
| { |
| hi2c->XferSize = hi2c->XferCount; |
| xfermode = I2C_AUTOEND_MODE; |
| } |
| |
| if (hi2c->XferSize > 0U) |
| { |
| if (hi2c->hdmatx != NULL) |
| { |
| /* Set the I2C DMA transfer complete callback */ |
| hi2c->hdmatx->XferCpltCallback = I2C_DMAMasterTransmitCplt; |
| |
| /* Set the DMA error callback */ |
| hi2c->hdmatx->XferErrorCallback = I2C_DMAError; |
| |
| /* Set the unused DMA callbacks to NULL */ |
| hi2c->hdmatx->XferHalfCpltCallback = NULL; |
| hi2c->hdmatx->XferAbortCallback = NULL; |
| |
| /* Enable the DMA channel */ |
| dmaxferstatus = HAL_DMA_Start_IT(hi2c->hdmatx, (uint32_t)pData, (uint32_t)&hi2c->Instance->TXDR, hi2c->XferSize); |
| } |
| else |
| { |
| /* Update I2C state */ |
| hi2c->State = HAL_I2C_STATE_READY; |
| hi2c->Mode = HAL_I2C_MODE_NONE; |
| |
| /* Update I2C error code */ |
| hi2c->ErrorCode |= HAL_I2C_ERROR_DMA_PARAM; |
| |
| /* Process Unlocked */ |
| __HAL_UNLOCK(hi2c); |
| |
| return HAL_ERROR; |
| } |
| |
| if (dmaxferstatus == HAL_OK) |
| { |
| /* Send Slave Address */ |
| /* Set NBYTES to write and reload if hi2c->XferCount > MAX_NBYTE_SIZE and generate RESTART */ |
| I2C_TransferConfig(hi2c, DevAddress, (uint8_t)hi2c->XferSize, xfermode, I2C_GENERATE_START_WRITE); |
| |
| /* Update XferCount value */ |
| hi2c->XferCount -= hi2c->XferSize; |
| |
| /* Process Unlocked */ |
| __HAL_UNLOCK(hi2c); |
| |
| /* Note : The I2C interrupts must be enabled after unlocking current process |
| to avoid the risk of I2C interrupt handle execution before current |
| process unlock */ |
| /* Enable ERR and NACK interrupts */ |
| I2C_Enable_IRQ(hi2c, I2C_XFER_ERROR_IT); |
| |
| /* Enable DMA Request */ |
| hi2c->Instance->CR1 |= I2C_CR1_TXDMAEN; |
| } |
| else |
| { |
| /* Update I2C state */ |
| hi2c->State = HAL_I2C_STATE_READY; |
| hi2c->Mode = HAL_I2C_MODE_NONE; |
| |
| /* Update I2C error code */ |
| hi2c->ErrorCode |= HAL_I2C_ERROR_DMA; |
| |
| /* Process Unlocked */ |
| __HAL_UNLOCK(hi2c); |
| |
| return HAL_ERROR; |
| } |
| } |
| else |
| { |
| /* Update Transfer ISR function pointer */ |
| hi2c->XferISR = I2C_Master_ISR_IT; |
| |
| /* Send Slave Address */ |
| /* Set NBYTES to write and generate START condition */ |
| I2C_TransferConfig(hi2c, DevAddress, (uint8_t)hi2c->XferSize, I2C_AUTOEND_MODE, I2C_GENERATE_START_WRITE); |
| |
| /* Process Unlocked */ |
| __HAL_UNLOCK(hi2c); |
| |
| /* Note : The I2C interrupts must be enabled after unlocking current process |
| to avoid the risk of I2C interrupt handle execution before current |
| process unlock */ |
| /* Enable ERR, TC, STOP, NACK, TXI interrupt */ |
| /* possible to enable all of these */ |
| /* I2C_IT_ERRI | I2C_IT_TCI| I2C_IT_STOPI| I2C_IT_NACKI | I2C_IT_ADDRI | I2C_IT_RXI | I2C_IT_TXI */ |
| I2C_Enable_IRQ(hi2c, I2C_XFER_TX_IT); |
| } |
| |
| return HAL_OK; |
| } |
| else |
| { |
| return HAL_BUSY; |
| } |
| } |
| |
| /** |
| * @brief Receive in master mode an amount of data in non-blocking mode with DMA |
| * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains |
| * the configuration information for the specified I2C. |
| * @param DevAddress Target device address: The device 7 bits address value |
| * in datasheet must be shifted to the left before calling the interface |
| * @param pData Pointer to data buffer |
| * @param Size Amount of data to be sent |
| * @retval HAL status |
| */ |
| HAL_StatusTypeDef HAL_I2C_Master_Receive_DMA(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size) |
| { |
| uint32_t xfermode; |
| HAL_StatusTypeDef dmaxferstatus; |
| |
| if (hi2c->State == HAL_I2C_STATE_READY) |
| { |
| if (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) == SET) |
| { |
| return HAL_BUSY; |
| } |
| |
| /* Process Locked */ |
| __HAL_LOCK(hi2c); |
| |
| hi2c->State = HAL_I2C_STATE_BUSY_RX; |
| hi2c->Mode = HAL_I2C_MODE_MASTER; |
| hi2c->ErrorCode = HAL_I2C_ERROR_NONE; |
| |
| /* Prepare transfer parameters */ |
| hi2c->pBuffPtr = pData; |
| hi2c->XferCount = Size; |
| hi2c->XferOptions = I2C_NO_OPTION_FRAME; |
| hi2c->XferISR = I2C_Master_ISR_DMA; |
| |
| if (hi2c->XferCount > MAX_NBYTE_SIZE) |
| { |
| hi2c->XferSize = MAX_NBYTE_SIZE; |
| xfermode = I2C_RELOAD_MODE; |
| } |
| else |
| { |
| hi2c->XferSize = hi2c->XferCount; |
| xfermode = I2C_AUTOEND_MODE; |
| } |
| |
| if (hi2c->XferSize > 0U) |
| { |
| if (hi2c->hdmarx != NULL) |
| { |
| /* Set the I2C DMA transfer complete callback */ |
| hi2c->hdmarx->XferCpltCallback = I2C_DMAMasterReceiveCplt; |
| |
| /* Set the DMA error callback */ |
| hi2c->hdmarx->XferErrorCallback = I2C_DMAError; |
| |
| /* Set the unused DMA callbacks to NULL */ |
| hi2c->hdmarx->XferHalfCpltCallback = NULL; |
| hi2c->hdmarx->XferAbortCallback = NULL; |
| |
| /* Enable the DMA channel */ |
| dmaxferstatus = HAL_DMA_Start_IT(hi2c->hdmarx, (uint32_t)&hi2c->Instance->RXDR, (uint32_t)pData, hi2c->XferSize); |
| } |
| else |
| { |
| /* Update I2C state */ |
| hi2c->State = HAL_I2C_STATE_READY; |
| hi2c->Mode = HAL_I2C_MODE_NONE; |
| |
| /* Update I2C error code */ |
| hi2c->ErrorCode |= HAL_I2C_ERROR_DMA_PARAM; |
| |
| /* Process Unlocked */ |
| __HAL_UNLOCK(hi2c); |
| |
| return HAL_ERROR; |
| } |
| |
| if (dmaxferstatus == HAL_OK) |
| { |
| /* Send Slave Address */ |
| /* Set NBYTES to read and reload if hi2c->XferCount > MAX_NBYTE_SIZE and generate RESTART */ |
| I2C_TransferConfig(hi2c, DevAddress, (uint8_t)hi2c->XferSize, xfermode, I2C_GENERATE_START_READ); |
| |
| /* Update XferCount value */ |
| hi2c->XferCount -= hi2c->XferSize; |
| |
| /* Process Unlocked */ |
| __HAL_UNLOCK(hi2c); |
| |
| /* Note : The I2C interrupts must be enabled after unlocking current process |
| to avoid the risk of I2C interrupt handle execution before current |
| process unlock */ |
| /* Enable ERR and NACK interrupts */ |
| I2C_Enable_IRQ(hi2c, I2C_XFER_ERROR_IT); |
| |
| /* Enable DMA Request */ |
| hi2c->Instance->CR1 |= I2C_CR1_RXDMAEN; |
| } |
| else |
| { |
| /* Update I2C state */ |
| hi2c->State = HAL_I2C_STATE_READY; |
| hi2c->Mode = HAL_I2C_MODE_NONE; |
| |
| /* Update I2C error code */ |
| hi2c->ErrorCode |= HAL_I2C_ERROR_DMA; |
| |
| /* Process Unlocked */ |
| __HAL_UNLOCK(hi2c); |
| |
| return HAL_ERROR; |
| } |
| } |
| else |
| { |
| /* Update Transfer ISR function pointer */ |
| hi2c->XferISR = I2C_Master_ISR_IT; |
| |
| /* Send Slave Address */ |
| /* Set NBYTES to read and generate START condition */ |
| I2C_TransferConfig(hi2c, DevAddress, (uint8_t)hi2c->XferSize, I2C_AUTOEND_MODE, I2C_GENERATE_START_READ); |
| |
| /* Process Unlocked */ |
| __HAL_UNLOCK(hi2c); |
| |
| /* Note : The I2C interrupts must be enabled after unlocking current process |
| to avoid the risk of I2C interrupt handle execution before current |
| process unlock */ |
| /* Enable ERR, TC, STOP, NACK, TXI interrupt */ |
| /* possible to enable all of these */ |
| /* I2C_IT_ERRI | I2C_IT_TCI| I2C_IT_STOPI| I2C_IT_NACKI | I2C_IT_ADDRI | I2C_IT_RXI | I2C_IT_TXI */ |
| I2C_Enable_IRQ(hi2c, I2C_XFER_TX_IT); |
| } |
| |
| return HAL_OK; |
| } |
| else |
| { |
| return HAL_BUSY; |
| } |
| } |
| |
| /** |
| * @brief Transmit in slave mode an amount of data in non-blocking mode with DMA |
| * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains |
| * the configuration information for the specified I2C. |
| * @param pData Pointer to data buffer |
| * @param Size Amount of data to be sent |
| * @retval HAL status |
| */ |
| HAL_StatusTypeDef HAL_I2C_Slave_Transmit_DMA(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size) |
| { |
| HAL_StatusTypeDef dmaxferstatus; |
| |
| if (hi2c->State == HAL_I2C_STATE_READY) |
| { |
| if ((pData == NULL) || (Size == 0U)) |
| { |
| hi2c->ErrorCode = HAL_I2C_ERROR_INVALID_PARAM; |
| return HAL_ERROR; |
| } |
| /* Process Locked */ |
| __HAL_LOCK(hi2c); |
| |
| hi2c->State = HAL_I2C_STATE_BUSY_TX; |
| hi2c->Mode = HAL_I2C_MODE_SLAVE; |
| hi2c->ErrorCode = HAL_I2C_ERROR_NONE; |
| |
| /* Prepare transfer parameters */ |
| hi2c->pBuffPtr = pData; |
| hi2c->XferCount = Size; |
| hi2c->XferSize = hi2c->XferCount; |
| hi2c->XferOptions = I2C_NO_OPTION_FRAME; |
| hi2c->XferISR = I2C_Slave_ISR_DMA; |
| |
| if (hi2c->hdmatx != NULL) |
| { |
| /* Set the I2C DMA transfer complete callback */ |
| hi2c->hdmatx->XferCpltCallback = I2C_DMASlaveTransmitCplt; |
| |
| /* Set the DMA error callback */ |
| hi2c->hdmatx->XferErrorCallback = I2C_DMAError; |
| |
| /* Set the unused DMA callbacks to NULL */ |
| hi2c->hdmatx->XferHalfCpltCallback = NULL; |
| hi2c->hdmatx->XferAbortCallback = NULL; |
| |
| /* Enable the DMA channel */ |
| dmaxferstatus = HAL_DMA_Start_IT(hi2c->hdmatx, (uint32_t)pData, (uint32_t)&hi2c->Instance->TXDR, hi2c->XferSize); |
| } |
| else |
| { |
| /* Update I2C state */ |
| hi2c->State = HAL_I2C_STATE_LISTEN; |
| hi2c->Mode = HAL_I2C_MODE_NONE; |
| |
| /* Update I2C error code */ |
| hi2c->ErrorCode |= HAL_I2C_ERROR_DMA_PARAM; |
| |
| /* Process Unlocked */ |
| __HAL_UNLOCK(hi2c); |
| |
| return HAL_ERROR; |
| } |
| |
| if (dmaxferstatus == HAL_OK) |
| { |
| /* Enable Address Acknowledge */ |
| hi2c->Instance->CR2 &= ~I2C_CR2_NACK; |
| |
| /* Process Unlocked */ |
| __HAL_UNLOCK(hi2c); |
| |
| /* Note : The I2C interrupts must be enabled after unlocking current process |
| to avoid the risk of I2C interrupt handle execution before current |
| process unlock */ |
| /* Enable ERR, STOP, NACK, ADDR interrupts */ |
| I2C_Enable_IRQ(hi2c, I2C_XFER_LISTEN_IT); |
| |
| /* Enable DMA Request */ |
| hi2c->Instance->CR1 |= I2C_CR1_TXDMAEN; |
| } |
| else |
| { |
| /* Update I2C state */ |
| hi2c->State = HAL_I2C_STATE_LISTEN; |
| hi2c->Mode = HAL_I2C_MODE_NONE; |
| |
| /* Update I2C error code */ |
| hi2c->ErrorCode |= HAL_I2C_ERROR_DMA; |
| |
| /* Process Unlocked */ |
| __HAL_UNLOCK(hi2c); |
| |
| return HAL_ERROR; |
| } |
| |
| return HAL_OK; |
| } |
| else |
| { |
| return HAL_BUSY; |
| } |
| } |
| |
| /** |
| * @brief Receive in slave mode an amount of data in non-blocking mode with DMA |
| * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains |
| * the configuration information for the specified I2C. |
| * @param pData Pointer to data buffer |
| * @param Size Amount of data to be sent |
| * @retval HAL status |
| */ |
| HAL_StatusTypeDef HAL_I2C_Slave_Receive_DMA(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size) |
| { |
| HAL_StatusTypeDef dmaxferstatus; |
| |
| if (hi2c->State == HAL_I2C_STATE_READY) |
| { |
| if ((pData == NULL) || (Size == 0U)) |
| { |
| hi2c->ErrorCode = HAL_I2C_ERROR_INVALID_PARAM; |
| return HAL_ERROR; |
| } |
| /* Process Locked */ |
| __HAL_LOCK(hi2c); |
| |
| hi2c->State = HAL_I2C_STATE_BUSY_RX; |
| hi2c->Mode = HAL_I2C_MODE_SLAVE; |
| hi2c->ErrorCode = HAL_I2C_ERROR_NONE; |
| |
| /* Prepare transfer parameters */ |
| hi2c->pBuffPtr = pData; |
| hi2c->XferCount = Size; |
| hi2c->XferSize = hi2c->XferCount; |
| hi2c->XferOptions = I2C_NO_OPTION_FRAME; |
| hi2c->XferISR = I2C_Slave_ISR_DMA; |
| |
| if (hi2c->hdmarx != NULL) |
| { |
| /* Set the I2C DMA transfer complete callback */ |
| hi2c->hdmarx->XferCpltCallback = I2C_DMASlaveReceiveCplt; |
| |
| /* Set the DMA error callback */ |
| hi2c->hdmarx->XferErrorCallback = I2C_DMAError; |
| |
| /* Set the unused DMA callbacks to NULL */ |
| hi2c->hdmarx->XferHalfCpltCallback = NULL; |
| hi2c->hdmarx->XferAbortCallback = NULL; |
| |
| /* Enable the DMA channel */ |
| dmaxferstatus = HAL_DMA_Start_IT(hi2c->hdmarx, (uint32_t)&hi2c->Instance->RXDR, (uint32_t)pData, hi2c->XferSize); |
| } |
| else |
| { |
| /* Update I2C state */ |
| hi2c->State = HAL_I2C_STATE_LISTEN; |
| hi2c->Mode = HAL_I2C_MODE_NONE; |
| |
| /* Update I2C error code */ |
| hi2c->ErrorCode |= HAL_I2C_ERROR_DMA_PARAM; |
| |
| /* Process Unlocked */ |
| __HAL_UNLOCK(hi2c); |
| |
| return HAL_ERROR; |
| } |
| |
| if (dmaxferstatus == HAL_OK) |
| { |
| /* Enable Address Acknowledge */ |
| hi2c->Instance->CR2 &= ~I2C_CR2_NACK; |
| |
| /* Process Unlocked */ |
| __HAL_UNLOCK(hi2c); |
| |
| /* Note : The I2C interrupts must be enabled after unlocking current process |
| to avoid the risk of I2C interrupt handle execution before current |
| process unlock */ |
| /* Enable ERR, STOP, NACK, ADDR interrupts */ |
| I2C_Enable_IRQ(hi2c, I2C_XFER_LISTEN_IT); |
| |
| /* Enable DMA Request */ |
| hi2c->Instance->CR1 |= I2C_CR1_RXDMAEN; |
| } |
| else |
| { |
| /* Update I2C state */ |
| hi2c->State = HAL_I2C_STATE_LISTEN; |
| hi2c->Mode = HAL_I2C_MODE_NONE; |
| |
| /* Update I2C error code */ |
| hi2c->ErrorCode |= HAL_I2C_ERROR_DMA; |
| |
| /* Process Unlocked */ |
| __HAL_UNLOCK(hi2c); |
| |
| return HAL_ERROR; |
| } |
| |
| return HAL_OK; |
| } |
| else |
| { |
| return HAL_BUSY; |
| } |
| } |
| /** |
| * @brief Write an amount of data in blocking mode to a specific memory address |
| * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains |
| * the configuration information for the specified I2C. |
| * @param DevAddress Target device address: The device 7 bits address value |
| * in datasheet must be shifted to the left before calling the interface |
| * @param MemAddress Internal memory address |
| * @param MemAddSize Size of internal memory address |
| * @param pData Pointer to data buffer |
| * @param Size Amount of data to be sent |
| * @param Timeout Timeout duration |
| * @retval HAL status |
| */ |
| HAL_StatusTypeDef HAL_I2C_Mem_Write(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size, uint32_t Timeout) |
| { |
| uint32_t tickstart; |
| |
| /* Check the parameters */ |
| assert_param(IS_I2C_MEMADD_SIZE(MemAddSize)); |
| |
| if (hi2c->State == HAL_I2C_STATE_READY) |
| { |
| if ((pData == NULL) || (Size == 0U)) |
| { |
| hi2c->ErrorCode = HAL_I2C_ERROR_INVALID_PARAM; |
| return HAL_ERROR; |
| } |
| |
| /* Process Locked */ |
| __HAL_LOCK(hi2c); |
| |
| /* Init tickstart for timeout management*/ |
| tickstart = HAL_GetTick(); |
| |
| if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY, tickstart) != HAL_OK) |
| { |
| return HAL_ERROR; |
| } |
| |
| hi2c->State = HAL_I2C_STATE_BUSY_TX; |
| hi2c->Mode = HAL_I2C_MODE_MEM; |
| hi2c->ErrorCode = HAL_I2C_ERROR_NONE; |
| |
| /* Prepare transfer parameters */ |
| hi2c->pBuffPtr = pData; |
| hi2c->XferCount = Size; |
| hi2c->XferISR = NULL; |
| |
| /* Send Slave Address and Memory Address */ |
| if (I2C_RequestMemoryWrite(hi2c, DevAddress, MemAddress, MemAddSize, Timeout, tickstart) != HAL_OK) |
| { |
| /* Process Unlocked */ |
| __HAL_UNLOCK(hi2c); |
| return HAL_ERROR; |
| } |
| |
| /* Set NBYTES to write and reload if hi2c->XferCount > MAX_NBYTE_SIZE */ |
| if (hi2c->XferCount > MAX_NBYTE_SIZE) |
| { |
| hi2c->XferSize = MAX_NBYTE_SIZE; |
| I2C_TransferConfig(hi2c, DevAddress, (uint8_t)hi2c->XferSize, I2C_RELOAD_MODE, I2C_NO_STARTSTOP); |
| } |
| else |
| { |
| hi2c->XferSize = hi2c->XferCount; |
| I2C_TransferConfig(hi2c, DevAddress, (uint8_t)hi2c->XferSize, I2C_AUTOEND_MODE, I2C_NO_STARTSTOP); |
| } |
| |
| do |
| { |
| /* Wait until TXIS flag is set */ |
| if (I2C_WaitOnTXISFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK) |
| { |
| return HAL_ERROR; |
| } |
| |
| /* Write data to TXDR */ |
| hi2c->Instance->TXDR = *hi2c->pBuffPtr; |
| |
| /* Increment Buffer pointer */ |
| hi2c->pBuffPtr++; |
| |
| hi2c->XferCount--; |
| hi2c->XferSize--; |
| |
| if ((hi2c->XferCount != 0U) && (hi2c->XferSize == 0U)) |
| { |
| /* Wait until TCR flag is set */ |
| if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_TCR, RESET, Timeout, tickstart) != HAL_OK) |
| { |
| return HAL_ERROR; |
| } |
| |
| if (hi2c->XferCount > MAX_NBYTE_SIZE) |
| { |
| hi2c->XferSize = MAX_NBYTE_SIZE; |
| I2C_TransferConfig(hi2c, DevAddress, (uint8_t)hi2c->XferSize, I2C_RELOAD_MODE, I2C_NO_STARTSTOP); |
| } |
| else |
| { |
| hi2c->XferSize = hi2c->XferCount; |
| I2C_TransferConfig(hi2c, DevAddress, (uint8_t)hi2c->XferSize, I2C_AUTOEND_MODE, I2C_NO_STARTSTOP); |
| } |
| } |
| |
| } |
| while (hi2c->XferCount > 0U); |
| |
| /* No need to Check TC flag, with AUTOEND mode the stop is automatically generated */ |
| /* Wait until STOPF flag is reset */ |
| if (I2C_WaitOnSTOPFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK) |
| { |
| return HAL_ERROR; |
| } |
| |
| /* Clear STOP Flag */ |
| __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_STOPF); |
| |
| /* Clear Configuration Register 2 */ |
| I2C_RESET_CR2(hi2c); |
| |
| hi2c->State = HAL_I2C_STATE_READY; |
| hi2c->Mode = HAL_I2C_MODE_NONE; |
| |
| /* Process Unlocked */ |
| __HAL_UNLOCK(hi2c); |
| |
| return HAL_OK; |
| } |
| else |
| { |
| return HAL_BUSY; |
| } |
| } |
| |
| /** |
| * @brief Read an amount of data in blocking mode from a specific memory address |
| * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains |
| * the configuration information for the specified I2C. |
| * @param DevAddress Target device address: The device 7 bits address value |
| * in datasheet must be shifted to the left before calling the interface |
| * @param MemAddress Internal memory address |
| * @param MemAddSize Size of internal memory address |
| * @param pData Pointer to data buffer |
| * @param Size Amount of data to be sent |
| * @param Timeout Timeout duration |
| * @retval HAL status |
| */ |
| HAL_StatusTypeDef HAL_I2C_Mem_Read(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size, uint32_t Timeout) |
| { |
| uint32_t tickstart; |
| |
| /* Check the parameters */ |
| assert_param(IS_I2C_MEMADD_SIZE(MemAddSize)); |
| |
| if (hi2c->State == HAL_I2C_STATE_READY) |
| { |
| if ((pData == NULL) || (Size == 0U)) |
| { |
| hi2c->ErrorCode = HAL_I2C_ERROR_INVALID_PARAM; |
| return HAL_ERROR; |
| } |
| |
| /* Process Locked */ |
| __HAL_LOCK(hi2c); |
| |
| /* Init tickstart for timeout management*/ |
| tickstart = HAL_GetTick(); |
| |
| if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY, tickstart) != HAL_OK) |
| { |
| return HAL_ERROR; |
| } |
| |
| hi2c->State = HAL_I2C_STATE_BUSY_RX; |
| hi2c->Mode = HAL_I2C_MODE_MEM; |
| hi2c->ErrorCode = HAL_I2C_ERROR_NONE; |
| |
| /* Prepare transfer parameters */ |
| hi2c->pBuffPtr = pData; |
| hi2c->XferCount = Size; |
| hi2c->XferISR = NULL; |
| |
| /* Send Slave Address and Memory Address */ |
| if (I2C_RequestMemoryRead(hi2c, DevAddress, MemAddress, MemAddSize, Timeout, tickstart) != HAL_OK) |
| { |
| /* Process Unlocked */ |
| __HAL_UNLOCK(hi2c); |
| return HAL_ERROR; |
| } |
| |
| /* Send Slave Address */ |
| /* Set NBYTES to write and reload if hi2c->XferCount > MAX_NBYTE_SIZE and generate RESTART */ |
| if (hi2c->XferCount > MAX_NBYTE_SIZE) |
| { |
| hi2c->XferSize = MAX_NBYTE_SIZE; |
| I2C_TransferConfig(hi2c, DevAddress, (uint8_t)hi2c->XferSize, I2C_RELOAD_MODE, I2C_GENERATE_START_READ); |
| } |
| else |
| { |
| hi2c->XferSize = hi2c->XferCount; |
| I2C_TransferConfig(hi2c, DevAddress, (uint8_t)hi2c->XferSize, I2C_AUTOEND_MODE, I2C_GENERATE_START_READ); |
| } |
| |
| do |
| { |
| /* Wait until RXNE flag is set */ |
| if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_RXNE, RESET, Timeout, tickstart) != HAL_OK) |
| { |
| return HAL_ERROR; |
| } |
| |
| /* Read data from RXDR */ |
| *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->RXDR; |
| |
| /* Increment Buffer pointer */ |
| hi2c->pBuffPtr++; |
| |
| hi2c->XferSize--; |
| hi2c->XferCount--; |
| |
| if ((hi2c->XferCount != 0U) && (hi2c->XferSize == 0U)) |
| { |
| /* Wait until TCR flag is set */ |
| if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_TCR, RESET, Timeout, tickstart) != HAL_OK) |
| { |
| return HAL_ERROR; |
| } |
| |
| if (hi2c->XferCount > MAX_NBYTE_SIZE) |
| { |
| hi2c->XferSize = MAX_NBYTE_SIZE; |
| I2C_TransferConfig(hi2c, DevAddress, (uint8_t) hi2c->XferSize, I2C_RELOAD_MODE, I2C_NO_STARTSTOP); |
| } |
| else |
| { |
| hi2c->XferSize = hi2c->XferCount; |
| I2C_TransferConfig(hi2c, DevAddress, (uint8_t)hi2c->XferSize, I2C_AUTOEND_MODE, I2C_NO_STARTSTOP); |
| } |
| } |
| } |
| while (hi2c->XferCount > 0U); |
| |
| /* No need to Check TC flag, with AUTOEND mode the stop is automatically generated */ |
| /* Wait until STOPF flag is reset */ |
| if (I2C_WaitOnSTOPFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK) |
| { |
| return HAL_ERROR; |
| } |
| |
| /* Clear STOP Flag */ |
| __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_STOPF); |
| |
| /* Clear Configuration Register 2 */ |
| I2C_RESET_CR2(hi2c); |
| |
| hi2c->State = HAL_I2C_STATE_READY; |
| hi2c->Mode = HAL_I2C_MODE_NONE; |
| |
| /* Process Unlocked */ |
| __HAL_UNLOCK(hi2c); |
| |
| return HAL_OK; |
| } |
| else |
| { |
| return HAL_BUSY; |
| } |
| } |
| /** |
| * @brief Write an amount of data in non-blocking mode with Interrupt to a specific memory address |
| * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains |
| * the configuration information for the specified I2C. |
| * @param DevAddress Target device address: The device 7 bits address value |
| * in datasheet must be shifted to the left before calling the interface |
| * @param MemAddress Internal memory address |
| * @param MemAddSize Size of internal memory address |
| * @param pData Pointer to data buffer |
| * @param Size Amount of data to be sent |
| * @retval HAL status |
| */ |
| HAL_StatusTypeDef HAL_I2C_Mem_Write_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size) |
| { |
| uint32_t tickstart; |
| uint32_t xfermode; |
| |
| /* Check the parameters */ |
| assert_param(IS_I2C_MEMADD_SIZE(MemAddSize)); |
| |
| if (hi2c->State == HAL_I2C_STATE_READY) |
| { |
| if ((pData == NULL) || (Size == 0U)) |
| { |
| hi2c->ErrorCode = HAL_I2C_ERROR_INVALID_PARAM; |
| return HAL_ERROR; |
| } |
| |
| if (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) == SET) |
| { |
| return HAL_BUSY; |
| } |
| |
| /* Process Locked */ |
| __HAL_LOCK(hi2c); |
| |
| /* Init tickstart for timeout management*/ |
| tickstart = HAL_GetTick(); |
| |
| hi2c->State = HAL_I2C_STATE_BUSY_TX; |
| hi2c->Mode = HAL_I2C_MODE_MEM; |
| hi2c->ErrorCode = HAL_I2C_ERROR_NONE; |
| |
| /* Prepare transfer parameters */ |
| hi2c->pBuffPtr = pData; |
| hi2c->XferCount = Size; |
| hi2c->XferOptions = I2C_NO_OPTION_FRAME; |
| hi2c->XferISR = I2C_Master_ISR_IT; |
| |
| if (hi2c->XferCount > MAX_NBYTE_SIZE) |
| { |
| hi2c->XferSize = MAX_NBYTE_SIZE; |
| xfermode = I2C_RELOAD_MODE; |
| } |
| else |
| { |
| hi2c->XferSize = hi2c->XferCount; |
| xfermode = I2C_AUTOEND_MODE; |
| } |
| |
| /* Send Slave Address and Memory Address */ |
| if (I2C_RequestMemoryWrite(hi2c, DevAddress, MemAddress, MemAddSize, I2C_TIMEOUT_FLAG, tickstart) != HAL_OK) |
| { |
| /* Process Unlocked */ |
| __HAL_UNLOCK(hi2c); |
| return HAL_ERROR; |
| } |
| |
| /* Set NBYTES to write and reload if hi2c->XferCount > MAX_NBYTE_SIZE and generate RESTART */ |
| I2C_TransferConfig(hi2c, DevAddress, (uint8_t)hi2c->XferSize, xfermode, I2C_NO_STARTSTOP); |
| |
| /* Process Unlocked */ |
| __HAL_UNLOCK(hi2c); |
| |
| /* Note : The I2C interrupts must be enabled after unlocking current process |
| to avoid the risk of I2C interrupt handle execution before current |
| process unlock */ |
| |
| /* Enable ERR, TC, STOP, NACK, TXI interrupt */ |
| /* possible to enable all of these */ |
| /* I2C_IT_ERRI | I2C_IT_TCI| I2C_IT_STOPI| I2C_IT_NACKI | I2C_IT_ADDRI | I2C_IT_RXI | I2C_IT_TXI */ |
| I2C_Enable_IRQ(hi2c, I2C_XFER_TX_IT); |
| |
| return HAL_OK; |
| } |
| else |
| { |
| return HAL_BUSY; |
| } |
| } |
| |
| /** |
| * @brief Read an amount of data in non-blocking mode with Interrupt from a specific memory address |
| * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains |
| * the configuration information for the specified I2C. |
| * @param DevAddress Target device address: The device 7 bits address value |
| * in datasheet must be shifted to the left before calling the interface |
| * @param MemAddress Internal memory address |
| * @param MemAddSize Size of internal memory address |
| * @param pData Pointer to data buffer |
| * @param Size Amount of data to be sent |
| * @retval HAL status |
| */ |
| HAL_StatusTypeDef HAL_I2C_Mem_Read_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size) |
| { |
| uint32_t tickstart; |
| uint32_t xfermode; |
| |
| /* Check the parameters */ |
| assert_param(IS_I2C_MEMADD_SIZE(MemAddSize)); |
| |
| if (hi2c->State == HAL_I2C_STATE_READY) |
| { |
| if ((pData == NULL) || (Size == 0U)) |
| { |
| hi2c->ErrorCode = HAL_I2C_ERROR_INVALID_PARAM; |
| return HAL_ERROR; |
| } |
| |
| if (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) == SET) |
| { |
| return HAL_BUSY; |
| } |
| |
| /* Process Locked */ |
| __HAL_LOCK(hi2c); |
| |
| /* Init tickstart for timeout management*/ |
| tickstart = HAL_GetTick(); |
| |
| hi2c->State = HAL_I2C_STATE_BUSY_RX; |
| hi2c->Mode = HAL_I2C_MODE_MEM; |
| hi2c->ErrorCode = HAL_I2C_ERROR_NONE; |
| |
| /* Prepare transfer parameters */ |
| hi2c->pBuffPtr = pData; |
| hi2c->XferCount = Size; |
| hi2c->XferOptions = I2C_NO_OPTION_FRAME; |
| hi2c->XferISR = I2C_Master_ISR_IT; |
| |
| if (hi2c->XferCount > MAX_NBYTE_SIZE) |
| { |
| hi2c->XferSize = MAX_NBYTE_SIZE; |
| xfermode = I2C_RELOAD_MODE; |
| } |
| else |
| { |
| hi2c->XferSize = hi2c->XferCount; |
| xfermode = I2C_AUTOEND_MODE; |
| } |
| |
| /* Send Slave Address and Memory Address */ |
| if (I2C_RequestMemoryRead(hi2c, DevAddress, MemAddress, MemAddSize, I2C_TIMEOUT_FLAG, tickstart) != HAL_OK) |
| { |
| /* Process Unlocked */ |
| __HAL_UNLOCK(hi2c); |
| return HAL_ERROR; |
| } |
| |
| /* Set NBYTES to write and reload if hi2c->XferCount > MAX_NBYTE_SIZE and generate RESTART */ |
| I2C_TransferConfig(hi2c, DevAddress, (uint8_t)hi2c->XferSize, xfermode, I2C_GENERATE_START_READ); |
| |
| /* Process Unlocked */ |
| __HAL_UNLOCK(hi2c); |
| |
| /* Note : The I2C interrupts must be enabled after unlocking current process |
| to avoid the risk of I2C interrupt handle execution before current |
| process unlock */ |
| |
| /* Enable ERR, TC, STOP, NACK, RXI interrupt */ |
| /* possible to enable all of these */ |
| /* I2C_IT_ERRI | I2C_IT_TCI| I2C_IT_STOPI| I2C_IT_NACKI | I2C_IT_ADDRI | I2C_IT_RXI | I2C_IT_TXI */ |
| I2C_Enable_IRQ(hi2c, I2C_XFER_RX_IT); |
| |
| return HAL_OK; |
| } |
| else |
| { |
| return HAL_BUSY; |
| } |
| } |
| /** |
| * @brief Write an amount of data in non-blocking mode with DMA to a specific memory address |
| * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains |
| * the configuration information for the specified I2C. |
| * @param DevAddress Target device address: The device 7 bits address value |
| * in datasheet must be shifted to the left before calling the interface |
| * @param MemAddress Internal memory address |
| * @param MemAddSize Size of internal memory address |
| * @param pData Pointer to data buffer |
| * @param Size Amount of data to be sent |
| * @retval HAL status |
| */ |
| HAL_StatusTypeDef HAL_I2C_Mem_Write_DMA(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size) |
| { |
| uint32_t tickstart; |
| uint32_t xfermode; |
| HAL_StatusTypeDef dmaxferstatus; |
| |
| /* Check the parameters */ |
| assert_param(IS_I2C_MEMADD_SIZE(MemAddSize)); |
| |
| if (hi2c->State == HAL_I2C_STATE_READY) |
| { |
| if ((pData == NULL) || (Size == 0U)) |
| { |
| hi2c->ErrorCode = HAL_I2C_ERROR_INVALID_PARAM; |
| return HAL_ERROR; |
| } |
| |
| if (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) == SET) |
| { |
| return HAL_BUSY; |
| } |
| |
| /* Process Locked */ |
| __HAL_LOCK(hi2c); |
| |
| /* Init tickstart for timeout management*/ |
| tickstart = HAL_GetTick(); |
| |
| hi2c->State = HAL_I2C_STATE_BUSY_TX; |
| hi2c->Mode = HAL_I2C_MODE_MEM; |
| hi2c->ErrorCode = HAL_I2C_ERROR_NONE; |
| |
| /* Prepare transfer parameters */ |
| hi2c->pBuffPtr = pData; |
| hi2c->XferCount = Size; |
| hi2c->XferOptions = I2C_NO_OPTION_FRAME; |
| hi2c->XferISR = I2C_Master_ISR_DMA; |
| |
| if (hi2c->XferCount > MAX_NBYTE_SIZE) |
| { |
| hi2c->XferSize = MAX_NBYTE_SIZE; |
| xfermode = I2C_RELOAD_MODE; |
| } |
| else |
| { |
| hi2c->XferSize = hi2c->XferCount; |
| xfermode = I2C_AUTOEND_MODE; |
| } |
| |
| /* Send Slave Address and Memory Address */ |
| if (I2C_RequestMemoryWrite(hi2c, DevAddress, MemAddress, MemAddSize, I2C_TIMEOUT_FLAG, tickstart) != HAL_OK) |
| { |
| /* Process Unlocked */ |
| __HAL_UNLOCK(hi2c); |
| return HAL_ERROR; |
| } |
| |
| |
| if (hi2c->hdmatx != NULL) |
| { |
| /* Set the I2C DMA transfer complete callback */ |
| hi2c->hdmatx->XferCpltCallback = I2C_DMAMasterTransmitCplt; |
| |
| /* Set the DMA error callback */ |
| hi2c->hdmatx->XferErrorCallback = I2C_DMAError; |
| |
| /* Set the unused DMA callbacks to NULL */ |
| hi2c->hdmatx->XferHalfCpltCallback = NULL; |
| hi2c->hdmatx->XferAbortCallback = NULL; |
| |
| /* Enable the DMA channel */ |
| dmaxferstatus = HAL_DMA_Start_IT(hi2c->hdmatx, (uint32_t)pData, (uint32_t)&hi2c->Instance->TXDR, hi2c->XferSize); |
| } |
| else |
| { |
| /* Update I2C state */ |
| hi2c->State = HAL_I2C_STATE_READY; |
| hi2c->Mode = HAL_I2C_MODE_NONE; |
| |
| /* Update I2C error code */ |
| hi2c->ErrorCode |= HAL_I2C_ERROR_DMA_PARAM; |
| |
| /* Process Unlocked */ |
| __HAL_UNLOCK(hi2c); |
| |
| return HAL_ERROR; |
| } |
| |
| if (dmaxferstatus == HAL_OK) |
| { |
| /* Send Slave Address */ |
| /* Set NBYTES to write and reload if hi2c->XferCount > MAX_NBYTE_SIZE and generate RESTART */ |
| I2C_TransferConfig(hi2c, DevAddress, (uint8_t)hi2c->XferSize, xfermode, I2C_NO_STARTSTOP); |
| |
| /* Update XferCount value */ |
| hi2c->XferCount -= hi2c->XferSize; |
| |
| /* Process Unlocked */ |
| __HAL_UNLOCK(hi2c); |
| |
| /* Note : The I2C interrupts must be enabled after unlocking current process |
| to avoid the risk of I2C interrupt handle execution before current |
| process unlock */ |
| /* Enable ERR and NACK interrupts */ |
| I2C_Enable_IRQ(hi2c, I2C_XFER_ERROR_IT); |
| |
| /* Enable DMA Request */ |
| hi2c->Instance->CR1 |= I2C_CR1_TXDMAEN; |
| } |
| else |
| { |
| /* Update I2C state */ |
| hi2c->State = HAL_I2C_STATE_READY; |
| hi2c->Mode = HAL_I2C_MODE_NONE; |
| |
| /* Update I2C error code */ |
| hi2c->ErrorCode |= HAL_I2C_ERROR_DMA; |
| |
| /* Process Unlocked */ |
| __HAL_UNLOCK(hi2c); |
| |
| return HAL_ERROR; |
| } |
| |
| return HAL_OK; |
| } |
| else |
| { |
| return HAL_BUSY; |
| } |
| } |
| |
| /** |
| * @brief Reads an amount of data in non-blocking mode with DMA from a specific memory address. |
| * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains |
| * the configuration information for the specified I2C. |
| * @param DevAddress Target device address: The device 7 bits address value |
| * in datasheet must be shifted to the left before calling the interface |
| * @param MemAddress Internal memory address |
| * @param MemAddSize Size of internal memory address |
| * @param pData Pointer to data buffer |
| * @param Size Amount of data to be read |
| * @retval HAL status |
| */ |
| HAL_StatusTypeDef HAL_I2C_Mem_Read_DMA(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size) |
| { |
| uint32_t tickstart; |
| uint32_t xfermode; |
| HAL_StatusTypeDef dmaxferstatus; |
| |
| /* Check the parameters */ |
| assert_param(IS_I2C_MEMADD_SIZE(MemAddSize)); |
| |
| if (hi2c->State == HAL_I2C_STATE_READY) |
| { |
| if ((pData == NULL) || (Size == 0U)) |
| { |
| hi2c->ErrorCode = HAL_I2C_ERROR_INVALID_PARAM; |
| return HAL_ERROR; |
| } |
| |
| if (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) == SET) |
| { |
| return HAL_BUSY; |
| } |
| |
| /* Process Locked */ |
| __HAL_LOCK(hi2c); |
| |
| /* Init tickstart for timeout management*/ |
| tickstart = HAL_GetTick(); |
| |
| hi2c->State = HAL_I2C_STATE_BUSY_RX; |
| hi2c->Mode = HAL_I2C_MODE_MEM; |
| hi2c->ErrorCode = HAL_I2C_ERROR_NONE; |
| |
| /* Prepare transfer parameters */ |
| hi2c->pBuffPtr = pData; |
| hi2c->XferCount = Size; |
| hi2c->XferOptions = I2C_NO_OPTION_FRAME; |
| hi2c->XferISR = I2C_Master_ISR_DMA; |
| |
| if (hi2c->XferCount > MAX_NBYTE_SIZE) |
| { |
| hi2c->XferSize = MAX_NBYTE_SIZE; |
| xfermode = I2C_RELOAD_MODE; |
| } |
| else |
| { |
| hi2c->XferSize = hi2c->XferCount; |
| xfermode = I2C_AUTOEND_MODE; |
| } |
| |
| /* Send Slave Address and Memory Address */ |
| if (I2C_RequestMemoryRead(hi2c, DevAddress, MemAddress, MemAddSize, I2C_TIMEOUT_FLAG, tickstart) != HAL_OK) |
| { |
| /* Process Unlocked */ |
| __HAL_UNLOCK(hi2c); |
| return HAL_ERROR; |
| } |
| |
| if (hi2c->hdmarx != NULL) |
| { |
| /* Set the I2C DMA transfer complete callback */ |
| hi2c->hdmarx->XferCpltCallback = I2C_DMAMasterReceiveCplt; |
| |
| /* Set the DMA error callback */ |
| hi2c->hdmarx->XferErrorCallback = I2C_DMAError; |
| |
| /* Set the unused DMA callbacks to NULL */ |
| hi2c->hdmarx->XferHalfCpltCallback = NULL; |
| hi2c->hdmarx->XferAbortCallback = NULL; |
| |
| /* Enable the DMA channel */ |
| dmaxferstatus = HAL_DMA_Start_IT(hi2c->hdmarx, (uint32_t)&hi2c->Instance->RXDR, (uint32_t)pData, hi2c->XferSize); |
| } |
| else |
| { |
| /* Update I2C state */ |
| hi2c->State = HAL_I2C_STATE_READY; |
| hi2c->Mode = HAL_I2C_MODE_NONE; |
| |
| /* Update I2C error code */ |
| hi2c->ErrorCode |= HAL_I2C_ERROR_DMA_PARAM; |
| |
| /* Process Unlocked */ |
| __HAL_UNLOCK(hi2c); |
| |
| return HAL_ERROR; |
| } |
| |
| if (dmaxferstatus == HAL_OK) |
| { |
| /* Set NBYTES to write and reload if hi2c->XferCount > MAX_NBYTE_SIZE and generate RESTART */ |
| I2C_TransferConfig(hi2c, DevAddress, (uint8_t)hi2c->XferSize, xfermode, I2C_GENERATE_START_READ); |
| |
| /* Update XferCount value */ |
| hi2c->XferCount -= hi2c->XferSize; |
| |
| /* Process Unlocked */ |
| __HAL_UNLOCK(hi2c); |
| |
| /* Note : The I2C interrupts must be enabled after unlocking current process |
| to avoid the risk of I2C interrupt handle execution before current |
| process unlock */ |
| /* Enable ERR and NACK interrupts */ |
| I2C_Enable_IRQ(hi2c, I2C_XFER_ERROR_IT); |
| |
| /* Enable DMA Request */ |
| hi2c->Instance->CR1 |= I2C_CR1_RXDMAEN; |
| } |
| else |
| { |
| /* Update I2C state */ |
| hi2c->State = HAL_I2C_STATE_READY; |
| hi2c->Mode = HAL_I2C_MODE_NONE; |
| |
| /* Update I2C error code */ |
| hi2c->ErrorCode |= HAL_I2C_ERROR_DMA; |
| |
| /* Process Unlocked */ |
| __HAL_UNLOCK(hi2c); |
| |
| return HAL_ERROR; |
| } |
| |
| return HAL_OK; |
| } |
| else |
| { |
| return HAL_BUSY; |
| } |
| } |
| |
| /** |
| * @brief Checks if target device is ready for communication. |
| * @note This function is used with Memory devices |
| * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains |
| * the configuration information for the specified I2C. |
| * @param DevAddress Target device address: The device 7 bits address value |
| * in datasheet must be shifted to the left before calling the interface |
| * @param Trials Number of trials |
| * @param Timeout Timeout duration |
| * @retval HAL status |
| */ |
| HAL_StatusTypeDef HAL_I2C_IsDeviceReady(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint32_t Trials, uint32_t Timeout) |
| { |
| uint32_t tickstart; |
| |
| __IO uint32_t I2C_Trials = 0UL; |
| |
| FlagStatus tmp1; |
| FlagStatus tmp2; |
| |
| if (hi2c->State == HAL_I2C_STATE_READY) |
| { |
| if (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) == SET) |
| { |
| return HAL_BUSY; |
| } |
| |
| /* Process Locked */ |
| __HAL_LOCK(hi2c); |
| |
| hi2c->State = HAL_I2C_STATE_BUSY; |
| hi2c->ErrorCode = HAL_I2C_ERROR_NONE; |
| |
| do |
| { |
| /* Generate Start */ |
| hi2c->Instance->CR2 = I2C_GENERATE_START(hi2c->Init.AddressingMode, DevAddress); |
| |
| /* No need to Check TC flag, with AUTOEND mode the stop is automatically generated */ |
| /* Wait until STOPF flag is set or a NACK flag is set*/ |
| tickstart = HAL_GetTick(); |
| |
| tmp1 = __HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_STOPF); |
| tmp2 = __HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_AF); |
| |
| while ((tmp1 == RESET) && (tmp2 == RESET)) |
| { |
| if (Timeout != HAL_MAX_DELAY) |
| { |
| if (((HAL_GetTick() - tickstart) > Timeout) || (Timeout == 0U)) |
| { |
| /* Update I2C state */ |
| hi2c->State = HAL_I2C_STATE_READY; |
| |
| /* Update I2C error code */ |
| hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT; |
| |
| /* Process Unlocked */ |
| __HAL_UNLOCK(hi2c); |
| |
| return HAL_ERROR; |
| } |
| } |
| |
| tmp1 = __HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_STOPF); |
| tmp2 = __HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_AF); |
| } |
| |
| /* Check if the NACKF flag has not been set */ |
| if (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_AF) == RESET) |
| { |
| /* Wait until STOPF flag is reset */ |
| if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_STOPF, RESET, Timeout, tickstart) != HAL_OK) |
| { |
| return HAL_ERROR; |
| } |
| |
| /* Clear STOP Flag */ |
| __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_STOPF); |
| |
| /* Device is ready */ |
| hi2c->State = HAL_I2C_STATE_READY; |
| |
| /* Process Unlocked */ |
| __HAL_UNLOCK(hi2c); |
| |
| return HAL_OK; |
| } |
| else |
| { |
| /* Wait until STOPF flag is reset */ |
| if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_STOPF, RESET, Timeout, tickstart) != HAL_OK) |
| { |
| return HAL_ERROR; |
| } |
| |
| /* Clear NACK Flag */ |
| __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF); |
| |
| /* Clear STOP Flag, auto generated with autoend*/ |
| __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_STOPF); |
| } |
| |
| /* Check if the maximum allowed number of trials has been reached */ |
| if (I2C_Trials == Trials) |
| { |
| /* Generate Stop */ |
| hi2c->Instance->CR2 |= I2C_CR2_STOP; |
| |
| /* Wait until STOPF flag is reset */ |
| if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_STOPF, RESET, Timeout, tickstart) != HAL_OK) |
| { |
| return HAL_ERROR; |
| } |
| |
| /* Clear STOP Flag */ |
| __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_STOPF); |
| } |
| |
| /* Increment Trials */ |
| I2C_Trials++; |
| } |
| while (I2C_Trials < Trials); |
| |
| /* Update I2C state */ |
| hi2c->State = HAL_I2C_STATE_READY; |
| |
| /* Update I2C error code */ |
| hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT; |
| |
| /* Process Unlocked */ |
| __HAL_UNLOCK(hi2c); |
| |
| return HAL_ERROR; |
| } |
| else |
| { |
| return HAL_BUSY; |
| } |
| } |
| |
| /** |
| * @brief Sequential transmit in master I2C mode an amount of data in non-blocking mode with Interrupt. |
| * @note This interface allow to manage repeated start condition when a direction change during transfer |
| * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains |
| * the configuration information for the specified I2C. |
| * @param DevAddress Target device address: The device 7 bits address value |
| * in datasheet must be shifted to the left before calling the interface |
| * @param pData Pointer to data buffer |
| * @param Size Amount of data to be sent |
| * @param XferOptions Options of Transfer, value of @ref I2C_XFEROPTIONS |
| * @retval HAL status |
| */ |
| HAL_StatusTypeDef HAL_I2C_Master_Seq_Transmit_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size, uint32_t XferOptions) |
| { |
| uint32_t xfermode; |
| uint32_t xferrequest = I2C_GENERATE_START_WRITE; |
| |
| /* Check the parameters */ |
| assert_param(IS_I2C_TRANSFER_OPTIONS_REQUEST(XferOptions)); |
| |
| if (hi2c->State == HAL_I2C_STATE_READY) |
| { |
| /* Process Locked */ |
| __HAL_LOCK(hi2c); |
| |
| hi2c->State = HAL_I2C_STATE_BUSY_TX; |
| hi2c->Mode = HAL_I2C_MODE_MASTER; |
| hi2c->ErrorCode = HAL_I2C_ERROR_NONE; |
| |
| /* Prepare transfer parameters */ |
| hi2c->pBuffPtr = pData; |
| hi2c->XferCount = Size; |
| hi2c->XferOptions = XferOptions; |
| hi2c->XferISR = I2C_Master_ISR_IT; |
| |
| /* If hi2c->XferCount > MAX_NBYTE_SIZE, use reload mode */ |
| if (hi2c->XferCount > MAX_NBYTE_SIZE) |
| { |
| hi2c->XferSize = MAX_NBYTE_SIZE; |
| xfermode = I2C_RELOAD_MODE; |
| } |
| else |
| { |
| hi2c->XferSize = hi2c->XferCount; |
| xfermode = hi2c->XferOptions; |
| } |
| |
| /* If transfer direction not change and there is no request to start another frame, do not generate Restart Condition */ |
| /* Mean Previous state is same as current state */ |
| if ((hi2c->PreviousState == I2C_STATE_MASTER_BUSY_TX) && (IS_I2C_TRANSFER_OTHER_OPTIONS_REQUEST(XferOptions) == 0)) |
| { |
| xferrequest = I2C_NO_STARTSTOP; |
| } |
| else |
| { |
| /* Convert OTHER_xxx XferOptions if any */ |
| I2C_ConvertOtherXferOptions(hi2c); |
| |
| /* Update xfermode accordingly if no reload is necessary */ |
| if (hi2c->XferCount < MAX_NBYTE_SIZE) |
| { |
| xfermode = hi2c->XferOptions; |
| } |
| } |
| |
| /* Send Slave Address and set NBYTES to write */ |
| I2C_TransferConfig(hi2c, DevAddress, (uint8_t)hi2c->XferSize, xfermode, xferrequest); |
| |
| /* Process Unlocked */ |
| __HAL_UNLOCK(hi2c); |
| |
| /* Note : The I2C interrupts must be enabled after unlocking current process |
| to avoid the risk of I2C interrupt handle execution before current |
| process unlock */ |
| I2C_Enable_IRQ(hi2c, I2C_XFER_TX_IT); |
| |
| return HAL_OK; |
| } |
| else |
| { |
| return HAL_BUSY; |
| } |
| } |
| |
| /** |
| * @brief Sequential transmit in master I2C mode an amount of data in non-blocking mode with DMA. |
| * @note This interface allow to manage repeated start condition when a direction change during transfer |
| * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains |
| * the configuration information for the specified I2C. |
| * @param DevAddress Target device address: The device 7 bits address value |
| * in datasheet must be shifted to the left before calling the interface |
| * @param pData Pointer to data buffer |
| * @param Size Amount of data to be sent |
| * @param XferOptions Options of Transfer, value of @ref I2C_XFEROPTIONS |
| * @retval HAL status |
| */ |
| HAL_StatusTypeDef HAL_I2C_Master_Seq_Transmit_DMA(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size, uint32_t XferOptions) |
| { |
| uint32_t xfermode; |
| uint32_t xferrequest = I2C_GENERATE_START_WRITE; |
| HAL_StatusTypeDef dmaxferstatus; |
| |
| /* Check the parameters */ |
| assert_param(IS_I2C_TRANSFER_OPTIONS_REQUEST(XferOptions)); |
| |
| if (hi2c->State == HAL_I2C_STATE_READY) |
| { |
| /* Process Locked */ |
| __HAL_LOCK(hi2c); |
| |
| hi2c->State = HAL_I2C_STATE_BUSY_TX; |
| hi2c->Mode = HAL_I2C_MODE_MASTER; |
| hi2c->ErrorCode = HAL_I2C_ERROR_NONE; |
| |
| /* Prepare transfer parameters */ |
| hi2c->pBuffPtr = pData; |
| hi2c->XferCount = Size; |
| hi2c->XferOptions = XferOptions; |
| hi2c->XferISR = I2C_Master_ISR_DMA; |
| |
| /* If hi2c->XferCount > MAX_NBYTE_SIZE, use reload mode */ |
| if (hi2c->XferCount > MAX_NBYTE_SIZE) |
| { |
| hi2c->XferSize = MAX_NBYTE_SIZE; |
| xfermode = I2C_RELOAD_MODE; |
| } |
| else |
| { |
| hi2c->XferSize = hi2c->XferCount; |
| xfermode = hi2c->XferOptions; |
| } |
| |
| /* If transfer direction not change and there is no request to start another frame, do not generate Restart Condition */ |
| /* Mean Previous state is same as current state */ |
| if ((hi2c->PreviousState == I2C_STATE_MASTER_BUSY_TX) && (IS_I2C_TRANSFER_OTHER_OPTIONS_REQUEST(XferOptions) == 0)) |
| { |
| xferrequest = I2C_NO_STARTSTOP; |
| } |
| else |
| { |
| /* Convert OTHER_xxx XferOptions if any */ |
| I2C_ConvertOtherXferOptions(hi2c); |
| |
| /* Update xfermode accordingly if no reload is necessary */ |
| if (hi2c->XferCount < MAX_NBYTE_SIZE) |
| { |
| xfermode = hi2c->XferOptions; |
| } |
| } |
| |
| if (hi2c->XferSize > 0U) |
| { |
| if (hi2c->hdmatx != NULL) |
| { |
| /* Set the I2C DMA transfer complete callback */ |
| hi2c->hdmatx->XferCpltCallback = I2C_DMAMasterTransmitCplt; |
| |
| /* Set the DMA error callback */ |
| hi2c->hdmatx->XferErrorCallback = I2C_DMAError; |
| |
| /* Set the unused DMA callbacks to NULL */ |
| hi2c->hdmatx->XferHalfCpltCallback = NULL; |
| hi2c->hdmatx->XferAbortCallback = NULL; |
| |
| /* Enable the DMA channel */ |
| dmaxferstatus = HAL_DMA_Start_IT(hi2c->hdmatx, (uint32_t)pData, (uint32_t)&hi2c->Instance->TXDR, hi2c->XferSize); |
| } |
| else |
| { |
| /* Update I2C state */ |
| hi2c->State = HAL_I2C_STATE_READY; |
| hi2c->Mode = HAL_I2C_MODE_NONE; |
| |
| /* Update I2C error code */ |
| hi2c->ErrorCode |= HAL_I2C_ERROR_DMA_PARAM; |
| |
| /* Process Unlocked */ |
| __HAL_UNLOCK(hi2c); |
| |
| return HAL_ERROR; |
| } |
| |
| if (dmaxferstatus == HAL_OK) |
| { |
| /* Send Slave Address and set NBYTES to write */ |
| I2C_TransferConfig(hi2c, DevAddress, (uint8_t)hi2c->XferSize, xfermode, xferrequest); |
| |
| /* Update XferCount value */ |
| hi2c->XferCount -= hi2c->XferSize; |
| |
| /* Process Unlocked */ |
| __HAL_UNLOCK(hi2c); |
| |
| /* Note : The I2C interrupts must be enabled after unlocking current process |
| to avoid the risk of I2C interrupt handle execution before current |
| process unlock */ |
| /* Enable ERR and NACK interrupts */ |
| I2C_Enable_IRQ(hi2c, I2C_XFER_ERROR_IT); |
| |
| /* Enable DMA Request */ |
| hi2c->Instance->CR1 |= I2C_CR1_TXDMAEN; |
| } |
| else |
| { |
| /* Update I2C state */ |
| hi2c->State = HAL_I2C_STATE_READY; |
| hi2c->Mode = HAL_I2C_MODE_NONE; |
| |
| /* Update I2C error code */ |
| hi2c->ErrorCode |= HAL_I2C_ERROR_DMA; |
| |
| /* Process Unlocked */ |
| __HAL_UNLOCK(hi2c); |
| |
| return HAL_ERROR; |
| } |
| } |
| else |
| { |
| /* Update Transfer ISR function pointer */ |
| hi2c->XferISR = I2C_Master_ISR_IT; |
| |
| /* Send Slave Address */ |
| /* Set NBYTES to write and generate START condition */ |
| I2C_TransferConfig(hi2c, DevAddress, |
