Eric Lewiston
Hal Drivers for L4
Dependents: BSP OneHopeOnePrayer FINAL_AUDIO_RECORD AudioDemo
Fork of
STM32L4xx_HAL_Driver
by 
Senior Design: Sound Monitor
Diff: Src/stm32l4xx_hal_swpmi.c
- Revision:
- 0:80ee8f3b695e
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/Src/stm32l4xx_hal_swpmi.c Mon Nov 02 19:37:23 2015 +0000
@@ -0,0 +1,1407 @@
+/**
+ ******************************************************************************
+ * @file stm32l4xx_hal_swpmi.c
+ * @author MCD Application Team
+ * @version V1.1.0
+ * @date 16-September-2015
+ * @brief SWPMI HAL module driver.
+ * This file provides firmware functions to manage the following
+ * functionalities of the Single Wire Protocol Master Interface (SWPMI).
+ * + Initialization and Configuration
+ * + Data transfers functions
+ * + DMA transfers management
+ * + Interrupts and flags management
+ @verbatim
+ ===============================================================================
+ ##### How to use this driver #####
+ ===============================================================================
+ [..]
+ The SWPMI HAL driver can be used as follows:
+
+ (#) Declare a SWPMI_HandleTypeDef handle structure (eg. SWPMI_HandleTypeDef hswpmi).
+
+ (#) Initialize the SWPMI low level resources by implementing the HAL_SWPMI_MspInit() API:
+ (##) Enable the SWPMIx interface clock with __HAL_RCC_SWPMIx_CLK_ENABLE().
+ (##) SWPMI IO configuration:
+ (+++) Enable the clock for the SWPMI GPIO.
+ (+++) Configure these SWPMI pins as alternate function pull-up.
+ (##) NVIC configuration if you need to use interrupt process (HAL_SWPMI_Transmit_IT()
+ and HAL_SWPMI_Receive_IT() APIs):
+ (+++) Configure the SWPMIx interrupt priority with HAL_NVIC_SetPriority().
+ (+++) Enable the NVIC SWPMI IRQ handle with HAL_NVIC_EnableIRQ().
+
+ (##) DMA Configuration if you need to use DMA process (HAL_SWPMI_Transmit_DMA()
+ and HAL_SWPMI_Receive_DMA() APIs):
+ (+++) Declare a DMA handle structure for the Tx/Rx channels.
+ (+++) Enable the DMAx interface clock.
+ (+++) Configure the declared DMA handle structure with the required
+ Tx/Rx parameters.
+ (+++) Configure the DMA Tx/Rx channels and requests.
+ (+++) Associate the initialized DMA handle to the SWPMI DMA Tx/Rx handle.
+ (+++) Configure the priority and enable the NVIC for the transfer complete
+ interrupt on the DMA Tx/Rx channels.
+
+ (#) Program the Bite Rate, Tx Buffering mode, Rx Buffering mode in the Init structure.
+
+ (#) Enable the SWPMI peripheral by calling the HAL_SWPMI_Init() function.
+
+ @endverbatim
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>© COPYRIGHT(c) 2015 STMicroelectronics</center></h2>
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3. Neither the name of STMicroelectronics nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ ******************************************************************************
+ */
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32l4xx_hal.h"
+
+/** @addtogroup STM32L4xx_HAL_Driver
+ * @{
+ */
+
+/** @defgroup SWPMI SWPMI
+ * @brief HAL SWPMI module driver
+ * @{
+ */
+#ifdef HAL_SWPMI_MODULE_ENABLED
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+/* Private constants ---------------------------------------------------------*/
+/** @addtogroup SWPMI_Private_Constants SWPMI Private Constants
+ * @{
+ */
+#define SWPMI_TIMEOUT_VALUE ((uint32_t) 22000)
+
+/**
+ * @}
+ */
+
+/* Private macros ------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+/* Private function prototypes -----------------------------------------------*/
+static void SWPMI_DMATransmitCplt(DMA_HandleTypeDef *hdma);
+static void SWPMI_DMATxHalfCplt(DMA_HandleTypeDef *hdma);
+static void SWPMI_DMAReceiveCplt(DMA_HandleTypeDef *hdma);
+static void SWPMI_DMARxHalfCplt(DMA_HandleTypeDef *hdma);
+static void SWPMI_DMAError(DMA_HandleTypeDef *hdma);
+static HAL_StatusTypeDef SWPMI_Transmit_IT(SWPMI_HandleTypeDef *hswpmi);
+static HAL_StatusTypeDef SWPMI_EndTransmit_IT(SWPMI_HandleTypeDef *hswpmi);
+static HAL_StatusTypeDef SWPMI_Receive_IT(SWPMI_HandleTypeDef *hswpmi);
+static HAL_StatusTypeDef SWPMI_EndReceive_IT(SWPMI_HandleTypeDef *hswpmi);
+static HAL_StatusTypeDef SWPMI_EndTransmitReceive_IT(SWPMI_HandleTypeDef *hswpmi);
+static HAL_StatusTypeDef SWPMI_WaitOnFlagSetUntilTimeout(SWPMI_HandleTypeDef *hswpmi, uint32_t Flag, uint32_t Timeout);
+
+/* Exported functions --------------------------------------------------------*/
+
+/** @defgroup SWPMI_Exported_Functions SWPMI Exported Functions
+ * @{
+ */
+
+/** @defgroup SWPMI_Exported_Group1 Initialization/de-initialization methods
+ * @brief Initialization and Configuration functions
+ *
+@verbatim
+ ===============================================================================
+ ##### Initialization and Configuration functions #####
+ ===============================================================================
+ [..] This section provides functions allowing to:
+ (+) Initialize and configure the SWPMI peripheral.
+ (+) De-initialize the SWPMI peripheral.
+
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Initialize the SWPMI peripheral according to the specified parameters in the SWPMI_InitTypeDef.
+ * @param hswpmi: SWPMI handle
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_SWPMI_Init(SWPMI_HandleTypeDef *hswpmi)
+{
+ HAL_StatusTypeDef status = HAL_OK;
+
+ /* Check the SWPMI handle allocation */
+ if(hswpmi == NULL)
+ {
+ status = HAL_ERROR;
+ }
+ else
+ {
+ /* Check the parameters */
+ assert_param(IS_SWPMI_VOLTAGE_CLASS(hswpmi->Init.VoltageClass));
+ assert_param(IS_SWPMI_BITRATE_VALUE(hswpmi->Init.BitRate));
+ assert_param(IS_SWPMI_TX_BUFFERING_MODE(hswpmi->Init.TxBufferingMode));
+ assert_param(IS_SWPMI_RX_BUFFERING_MODE(hswpmi->Init.RxBufferingMode));
+
+ if(hswpmi->State == HAL_SWPMI_STATE_RESET)
+ {
+ /* Allocate lock resource and initialize it */
+ hswpmi->Lock = HAL_UNLOCKED;
+
+ /* Init the low level hardware : GPIO, CLOCK, CORTEX */
+ HAL_SWPMI_MspInit(hswpmi);
+ }
+
+ hswpmi->State = HAL_SWPMI_STATE_BUSY;
+
+ /* Disable SWPMI interface */
+ CLEAR_BIT(hswpmi->Instance->CR, SWPMI_CR_SWPACT);
+
+ /* Clear all SWPMI interface flags */
+ WRITE_REG(hswpmi->Instance->ICR, 0x019F);
+
+ /* Apply Voltage class selection */
+ MODIFY_REG(hswpmi->Instance->OR, SWPMI_OR_CLASS, hswpmi->Init.VoltageClass);
+
+ /* Configure the BRR register (Bitrate) */
+ WRITE_REG(hswpmi->Instance->BRR, hswpmi->Init.BitRate);
+
+ /* Apply SWPMI CR configuration */
+ MODIFY_REG(hswpmi->Instance->CR, \
+ SWPMI_CR_RXDMA | SWPMI_CR_TXDMA | SWPMI_CR_RXMODE | SWPMI_CR_TXMODE, \
+ hswpmi->Init.TxBufferingMode | hswpmi->Init.RxBufferingMode);
+
+ hswpmi->ErrorCode = HAL_SWPMI_ERROR_NONE;
+ hswpmi->State = HAL_SWPMI_STATE_READY;
+
+ /* Enable SWPMI peripheral if not */
+ SET_BIT(hswpmi->Instance->CR, SWPMI_CR_SWPACT);
+ }
+
+ return status;
+}
+
+/**
+ * @brief De-initialize the SWPMI peripheral.
+ * @param hswpmi: SWPMI handle
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_SWPMI_DeInit(SWPMI_HandleTypeDef *hswpmi)
+{
+ HAL_StatusTypeDef status = HAL_OK;
+
+ /* Check the SWPMI handle allocation */
+ if(hswpmi == NULL)
+ {
+ status = HAL_ERROR;
+ }
+ else
+ {
+ /* Check the parameters */
+ assert_param(IS_SWPMI_INSTANCE(hswpmi->Instance));
+
+ hswpmi->State = HAL_SWPMI_STATE_BUSY;
+
+ /* Disable SWPMI interface */
+ CLEAR_BIT(hswpmi->Instance->CR, SWPMI_CR_SWPACT);
+
+ /* DeInit the low level hardware */
+ HAL_SWPMI_MspDeInit(hswpmi);
+
+ hswpmi->ErrorCode = HAL_SWPMI_ERROR_NONE;
+
+ hswpmi->State = HAL_SWPMI_STATE_RESET;
+
+ /* Release Lock */
+ __HAL_UNLOCK(hswpmi);
+ }
+
+ return status;
+}
+
+/**
+ * @brief Initialize the SWPMI MSP.
+ * @param hswpmi: SWPMI handle
+ * @retval None
+ */
+ __weak void HAL_SWPMI_MspInit(SWPMI_HandleTypeDef *hswpmi)
+{
+ /* NOTE : This function should not be modified, when the callback is needed,
+ the HAL_SWPMI_MspInit can be implemented in the user file
+ */
+}
+
+/**
+ * @brief DeInitialize the SWPMI MSP.
+ * @param hswpmi: SWPMI handle
+ * @retval None
+ */
+ __weak void HAL_SWPMI_MspDeInit(SWPMI_HandleTypeDef *hswpmi)
+{
+ /* NOTE : This function should not be modified, when the callback is needed,
+ the HAL_SWPMI_MspDeInit can be implemented in the user file
+ */
+}
+
+/**
+ * @}
+ */
+
+/** @defgroup SWPMI_Exported_Group2 IO operation methods
+ * @brief SWPMI Transmit/Receive functions
+ *
+@verbatim
+ ===============================================================================
+ ##### IO operation methods #####
+ ===============================================================================
+ [..]
+ This subsection provides a set of functions allowing to manage the SWPMI
+ data transfers.
+
+ (#) There are two modes of transfer:
+ (++) Blocking mode: The communication is performed in polling mode.
+ The HAL status of all data processing is returned by the same function
+ after finishing transfer.
+ (++) Non-Blocking mode: The communication is performed using Interrupts
+ or DMA. The end of the data processing will be indicated through the
+ dedicated SWPMI Interrupt handler (HAL_SWPMI_IRQHandler()) when using Interrupt mode or
+ the selected DMA channel interrupt handler when using DMA mode.
+ The HAL_SWPMI_TxCpltCallback(), HAL_SWPMI_RxCpltCallback() user callbacks
+ will be executed respectively at the end of the transmit or receive process.
+ The HAL_SWPMI_ErrorCallback() user callback will be executed when a communication error is detected.
+
+ (#) Blocking mode API's are:
+ (++) HAL_SWPMI_Transmit()
+ (++) HAL_SWPMI_Receive()
+
+ (#) Non-Blocking mode API's with Interrupt are:
+ (++) HAL_SWPMI_Transmit_IT()
+ (++) HAL_SWPMI_Receive_IT()
+ (++) HAL_SWPMI_IRQHandler()
+
+ (#) Non-Blocking mode API's with DMA are:
+ (++) HAL_SWPMI_Transmit_DMA()
+ (++) HAL_SWPMI_Receive_DMA()
+ (++) HAL_SWPMI_DMAPause()
+ (++) HAL_SWPMI_DMAResume()
+ (++) HAL_SWPMI_DMAStop()
+
+ (#) A set of Transfer Complete Callbacks are provided in Non-Blocking mode:
+ (++) HAL_SWPMI_TxHalfCpltCallback()
+ (++) HAL_SWPMI_TxCpltCallback()
+ (++) HAL_SWPMI_RxHalfCpltCallback()
+ (++) HAL_SWPMI_RxCpltCallback()
+ (++) HAL_SWPMI_ErrorCallback()
+
+ (#) The capability to launch the above IO operations in loopback mode for
+ user application verification:
+ (++) HAL_SWPMI_EnableLoopback()
+ (++) HAL_SWPMI_DisableLoopback()
+
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Transmit an amount of data in blocking mode.
+ * @param hswpmi: pointer to a SWPMI_HandleTypeDef structure that contains
+ * the configuration information for SWPMI module.
+ * @param pData: Pointer to data buffer
+ * @param Size: Amount of data to be sent
+ * @param Timeout: Timeout duration
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_SWPMI_Transmit(SWPMI_HandleTypeDef *hswpmi, uint32_t* pData, uint16_t Size, uint32_t Timeout)
+{
+ uint32_t tickstart = HAL_GetTick();
+ HAL_StatusTypeDef status = HAL_OK;
+
+ if((pData == NULL ) || (Size == 0))
+ {
+ status = HAL_ERROR;
+ }
+ else
+ {
+ /* Process Locked */
+ __HAL_LOCK(hswpmi);
+
+ if((hswpmi->State == HAL_SWPMI_STATE_READY) || (hswpmi->State == HAL_SWPMI_STATE_BUSY_RX))
+ {
+ /* Check if a non-blocking receive process is ongoing or not */
+ if(hswpmi->State == HAL_SWPMI_STATE_READY)
+ {
+ hswpmi->State = HAL_SWPMI_STATE_BUSY_TX;
+
+ /* Disable any transmitter interrupts */
+ __HAL_SWPMI_DISABLE_IT(hswpmi, SWPMI_IT_TCIE | SWPMI_IT_TIE | SWPMI_IT_TXUNRIE | SWPMI_IT_TXBEIE);
+
+ /* Disable any transmitter flags */
+ __HAL_SWPMI_CLEAR_FLAG(hswpmi, SWPMI_FLAG_TXBEF | SWPMI_FLAG_TXUNRF | SWPMI_FLAG_TCF);
+
+ /* Enable SWPMI peripheral if not */
+ SET_BIT(hswpmi->Instance->CR, SWPMI_CR_SWPACT);
+ }
+ else
+ {
+ hswpmi->State = HAL_SWPMI_STATE_BUSY_TX_RX;
+ }
+
+ do
+ {
+ /* Wait the TXE to write data */
+ if(HAL_IS_BIT_SET(hswpmi->Instance->ISR, SWPMI_FLAG_TXE))
+ {
+ hswpmi->Instance->TDR = (*pData++);
+ Size--;
+ }
+ else
+ {
+ /* Check for the Timeout */
+ if(Timeout != HAL_MAX_DELAY)
+ {
+ if((Timeout == 0) || ((HAL_GetTick() - tickstart) > Timeout))
+ {
+ status = HAL_TIMEOUT;
+ break;
+ }
+ }
+ }
+ } while(Size != 0);
+
+ /* Wait on TXBEF flag to be able to start a second transfer */
+ if(SWPMI_WaitOnFlagSetUntilTimeout(hswpmi, SWPMI_FLAG_TXBEF, Timeout) != HAL_OK)
+ {
+ status = HAL_TIMEOUT;
+ }
+
+ if(status == HAL_OK)
+ {
+ /* Check if a non-blocking receive Process is ongoing or not */
+ if(hswpmi->State == HAL_SWPMI_STATE_BUSY_TX_RX)
+ {
+ hswpmi->State = HAL_SWPMI_STATE_BUSY_RX;
+ }
+ else
+ {
+ hswpmi->State = HAL_SWPMI_STATE_READY;
+ }
+ }
+ }
+ else
+ {
+ status = HAL_BUSY;
+ }
+ }
+
+ if((status != HAL_OK) && (status != HAL_BUSY))
+ {
+ hswpmi->State = HAL_SWPMI_STATE_READY;
+ }
+ /* Process Unlocked */
+ __HAL_UNLOCK(hswpmi);
+
+ return status;
+}
+
+/**
+ * @brief Receive an amount of data in blocking mode.
+ * @param hswpmi: pointer to a SWPMI_HandleTypeDef structure that contains
+ * the configuration information for SWPMI module.
+ * @param pData: Pointer to data buffer
+ * @param Size: Amount of data to be received
+ * @param Timeout: Timeout duration
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_SWPMI_Receive(SWPMI_HandleTypeDef *hswpmi, uint32_t *pData, uint16_t Size, uint32_t Timeout)
+{
+ uint32_t tickstart = HAL_GetTick();
+ HAL_StatusTypeDef status = HAL_OK;
+
+ if((pData == NULL ) || (Size == 0))
+ {
+ status = HAL_ERROR;
+ }
+ else
+ {
+ /* Process Locked */
+ __HAL_LOCK(hswpmi);
+
+ if((hswpmi->State == HAL_SWPMI_STATE_READY) || (hswpmi->State == HAL_SWPMI_STATE_BUSY_TX))
+ {
+ /* Check if a non-blocking transmit process is ongoing or not */
+ if(hswpmi->State == HAL_SWPMI_STATE_READY)
+ {
+ hswpmi->State = HAL_SWPMI_STATE_BUSY_RX;
+
+ /* Disable any receiver interrupts */
+ CLEAR_BIT(hswpmi->Instance->IER, SWPMI_IT_SRIE | SWPMI_IT_RIE | SWPMI_IT_RXBERIE | SWPMI_IT_RXOVRIE | SWPMI_IT_RXBFIE);
+
+ /* Enable SWPMI peripheral if not */
+ SET_BIT(hswpmi->Instance->CR, SWPMI_CR_SWPACT);
+ }
+ else
+ {
+ hswpmi->State = HAL_SWPMI_STATE_BUSY_TX_RX;
+ }
+
+ do
+ {
+ /* Wait the RXNE to read data */
+ if(HAL_IS_BIT_SET(hswpmi->Instance->ISR, SWPMI_FLAG_RXNE))
+ {
+ (*pData++) = hswpmi->Instance->RDR;
+ Size--;
+ }
+ else
+ {
+ /* Check for the Timeout */
+ if(Timeout != HAL_MAX_DELAY)
+ {
+ if((Timeout == 0) || ((HAL_GetTick() - tickstart) > Timeout))
+ {
+ status = HAL_TIMEOUT;
+ break;
+ }
+ }
+ }
+ } while(Size != 0);
+
+ if(status == HAL_OK)
+ {
+ if(HAL_IS_BIT_SET(hswpmi->Instance->ISR, SWPMI_FLAG_RXBFF))
+ {
+ /* Clear RXBFF at end of reception */
+ WRITE_REG(hswpmi->Instance->ICR, SWPMI_FLAG_RXBFF);
+ }
+
+ /* Check if a non-blocking transmit Process is ongoing or not */
+ if(hswpmi->State == HAL_SWPMI_STATE_BUSY_TX_RX)
+ {
+ hswpmi->State = HAL_SWPMI_STATE_BUSY_TX;
+ }
+ else
+ {
+ hswpmi->State = HAL_SWPMI_STATE_READY;
+ }
+ }
+ }
+ else
+ {
+ status = HAL_BUSY;
+ }
+ }
+
+ if((status != HAL_OK) && (status != HAL_BUSY))
+ {
+ hswpmi->State = HAL_SWPMI_STATE_READY;
+ }
+ /* Process Unlocked */
+ __HAL_UNLOCK(hswpmi);
+
+ return status;
+}
+
+/**
+ * @brief Transmit an amount of data in non-blocking mode with interrupt.
+ * @param hswpmi: pointer to a SWPMI_HandleTypeDef structure that contains
+ * the configuration information for SWPMI module.
+ * @param pData: Pointer to data buffer
+ * @param Size: Amount of data to be sent
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_SWPMI_Transmit_IT(SWPMI_HandleTypeDef *hswpmi, uint32_t *pData, uint16_t Size)
+{
+ HAL_StatusTypeDef status = HAL_OK;
+
+ if((pData == NULL ) || (Size == 0))
+ {
+ status = HAL_ERROR;
+ }
+ else
+ {
+ /* Process Locked */
+ __HAL_LOCK(hswpmi);
+
+ if((hswpmi->State == HAL_SWPMI_STATE_READY) || (hswpmi->State == HAL_SWPMI_STATE_BUSY_RX))
+ {
+ /* Update handle */
+ hswpmi->pTxBuffPtr = pData;
+ hswpmi->TxXferSize = Size;
+ hswpmi->TxXferCount = Size;
+ hswpmi->ErrorCode = HAL_SWPMI_ERROR_NONE;
+
+ /* Check if a receive process is ongoing or not */
+ if(hswpmi->State == HAL_SWPMI_STATE_READY)
+ {
+ hswpmi->State = HAL_SWPMI_STATE_BUSY_TX;
+
+ /* Enable SWPMI peripheral if not */
+ SET_BIT(hswpmi->Instance->CR, SWPMI_CR_SWPACT);
+ }
+ else
+ {
+ hswpmi->State = HAL_SWPMI_STATE_BUSY_TX_RX;
+ }
+
+ /* Enable the SWPMI transmit underrun error */
+ __HAL_SWPMI_ENABLE_IT(hswpmi, SWPMI_IT_TXUNRIE);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hswpmi);
+
+ /* Enable the SWPMI interrupts: */
+ /* - Transmit data register empty */
+ /* - Transmit buffer empty */
+ /* - Transmit/Reception completion */
+ __HAL_SWPMI_ENABLE_IT(hswpmi, SWPMI_IT_TIE | SWPMI_IT_TXBEIE | SWPMI_IT_TCIE);
+ }
+ else
+ {
+ status = HAL_BUSY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hswpmi);
+ }
+ }
+
+ return status;
+}
+
+/**
+ * @brief Receive an amount of data in non-blocking mode with interrupt.
+ * @param hswpmi: SWPMI handle
+ * @param pData: pointer to data buffer
+ * @param Size: amount of data to be received
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_SWPMI_Receive_IT(SWPMI_HandleTypeDef *hswpmi, uint32_t *pData, uint16_t Size)
+{
+ HAL_StatusTypeDef status = HAL_OK;
+
+ if((pData == NULL ) || (Size == 0))
+ {
+ status = HAL_ERROR;
+ }
+ else
+ {
+ /* Process Locked */
+ __HAL_LOCK(hswpmi);
+
+ if((hswpmi->State == HAL_SWPMI_STATE_READY) || (hswpmi->State == HAL_SWPMI_STATE_BUSY_TX))
+ {
+ /* Update handle */
+ hswpmi->pRxBuffPtr = pData;
+ hswpmi->RxXferSize = Size;
+ hswpmi->RxXferCount = Size;
+ hswpmi->ErrorCode = HAL_SWPMI_ERROR_NONE;
+
+ /* Check if a transmit process is ongoing or not */
+ if(hswpmi->State == HAL_SWPMI_STATE_READY)
+ {
+ hswpmi->State = HAL_SWPMI_STATE_BUSY_RX;
+
+ /* Enable SWPMI peripheral if not */
+ SET_BIT(hswpmi->Instance->CR, SWPMI_CR_SWPACT);
+ }
+ else
+ {
+ hswpmi->State = HAL_SWPMI_STATE_BUSY_TX_RX;
+ }
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hswpmi);
+
+ /* Enable the SWPMI slave resume */
+ /* Enable the SWPMI Data Register not empty Interrupt, receive CRC Error, receive overrun and RxBuf Interrupt */
+ /* Enable the SWPMI Transmit/Reception completion */
+ __HAL_SWPMI_ENABLE_IT(hswpmi, SWPMI_IT_RIE | SWPMI_IT_RXBERIE | SWPMI_IT_RXOVRIE | SWPMI_IT_RXBFIE);
+ }
+ else
+ {
+ status = HAL_BUSY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hswpmi);
+ }
+ }
+
+ return status;
+}
+
+/**
+ * @brief Transmit an amount of data in non-blocking mode with DMA interrupt.
+ * @param hswpmi: SWPMI handle
+ * @param pData: pointer to data buffer
+ * @param Size: amount of data to be sent
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_SWPMI_Transmit_DMA(SWPMI_HandleTypeDef *hswpmi, uint32_t *pData, uint16_t Size)
+{
+ HAL_StatusTypeDef status = HAL_OK;
+
+ if((pData == NULL ) || (Size == 0))
+ {
+ status = HAL_ERROR;
+ }
+ else
+ {
+ /* Process Locked */
+ __HAL_LOCK(hswpmi);
+
+ if((hswpmi->State == HAL_SWPMI_STATE_READY) || (hswpmi->State == HAL_SWPMI_STATE_BUSY_RX))
+ {
+ /* Update handle */
+ hswpmi->pTxBuffPtr = pData;
+ hswpmi->TxXferSize = Size;
+ hswpmi->TxXferCount = Size;
+ hswpmi->ErrorCode = HAL_SWPMI_ERROR_NONE;
+
+ /* Check if a receive process is ongoing or not */
+ if(hswpmi->State == HAL_SWPMI_STATE_READY)
+ {
+ hswpmi->State = HAL_SWPMI_STATE_BUSY_TX;
+
+ /* Enable SWPMI peripheral if not */
+ SET_BIT(hswpmi->Instance->CR, SWPMI_CR_SWPACT);
+ }
+ else
+ {
+ hswpmi->State = HAL_SWPMI_STATE_BUSY_TX_RX;
+ }
+
+ /* Set the SWPMI DMA transfer complete callback */
+ hswpmi->hdmatx->XferCpltCallback = SWPMI_DMATransmitCplt;
+
+ /* Set the SWPMI DMA Half transfer complete callback */
+ hswpmi->hdmatx->XferHalfCpltCallback = SWPMI_DMATxHalfCplt;
+
+ /* Set the DMA error callback */
+ hswpmi->hdmatx->XferErrorCallback = SWPMI_DMAError;
+
+ /* Enable the SWPMI transmit DMA Stream */
+ HAL_DMA_Start_IT(hswpmi->hdmatx, (uint32_t)hswpmi->pTxBuffPtr, (uint32_t)&hswpmi->Instance->TDR, Size);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hswpmi);
+
+ /* Enable the DMA transfer for transmit request by setting the TXDMA bit
+ in the SWPMI CR register */
+ SET_BIT(hswpmi->Instance->CR, SWPMI_CR_TXDMA);
+ }
+ else
+ {
+ status = HAL_BUSY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hswpmi);
+ }
+ }
+
+ return status;
+}
+
+/**
+ * @brief Receive an amount of data in non-blocking mode with DMA interrupt.
+ * @param hswpmi: SWPMI handle
+ * @param pData: pointer to data buffer
+ * @param Size: amount of data to be received
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_SWPMI_Receive_DMA(SWPMI_HandleTypeDef *hswpmi, uint32_t *pData, uint16_t Size)
+{
+ HAL_StatusTypeDef status = HAL_OK;
+
+ if((pData == NULL ) || (Size == 0))
+ {
+ status = HAL_ERROR;
+ }
+ else
+ {
+ /* Process Locked */
+ __HAL_LOCK(hswpmi);
+
+ if((hswpmi->State == HAL_SWPMI_STATE_READY) || (hswpmi->State == HAL_SWPMI_STATE_BUSY_TX))
+ {
+ /* Update handle */
+ hswpmi->pRxBuffPtr = pData;
+ hswpmi->RxXferSize = Size;
+ hswpmi->ErrorCode = HAL_SWPMI_ERROR_NONE;
+
+ /* Check if a transmit process is ongoing or not */
+ if(hswpmi->State == HAL_SWPMI_STATE_READY)
+ {
+ hswpmi->State = HAL_SWPMI_STATE_BUSY_RX;
+
+ /* Enable SWPMI peripheral if not */
+ SET_BIT(hswpmi->Instance->CR, SWPMI_CR_SWPACT);
+ }
+ else
+ {
+ hswpmi->State = HAL_SWPMI_STATE_BUSY_TX_RX;
+ }
+
+ /* Set the SWPMI DMA transfer complete callback */
+ hswpmi->hdmarx->XferCpltCallback = SWPMI_DMAReceiveCplt;
+
+ /* Set the SWPMI DMA Half transfer complete callback */
+ hswpmi->hdmarx->XferHalfCpltCallback = SWPMI_DMARxHalfCplt;
+
+ /* Set the DMA error callback */
+ hswpmi->hdmarx->XferErrorCallback = SWPMI_DMAError;
+
+ /* Enable the DMA request */
+ HAL_DMA_Start_IT(hswpmi->hdmarx, (uint32_t)&hswpmi->Instance->RDR, (uint32_t)hswpmi->pRxBuffPtr, Size);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hswpmi);
+
+ /* Enable the DMA transfer for the receiver request by setting the RXDMA bit
+ in the SWPMI CR register */
+ SET_BIT(hswpmi->Instance->CR, SWPMI_CR_RXDMA);
+ }
+ else
+ {
+ status = HAL_BUSY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hswpmi);
+ }
+ }
+
+ return status;
+}
+
+/**
+ * @brief Stop all DMA transfers.
+ * @param hswpmi: SWPMI handle
+ * @retval HAL_OK
+ */
+HAL_StatusTypeDef HAL_SWPMI_DMAStop(SWPMI_HandleTypeDef *hswpmi)
+{
+ /* Process Locked */
+ __HAL_LOCK(hswpmi);
+
+ /* Disable the SWPMI Tx/Rx DMA requests */
+ CLEAR_BIT(hswpmi->Instance->CR, (SWPMI_CR_TXDMA | SWPMI_CR_RXDMA));
+
+ /* Abort the SWPMI DMA tx channel */
+ if(hswpmi->hdmatx != NULL)
+ {
+ HAL_DMA_Abort(hswpmi->hdmatx);
+ }
+ /* Abort the SWPMI DMA rx channel */
+ if(hswpmi->hdmarx != NULL)
+ {
+ HAL_DMA_Abort(hswpmi->hdmarx);
+ }
+
+ /* Disable SWPMI interface */
+ CLEAR_BIT(hswpmi->Instance->CR, SWPMI_CR_SWPACT);
+
+ hswpmi->State = HAL_SWPMI_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hswpmi);
+
+ return HAL_OK;
+}
+
+
+/**
+ * @brief Enable the Loopback mode.
+ * @param hswpmi: SWPMI handle
+ * @note Loopback mode is to be used only for test purposes
+ * @retval HAL_OK / HAL_BUSY
+ */
+HAL_StatusTypeDef HAL_SWPMI_EnableLoopback(SWPMI_HandleTypeDef *hswpmi)
+{
+ HAL_StatusTypeDef status = HAL_OK;
+
+ /* Process Locked */
+ __HAL_LOCK(hswpmi);
+
+ /* Check SWPMI not enabled */
+ if(READ_BIT(hswpmi->Instance->CR, SWPMI_CR_SWPACT) != RESET)
+ {
+ status = HAL_BUSY;
+ }
+ else
+ {
+ /* Set Loopback */
+ SET_BIT(hswpmi->Instance->CR, SWPMI_CR_LPBK);
+ }
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hswpmi);
+
+ return status;
+}
+
+/**
+ * @brief Disable the Loopback mode.
+ * @param hswpmi: SWPMI handle
+ * @note Loopback mode is to be used only for test purposes
+ * @retval HAL_OK / HAL_BUSY
+ */
+HAL_StatusTypeDef HAL_SWPMI_DisableLoopback(SWPMI_HandleTypeDef *hswpmi)
+{
+ HAL_StatusTypeDef status = HAL_OK;
+
+ /* Process Locked */
+ __HAL_LOCK(hswpmi);
+
+ /* Check SWPMI not enabled */
+ if(READ_BIT(hswpmi->Instance->CR, SWPMI_CR_SWPACT) != RESET)
+ {
+ status = HAL_BUSY;
+ }
+ else
+ {
+ /* Reset Loopback */
+ CLEAR_BIT(hswpmi->Instance->CR, SWPMI_CR_LPBK);
+ }
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hswpmi);
+
+ return status;
+}
+
+/**
+ * @}
+ */
+
+/** @defgroup SWPMI_Exported_Group3 SWPMI IRQ handler and callbacks
+ * @brief SWPMI IRQ handler.
+ *
+@verbatim
+ ==============================================================================
+ ##### SWPMI IRQ handler and callbacks #####
+ ==============================================================================
+[..] This section provides SWPMI IRQ handler and callback functions called within
+ the IRQ handler.
+
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Handle SWPMI interrupt request.
+ * @param hswpmi: SWPMI handle
+ * @retval None
+ */
+void HAL_SWPMI_IRQHandler(SWPMI_HandleTypeDef *hswpmi)
+{
+ uint32_t regisr = READ_REG(hswpmi->Instance->ISR);
+ uint32_t regier = READ_REG(hswpmi->Instance->IER);
+
+ /* SWPMI CRC error interrupt occurred --------------------------------------*/
+ if(((regisr & SWPMI_FLAG_RXBERF) != RESET) && ((regier & SWPMI_IT_RXBERIE) != RESET))
+ {
+ /* Disable Receive CRC interrupt */
+ CLEAR_BIT(hswpmi->Instance->IER, SWPMI_IT_RXBERIE | SWPMI_IT_RXBFIE);
+ /* Clear Receive CRC and Receive buffer full flag */
+ WRITE_REG(hswpmi->Instance->ICR, SWPMI_FLAG_RXBERF | SWPMI_FLAG_RXBFF);
+
+ hswpmi->ErrorCode |= HAL_SWPMI_ERROR_CRC;
+ }
+
+ /* SWPMI Over-Run interrupt occurred -----------------------------------------*/
+ if(((regisr & SWPMI_FLAG_RXOVRF) != RESET) && ((regier & SWPMI_IT_RXOVRIE) != RESET))
+ {
+ /* Disable Receive overrun interrupt */
+ CLEAR_BIT(hswpmi->Instance->IER, SWPMI_IT_RXOVRIE);
+ /* Clear Receive overrun flag */
+ WRITE_REG(hswpmi->Instance->ICR, SWPMI_FLAG_RXOVRF);
+
+ hswpmi->ErrorCode |= HAL_SWPMI_ERROR_OVR;
+ }
+
+ /* SWPMI Under-Run interrupt occurred -----------------------------------------*/
+ if(((regisr & SWPMI_FLAG_TXUNRF) != RESET) && ((regier & SWPMI_IT_TXUNRIE) != RESET))
+ {
+ /* Disable Transmit under run interrupt */
+ CLEAR_BIT(hswpmi->Instance->IER, SWPMI_IT_TXUNRIE);
+ /* Clear Transmit under run flag */
+ WRITE_REG(hswpmi->Instance->ICR, SWPMI_FLAG_TXUNRF);
+
+ hswpmi->ErrorCode |= HAL_SWPMI_ERROR_UDR;
+ }
+
+ /* Call SWPMI Error Call back function if need be --------------------------*/
+ if(hswpmi->ErrorCode != HAL_SWPMI_ERROR_NONE)
+ {
+ /* Set the SWPMI state ready to be able to start again the process */
+ hswpmi->State = HAL_SWPMI_STATE_READY;
+
+ HAL_SWPMI_ErrorCallback(hswpmi);
+ }
+
+ /* SWPMI in mode Receiver ---------------------------------------------------*/
+ if(((regisr & SWPMI_FLAG_RXNE) != RESET) && ((regier & SWPMI_IT_RIE) != RESET))
+ {
+ SWPMI_Receive_IT(hswpmi);
+ }
+
+ /* SWPMI in mode Transmitter ------------------------------------------------*/
+ if(((regisr & SWPMI_FLAG_TXE) != RESET) && ((regier & SWPMI_IT_TIE) != RESET))
+ {
+ SWPMI_Transmit_IT(hswpmi);
+ }
+
+ /* SWPMI in mode Transmitter (Transmit buffer empty) ------------------------*/
+ if(((regisr & SWPMI_FLAG_TXBEF) != RESET) && ((regier & SWPMI_IT_TXBEIE) != RESET))
+ {
+ SWPMI_EndTransmit_IT(hswpmi);
+ }
+
+ /* SWPMI in mode Receiver (Receive buffer full) -----------------------------*/
+ if(((regisr & SWPMI_FLAG_RXBFF) != RESET) && ((regier & SWPMI_IT_RXBFIE) != RESET))
+ {
+ SWPMI_EndReceive_IT(hswpmi);
+ }
+
+ /* Both Transmission and reception complete ---------------------------------*/
+ if(((regisr & SWPMI_FLAG_TCF) != RESET) && ((regier & SWPMI_IT_TCIE) != RESET))
+ {
+ SWPMI_EndTransmitReceive_IT(hswpmi);
+ }
+}
+
+/**
+ * @brief Tx Transfer completed callback.
+ * @param hswpmi: SWPMI handle
+ * @retval None
+ */
+ __weak void HAL_SWPMI_TxCpltCallback(SWPMI_HandleTypeDef *hswpmi)
+{
+ /* NOTE : This function should not be modified, when the callback is needed,
+ the HAL_SWPMI_TxCpltCallback is to be implemented in the user file
+ */
+}
+
+/**
+ * @brief Tx Half Transfer completed callback.
+ * @param hswpmi: SWPMI handle
+ * @retval None
+ */
+ __weak void HAL_SWPMI_TxHalfCpltCallback(SWPMI_HandleTypeDef *hswpmi)
+{
+ /* NOTE: This function should not be modified, when the callback is needed,
+ the HAL_SWPMI_TxHalfCpltCallback is to be implemented in the user file
+ */
+}
+
+/**
+ * @brief Rx Transfer completed callback.
+ * @param hswpmi: SWPMI handle
+ * @retval None
+ */
+__weak void HAL_SWPMI_RxCpltCallback(SWPMI_HandleTypeDef *hswpmi)
+{
+ /* NOTE : This function should not be modified, when the callback is needed,
+ the HAL_SWPMI_RxCpltCallback is to be implemented in the user file
+ */
+}
+
+/**
+ * @brief Rx Half Transfer completed callback.
+ * @param hswpmi: SWPMI handle
+ * @retval None
+ */
+__weak void HAL_SWPMI_RxHalfCpltCallback(SWPMI_HandleTypeDef *hswpmi)
+{
+ /* NOTE: This function should not be modified, when the callback is needed,
+ the HAL_SWPMI_RxHalfCpltCallback is to be implemented in the user file
+ */
+}
+
+/**
+ * @brief SWPMI error callback.
+ * @param hswpmi: SWPMI handle
+ * @retval None
+ */
+ __weak void HAL_SWPMI_ErrorCallback(SWPMI_HandleTypeDef *hswpmi)
+{
+ /* NOTE : This function should not be modified, when the callback is needed,
+ the HAL_SWPMI_ErrorCallback is to be implemented in the user file
+ */
+}
+
+/**
+ * @}
+ */
+
+/** @defgroup SWPMI_Exported_Group4 Peripheral Control methods
+ * @brief SWPMI control functions
+ *
+@verbatim
+ ===============================================================================
+ ##### Peripheral Control methods #####
+ ===============================================================================
+ [..]
+ This subsection provides a set of functions allowing to control the SWPMI.
+ (+) HAL_SWPMI_GetState() API is helpful to check in run-time the state of the SWPMI peripheral
+ (+) HAL_SWPMI_GetError() API is helpful to check in run-time the error state of the SWPMI peripheral
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Return the SWPMI handle state.
+ * @param hswpmi: SWPMI handle
+ * @retval HAL state
+ */
+HAL_SWPMI_StateTypeDef HAL_SWPMI_GetState(SWPMI_HandleTypeDef *hswpmi)
+{
+ /* Return SWPMI handle state */
+ return hswpmi->State;
+}
+
+/**
+* @brief Return the SWPMI error code.
+* @param hswpmi : pointer to a SWPMI_HandleTypeDef structure that contains
+ * the configuration information for the specified SWPMI.
+* @retval SWPMI Error Code
+*/
+uint32_t HAL_SWPMI_GetError(SWPMI_HandleTypeDef *hswpmi)
+{
+ return hswpmi->ErrorCode;
+}
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/* Private functions ---------------------------------------------------------*/
+
+/** @defgroup SWPMI_Private_Functions SWPMI Private Functions
+ * @{
+ */
+
+/**
+ * @brief Transmit an amount of data in interrupt mode.
+ * @note Function called under interruption only, once interruptions have been enabled by HAL_SWPMI_Transmit_IT()
+ * @param hswpmi: SWPMI handle
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef SWPMI_Transmit_IT(SWPMI_HandleTypeDef *hswpmi)
+{
+ HAL_StatusTypeDef status = HAL_OK;
+
+ if ((hswpmi->State == HAL_SWPMI_STATE_BUSY_TX) || (hswpmi->State == HAL_SWPMI_STATE_BUSY_TX_RX))
+ {
+ if(hswpmi->TxXferCount == 0)
+ {
+ /* Disable the SWPMI TXE and Underrun Interrupts */
+ CLEAR_BIT(hswpmi->Instance->IER, (SWPMI_IT_TIE | SWPMI_IT_TXUNRIE));
+ }
+ else
+ {
+ hswpmi->Instance->TDR = (uint32_t)(*hswpmi->pTxBuffPtr++);
+ hswpmi->TxXferCount--;
+ }
+ }
+ else
+ {
+ status = HAL_BUSY;
+ }
+
+ return status;
+}
+
+/**
+ * @brief Wraps up transmission in non-blocking mode.
+ * @param hswpmi: SWPMI handle
+ * @retval HAL status
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef SWPMI_EndTransmit_IT(SWPMI_HandleTypeDef *hswpmi)
+{
+ /* Clear the SWPMI Transmit buffer empty Flag */
+ WRITE_REG(hswpmi->Instance->ICR, SWPMI_FLAG_TXBEF);
+ /* Disable the all SWPMI Transmit Interrupts */
+ CLEAR_BIT(hswpmi->Instance->IER, SWPMI_IT_TIE | SWPMI_IT_TXUNRIE | SWPMI_IT_TXBEIE);
+
+ /* Check if a receive Process is ongoing or not */
+ if(hswpmi->State == HAL_SWPMI_STATE_BUSY_TX_RX)
+ {
+ hswpmi->State = HAL_SWPMI_STATE_BUSY_RX;
+ }
+ else
+ {
+ hswpmi->State = HAL_SWPMI_STATE_READY;
+ }
+
+ HAL_SWPMI_TxCpltCallback(hswpmi);
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Receive an amount of data in interrupt mode.
+ * @note Function called under interruption only, once interruptions have been enabled by HAL_SWPMI_Receive_IT()
+ * @param hswpmi: SWPMI handle
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef SWPMI_Receive_IT(SWPMI_HandleTypeDef *hswpmi)
+{
+ HAL_StatusTypeDef status = HAL_OK;
+
+ if((hswpmi->State == HAL_SWPMI_STATE_BUSY_RX) || (hswpmi->State == HAL_SWPMI_STATE_BUSY_TX_RX))
+ {
+ *hswpmi->pRxBuffPtr++ = (uint32_t)(hswpmi->Instance->RDR);
+
+ if(--hswpmi->RxXferCount == 0)
+ {
+ /* Wait for RXBFF flag to update state */
+ HAL_SWPMI_RxCpltCallback(hswpmi);
+ }
+ }
+ else
+ {
+ status = HAL_BUSY;
+ }
+
+ return status;
+}
+
+/**
+ * @brief Wraps up reception in non-blocking mode.
+ * @param hswpmi: SWPMI handle
+ * @retval HAL status
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef SWPMI_EndReceive_IT(SWPMI_HandleTypeDef *hswpmi)
+{
+ /* Clear the SWPMI Receive buffer full Flag */
+ WRITE_REG(hswpmi->Instance->ICR, SWPMI_FLAG_RXBFF);
+ /* Disable the all SWPMI Receive Interrupts */
+ CLEAR_BIT(hswpmi->Instance->IER, SWPMI_IT_RIE | SWPMI_IT_RXBERIE | SWPMI_IT_RXOVRIE | SWPMI_IT_RXBFIE);
+
+ /* Check if a transmit Process is ongoing or not */
+ if(hswpmi->State == HAL_SWPMI_STATE_BUSY_TX_RX)
+ {
+ hswpmi->State = HAL_SWPMI_STATE_BUSY_TX;
+ }
+ else
+ {
+ hswpmi->State = HAL_SWPMI_STATE_READY;
+ }
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Wraps up transmission and reception in non-blocking mode.
+ * @param hswpmi: SWPMI handle
+ * @retval HAL status
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef SWPMI_EndTransmitReceive_IT(SWPMI_HandleTypeDef *hswpmi)
+{
+ /* Clear the SWPMI Transmission Complete Flag */
+ WRITE_REG(hswpmi->Instance->ICR, SWPMI_FLAG_TCF);
+ /* Disable the SWPMI Transmission Complete Interrupt */
+ CLEAR_BIT(hswpmi->Instance->IER, SWPMI_IT_TCIE);
+
+ /* Check if a receive Process is ongoing or not */
+ if(hswpmi->State == HAL_SWPMI_STATE_BUSY_TX_RX)
+ {
+ hswpmi->State = HAL_SWPMI_STATE_BUSY_RX;
+ }
+ else if(hswpmi->State == HAL_SWPMI_STATE_BUSY_TX)
+ {
+ hswpmi->State = HAL_SWPMI_STATE_READY;
+ }
+
+ return HAL_OK;
+}
+
+/**
+ * @brief DMA SWPMI transmit process complete callback.
+ * @param hdma: DMA handle
+ * @retval None
+ */
+static void SWPMI_DMATransmitCplt(DMA_HandleTypeDef *hdma)
+{
+ SWPMI_HandleTypeDef* hswpmi = ( SWPMI_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
+
+ /* DMA Normal mode*/
+ if((hdma->Instance->CCR & DMA_CCR_CIRC) != SET)
+ {
+ hswpmi->TxXferCount = 0;
+
+ /* Disable the DMA transfer for transmit request by setting the TXDMA bit
+ in the SWPMI CR register */
+ CLEAR_BIT(hswpmi->Instance->CR, SWPMI_CR_TXDMA);
+
+ /* Wait the TXBEF */
+ if(SWPMI_WaitOnFlagSetUntilTimeout(hswpmi, SWPMI_FLAG_TXBEF, SWPMI_TIMEOUT_VALUE) != HAL_OK)
+ {
+ /* Timeout occurred */
+ HAL_SWPMI_ErrorCallback(hswpmi);
+ }
+ else
+ {
+ /* No Timeout */
+ /* Check if a receive process is ongoing or not */
+ if(hswpmi->State == HAL_SWPMI_STATE_BUSY_TX_RX)
+ {
+ hswpmi->State = HAL_SWPMI_STATE_BUSY_RX;
+ }
+ else
+ {
+ hswpmi->State = HAL_SWPMI_STATE_READY;
+ }
+
+ HAL_SWPMI_TxCpltCallback(hswpmi);
+ }
+ }
+ /* DMA Circular mode */
+ else
+ {
+ HAL_SWPMI_TxCpltCallback(hswpmi);
+ }
+}
+
+/**
+ * @brief DMA SWPMI transmit process half complete callback.
+ * @param hdma : DMA handle
+ * @retval None
+ */
+static void SWPMI_DMATxHalfCplt(DMA_HandleTypeDef *hdma)
+{
+ SWPMI_HandleTypeDef* hswpmi = (SWPMI_HandleTypeDef*)((DMA_HandleTypeDef*)hdma)->Parent;
+
+ HAL_SWPMI_TxHalfCpltCallback(hswpmi);
+}
+
+
+/**
+ * @brief DMA SWPMI receive process complete callback.
+ * @param hdma: DMA handle
+ * @retval None
+ */
+static void SWPMI_DMAReceiveCplt(DMA_HandleTypeDef *hdma)
+{
+ SWPMI_HandleTypeDef* hswpmi = ( SWPMI_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
+
+ /* DMA Normal mode*/
+ if((hdma->Instance->CCR & DMA_CCR_CIRC) == RESET)
+ {
+ hswpmi->RxXferCount = 0;
+
+ /* Disable the DMA transfer for the receiver request by setting the RXDMA bit
+ in the SWPMI CR register */
+ CLEAR_BIT(hswpmi->Instance->CR, SWPMI_CR_RXDMA);
+
+ /* Check if a transmit Process is ongoing or not */
+ if(hswpmi->State == HAL_SWPMI_STATE_BUSY_TX_RX)
+ {
+ hswpmi->State = HAL_SWPMI_STATE_BUSY_TX;
+ }
+ else
+ {
+ hswpmi->State = HAL_SWPMI_STATE_READY;
+ }
+ }
+ HAL_SWPMI_RxCpltCallback(hswpmi);
+}
+
+/**
+ * @brief DMA SWPMI receive process half complete callback.
+ * @param hdma : DMA handle
+ * @retval None
+ */
+static void SWPMI_DMARxHalfCplt(DMA_HandleTypeDef *hdma)
+{
+ SWPMI_HandleTypeDef* hswpmi = (SWPMI_HandleTypeDef*)((DMA_HandleTypeDef*)hdma)->Parent;
+
+ HAL_SWPMI_RxHalfCpltCallback(hswpmi);
+}
+
+/**
+ * @brief DMA SWPMI communication error callback.
+ * @param hdma: DMA handle
+ * @retval None
+ */
+static void SWPMI_DMAError(DMA_HandleTypeDef *hdma)
+{
+ SWPMI_HandleTypeDef* hswpmi = ( SWPMI_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
+
+ /* Update handle */
+ hswpmi->RxXferCount = 0;
+ hswpmi->TxXferCount = 0;
+ hswpmi->State= HAL_SWPMI_STATE_READY;
+ hswpmi->ErrorCode |= HAL_SWPMI_ERROR_DMA;
+
+ HAL_SWPMI_ErrorCallback(hswpmi);
+}
+
+/**
+ * @brief Handle SWPMI Communication Timeout.
+ * @param hswpmi: SWPMI handle
+ * @param Flag: specifies the SWPMI flag to check.
+ * @param Timeout: Timeout duration
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef SWPMI_WaitOnFlagSetUntilTimeout(SWPMI_HandleTypeDef *hswpmi, uint32_t Flag, uint32_t Timeout)
+{
+ uint32_t tickstart = HAL_GetTick();
+ HAL_StatusTypeDef status = HAL_OK;
+
+ /* Wait until flag is set */
+ while(!(HAL_IS_BIT_SET(hswpmi->Instance->ISR, Flag)))
+ {
+ /* Check for the Timeout */
+ if(Timeout != HAL_MAX_DELAY)
+ {
+ if((HAL_GetTick() - tickstart ) > Timeout)
+ {
+ hswpmi->State = HAL_SWPMI_STATE_TIMEOUT;
+
+ status = HAL_TIMEOUT;
+ break;
+ }
+ }
+ }
+
+ return status;
+}
+
+/**
+ * @}
+ */
+
+#endif /* HAL_SWPMI_MODULE_ENABLED */
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
+