Thomas Lyp
Initial commit
Diff: mbed-dev-master/targets/TARGET_STM/TARGET_STM32F4/device/stm32f4xx_hal_cec.c
- Revision:
- 0:bb348c97df44
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed-dev-master/targets/TARGET_STM/TARGET_STM32F4/device/stm32f4xx_hal_cec.c Wed Sep 16 01:11:49 2020 +0000
@@ -0,0 +1,671 @@
+/**
+ ******************************************************************************
+ * @file stm32f4xx_hal_cec.c
+ * @author MCD Application Team
+ * @brief CEC HAL module driver.
+ * This file provides firmware functions to manage the following
+ * functionalities of the High Definition Multimedia Interface
+ * Consumer Electronics Control Peripheral (CEC).
+ * + Initialization and de-initialization functions
+ * + IO operation functions
+ * + Peripheral Control functions
+ *
+ *
+ @verbatim
+ ===============================================================================
+ ##### How to use this driver #####
+ ===============================================================================
+ [..]
+ The CEC HAL driver can be used as follow:
+
+ (#) Declare a CEC_HandleTypeDef handle structure.
+ (#) Initialize the CEC low level resources by implementing the HAL_CEC_MspInit ()API:
+ (##) Enable the CEC interface clock.
+ (##) CEC pins configuration:
+ (+++) Enable the clock for the CEC GPIOs.
+ (+++) Configure these CEC pins as alternate function pull-up.
+ (##) NVIC configuration if you need to use interrupt process (HAL_CEC_Transmit_IT()
+ and HAL_CEC_Receive_IT() APIs):
+ (+++) Configure the CEC interrupt priority.
+ (+++) Enable the NVIC CEC IRQ handle.
+ (+++) The specific CEC interrupts (Transmission complete interrupt,
+ RXNE interrupt and Error Interrupts) will be managed using the macros
+ __HAL_CEC_ENABLE_IT() and __HAL_CEC_DISABLE_IT() inside the transmit
+ and receive process.
+
+ (#) Program the Signal Free Time (SFT) and SFT option, Tolerance, reception stop in
+ in case of Bit Rising Error, Error-Bit generation conditions, device logical
+ address and Listen mode in the hcec Init structure.
+
+ (#) Initialize the CEC registers by calling the HAL_CEC_Init() API.
+
+ [..]
+ (@) This API (HAL_CEC_Init()) configures also the low level Hardware (GPIO, CLOCK, CORTEX...)
+ by calling the customed HAL_CEC_MspInit() API.
+
+ @endverbatim
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>© COPYRIGHT(c) 2017 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 "stm32f4xx_hal.h"
+
+/** @addtogroup STM32F4xx_HAL_Driver
+ * @{
+ */
+
+/** @defgroup CEC CEC
+ * @brief HAL CEC module driver
+ * @{
+ */
+#ifdef HAL_CEC_MODULE_ENABLED
+
+#if defined(STM32F446xx)
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+/** @defgroup CEC_Private_Constants CEC Private Constants
+ * @{
+ */
+/**
+ * @}
+ */
+
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+/* Private function prototypes -----------------------------------------------*/
+/** @defgroup CEC_Private_Functions CEC Private Functions
+ * @{
+ */
+/**
+ * @}
+ */
+
+/* Exported functions ---------------------------------------------------------*/
+
+/** @defgroup CEC_Exported_Functions CEC Exported Functions
+ * @{
+ */
+
+/** @defgroup CEC_Exported_Functions_Group1 Initialization and de-initialization functions
+ * @brief Initialization and Configuration functions
+ *
+@verbatim
+===============================================================================
+ ##### Initialization and Configuration functions #####
+ ===============================================================================
+ [..]
+ This subsection provides a set of functions allowing to initialize the CEC
+ (+) The following parameters need to be configured:
+ (++) SignalFreeTime
+ (++) Tolerance
+ (++) BRERxStop (RX stopped or not upon Bit Rising Error)
+ (++) BREErrorBitGen (Error-Bit generation in case of Bit Rising Error)
+ (++) LBPEErrorBitGen (Error-Bit generation in case of Long Bit Period Error)
+ (++) BroadcastMsgNoErrorBitGen (Error-bit generation in case of broadcast message error)
+ (++) SignalFreeTimeOption (SFT Timer start definition)
+ (++) OwnAddress (CEC device address)
+ (++) ListenMode
+
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Initializes the CEC mode according to the specified
+ * parameters in the CEC_InitTypeDef and creates the associated handle .
+ * @param hcec CEC handle
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_CEC_Init(CEC_HandleTypeDef *hcec)
+{
+ /* Check the CEC handle allocation */
+ if((hcec == NULL) ||(hcec->Init.RxBuffer == NULL))
+ {
+ return HAL_ERROR;
+ }
+
+ /* Check the parameters */
+ assert_param(IS_CEC_ALL_INSTANCE(hcec->Instance));
+ assert_param(IS_CEC_SIGNALFREETIME(hcec->Init.SignalFreeTime));
+ assert_param(IS_CEC_TOLERANCE(hcec->Init.Tolerance));
+ assert_param(IS_CEC_BRERXSTOP(hcec->Init.BRERxStop));
+ assert_param(IS_CEC_BREERRORBITGEN(hcec->Init.BREErrorBitGen));
+ assert_param(IS_CEC_LBPEERRORBITGEN(hcec->Init.LBPEErrorBitGen));
+ assert_param(IS_CEC_BROADCASTERROR_NO_ERRORBIT_GENERATION(hcec->Init.BroadcastMsgNoErrorBitGen));
+ assert_param(IS_CEC_SFTOP(hcec->Init.SignalFreeTimeOption));
+ assert_param(IS_CEC_LISTENING_MODE(hcec->Init.ListenMode));
+ assert_param(IS_CEC_OWN_ADDRESS(hcec->Init.OwnAddress));
+
+ if(hcec->gState == HAL_CEC_STATE_RESET)
+ {
+ /* Allocate lock resource and initialize it */
+ hcec->Lock = HAL_UNLOCKED;
+ /* Init the low level hardware : GPIO, CLOCK */
+ HAL_CEC_MspInit(hcec);
+ }
+ hcec->gState = HAL_CEC_STATE_BUSY;
+
+ /* Disable the Peripheral */
+ __HAL_CEC_DISABLE(hcec);
+
+ /* Write to CEC Control Register */
+ hcec->Instance->CFGR = hcec->Init.SignalFreeTime | hcec->Init.Tolerance | hcec->Init.BRERxStop|\
+ hcec->Init.BREErrorBitGen | hcec->Init.LBPEErrorBitGen | hcec->Init.BroadcastMsgNoErrorBitGen |\
+ hcec->Init.SignalFreeTimeOption |((uint32_t)(hcec->Init.OwnAddress)<<16U) |\
+ hcec->Init.ListenMode;
+
+ /* Enable the following CEC Transmission/Reception interrupts as
+ * well as the following CEC Transmission/Reception Errors interrupts
+ * Rx Byte Received IT
+ * End of Reception IT
+ * Rx overrun
+ * Rx bit rising error
+ * Rx short bit period error
+ * Rx long bit period error
+ * Rx missing acknowledge
+ * Tx Byte Request IT
+ * End of Transmission IT
+ * Tx Missing Acknowledge IT
+ * Tx-Error IT
+ * Tx-Buffer Underrun IT
+ * Tx arbitration lost */
+ __HAL_CEC_ENABLE_IT(hcec, CEC_IT_RXBR|CEC_IT_RXEND|CEC_IER_RX_ALL_ERR|CEC_IT_TXBR|CEC_IT_TXEND|CEC_IER_TX_ALL_ERR);
+
+ /* Enable the CEC Peripheral */
+ __HAL_CEC_ENABLE(hcec);
+
+ hcec->ErrorCode = HAL_CEC_ERROR_NONE;
+ hcec->gState = HAL_CEC_STATE_READY;
+ hcec->RxState = HAL_CEC_STATE_READY;
+
+ return HAL_OK;
+}
+
+/**
+ * @brief DeInitializes the CEC peripheral
+ * @param hcec CEC handle
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_CEC_DeInit(CEC_HandleTypeDef *hcec)
+{
+ /* Check the CEC handle allocation */
+ if(hcec == NULL)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Check the parameters */
+ assert_param(IS_CEC_ALL_INSTANCE(hcec->Instance));
+
+ hcec->gState = HAL_CEC_STATE_BUSY;
+
+ /* DeInit the low level hardware */
+ HAL_CEC_MspDeInit(hcec);
+ /* Disable the Peripheral */
+ __HAL_CEC_DISABLE(hcec);
+
+ /* Clear Flags */
+ __HAL_CEC_CLEAR_FLAG(hcec,CEC_FLAG_TXEND|CEC_FLAG_TXBR|CEC_FLAG_RXBR|CEC_FLAG_RXEND|CEC_ISR_ALL_ERROR);
+
+ /* Disable the following CEC Transmission/Reception interrupts as
+ * well as the following CEC Transmission/Reception Errors interrupts
+ * Rx Byte Received IT
+ * End of Reception IT
+ * Rx overrun
+ * Rx bit rising error
+ * Rx short bit period error
+ * Rx long bit period error
+ * Rx missing acknowledge
+ * Tx Byte Request IT
+ * End of Transmission IT
+ * Tx Missing Acknowledge IT
+ * Tx-Error IT
+ * Tx-Buffer Underrun IT
+ * Tx arbitration lost */
+ __HAL_CEC_DISABLE_IT(hcec, CEC_IT_RXBR|CEC_IT_RXEND|CEC_IER_RX_ALL_ERR|CEC_IT_TXBR|CEC_IT_TXEND|CEC_IER_TX_ALL_ERR);
+
+ hcec->ErrorCode = HAL_CEC_ERROR_NONE;
+ hcec->gState = HAL_CEC_STATE_RESET;
+ hcec->RxState = HAL_CEC_STATE_RESET;
+
+ /* Process Unlock */
+ __HAL_UNLOCK(hcec);
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Initializes the Own Address of the CEC device
+ * @param hcec CEC handle
+ * @param CEC_OwnAddress The CEC own address.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_CEC_SetDeviceAddress(CEC_HandleTypeDef *hcec, uint16_t CEC_OwnAddress)
+{
+ /* Check the parameters */
+ assert_param(IS_CEC_OWN_ADDRESS(CEC_OwnAddress));
+
+ if ((hcec->gState == HAL_CEC_STATE_READY) && (hcec->RxState == HAL_CEC_STATE_READY))
+ {
+ /* Process Locked */
+ __HAL_LOCK(hcec);
+
+ hcec->gState = HAL_CEC_STATE_BUSY;
+
+ /* Disable the Peripheral */
+ __HAL_CEC_DISABLE(hcec);
+
+ if(CEC_OwnAddress != CEC_OWN_ADDRESS_NONE)
+ {
+ hcec->Instance->CFGR |= ((uint32_t)CEC_OwnAddress<<16U);
+ }
+ else
+ {
+ hcec->Instance->CFGR &= ~(CEC_CFGR_OAR);
+ }
+
+ hcec->gState = HAL_CEC_STATE_READY;
+ hcec->ErrorCode = HAL_CEC_ERROR_NONE;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hcec);
+
+ /* Enable the Peripheral */
+ __HAL_CEC_ENABLE(hcec);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief CEC MSP Init
+ * @param hcec CEC handle
+ * @retval None
+ */
+ __weak void HAL_CEC_MspInit(CEC_HandleTypeDef *hcec)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(hcec);
+ /* NOTE : This function should not be modified, when the callback is needed,
+ the HAL_CEC_MspInit can be implemented in the user file
+ */
+}
+
+/**
+ * @brief CEC MSP DeInit
+ * @param hcec CEC handle
+ * @retval None
+ */
+ __weak void HAL_CEC_MspDeInit(CEC_HandleTypeDef *hcec)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(hcec);
+ /* NOTE : This function should not be modified, when the callback is needed,
+ the HAL_CEC_MspDeInit can be implemented in the user file
+ */
+}
+
+/**
+ * @}
+ */
+
+/** @defgroup CEC_Exported_Functions_Group2 Input and Output operation functions
+ * @brief CEC Transmit/Receive functions
+ *
+@verbatim
+ ===============================================================================
+ ##### IO operation functions #####
+ ===============================================================================
+ This subsection provides a set of functions allowing to manage the CEC data transfers.
+
+ (#) The CEC handle must contain the initiator (TX side) and the destination (RX side)
+ logical addresses (4-bit long addresses, 0x0F for broadcast messages destination)
+
+ (#) The communication is performed using Interrupts.
+ These API's return the HAL status.
+ The end of the data processing will be indicated through the
+ dedicated CEC IRQ when using Interrupt mode.
+ The HAL_CEC_TxCpltCallback(), HAL_CEC_RxCpltCallback() user callbacks
+ will be executed respectivelly at the end of the transmit or Receive process
+ The HAL_CEC_ErrorCallback()user callback will be executed when a communication
+ error is detected
+
+ (#) API's with Interrupt are :
+ (+) HAL_CEC_Transmit_IT()
+ (+) HAL_CEC_IRQHandler()
+
+ (#) A set of User Callbacks are provided:
+ (+) HAL_CEC_TxCpltCallback()
+ (+) HAL_CEC_RxCpltCallback()
+ (+) HAL_CEC_ErrorCallback()
+
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Send data in interrupt mode
+ * @param hcec CEC handle
+ * @param InitiatorAddress Initiator logical address
+ * @param DestinationAddress destination logical address
+ * @param pData pointer to input byte data buffer
+ * @param Size amount of data to be sent in bytes (without counting the header).
+ * 0 means only the header is sent (ping operation).
+ * Maximum TX size is 15 bytes (1 opcode and up to 14 operands).
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_CEC_Transmit_IT(CEC_HandleTypeDef *hcec, uint8_t InitiatorAddress, uint8_t DestinationAddress, uint8_t *pData, uint32_t Size)
+{
+ /* if the IP isn't already busy and if there is no previous transmission
+ already pending due to arbitration lost */
+ if (hcec->gState == HAL_CEC_STATE_READY)
+ {
+ if((pData == NULL ) && (Size > 0U))
+ {
+ return HAL_ERROR;
+ }
+
+ assert_param(IS_CEC_ADDRESS(DestinationAddress));
+ assert_param(IS_CEC_ADDRESS(InitiatorAddress));
+ assert_param(IS_CEC_MSGSIZE(Size));
+
+ /* Process Locked */
+ __HAL_LOCK(hcec);
+ hcec->pTxBuffPtr = pData;
+ hcec->gState = HAL_CEC_STATE_BUSY_TX;
+ hcec->ErrorCode = HAL_CEC_ERROR_NONE;
+
+ /* initialize the number of bytes to send,
+ * 0 means only one header is sent (ping operation) */
+ hcec->TxXferCount = Size;
+
+ /* in case of no payload (Size = 0), sender is only pinging the system;
+ Set TX End of Message (TXEOM) bit, must be set before writing data to TXDR */
+ if (Size == 0U)
+ {
+ __HAL_CEC_LAST_BYTE_TX_SET(hcec);
+ }
+
+ /* send header block */
+ hcec->Instance->TXDR = ((uint8_t)(InitiatorAddress << CEC_INITIATOR_LSB_POS) |(uint8_t) DestinationAddress);
+ /* Set TX Start of Message (TXSOM) bit */
+ __HAL_CEC_FIRST_BYTE_TX_SET(hcec);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hcec);
+
+ return HAL_OK;
+
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Get size of the received frame.
+ * @param hcec CEC handle
+ * @retval Frame size
+ */
+uint32_t HAL_CEC_GetLastReceivedFrameSize(CEC_HandleTypeDef *hcec)
+{
+ return hcec->RxXferSize;
+}
+
+/**
+ * @brief Change Rx Buffer.
+ * @param hcec CEC handle
+ * @param Rxbuffer Rx Buffer
+ * @note This function can be called only inside the HAL_CEC_RxCpltCallback()
+ * @retval Frame size
+ */
+void HAL_CEC_ChangeRxBuffer(CEC_HandleTypeDef *hcec, uint8_t* Rxbuffer)
+{
+ hcec->Init.RxBuffer = Rxbuffer;
+}
+
+/**
+ * @brief This function handles CEC interrupt requests.
+ * @param hcec CEC handle
+ * @retval None
+ */
+void HAL_CEC_IRQHandler(CEC_HandleTypeDef *hcec)
+{
+
+ /* save interrupts register for further error or interrupts handling purposes */
+ uint32_t reg = 0U;
+ reg = hcec->Instance->ISR;
+
+
+ /* ----------------------------Arbitration Lost Management----------------------------------*/
+ /* CEC TX arbitration error interrupt occurred --------------------------------------*/
+ if((reg & CEC_FLAG_ARBLST) != RESET)
+ {
+ hcec->ErrorCode = HAL_CEC_ERROR_ARBLST;
+ __HAL_CEC_CLEAR_FLAG(hcec, CEC_FLAG_ARBLST);
+ }
+
+ /* ----------------------------Rx Management----------------------------------*/
+ /* CEC RX byte received interrupt ---------------------------------------------------*/
+ if((reg & CEC_FLAG_RXBR) != RESET)
+ {
+ /* reception is starting */
+ hcec->RxState = HAL_CEC_STATE_BUSY_RX;
+ hcec->RxXferSize++;
+ /* read received byte */
+ *hcec->Init.RxBuffer++ = hcec->Instance->RXDR;
+ __HAL_CEC_CLEAR_FLAG(hcec, CEC_FLAG_RXBR);
+ }
+
+ /* CEC RX end received interrupt ---------------------------------------------------*/
+ if((reg & CEC_FLAG_RXEND) != RESET)
+ {
+ /* clear IT */
+ __HAL_CEC_CLEAR_FLAG(hcec, CEC_FLAG_RXEND);
+
+ /* Rx process is completed, restore hcec->RxState to Ready */
+ hcec->RxState = HAL_CEC_STATE_READY;
+ hcec->ErrorCode = HAL_CEC_ERROR_NONE;
+ hcec->Init.RxBuffer -= hcec->RxXferSize;
+ HAL_CEC_RxCpltCallback(hcec, hcec->RxXferSize);
+ hcec->RxXferSize = 0U;
+ }
+
+ /* ----------------------------Tx Management----------------------------------*/
+ /* CEC TX byte request interrupt ------------------------------------------------*/
+ if((reg & CEC_FLAG_TXBR) != RESET)
+ {
+ if (hcec->TxXferCount == 0U)
+ {
+ /* if this is the last byte transmission, set TX End of Message (TXEOM) bit */
+ __HAL_CEC_LAST_BYTE_TX_SET(hcec);
+ hcec->Instance->TXDR = *hcec->pTxBuffPtr++;
+ }
+ else
+ {
+ hcec->Instance->TXDR = *hcec->pTxBuffPtr++;
+ hcec->TxXferCount--;
+ }
+ /* clear Tx-Byte request flag */
+ __HAL_CEC_CLEAR_FLAG(hcec,CEC_FLAG_TXBR);
+ }
+
+ /* CEC TX end interrupt ------------------------------------------------*/
+ if((reg & CEC_FLAG_TXEND) != RESET)
+ {
+ __HAL_CEC_CLEAR_FLAG(hcec, CEC_FLAG_TXEND);
+
+ /* Tx process is ended, restore hcec->gState to Ready */
+ hcec->gState = HAL_CEC_STATE_READY;
+ /* Call the Process Unlocked before calling the Tx call back API to give the possibility to
+ start again the Transmission under the Tx call back API */
+ __HAL_UNLOCK(hcec);
+ hcec->ErrorCode = HAL_CEC_ERROR_NONE;
+ HAL_CEC_TxCpltCallback(hcec);
+ }
+
+ /* ----------------------------Rx/Tx Error Management----------------------------------*/
+ if ((reg & (CEC_ISR_RXOVR|CEC_ISR_BRE|CEC_ISR_SBPE|CEC_ISR_LBPE|CEC_ISR_RXACKE|CEC_ISR_TXUDR|CEC_ISR_TXERR|CEC_ISR_TXACKE)) != 0U)
+ {
+ hcec->ErrorCode = reg;
+ __HAL_CEC_CLEAR_FLAG(hcec, HAL_CEC_ERROR_RXOVR|HAL_CEC_ERROR_BRE|CEC_FLAG_LBPE|CEC_FLAG_SBPE|HAL_CEC_ERROR_RXACKE|HAL_CEC_ERROR_TXUDR|HAL_CEC_ERROR_TXERR|HAL_CEC_ERROR_TXACKE);
+
+
+ if((reg & (CEC_ISR_RXOVR|CEC_ISR_BRE|CEC_ISR_SBPE|CEC_ISR_LBPE|CEC_ISR_RXACKE)) != RESET)
+ {
+ hcec->Init.RxBuffer-=hcec->RxXferSize;
+ hcec->RxXferSize = 0U;
+ hcec->RxState = HAL_CEC_STATE_READY;
+ }
+ else if (((reg & (CEC_ISR_TXUDR|CEC_ISR_TXERR|CEC_ISR_TXACKE)) != RESET) && ((reg & CEC_ISR_ARBLST) == RESET))
+ {
+ /* Set the CEC state ready to be able to start again the process */
+ hcec->gState = HAL_CEC_STATE_READY;
+ }
+
+ /* Error Call Back */
+ HAL_CEC_ErrorCallback(hcec);
+ }
+
+}
+
+/**
+ * @brief Tx Transfer completed callback
+ * @param hcec CEC handle
+ * @retval None
+ */
+ __weak void HAL_CEC_TxCpltCallback(CEC_HandleTypeDef *hcec)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(hcec);
+ /* NOTE : This function should not be modified, when the callback is needed,
+ the HAL_CEC_TxCpltCallback can be implemented in the user file
+ */
+}
+
+/**
+ * @brief Rx Transfer completed callback
+ * @param hcec CEC handle
+ * @param RxFrameSize Size of frame
+ * @retval None
+ */
+__weak void HAL_CEC_RxCpltCallback(CEC_HandleTypeDef *hcec, uint32_t RxFrameSize)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(hcec);
+ UNUSED(RxFrameSize);
+ /* NOTE : This function should not be modified, when the callback is needed,
+ the HAL_CEC_RxCpltCallback can be implemented in the user file
+ */
+}
+
+/**
+ * @brief CEC error callbacks
+ * @param hcec CEC handle
+ * @retval None
+ */
+ __weak void HAL_CEC_ErrorCallback(CEC_HandleTypeDef *hcec)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(hcec);
+ /* NOTE : This function should not be modified, when the callback is needed,
+ the HAL_CEC_ErrorCallback can be implemented in the user file
+ */
+}
+/**
+ * @}
+ */
+
+/** @defgroup CEC_Exported_Functions_Group3 Peripheral Control function
+ * @brief CEC control functions
+ *
+@verbatim
+ ===============================================================================
+ ##### Peripheral Control function #####
+ ===============================================================================
+ [..]
+ This subsection provides a set of functions allowing to control the CEC.
+ (+) HAL_CEC_GetState() API can be helpful to check in run-time the state of the CEC peripheral.
+ (+) HAL_CEC_GetError() API can be helpful to check in run-time the error of the CEC peripheral.
+@endverbatim
+ * @{
+ */
+/**
+ * @brief return the CEC state
+ * @param hcec pointer to a CEC_HandleTypeDef structure that contains
+ * the configuration information for the specified CEC module.
+ * @retval HAL state
+ */
+HAL_CEC_StateTypeDef HAL_CEC_GetState(CEC_HandleTypeDef *hcec)
+{
+ uint32_t temp1 = 0x00U, temp2 = 0x00U;
+ temp1 = hcec->gState;
+ temp2 = hcec->RxState;
+
+ return (HAL_CEC_StateTypeDef)(temp1 | temp2);
+}
+
+/**
+ * @brief Return the CEC error code
+ * @param hcec pointer to a CEC_HandleTypeDef structure that contains
+ * the configuration information for the specified CEC.
+ * @retval CEC Error Code
+ */
+uint32_t HAL_CEC_GetError(CEC_HandleTypeDef *hcec)
+{
+ return hcec->ErrorCode;
+}
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+#endif /* STM32F446xx */
+
+#endif /* HAL_CEC_MODULE_ENABLED */
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/