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Diffstat (limited to 'c/src/lib/libbsp/arm/stm32f7x/hal/STM32F7xx_HAL_Driver/Src/stm32f7xx_hal_cec.c')
| -rw-r--r-- | c/src/lib/libbsp/arm/stm32f7x/hal/STM32F7xx_HAL_Driver/Src/stm32f7xx_hal_cec.c | 1109 |
1 files changed, 0 insertions, 1109 deletions
diff --git a/c/src/lib/libbsp/arm/stm32f7x/hal/STM32F7xx_HAL_Driver/Src/stm32f7xx_hal_cec.c b/c/src/lib/libbsp/arm/stm32f7x/hal/STM32F7xx_HAL_Driver/Src/stm32f7xx_hal_cec.c deleted file mode 100644 index 7c3847b7a3..0000000000 --- a/c/src/lib/libbsp/arm/stm32f7x/hal/STM32F7xx_HAL_Driver/Src/stm32f7xx_hal_cec.c +++ /dev/null @@ -1,1109 +0,0 @@ -/** - ****************************************************************************** - * @file stm32f7xx_hal_cec.c - * @author MCD Application Team - * @version V1.0.1 - * @date 25-June-2015 - * @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 function - * + IO operation function - * + Peripheral Control function - * - * - @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...etc) - by calling the customed HAL_CEC_MspInit() API. - - @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 "stm32f7xx_hal.h" - -/** @addtogroup STM32F7xx_HAL_Driver - * @{ - */ - -/** @defgroup CEC CEC - * @brief HAL CEC module driver - * @{ - */ -#ifdef HAL_CEC_MODULE_ENABLED - -/* Private typedef -----------------------------------------------------------*/ -/* Private define ------------------------------------------------------------*/ -/** @defgroup CEC_Private_Constants CEC Private Constants - * @{ - */ -#define CEC_CFGR_FIELDS (CEC_CFGR_SFT | CEC_CFGR_RXTOL | CEC_CFGR_BRESTP \ - | CEC_CFGR_BREGEN | CEC_CFGR_LBPEGEN | CEC_CFGR_SFTOPT \ - | CEC_CFGR_BRDNOGEN | CEC_CFGR_OAR | CEC_CFGR_LSTN) -/** - * @} - */ - -/* Private macro -------------------------------------------------------------*/ -/* Private variables ---------------------------------------------------------*/ -/* Private function prototypes -----------------------------------------------*/ -/** @defgroup CEC_Private_Functions CEC Private Functions - * @{ - */ -static HAL_StatusTypeDef CEC_Transmit_IT(CEC_HandleTypeDef *hcec); -static HAL_StatusTypeDef CEC_Receive_IT(CEC_HandleTypeDef *hcec); -/** - * @} - */ - -/* 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) -{ - uint32_t tmpreg = 0x0; - - /* Check the CEC handle allocation */ - if(hcec == 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_OAR_ADDRESS(hcec->Init.OwnAddress)); - assert_param(IS_CEC_LISTENING_MODE(hcec->Init.ListenMode)); - assert_param(IS_CEC_ADDRESS(hcec->Init.InitiatorAddress)); - - - if(hcec->State == 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->State = HAL_CEC_STATE_BUSY; - - /* Disable the Peripheral */ - __HAL_CEC_DISABLE(hcec); - - tmpreg = hcec->Init.SignalFreeTime; - tmpreg |= hcec->Init.Tolerance; - tmpreg |= hcec->Init.BRERxStop; - tmpreg |= hcec->Init.BREErrorBitGen; - tmpreg |= hcec->Init.LBPEErrorBitGen; - tmpreg |= hcec->Init.BroadcastMsgNoErrorBitGen; - tmpreg |= hcec->Init.SignalFreeTimeOption; - tmpreg |= (hcec->Init.OwnAddress << CEC_CFGR_OAR_LSB_POS); - tmpreg |= hcec->Init.ListenMode; - - /* Write to CEC Control Register */ - MODIFY_REG(hcec->Instance->CFGR, CEC_CFGR_FIELDS, tmpreg); - - /* Enable the Peripheral */ - __HAL_CEC_ENABLE(hcec); - - hcec->State = 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->State = HAL_CEC_STATE_BUSY; - - /* DeInit the low level hardware */ - HAL_CEC_MspDeInit(hcec); - /* Disable the Peripheral */ - __HAL_CEC_DISABLE(hcec); - - hcec->ErrorCode = HAL_CEC_ERROR_NONE; - hcec->State = HAL_CEC_STATE_RESET; - - /* Process Unlock */ - __HAL_UNLOCK(hcec); - - return HAL_OK; -} - -/** - * @brief CEC MSP Init - * @param hcec: CEC handle - * @retval None - */ - __weak void HAL_CEC_MspInit(CEC_HandleTypeDef *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) -{ - /* 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, 0xF for broadcast messages destination) - - (#) There are two mode of transfer: - (+) Blocking mode: The communication is performed in polling mode. - The HAL status of all data processing is returned by the same function - after finishing transfer. - (+) No-Blocking mode: The communication is performed using Interrupts. - 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 respectively at the end of the transmit or Receive process - The HAL_CEC_ErrorCallback()user callback will be executed when a communication - error is detected - - (#) Blocking mode API's are : - (+) HAL_CEC_Transmit() - (+) HAL_CEC_Receive() - - (#) Non-Blocking mode API's with Interrupt are : - (+) HAL_CEC_Transmit_IT() - (+) HAL_CEC_Receive_IT() - (+) HAL_CEC_IRQHandler() - - (#) A set of Transfer Complete Callbacks are provided in No_Blocking mode: - (+) HAL_CEC_TxCpltCallback() - (+) HAL_CEC_RxCpltCallback() - (+) HAL_CEC_ErrorCallback() - -@endverbatim - * @{ - */ - -/** - * @brief Send data in blocking mode - * @param hcec: CEC handle - * @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). - * @param Timeout: Timeout duration. - * @retval HAL status - */ -HAL_StatusTypeDef HAL_CEC_Transmit(CEC_HandleTypeDef *hcec, uint8_t DestinationAddress, uint8_t *pData, uint32_t Size, uint32_t Timeout) -{ - uint8_t temp = 0; - uint32_t tempisr = 0; - uint32_t tickstart = 0; - - if((hcec->State == HAL_CEC_STATE_READY) && (__HAL_CEC_GET_TRANSMISSION_START_FLAG(hcec) == RESET)) - { - hcec->ErrorCode = HAL_CEC_ERROR_NONE; - if((pData == NULL ) && (Size > 0)) - { - hcec->State = HAL_CEC_STATE_ERROR; - return HAL_ERROR; - } - - assert_param(IS_CEC_ADDRESS(DestinationAddress)); - assert_param(IS_CEC_MSGSIZE(Size)); - - /* Process Locked */ - __HAL_LOCK(hcec); - - hcec->State = HAL_CEC_STATE_BUSY_TX; - - hcec->TxXferCount = Size; - - /* case no data to be sent, sender is only pinging the system */ - if (Size == 0) - { - /* Set TX End of Message (TXEOM) bit, must be set before writing data to TXDR */ - __HAL_CEC_LAST_BYTE_TX_SET(hcec); - } - - /* send header block */ - temp = ((uint32_t)hcec->Init.InitiatorAddress << CEC_INITIATOR_LSB_POS) | DestinationAddress; - hcec->Instance->TXDR = temp; - /* Set TX Start of Message (TXSOM) bit */ - __HAL_CEC_FIRST_BYTE_TX_SET(hcec); - - while (hcec->TxXferCount > 0) - { - hcec->TxXferCount--; - - tickstart = HAL_GetTick(); - while(HAL_IS_BIT_CLR(hcec->Instance->ISR, CEC_FLAG_TXBR)) - { - if(Timeout != HAL_MAX_DELAY) - { - if((Timeout == 0) || ((HAL_GetTick() - tickstart) > Timeout)) - { - hcec->State = HAL_CEC_STATE_TIMEOUT; - /* Process Unlocked */ - __HAL_UNLOCK(hcec); - return HAL_TIMEOUT; - } - } - - /* check whether error occurred while waiting for TXBR to be set: - * has Tx underrun occurred ? - * has Tx error occurred ? - * has Tx Missing Acknowledge error occurred ? - * has Arbitration Loss error occurred ? */ - tempisr = hcec->Instance->ISR; - if ((tempisr & (CEC_FLAG_TXUDR|CEC_FLAG_TXERR|CEC_FLAG_TXACKE|CEC_FLAG_ARBLST)) != 0) - { - /* copy ISR for error handling purposes */ - hcec->ErrorCode = tempisr; - /* clear all error flags by default */ - __HAL_CEC_CLEAR_FLAG(hcec, (CEC_FLAG_TXUDR|CEC_FLAG_TXERR|CEC_FLAG_TXACKE|CEC_FLAG_ARBLST)); - hcec->State = HAL_CEC_STATE_ERROR; - __HAL_UNLOCK(hcec); - return HAL_ERROR; - } - } - /* TXBR to clear BEFORE writing TXDR register */ - __HAL_CEC_CLEAR_FLAG(hcec, CEC_FLAG_TXBR); - if (hcec->TxXferCount == 0) - { - /* if last byte transmission, set TX End of Message (TXEOM) bit */ - __HAL_CEC_LAST_BYTE_TX_SET(hcec); - } - hcec->Instance->TXDR = *pData++; - - /* error check after TX byte write up */ - tempisr = hcec->Instance->ISR; - if ((tempisr & (CEC_FLAG_TXUDR|CEC_FLAG_TXERR|CEC_FLAG_TXACKE|CEC_FLAG_ARBLST)) != 0) - { - /* copy ISR for error handling purposes */ - hcec->ErrorCode = tempisr; - /* clear all error flags by default */ - __HAL_CEC_CLEAR_FLAG(hcec, (CEC_FLAG_TXUDR|CEC_FLAG_TXERR|CEC_FLAG_TXACKE|CEC_FLAG_ARBLST)); - hcec->State = HAL_CEC_STATE_ERROR; - __HAL_UNLOCK(hcec); - return HAL_ERROR; - } - } /* end while (while (hcec->TxXferCount > 0)) */ - - - /* if no error up to this point, check that transmission is - * complete, that is wait until TXEOM is reset */ - tickstart = HAL_GetTick(); - - while (HAL_IS_BIT_SET(hcec->Instance->CR, CEC_CR_TXEOM)) - { - if(Timeout != HAL_MAX_DELAY) - { - if((Timeout == 0) || ((HAL_GetTick() - tickstart) > Timeout)) - { - hcec->State = HAL_CEC_STATE_ERROR; - __HAL_UNLOCK(hcec); - return HAL_TIMEOUT; - } - } - } - - /* Final error check once all bytes have been transmitted */ - tempisr = hcec->Instance->ISR; - if ((tempisr & (CEC_FLAG_TXUDR|CEC_FLAG_TXERR|CEC_FLAG_TXACKE)) != 0) - { - /* copy ISR for error handling purposes */ - hcec->ErrorCode = tempisr; - /* clear all error flags by default */ - __HAL_CEC_CLEAR_FLAG(hcec, (CEC_FLAG_TXUDR|CEC_FLAG_TXERR|CEC_FLAG_TXACKE)); - hcec->State = HAL_CEC_STATE_ERROR; - __HAL_UNLOCK(hcec); - return HAL_ERROR; - } - - hcec->State = HAL_CEC_STATE_READY; - __HAL_UNLOCK(hcec); - - return HAL_OK; - } - else - { - return HAL_BUSY; - } -} - -/** - * @brief Receive data in blocking mode. Must be invoked when RXBR has been set. - * @param hcec: CEC handle - * @param pData: pointer to received data buffer. - * @param Timeout: Timeout duration. - * Note that the received data size is not known beforehand, the latter is known - * when the reception is complete and is stored in hcec->RxXferSize. - * hcec->RxXferSize is the sum of opcodes + operands (0 to 14 operands max). - * If only a header is received, hcec->RxXferSize = 0 - * @retval HAL status - */ -HAL_StatusTypeDef HAL_CEC_Receive(CEC_HandleTypeDef *hcec, uint8_t *pData, uint32_t Timeout) -{ - uint32_t temp; - uint32_t tickstart = 0; - - if (hcec->State == HAL_CEC_STATE_READY) - { - hcec->ErrorCode = HAL_CEC_ERROR_NONE; - if (pData == NULL ) - { - hcec->State = HAL_CEC_STATE_ERROR; - return HAL_ERROR; - } - - hcec->RxXferSize = 0; - /* Process Locked */ - __HAL_LOCK(hcec); - - - /* Rx loop until CEC_ISR_RXEND is set */ - while (HAL_IS_BIT_CLR(hcec->Instance->ISR, CEC_FLAG_RXEND)) - { - tickstart = HAL_GetTick(); - /* Wait for next byte to be received */ - while (HAL_IS_BIT_CLR(hcec->Instance->ISR, CEC_FLAG_RXBR)) - { - if(Timeout != HAL_MAX_DELAY) - { - if((Timeout == 0) || ((HAL_GetTick() - tickstart) > Timeout)) - { - hcec->State = HAL_CEC_STATE_TIMEOUT; - __HAL_UNLOCK(hcec); - return HAL_TIMEOUT; - } - } - /* any error so far ? - * has Rx Missing Acknowledge occurred ? - * has Rx Long Bit Period error occurred ? - * has Rx Short Bit Period error occurred ? - * has Rx Bit Rising error occurred ? - * has Rx Overrun error occurred ? */ - temp = (uint32_t) (hcec->Instance->ISR); - if ((temp & (CEC_FLAG_RXACKE|CEC_FLAG_LBPE|CEC_FLAG_SBPE|CEC_FLAG_BRE|CEC_FLAG_RXOVR)) != 0) - { - /* copy ISR for error handling purposes */ - hcec->ErrorCode = temp; - /* clear all error flags by default */ - __HAL_CEC_CLEAR_FLAG(hcec,(CEC_FLAG_RXACKE|CEC_FLAG_LBPE|CEC_FLAG_SBPE|CEC_FLAG_BRE|CEC_FLAG_RXOVR)); - hcec->State = HAL_CEC_STATE_ERROR; - __HAL_UNLOCK(hcec); - return HAL_ERROR; - } - } /* while (HAL_IS_BIT_CLR(hcec->Instance->ISR, CEC_ISR_RXBR)) */ - - - /* read received data */ - *pData++ = hcec->Instance->RXDR; - temp = (uint32_t) (hcec->Instance->ISR); - /* end of message ? */ - if ((temp & CEC_ISR_RXEND) != 0) - { - assert_param(IS_CEC_MSGSIZE(hcec->RxXferSize)); - __HAL_CEC_CLEAR_FLAG(hcec,CEC_FLAG_RXEND); - hcec->State = HAL_CEC_STATE_READY; - __HAL_UNLOCK(hcec); - return HAL_OK; - } - - /* clear Rx-Byte Received flag */ - __HAL_CEC_CLEAR_FLAG(hcec,CEC_FLAG_RXBR); - /* increment payload byte counter */ - hcec->RxXferSize++; - } /* while (HAL_IS_BIT_CLR(hcec->Instance->ISR, CEC_ISR_RXEND)) */ - - /* if the instructions below are executed, it means RXEND was set when RXBR was - * set for the first time: - * the code within the "while (HAL_IS_BIT_CLR(hcec->Instance->ISR, CEC_ISR_RXEND))" - * loop has not been executed and this means a single byte has been sent */ - *pData++ = hcec->Instance->RXDR; - /* only one header is received: RxXferSize is set to 0 (no operand, no opcode) */ - hcec->RxXferSize = 0; - __HAL_CEC_CLEAR_FLAG(hcec, CEC_FLAG_RXEND); - - hcec->State = HAL_CEC_STATE_READY; - __HAL_UNLOCK(hcec); - return HAL_OK; - } - else - { - return HAL_BUSY; - } -} - -/** - * @brief Send data in interrupt mode - * @param hcec: CEC handle - * @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 DestinationAddress, uint8_t *pData, uint32_t Size) -{ - uint8_t temp = 0; - /* if the IP isn't already busy and if there is no previous transmission - already pending due to arbitration lost */ - if (((hcec->State == HAL_CEC_STATE_READY) || (hcec->State == HAL_CEC_STATE_STANDBY_RX)) - && (__HAL_CEC_GET_TRANSMISSION_START_FLAG(hcec) == RESET)) - { - if((pData == NULL ) && (Size > 0)) - { - hcec->State = HAL_CEC_STATE_ERROR; - return HAL_ERROR; - } - - assert_param(IS_CEC_ADDRESS(DestinationAddress)); - assert_param(IS_CEC_MSGSIZE(Size)); - - /* Process Locked */ - __HAL_LOCK(hcec); - hcec->pTxBuffPtr = pData; - hcec->State = HAL_CEC_STATE_BUSY_TX; - hcec->ErrorCode = HAL_CEC_ERROR_NONE; - - /* Disable Peripheral to write CEC_IER register */ - __HAL_CEC_DISABLE(hcec); - - /* Enable the following two CEC Transmission interrupts as - * well as the following CEC Transmission Errors interrupts: - * 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_TXBR|CEC_IT_TXEND|CEC_IER_TX_ALL_ERR); - - /* Enable the Peripheral */ - __HAL_CEC_ENABLE(hcec); - - /* initialize the number of bytes to send, - * 0 means only one header is sent (ping operation) */ - hcec->TxXferCount = Size; - - /* Process Unlocked */ - __HAL_UNLOCK(hcec); - - /* 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 == 0) - { - __HAL_CEC_LAST_BYTE_TX_SET(hcec); - } - - /* send header block */ - temp = ((uint32_t)hcec->Init.InitiatorAddress << CEC_INITIATOR_LSB_POS) | DestinationAddress; - hcec->Instance->TXDR = temp; - /* Set TX Start of Message (TXSOM) bit */ - __HAL_CEC_FIRST_BYTE_TX_SET(hcec); - - return HAL_OK; - } - /* if the IP is already busy or if there is a previous transmission - already pending due to arbitration loss */ - else if ((hcec->State == HAL_CEC_STATE_BUSY_TX) - || (__HAL_CEC_GET_TRANSMISSION_START_FLAG(hcec) != RESET)) - { - __HAL_LOCK(hcec); - /* set state to BUSY TX, in case it wasn't set already (case - * of transmission new attempt after arbitration loss) */ - if (hcec->State != HAL_CEC_STATE_BUSY_TX) - { - hcec->State = HAL_CEC_STATE_BUSY_TX; - } - - /* if all data have been sent */ - if(hcec->TxXferCount == 0) - { - /* Disable Peripheral to write CEC_IER register */ - __HAL_CEC_DISABLE(hcec); - - /* Disable the CEC Transmission Interrupts */ - __HAL_CEC_DISABLE_IT(hcec, CEC_IT_TXBR|CEC_IT_TXEND); - /* Disable the CEC Transmission Error Interrupts */ - __HAL_CEC_DISABLE_IT(hcec, CEC_IER_TX_ALL_ERR); - - /* Enable the Peripheral */ - __HAL_CEC_ENABLE(hcec); - - __HAL_CEC_CLEAR_FLAG(hcec, CEC_FLAG_TXBR|CEC_FLAG_TXEND); - - hcec->State = 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); - - HAL_CEC_TxCpltCallback(hcec); - - return HAL_OK; - } - else - { - if (hcec->TxXferCount == 1) - { - /* if this is the last byte transmission, set TX End of Message (TXEOM) bit */ - __HAL_CEC_LAST_BYTE_TX_SET(hcec); - } - /* clear Tx-Byte request flag */ - __HAL_CEC_CLEAR_FLAG(hcec, CEC_FLAG_TXBR); - hcec->Instance->TXDR = *hcec->pTxBuffPtr++; - hcec->TxXferCount--; - - /* Process Unlocked */ - __HAL_UNLOCK(hcec); - - return HAL_OK; - } - } - else - { - return HAL_BUSY; - } -} - -/** - * @brief Receive data in interrupt mode. - * @param hcec: CEC handle - * @param pData: pointer to received data buffer. - * Note that the received data size is not known beforehand, the latter is known - * when the reception is complete and is stored in hcec->RxXferSize. - * hcec->RxXferSize is the sum of opcodes + operands (0 to 14 operands max). - * If only a header is received, hcec->RxXferSize = 0 - * @retval HAL status - */ -HAL_StatusTypeDef HAL_CEC_Receive_IT(CEC_HandleTypeDef *hcec, uint8_t *pData) -{ - if(hcec->State == HAL_CEC_STATE_READY) - { - if(pData == NULL ) - { - hcec->State = HAL_CEC_STATE_ERROR; - return HAL_ERROR; - } - - /* Process Locked */ - __HAL_LOCK(hcec); - hcec->RxXferSize = 0; - hcec->pRxBuffPtr = pData; - hcec->ErrorCode = HAL_CEC_ERROR_NONE; - /* the IP is moving to a ready to receive state */ - hcec->State = HAL_CEC_STATE_STANDBY_RX; - - /* Disable Peripheral to write CEC_IER register */ - __HAL_CEC_DISABLE(hcec); - - /* Enable the following CEC Reception Error Interrupts: - * Rx overrun - * Rx bit rising error - * Rx short bit period error - * Rx long bit period error - * Rx missing acknowledge */ - __HAL_CEC_ENABLE_IT(hcec, CEC_IER_RX_ALL_ERR); - - /* Process Unlocked */ - __HAL_UNLOCK(hcec); - - /* Enable the following two CEC Reception interrupts: - * Rx Byte Received IT - * End of Reception IT */ - __HAL_CEC_ENABLE_IT(hcec, CEC_IT_RXBR|CEC_IT_RXEND); - - __HAL_CEC_ENABLE(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_GetReceivedFrameSize(CEC_HandleTypeDef *hcec) -{ - return hcec->RxXferSize; -} - -/** - * @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 */ - hcec->ErrorCode = hcec->Instance->ISR; - /* CEC TX missing acknowledge error interrupt occurred -------------------------------------*/ - if((__HAL_CEC_GET_FLAG(hcec, CEC_FLAG_TXACKE) != RESET) && (__HAL_CEC_GET_IT_SOURCE(hcec, CEC_IT_TXACKE) != RESET)) - { - __HAL_CEC_CLEAR_FLAG(hcec, CEC_FLAG_TXACKE); - hcec->State = HAL_CEC_STATE_ERROR; - } - - /* CEC transmit error interrupt occurred --------------------------------------*/ - if((__HAL_CEC_GET_FLAG(hcec, CEC_FLAG_TXERR) != RESET) && (__HAL_CEC_GET_IT_SOURCE(hcec, CEC_IT_TXERR) != RESET)) - { - __HAL_CEC_CLEAR_FLAG(hcec, CEC_FLAG_TXERR); - hcec->State = HAL_CEC_STATE_ERROR; - } - - /* CEC TX underrun error interrupt occurred --------------------------------------*/ - if((__HAL_CEC_GET_FLAG(hcec, CEC_FLAG_TXUDR) != RESET) && (__HAL_CEC_GET_IT_SOURCE(hcec, CEC_IT_TXUDR) != RESET)) - { - __HAL_CEC_CLEAR_FLAG(hcec, CEC_FLAG_TXUDR); - hcec->State = HAL_CEC_STATE_ERROR; - } - - /* CEC TX arbitration error interrupt occurred --------------------------------------*/ - if((__HAL_CEC_GET_FLAG(hcec, CEC_FLAG_ARBLST) != RESET) && (__HAL_CEC_GET_IT_SOURCE(hcec, CEC_IT_ARBLST) != RESET)) - { - __HAL_CEC_CLEAR_FLAG(hcec, CEC_FLAG_ARBLST); - hcec->State = HAL_CEC_STATE_ERROR; - } - - /* CEC RX overrun error interrupt occurred --------------------------------------*/ - if((__HAL_CEC_GET_FLAG(hcec, CEC_FLAG_RXOVR) != RESET) && (__HAL_CEC_GET_IT_SOURCE(hcec, CEC_IT_RXOVR) != RESET)) - { - __HAL_CEC_CLEAR_FLAG(hcec, CEC_FLAG_RXOVR); - hcec->State = HAL_CEC_STATE_ERROR; - } - - /* CEC RX bit rising error interrupt occurred --------------------------------------*/ - if((__HAL_CEC_GET_FLAG(hcec, CEC_FLAG_BRE) != RESET) && (__HAL_CEC_GET_IT_SOURCE(hcec, CEC_IT_BRE) != RESET)) - { - __HAL_CEC_CLEAR_FLAG(hcec, CEC_FLAG_BRE); - hcec->State = HAL_CEC_STATE_ERROR; - } - - /* CEC RX short bit period error interrupt occurred --------------------------------------*/ - if((__HAL_CEC_GET_FLAG(hcec, CEC_FLAG_SBPE) != RESET) && (__HAL_CEC_GET_IT_SOURCE(hcec, CEC_IT_SBPE) != RESET)) - { - __HAL_CEC_CLEAR_FLAG(hcec, CEC_FLAG_SBPE); - hcec->State = HAL_CEC_STATE_ERROR; - } - - /* CEC RX long bit period error interrupt occurred --------------------------------------*/ - if((__HAL_CEC_GET_FLAG(hcec, CEC_FLAG_LBPE) != RESET) && (__HAL_CEC_GET_IT_SOURCE(hcec, CEC_IT_LBPE) != RESET)) - { - __HAL_CEC_CLEAR_FLAG(hcec, CEC_FLAG_LBPE); - hcec->State = HAL_CEC_STATE_ERROR; - } - - /* CEC RX missing acknowledge error interrupt occurred --------------------------------------*/ - if((__HAL_CEC_GET_FLAG(hcec, CEC_FLAG_RXACKE) != RESET) && (__HAL_CEC_GET_IT_SOURCE(hcec, CEC_IT_RXACKE) != RESET)) - { - __HAL_CEC_CLEAR_FLAG(hcec, CEC_FLAG_RXACKE); - hcec->State = HAL_CEC_STATE_ERROR; - } - - if ((hcec->ErrorCode & CEC_ISR_ALL_ERROR) != 0) - { - HAL_CEC_ErrorCallback(hcec); - } - - /* CEC RX byte received interrupt ---------------------------------------------------*/ - if((__HAL_CEC_GET_FLAG(hcec, CEC_FLAG_RXBR) != RESET) && (__HAL_CEC_GET_IT_SOURCE(hcec, CEC_IT_RXBR) != RESET)) - { - /* RXBR IT is cleared during HAL_CEC_Transmit_IT processing */ - CEC_Receive_IT(hcec); - } - - /* CEC RX end received interrupt ---------------------------------------------------*/ - if((__HAL_CEC_GET_FLAG(hcec, CEC_FLAG_RXEND) != RESET) && (__HAL_CEC_GET_IT_SOURCE(hcec, CEC_IT_RXEND) != RESET)) - { - /* RXBR IT is cleared during HAL_CEC_Transmit_IT processing */ - CEC_Receive_IT(hcec); - } - - - /* CEC TX byte request interrupt ------------------------------------------------*/ - if((__HAL_CEC_GET_FLAG(hcec, CEC_FLAG_TXBR) != RESET) &&(__HAL_CEC_GET_IT_SOURCE(hcec, CEC_IT_TXBR) != RESET)) - { - /* TXBR IT is cleared during HAL_CEC_Transmit_IT processing */ - CEC_Transmit_IT(hcec); - } - - /* CEC TX end interrupt ------------------------------------------------*/ - if((__HAL_CEC_GET_FLAG(hcec, CEC_FLAG_TXEND) != RESET) &&(__HAL_CEC_GET_IT_SOURCE(hcec, CEC_IT_TXEND) != RESET)) - { - /* TXEND IT is cleared during HAL_CEC_Transmit_IT processing */ - CEC_Transmit_IT(hcec); - } -} - -/** - * @brief Tx Transfer completed callback - * @param hcec: CEC handle - * @retval None - */ - __weak void HAL_CEC_TxCpltCallback(CEC_HandleTypeDef *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 - * @retval None - */ -__weak void HAL_CEC_RxCpltCallback(CEC_HandleTypeDef *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 CEC error callbacks - * @param hcec: CEC handle - * @retval None - */ - __weak void HAL_CEC_ErrorCallback(CEC_HandleTypeDef *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. -@endverbatim - * @{ - */ -/** - * @brief return the CEC state - * @param hcec: CEC handle - * @retval HAL state - */ -HAL_CEC_StateTypeDef HAL_CEC_GetState(CEC_HandleTypeDef *hcec) -{ - return hcec->State; -} - -/** -* @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; -} - -/** - * @} - */ - -/** - * @brief Send data in interrupt mode - * @param hcec: CEC handle. - * Function called under interruption only, once - * interruptions have been enabled by HAL_CEC_Transmit_IT() - * @retval HAL status - */ -static HAL_StatusTypeDef CEC_Transmit_IT(CEC_HandleTypeDef *hcec) -{ - /* if the IP is already busy or if there is a previous transmission - already pending due to arbitration loss */ - if ((hcec->State == HAL_CEC_STATE_BUSY_TX) - || (__HAL_CEC_GET_TRANSMISSION_START_FLAG(hcec) != RESET)) - { - __HAL_LOCK(hcec); - /* set state to BUSY TX, in case it wasn't set already (case - * of transmission new attempt after arbitration loss) */ - if (hcec->State != HAL_CEC_STATE_BUSY_TX) - { - hcec->State = HAL_CEC_STATE_BUSY_TX; - } - - /* if all data have been sent */ - if(hcec->TxXferCount == 0) - { - /* Disable Peripheral to write CEC_IER register */ - __HAL_CEC_DISABLE(hcec); - - /* Disable the CEC Transmission Interrupts */ - __HAL_CEC_DISABLE_IT(hcec, CEC_IT_TXBR|CEC_IT_TXEND); - /* Disable the CEC Transmission Error Interrupts */ - __HAL_CEC_DISABLE_IT(hcec, CEC_IER_TX_ALL_ERR); - - /* Enable the Peripheral */ - __HAL_CEC_ENABLE(hcec); - - __HAL_CEC_CLEAR_FLAG(hcec,CEC_FLAG_TXBR|CEC_FLAG_TXEND); - - hcec->State = 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); - - HAL_CEC_TxCpltCallback(hcec); - - return HAL_OK; - } - else - { - if (hcec->TxXferCount == 1) - { - /* if this is the last byte transmission, set TX End of Message (TXEOM) bit */ - __HAL_CEC_LAST_BYTE_TX_SET(hcec); - } - /* clear Tx-Byte request flag */ - __HAL_CEC_CLEAR_FLAG(hcec,CEC_FLAG_TXBR); - hcec->Instance->TXDR = *hcec->pTxBuffPtr++; - hcec->TxXferCount--; - - /* Process Unlocked */ - __HAL_UNLOCK(hcec); - - return HAL_OK; - } - } - else - { - return HAL_BUSY; - } -} - - -/** - * @brief Receive data in interrupt mode. - * @param hcec: CEC handle. - * Function called under interruption only, once - * interruptions have been enabled by HAL_CEC_Receive_IT() - * @retval HAL status - */ -static HAL_StatusTypeDef CEC_Receive_IT(CEC_HandleTypeDef *hcec) -{ - uint32_t tempisr; - - /* Three different conditions are tested to carry out the RX IT processing: - * - the IP is in reception stand-by (the IP state is HAL_CEC_STATE_STANDBY_RX) and - * the reception of the first byte is starting - * - a message reception is already on-going (the IP state is HAL_CEC_STATE_BUSY_RX) - * and a new byte is being received - * - a transmission has just been started (the IP state is HAL_CEC_STATE_BUSY_TX) - * but has been interrupted by a new message reception or discarded due to - * arbitration loss: the reception of the first or higher priority message - * (the arbitration winner) is starting */ - if ((hcec->State == HAL_CEC_STATE_STANDBY_RX) - || (hcec->State == HAL_CEC_STATE_BUSY_RX) - || (hcec->State == HAL_CEC_STATE_BUSY_TX)) - { - /* reception is starting */ - hcec->State = HAL_CEC_STATE_BUSY_RX; - tempisr = (uint32_t) (hcec->Instance->ISR); - if ((tempisr & CEC_FLAG_RXBR) != 0) - { - /* Process Locked */ - __HAL_LOCK(hcec); - /* read received byte */ - *hcec->pRxBuffPtr++ = hcec->Instance->RXDR; - /* if last byte has been received */ - if ((tempisr & CEC_FLAG_RXEND) != 0) - { - /* clear IT */ - __HAL_CEC_CLEAR_FLAG(hcec, CEC_FLAG_RXBR|CEC_FLAG_RXEND); - /* RX interrupts are not disabled at this point. - * Indeed, to disable the IT, the IP must be disabled first - * which resets the TXSOM flag. In case of arbitration loss, - * this leads to a transmission abort. - * Therefore, RX interruptions disabling if so required, - * is done in HAL_CEC_RxCpltCallback */ - - /* IP state is moved to READY. - * If the IP must remain in standby mode to listen - * any new message, it is up to HAL_CEC_RxCpltCallback - * to move it again to HAL_CEC_STATE_STANDBY_RX */ - hcec->State = HAL_CEC_STATE_READY; - - /* Call the Process Unlocked before calling the Rx call back API */ - __HAL_UNLOCK(hcec); - HAL_CEC_RxCpltCallback(hcec); - - return HAL_OK; - } - __HAL_CEC_CLEAR_FLAG(hcec, CEC_FLAG_RXBR); - - hcec->RxXferSize++; - /* Process Unlocked */ - __HAL_UNLOCK(hcec); - - return HAL_OK; - } - else - { - return HAL_BUSY; - } - } - else - { - return HAL_BUSY; - } -} -/** - * @} - */ -#endif /* HAL_CEC_MODULE_ENABLED */ -/** - * @} - */ - -/** - * @} - */ - -/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |