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			677 lines
		
	
	
		
			22 KiB
		
	
	
	
		
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			677 lines
		
	
	
		
			22 KiB
		
	
	
	
		
			C
		
	
	
/**
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  ******************************************************************************
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  * @file    stm32f0xx_hal_cec.c
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  * @author  MCD Application Team
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  * @brief   CEC HAL module driver.
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  *          This file provides firmware functions to manage the following 
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  *          functionalities of the High Definition Multimedia Interface 
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  *          Consumer Electronics Control Peripheral (CEC).
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  *           + Initialization and de-initialization functions
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  *           + IO operation functions
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  *           + Peripheral Control functions
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  *
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  *           
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  @verbatim       
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 ===============================================================================
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                        ##### How to use this driver #####
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 ===============================================================================
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    [..]
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    The CEC HAL driver can be used as follow:
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    (#) Declare a CEC_HandleTypeDef handle structure.
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    (#) Initialize the CEC low level resources by implementing the HAL_CEC_MspInit ()API:
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        (##) Enable the CEC interface clock.
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        (##) CEC pins configuration:
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            (+) Enable the clock for the CEC GPIOs.
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            (+) Configure these CEC pins as alternate function pull-up.
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        (##) NVIC configuration if you need to use interrupt process (HAL_CEC_Transmit_IT()
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             and HAL_CEC_Receive_IT() APIs):
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            (+) Configure the CEC interrupt priority.
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            (+) Enable the NVIC CEC IRQ handle.
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            (@) The specific CEC interrupts (Transmission complete interrupt, 
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                RXNE interrupt and Error Interrupts) will be managed using the macros
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                __HAL_CEC_ENABLE_IT() and __HAL_CEC_DISABLE_IT() inside the transmit 
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                and receive process.
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    (#) Program the Signal Free Time (SFT) and SFT option, Tolerance, reception stop in
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        in case of Bit Rising Error, Error-Bit generation conditions, device logical
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        address and Listen mode in the hcec Init structure.
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    (#) Initialize the CEC registers by calling the HAL_CEC_Init() API.
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    (@) This API (HAL_CEC_Init()) configures also the low level Hardware GPIO, CLOCK, CORTEX...etc)
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        by calling the customed HAL_CEC_MspInit() API.
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  @endverbatim
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  ******************************************************************************
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  * @attention
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  *
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  * <h2><center>© COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
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  *
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  * Redistribution and use in source and binary forms, with or without modification,
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  * are permitted provided that the following conditions are met:
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  *   1. Redistributions of source code must retain the above copyright notice,
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  *      this list of conditions and the following disclaimer.
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  *   2. Redistributions in binary form must reproduce the above copyright notice,
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  *      this list of conditions and the following disclaimer in the documentation
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  *      and/or other materials provided with the distribution.
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  *   3. Neither the name of STMicroelectronics nor the names of its contributors
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  *      may be used to endorse or promote products derived from this software
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  *      without specific prior written permission.
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  *
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  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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  *
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  ******************************************************************************  
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  */
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/* Includes ------------------------------------------------------------------*/
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#include "stm32f0xx_hal.h"
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#ifdef HAL_CEC_MODULE_ENABLED
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#if defined(STM32F042x6) || defined(STM32F048xx) ||\
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    defined(STM32F051x8) || defined(STM32F058xx) ||\
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    defined(STM32F071xB) || defined(STM32F072xB) || defined(STM32F078xx) ||\
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    defined(STM32F091xC) || defined (STM32F098xx)
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/** @addtogroup STM32F0xx_HAL_Driver
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  * @{
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  */
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/** @defgroup CEC CEC 
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  * @brief HAL CEC module driver
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  * @{
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  */
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/* Private typedef -----------------------------------------------------------*/
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/* Private define ------------------------------------------------------------*/
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/** @defgroup CEC_Private_Constants CEC Private Constants
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  * @{
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  */
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/**
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  * @}
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  */
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/* Private macro -------------------------------------------------------------*/
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/* Private variables ---------------------------------------------------------*/
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/* Private function prototypes -----------------------------------------------*/
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/** @defgroup CEC_Private_Functions CEC Private Functions
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  * @{
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  */
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/**
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  * @}
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  */
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/* Exported functions ---------------------------------------------------------*/
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/** @defgroup CEC_Exported_Functions CEC Exported Functions
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  * @{
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  */
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/** @defgroup CEC_Exported_Functions_Group1 Initialization and de-initialization functions
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  *  @brief    Initialization and Configuration functions 
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  *
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@verbatim                                                
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===============================================================================
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            ##### Initialization and Configuration functions #####
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 ===============================================================================  
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    [..]
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    This subsection provides a set of functions allowing to initialize the CEC
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      (+) The following parameters need to be configured: 
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        (++) SignalFreeTime
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        (++) Tolerance 
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        (++) BRERxStop                 (RX stopped or not upon Bit Rising Error)
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        (++) BREErrorBitGen            (Error-Bit generation in case of Bit Rising Error)
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        (++) LBPEErrorBitGen           (Error-Bit generation in case of Long Bit Period Error)
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        (++) BroadcastMsgNoErrorBitGen (Error-bit generation in case of broadcast message error)
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        (++) SignalFreeTimeOption      (SFT Timer start definition)
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        (++) OwnAddress                (CEC device address)
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        (++) ListenMode
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@endverbatim
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  * @{
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  */
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/**
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  * @brief Initializes the CEC mode according to the specified
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  *         parameters in the CEC_InitTypeDef and creates the associated handle .
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  * @param hcec CEC handle
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  * @retval HAL status
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  */
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HAL_StatusTypeDef HAL_CEC_Init(CEC_HandleTypeDef *hcec)
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{  
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  /* Check the CEC handle allocation */
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  if((hcec == NULL) ||(hcec->Init.RxBuffer == NULL))
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  {
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    return HAL_ERROR;
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  }
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  /* Check the parameters */ 
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  assert_param(IS_CEC_ALL_INSTANCE(hcec->Instance));
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  assert_param(IS_CEC_SIGNALFREETIME(hcec->Init.SignalFreeTime));
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  assert_param(IS_CEC_TOLERANCE(hcec->Init.Tolerance));  
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  assert_param(IS_CEC_BRERXSTOP(hcec->Init.BRERxStop));
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  assert_param(IS_CEC_BREERRORBITGEN(hcec->Init.BREErrorBitGen));
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  assert_param(IS_CEC_LBPEERRORBITGEN(hcec->Init.LBPEErrorBitGen));
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  assert_param(IS_CEC_BROADCASTERROR_NO_ERRORBIT_GENERATION(hcec->Init.BroadcastMsgNoErrorBitGen));
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  assert_param(IS_CEC_SFTOP(hcec->Init.SignalFreeTimeOption)); 
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  assert_param(IS_CEC_LISTENING_MODE(hcec->Init.ListenMode));
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  assert_param(IS_CEC_OWN_ADDRESS(hcec->Init.OwnAddress));  
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  if(hcec->gState == HAL_CEC_STATE_RESET)
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  {
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    /* Allocate lock resource and initialize it */
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    hcec->Lock = HAL_UNLOCKED;
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    /* Init the low level hardware : GPIO, CLOCK */
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    HAL_CEC_MspInit(hcec);
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  }
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  hcec->gState = HAL_CEC_STATE_BUSY;
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  /* Disable the Peripheral */
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  __HAL_CEC_DISABLE(hcec);
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  /* Write to CEC Control Register */
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  hcec->Instance->CFGR = hcec->Init.SignalFreeTime | hcec->Init.Tolerance | hcec->Init.BRERxStop|\
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                         hcec->Init.BREErrorBitGen | hcec->Init.LBPEErrorBitGen | hcec->Init.BroadcastMsgNoErrorBitGen |\
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			 hcec->Init.SignalFreeTimeOption |((uint32_t)(hcec->Init.OwnAddress)<<16U) |\
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                         hcec->Init.ListenMode;
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  /* Enable the following CEC Transmission/Reception interrupts as
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   * well as the following CEC Transmission/Reception Errors interrupts 
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   * Rx Byte Received IT 
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   * End of Reception IT 
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   * Rx overrun
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   * Rx bit rising error
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   * Rx short bit period error
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   * Rx long bit period error
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   * Rx missing acknowledge
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   * Tx Byte Request IT 
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   * End of Transmission IT
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   * Tx Missing Acknowledge IT
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   * Tx-Error IT
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   * Tx-Buffer Underrun IT 
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   * Tx arbitration lost   */
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 __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);
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  /* Enable the CEC Peripheral */
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  __HAL_CEC_ENABLE(hcec);
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  hcec->ErrorCode = HAL_CEC_ERROR_NONE;
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  hcec->gState = HAL_CEC_STATE_READY;
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  hcec->RxState = HAL_CEC_STATE_READY;
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  return HAL_OK;
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}
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/**
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  * @brief DeInitializes the CEC peripheral 
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  * @param hcec CEC handle
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  * @retval HAL status
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  */
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HAL_StatusTypeDef HAL_CEC_DeInit(CEC_HandleTypeDef *hcec)
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{
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  /* Check the CEC handle allocation */
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  if(hcec == NULL)
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  {
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    return HAL_ERROR;
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  }
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  /* Check the parameters */
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  assert_param(IS_CEC_ALL_INSTANCE(hcec->Instance));
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  hcec->gState = HAL_CEC_STATE_BUSY;
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  /* DeInit the low level hardware */
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  HAL_CEC_MspDeInit(hcec);
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  /* Disable the Peripheral */
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  __HAL_CEC_DISABLE(hcec);
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  /* Clear Flags */
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  __HAL_CEC_CLEAR_FLAG(hcec,CEC_FLAG_TXEND|CEC_FLAG_TXBR|CEC_FLAG_RXBR|CEC_FLAG_RXEND|CEC_ISR_ALL_ERROR);
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  /* Disable the following CEC Transmission/Reception interrupts as
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   * well as the following CEC Transmission/Reception Errors interrupts 
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   * Rx Byte Received IT 
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   * End of Reception IT 
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   * Rx overrun
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   * Rx bit rising error
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   * Rx short bit period error
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   * Rx long bit period error
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   * Rx missing acknowledge
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   * Tx Byte Request IT 
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   * End of Transmission IT
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   * Tx Missing Acknowledge IT
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   * Tx-Error IT
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   * Tx-Buffer Underrun IT 
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   * Tx arbitration lost   */
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  __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);
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  hcec->ErrorCode = HAL_CEC_ERROR_NONE;
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  hcec->gState = HAL_CEC_STATE_RESET;
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  hcec->RxState = HAL_CEC_STATE_RESET;
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  /* Process Unlock */
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  __HAL_UNLOCK(hcec);
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  return HAL_OK;
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}
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/**
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  * @brief Initializes the Own Address of the CEC device
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  * @param hcec CEC handle
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  * @param  CEC_OwnAddress The CEC own address.  
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  * @retval HAL status
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  */
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HAL_StatusTypeDef HAL_CEC_SetDeviceAddress(CEC_HandleTypeDef *hcec, uint16_t CEC_OwnAddress)
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{
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  /* Check the parameters */
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  assert_param(IS_CEC_OWN_ADDRESS(CEC_OwnAddress));
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  if ((hcec->gState == HAL_CEC_STATE_READY) && (hcec->RxState == HAL_CEC_STATE_READY))
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  { 
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    /* Process Locked */
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    __HAL_LOCK(hcec); 
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    hcec->gState = HAL_CEC_STATE_BUSY;
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    /* Disable the Peripheral */
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    __HAL_CEC_DISABLE(hcec);
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    if(CEC_OwnAddress != CEC_OWN_ADDRESS_NONE)
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    {
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      hcec->Instance->CFGR |= ((uint32_t)CEC_OwnAddress<<16U);
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    }
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    else
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    {
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      hcec->Instance->CFGR &= ~(CEC_CFGR_OAR);
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    }
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    hcec->gState = HAL_CEC_STATE_READY;
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    hcec->ErrorCode = HAL_CEC_ERROR_NONE;
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    /* Process Unlocked */
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    __HAL_UNLOCK(hcec); 
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    /* Enable the Peripheral */
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    __HAL_CEC_ENABLE(hcec);
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    return  HAL_OK; 
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  }
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  else
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  {
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    return HAL_BUSY;
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  }
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}
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/**
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  * @brief CEC MSP Init
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  * @param hcec CEC handle
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  * @retval None
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  */
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 __weak void HAL_CEC_MspInit(CEC_HandleTypeDef *hcec)
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{
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  /* Prevent unused argument(s) compilation warning */
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  UNUSED(hcec);
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  /* NOTE : This function should not be modified, when the callback is needed,
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            the HAL_CEC_MspInit can be implemented in the user file
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   */ 
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}
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/**
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  * @brief CEC MSP DeInit
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  * @param hcec CEC handle
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  * @retval None
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  */
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 __weak void HAL_CEC_MspDeInit(CEC_HandleTypeDef *hcec)
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{
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  /* Prevent unused argument(s) compilation warning */
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  UNUSED(hcec);
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  /* NOTE : This function should not be modified, when the callback is needed,
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            the HAL_CEC_MspDeInit can be implemented in the user file
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   */ 
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}
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/**
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  * @}
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  */
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/** @defgroup CEC_Exported_Functions_Group2 Input and Output operation functions 
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  *  @brief CEC Transmit/Receive functions 
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  *
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@verbatim   
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 ===============================================================================
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                      ##### IO operation functions ##### 
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 ===============================================================================  
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    This subsection provides a set of functions allowing to manage the CEC data transfers.
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    (#) The CEC handle must contain the initiator (TX side) and the destination (RX side)
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        logical addresses (4-bit long addresses, 0x0F for broadcast messages destination)
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    (#) The communication is performed using Interrupts. 
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           These API's return the HAL status.
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           The end of the data processing will be indicated through the 
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           dedicated CEC IRQ when using Interrupt mode.
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           The HAL_CEC_TxCpltCallback(), HAL_CEC_RxCpltCallback() user callbacks 
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           will be executed respectivelly at the end of the transmit or Receive process
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           The HAL_CEC_ErrorCallback()user callback will be executed when a communication 
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           error is detected
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    (#) API's with Interrupt are :
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         (+) HAL_CEC_Transmit_IT()
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         (+) HAL_CEC_IRQHandler()
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    (#) A set of User Callbacks are provided:
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         (+) HAL_CEC_TxCpltCallback()
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         (+) HAL_CEC_RxCpltCallback()
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         (+) HAL_CEC_ErrorCallback()
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@endverbatim
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  * @{
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  */
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/**
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  * @brief Send data in interrupt mode 
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  * @param hcec CEC handle 
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  * @param InitiatorAddress Initiator address
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  * @param DestinationAddress destination logical address      
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  * @param pData pointer to input byte data buffer
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  * @param Size amount of data to be sent in bytes (without counting the header).
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  *              0 means only the header is sent (ping operation).
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  *              Maximum TX size is 15 bytes (1 opcode and up to 14 operands).
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  * @retval HAL status
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  */  
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HAL_StatusTypeDef HAL_CEC_Transmit_IT(CEC_HandleTypeDef *hcec, uint8_t InitiatorAddress, uint8_t DestinationAddress, uint8_t *pData, uint32_t Size)
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{
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  /* if the IP isn't already busy and if there is no previous transmission
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     already pending due to arbitration lost */
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  if (hcec->gState == HAL_CEC_STATE_READY) 
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  {    
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    if((pData == NULL ) && (Size > 0U)) 
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    {
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      return  HAL_ERROR;                                    
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    }
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    assert_param(IS_CEC_ADDRESS(DestinationAddress)); 
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    assert_param(IS_CEC_ADDRESS(InitiatorAddress)); 
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    assert_param(IS_CEC_MSGSIZE(Size));
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    /* Process Locked */
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    __HAL_LOCK(hcec);
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    hcec->pTxBuffPtr = pData;
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    hcec->gState = HAL_CEC_STATE_BUSY_TX;
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    hcec->ErrorCode = HAL_CEC_ERROR_NONE;
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    /* initialize the number of bytes to send,
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     * 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 /* defined(STM32F042x6) || defined(STM32F048xx) || defined(STM32F051x8) || defined(STM32F058xx) || */
 | 
						|
       /* defined(STM32F071xB) || defined(STM32F072xB) || defined(STM32F078xx) || */
 | 
						|
       /* defined(STM32F091xC) || defined (STM32F098xx) */
 | 
						|
 | 
						|
#endif /* HAL_CEC_MODULE_ENABLED */
 | 
						|
 | 
						|
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
 |