/**
  * @brief  Configures the IRDA peripheral. 
  * @param  hirda: Pointer to a IRDA_HandleTypeDef structure that contains
  *                the configuration information for the specified IRDA module.
  * @retval None
  */
static void IRDA_SetConfig(IRDA_HandleTypeDef *hirda)
{
  /* Check the parameters */
  assert_param(IS_IRDA_BAUDRATE(hirda->Init.BaudRate));  
  assert_param(IS_IRDA_WORD_LENGTH(hirda->Init.WordLength));
  assert_param(IS_IRDA_PARITY(hirda->Init.Parity));
  assert_param(IS_IRDA_MODE(hirda->Init.Mode));
  
  /*------- IRDA-associated USART registers setting : CR2 Configuration ------*/
  /* Clear STOP[13:12] bits */
  CLEAR_BIT(hirda->Instance->CR2, USART_CR2_STOP);
  
  /*------- IRDA-associated USART registers setting : CR1 Configuration ------*/
  /* Configure the USART Word Length, Parity and mode: 
     Set the M bits according to hirda->Init.WordLength value 
     Set PCE and PS bits according to hirda->Init.Parity value
     Set TE and RE bits according to hirda->Init.Mode value */
  MODIFY_REG(hirda->Instance->CR1,
             ((uint32_t)(USART_CR1_M | USART_CR1_PCE | USART_CR1_PS | USART_CR1_TE | USART_CR1_RE)),
             (uint32_t)hirda->Init.WordLength | hirda->Init.Parity | hirda->Init.Mode);
  
  /*------- IRDA-associated USART registers setting : CR3 Configuration ------*/
  /* Clear CTSE and RTSE bits */
  CLEAR_BIT(hirda->Instance->CR3, (USART_CR3_RTSE | USART_CR3_CTSE));
  
  /*------- IRDA-associated USART registers setting : BRR Configuration ------*/
  if(hirda->Instance == USART1)
  {
    hirda->Instance->BRR = IRDA_BRR(HAL_RCC_GetPCLK2Freq(), hirda->Init.BaudRate);
  }
  else
  {
    hirda->Instance->BRR = IRDA_BRR(HAL_RCC_GetPCLK1Freq(), hirda->Init.BaudRate);
  }
}
/**
  * @brief Configure the IRDA peripheral 
  * @param hirda: irda handle
  * @retval None
  */
static HAL_StatusTypeDef IRDA_SetConfig(IRDA_HandleTypeDef *hirda)
{
  uint32_t tmpreg                     = 0x00000000;
  IRDA_ClockSourceTypeDef clocksource = IRDA_CLOCKSOURCE_UNDEFINED;
  HAL_StatusTypeDef ret               = HAL_OK;  
  
  /* Check the communication parameters */ 
  assert_param(IS_IRDA_BAUDRATE(hirda->Init.BaudRate));  
  assert_param(IS_IRDA_WORD_LENGTH(hirda->Init.WordLength));
  assert_param(IS_IRDA_PARITY(hirda->Init.Parity));
  assert_param(IS_IRDA_TX_RX_MODE(hirda->Init.Mode));
  assert_param(IS_IRDA_PRESCALER(hirda->Init.Prescaler)); 
  assert_param(IS_IRDA_POWERMODE(hirda->Init.PowerMode)); 

  /*-------------------------- USART CR1 Configuration -----------------------*/        
  /* Configure the IRDA Word Length, Parity and transfer Mode: 
     Set the M bits according to hirda->Init.WordLength value 
     Set PCE and PS bits according to hirda->Init.Parity value
     Set TE and RE bits according to hirda->Init.Mode value */
  tmpreg = (uint32_t)hirda->Init.WordLength | hirda->Init.Parity | hirda->Init.Mode ;
  
  MODIFY_REG(hirda->Instance->CR1, IRDA_CR1_FIELDS, tmpreg);
  
  /*-------------------------- USART CR3 Configuration -----------------------*/
  MODIFY_REG(hirda->Instance->CR3, USART_CR3_IRLP, hirda->Init.PowerMode);
    
  /*-------------------------- USART GTPR Configuration ----------------------*/  
  MODIFY_REG(hirda->Instance->GTPR, USART_GTPR_PSC, hirda->Init.Prescaler);
  
  /*-------------------------- USART BRR Configuration -----------------------*/ 
  __HAL_IRDA_GETCLOCKSOURCE(hirda, clocksource);
  switch (clocksource)
  {
    case IRDA_CLOCKSOURCE_PCLK1: 
      hirda->Instance->BRR = (uint16_t)(HAL_RCC_GetPCLK1Freq() / hirda->Init.BaudRate);
      break;
    case IRDA_CLOCKSOURCE_PCLK2: 
      hirda->Instance->BRR = (uint16_t)(HAL_RCC_GetPCLK2Freq() / hirda->Init.BaudRate);
      break;
    case IRDA_CLOCKSOURCE_HSI: 
      hirda->Instance->BRR = (uint16_t)(HSI_VALUE / hirda->Init.BaudRate); 
      break; 
    case IRDA_CLOCKSOURCE_SYSCLK:  
      hirda->Instance->BRR = (uint16_t)(HAL_RCC_GetSysClockFreq() / hirda->Init.BaudRate);
      break;  
    case IRDA_CLOCKSOURCE_LSE:                
      hirda->Instance->BRR = (uint16_t)(LSE_VALUE / hirda->Init.BaudRate); 
      break;      
    case IRDA_CLOCKSOURCE_UNDEFINED:                
    default:                
      ret = HAL_ERROR; 
      break;              
  } 
  
  return ret;  
}
Exemple #3
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/**
  * @brief  Configures the IRDA peripheral. 
  * @param  hirda: pointer to a IRDA_HandleTypeDef structure that contains
  *                the configuration information for the specified IRDA module.
  * @retval None
  */
static void IRDA_SetConfig(IRDA_HandleTypeDef *hirda)
{
  uint32_t tmpreg = 0x00;
  
  /* Check the parameters */
  assert_param(IS_IRDA_INSTANCE(hirda->Instance));
  assert_param(IS_IRDA_BAUDRATE(hirda->Init.BaudRate));  
  assert_param(IS_IRDA_WORD_LENGTH(hirda->Init.WordLength));
  assert_param(IS_IRDA_PARITY(hirda->Init.Parity));
  assert_param(IS_IRDA_MODE(hirda->Init.Mode));
  
  /*-------------------------- IRDA CR2 Configuration ------------------------*/
  /* Clear STOP[13:12] bits */
  hirda->Instance->CR2 &= (uint32_t)~((uint32_t)USART_CR2_STOP);
  
  /*-------------------------- USART CR1 Configuration -----------------------*/
  tmpreg = hirda->Instance->CR1;
  
  /* Clear M, PCE, PS, TE and RE bits */
  tmpreg &= (uint32_t)~((uint32_t)(USART_CR1_M | USART_CR1_PCE | USART_CR1_PS | USART_CR1_TE | \
    USART_CR1_RE));
  
  /* Configure the USART Word Length, Parity and mode: 
     Set the M bits according to hirda->Init.WordLength value 
     Set PCE and PS bits according to hirda->Init.Parity value
     Set TE and RE bits according to hirda->Init.Mode value */
  tmpreg |= (uint32_t)hirda->Init.WordLength | hirda->Init.Parity | hirda->Init.Mode;
  
  /* Write to USART CR1 */
  hirda->Instance->CR1 = (uint32_t)tmpreg;
  
  /*-------------------------- USART CR3 Configuration -----------------------*/  
  /* Clear CTSE and RTSE bits */
  hirda->Instance->CR3 &= (uint32_t)~((uint32_t)(USART_CR3_RTSE | USART_CR3_CTSE));
  
  /*-------------------------- USART BRR Configuration -----------------------*/
  if((hirda->Instance == USART1) || (hirda->Instance == USART6))
  {
    hirda->Instance->BRR = __IRDA_BRR(HAL_RCC_GetPCLK2Freq(), hirda->Init.BaudRate);
  }
  else
  {
    hirda->Instance->BRR = __IRDA_BRR(HAL_RCC_GetPCLK1Freq(), hirda->Init.BaudRate);
  }
}