/**
* @brief DeInitializes the IRDA peripheral
* @param hirda: IRDA handle
* @retval HAL status
*/
HAL_StatusTypeDef HAL_IRDA_DeInit(IRDA_HandleTypeDef *hirda)
{
/* Check the IRDA handle allocation */
if(hirda == NULL)
{
return HAL_ERROR;
}
/* Check the USART/UART associated to the IRDA handle */
assert_param(IS_IRDA_INSTANCE(hirda->Instance));
hirda->State = HAL_IRDA_STATE_BUSY;
/* DeInit the low level hardware */
HAL_IRDA_MspDeInit(hirda);
/* Disable the Peripheral */
__HAL_IRDA_DISABLE(hirda);
hirda->ErrorCode = HAL_IRDA_ERROR_NONE;
hirda->State = HAL_IRDA_STATE_RESET;
/* Release Lock */
__HAL_UNLOCK(hirda);
return HAL_OK;
}
/**
* @brief Initializes the IRDA mode according to the specified
* parameters in the IRDA_InitTypeDef and create the associated handle.
* @param hirda: Pointer to a IRDA_HandleTypeDef structure that contains
* the configuration information for the specified IRDA module.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_IRDA_Init(IRDA_HandleTypeDef *hirda)
{
/* Check the IRDA handle allocation */
if(hirda == NULL)
{
return HAL_ERROR;
}
/* Check the IRDA instance parameters */
assert_param(IS_IRDA_INSTANCE(hirda->Instance));
/* Check the IRDA mode parameter in the IRDA handle */
assert_param(IS_IRDA_POWERMODE(hirda->Init.IrDAMode));
if(hirda->State == HAL_IRDA_STATE_RESET)
{
/* Allocate lock resource and initialize it */
hirda->Lock = HAL_UNLOCKED;
/* Init the low level hardware */
HAL_IRDA_MspInit(hirda);
}
hirda->State = HAL_IRDA_STATE_BUSY;
/* Disable the IRDA peripheral */
__HAL_IRDA_DISABLE(hirda);
/* Set the IRDA communication parameters */
IRDA_SetConfig(hirda);
/* In IrDA mode, the following bits must be kept cleared:
- LINEN, STOP and CLKEN bits in the USART_CR2 register,
- SCEN and HDSEL bits in the USART_CR3 register.*/
CLEAR_BIT(hirda->Instance->CR2, (USART_CR2_LINEN | USART_CR2_STOP | USART_CR2_CLKEN));
CLEAR_BIT(hirda->Instance->CR3, (USART_CR3_SCEN | USART_CR3_HDSEL));
/* Enable the IRDA peripheral */
__HAL_IRDA_ENABLE(hirda);
/* Set the prescaler */
MODIFY_REG(hirda->Instance->GTPR, USART_GTPR_PSC, hirda->Init.Prescaler);
/* Configure the IrDA mode */
MODIFY_REG(hirda->Instance->CR3, USART_CR3_IRLP, hirda->Init.IrDAMode);
/* Enable the IrDA mode by setting the IREN bit in the CR3 register */
SET_BIT(hirda->Instance->CR3, USART_CR3_IREN);
/* Initialize the IRDA state*/
hirda->ErrorCode = HAL_IRDA_ERROR_NONE;
hirda->State= HAL_IRDA_STATE_READY;
return HAL_OK;
}
/**
* @brief Initialize the IRDA mode according to the specified
* parameters in the IRDA_InitTypeDef and initialize the associated handle.
* @param hirda: Pointer to a IRDA_HandleTypeDef structure that contains
* the configuration information for the specified IRDA module.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_IRDA_Init(IRDA_HandleTypeDef *hirda)
{
/* Check the IRDA handle allocation */
if(hirda == NULL)
{
return HAL_ERROR;
}
/* Check the USART/UART associated to the IRDA handle */
assert_param(IS_IRDA_INSTANCE(hirda->Instance));
if(hirda->gState == HAL_IRDA_STATE_RESET)
{
/* Allocate lock resource and initialize it */
hirda->Lock = HAL_UNLOCKED;
/* Init the low level hardware : GPIO, CLOCK */
HAL_IRDA_MspInit(hirda);
}
hirda->gState = HAL_IRDA_STATE_BUSY;
/* Disable the Peripheral to update the configuration registers */
__HAL_IRDA_DISABLE(hirda);
/* Set the IRDA Communication parameters */
if (IRDA_SetConfig(hirda) == HAL_ERROR)
{
return HAL_ERROR;
}
/* In IRDA mode, the following bits must be kept cleared:
- LINEN, STOP and CLKEN bits in the USART_CR2 register,
- SCEN and HDSEL bits in the USART_CR3 register.*/
hirda->Instance->CR2 &= ~(USART_CR2_LINEN | USART_CR2_CLKEN | USART_CR2_STOP);
hirda->Instance->CR3 &= ~(USART_CR3_SCEN | USART_CR3_HDSEL);
/* set the UART/USART in IRDA mode */
hirda->Instance->CR3 |= USART_CR3_IREN;
/* Enable the Peripheral */
__HAL_IRDA_ENABLE(hirda);
/* TEACK and/or REACK to check before moving hirda->gState and hirda->RxState to Ready */
return (IRDA_CheckIdleState(hirda));
}
/**
* @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);
}
}
/**
* @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_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 */
CLEAR_BIT(hirda->Instance->CR2, USART_CR2_STOP);
/*-------------------------- USART 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);
/*-------------------------- USART CR3 Configuration -----------------------*/
/* Clear CTSE and RTSE bits */
CLEAR_BIT(hirda->Instance->CR3, (USART_CR3_RTSE | USART_CR3_CTSE));
/*-------------------------- USART 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);
}
}
