/**
* @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));
}