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发表于 2015-4-6 20:20:08
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上周六拿到板子,因为有事,今天才开箱,用Cube玩了下,也是进不了中断,后来在使用HAL_UART_Receive_IT以后就可以进了,发送也是,中断方式用HAL_UART_Transmit_IT。瞎捣鼓,第一次接触STM32,坛主能帮忙分析下什么原因不。
/**
* @brief Receives an amount of data in non blocking mode
* @param huart: pointer to a UART_HandleTypeDef structure that contains
* the configuration information for the specified UART module.
* @param pData: Pointer to data buffer
* @param Size: Amount of data to be received
* @retval HAL status
*/
HAL_StatusTypeDef HAL_UART_Receive_IT(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size)
{
uint32_t tmp = 0;
tmp = huart->State;
if((tmp == HAL_UART_STATE_READY) || (tmp == HAL_UART_STATE_BUSY_TX))
{
if((pData == NULL ) || (Size == 0))
{
return HAL_ERROR;
}
/* Process Locked */
__HAL_LOCK(huart);
huart->pRxBuffPtr = pData;
huart->RxXferSize = Size;
huart->RxXferCount = Size;
huart->ErrorCode = HAL_UART_ERROR_NONE;
/* Check if a transmit process is ongoing or not */
if(huart->State == HAL_UART_STATE_BUSY_TX)
{
huart->State = HAL_UART_STATE_BUSY_TX_RX;
}
else
{
huart->State = HAL_UART_STATE_BUSY_RX;
}
/* Enable the UART Parity Error Interrupt */
__HAL_UART_ENABLE_IT(huart, UART_IT_PE);
/* Enable the UART Error Interrupt: (Frame error, noise error, overrun error) */
__HAL_UART_ENABLE_IT(huart, UART_IT_ERR);
/* Process Unlocked */
__HAL_UNLOCK(huart);
/* Enable the UART Data Register not empty Interrupt */
__HAL_UART_ENABLE_IT(huart, UART_IT_RXNE);
return HAL_OK;
}
else
{
return HAL_BUSY;
}
} |
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