Posted on May 02, 2016 at 11:11Hi everyone,
I would like to include in my project FreeRTOS a uart queue.
I have already done this with the StdPeriph lib but I'm facing difficulties to migrate from StdPriph to HAL.
My previous project was build like this :
A simple usart task :
void
vUSARTTask(
void
*pvParameters )
{
portTickType xLastWakeTime;
const
portTickType xFrequency = 50;
xLastWakeTime=xTaskGetTickCount();
char
ch;
RxQueue = xQueueCreate( configCOM0_RX_BUFFER_LENGTH,
sizeof
( portCHAR ) );
TxQueue = xQueueCreate( configCOM0_TX_BUFFER_LENGTH,
sizeof
( portCHAR ) );
USART1PutString(pcUsartTaskStartMsg,strlen( pcUsartTaskStartMsg ));
for
( ;; )
{
//Echo back
if
(xQueueReceive( RxQueue, ch, 0 ) == pdPASS)
{
if
( xQueueSend( TxQueue, &ch, 10 ) == pdPASS )
{
USART_ITConfig(USART1, USART_IT_TXE, ENABLE);
}
}
vTaskDelayUntil(&xLastWakeTime,xFrequency);
}
}
And the Usart handler :
void
USART1_IRQHandler(
void
)
{
long
xHigherPriorityTaskWoken = pdFALSE;
uint8_t ch;
//if Receive interrupt
if
(USART_GetITStatus(USART1, USART_IT_RXNE) != RESET)
{
ch=(uint8_t)USART_ReceiveData(USART1);
xQueueSendToBackFromISR( RxQueue, &ch, &xHigherPriorityTaskWoken );
}
if
(USART_GetITStatus(USART1, USART_IT_TXE) != RESET)
{
if
( xQueueReceiveFromISR( TxQueue, &ch, &xHigherPriorityTaskWoken ) )
{
USART_SendData(USART1, ch);
}
else
{
//disable Transmit Data Register empty interrupt
USART_ITConfig(USART1, USART_IT_TXE, DISABLE);
}
}
portEND_SWITCHING_ISR( xHigherPriorityTaskWoken );
}
I used UART_Receive_IT() and UART_Transmit_IT() in order to remplace Uart_ReceiceDATA and Uart_TransmitDATA
My main problem is to find the equivalent of the Usart_GetITStatus() function in the HAL lib
In order to differentiate the Tx of the Rx interrupt
Is there an example of a Rtos queue integrate with a periphic handler of the HAL lib ?
Can you help me to use the function UART_Receive() with queue and IT ?
Thanks a lot
#hal #uart #rtos
