Posted on May 03, 2018 at 16:13Hello,
I am sending requests continuously via TCP/IP using my client application. Requests are send with 200 ms interval.
When a request come I am trying to send request to my peripheral and expect an answer, but sometimes UART remain busy(Error Handler occurs when waiting for HAL_UART_STATE_READY) and communication fail. I would like to ask you if I am doing something wrong. Thank you very much.
Here is my function for inquiring result from periph:
void Inquire_result (uint8_t TxBuffer[2])
{
int Timeout = 1000000;
while(huart3.gState != HAL_UART_STATE_READY)
{
Timeout--;
if(Timeout == 0)
Error_Handler();
}
Timeout = 1000000;
if(HAL_UART_Transmit_IT(&huart3, (uint8_t*)TxBuffer, 2) != HAL_OK)
{
Error_Handler();
}
while(huart3.RxState != HAL_UART_STATE_READY)
{
Timeout--;
if(Timeout == 0)
Error_Handler();
}
Timeout = 1000000;
if(HAL_UART_Receive_IT(&huart3, (uint8_t*)aRxBuffer, 4) != HAL_OK)
{
Error_Handler();
}
while(DataRecieved == 0)
{
Timeout--;
if(Timeout == 0)
Error_Handler();
}
}
And here are my callback functions:
void HAL_UART_TxCpltCallback(UART_HandleTypeDef *UartHandle)
{
/* Set transmission flag: transfer complete */
HAL_GPIO_WritePin(GPIOB,GPIO_PIN_9,GPIO_PIN_RESET);
DataRecieved = 0;
}
void HAL_UART_RxCpltCallback(UART_HandleTypeDef *UartHandle)
{
/* Set transmission flag: transfer complete */
HAL_GPIO_WritePin(GPIOB,GPIO_PIN_9,GPIO_PIN_SET);
DataRecieved = 1;
}
And my interrupt priorities:
/* Ethernet peripheral interrupt init */
HAL_NVIC_SetPriority(ETH_IRQn, 2, 0);
HAL_NVIC_EnableIRQ(ETH_IRQn);
/* SysTick_IRQn interrupt configuration */
HAL_NVIC_SetPriority(SysTick_IRQn, 1, 0);
/* USART3 interrupt Init */
HAL_NVIC_SetPriority(USART3_IRQn, 0, 0);
HAL_NVIC_EnableIRQ(USART3_IRQn);
#rs-232 #raw-lwip #stm32f-uart #uart-interrupt
