How to pass UART_HandleTypeDef *huart trough the funciont?

[Francesco_]

I want pass UART_HandleTypeDef *my_huart at function HAL_UART_Transmit and and mange the response with interrupt. The code is show below but doesn't work. Can you help me?

//This is myfile.c

void myfunc(UART_HandleTypeDef *my_huart)

{

char command[] = "AT\r\n";

HAL_UART_Transmit(my_huart, (uint8_t *)command, sizeof(command)-1, HAL_MAX_DELAY);

}

//In the main

myfunc(&huart1);

//out of main and not call in the main

void USART1_IRQHandler(void)

{

 /* USER CODE BEGIN USART1_IRQn 0 */

 /* USER CODE END USART1_IRQn 0 */

 HAL_UART_IRQHandler(&huart1);

if(((USART1 -> SR) & (1<<5)) == (1<<5))

{

memset(buffer,0,sizeof(buffer));

HAL_UART_Receive(&huart1, (uint8_t *)buffer, sizeof(buffer)-1, HAL_MAX_DELAY);

HAL_UART_Transmit(&huart2, (uint8_t*)buffer, strlen(buffer) , HAL_MAX_DELAY);

USART1 -> SR &= ~(1<<5);

}

}

[Tesla DeLorean]

Ok, don't call blocking functions in the IRQ handler. You shouldn't need to clear the SR, this will occur by actions you take with the DR

​

P​ointer passing in first function seems correct. I'd probably create a string send function and use strlen(), and then use that function rather than have duplicative code.

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The IRQ Handler should call the HAL IRQ routine, which in turn calls your call back function.

​

Use the interrupt form HAL_UART_Transmit_IT() ​

[Francesco_]

Hi @Community member ,

don't call blocking functions in the IRQ handler -> I don't have call HAL_UART_Receive(&huart1,..) and HAL_UART_Transmit(&huart2,..), how should I read the data? Do I have to read directly from the register?

These other points are not clear to me:

The IRQ Handler should call the HAL IRQ routine, which in turn calls your call back function.

Use the interrupt form HAL_UART_Transmit_IT() ​

[Tesla DeLorean]

You can't spend multiple bytes times within the IRQ, you must be brief and leave.

​

You should perhaps create your own buffers and service those in the IRQ Handler, or call back.

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Try reviewing some UART IRQ examples and follow the anticipated flow​