Uart in STM32F4

[mikropart]

Posted on January 31, 2015 at 16:03

I create a program for uart interrupt receiving by cubeMX in ARM-MDK.

I want interrupt receivng from PC(when for example 0xFF received from pc by hyperterminal or docklight). I write bellow program. main() {    while (1)    {         if(HAL_UART_Receive_IT(&huart6, (uint8_t *)aRxBuffer, 8) != HAL_OK)        {             HAL_GPIO_TogglePin(GPIOD,GPIO_PIN_13);             HAL_Delay(0x000000ff);        }         HAL_GPIO_TogglePin(GPIOD,GPIO_PIN_12);         HAL_Delay(0x000000ff);     } } /////////////////////////////////////////////////// void HAL_UART_RxCpltCallback(UART_HandleTypeDef *UartHandle) {     HAL_GPIO_TogglePin(GPIOD,GPIO_PIN_15); } but not work.Please help me.

[waclawek.jan]

Posted on February 02, 2015 at 09:40

You might want to start with reviewing and reproducing the examples contained within the Cube package.

JW

[mikropart]

Posted on February 02, 2015 at 20:29

hi

I read cube example but i don't know. do you have a simple example?

[Tesla DeLorean]

Posted on February 02, 2015 at 21:28

do you have a simple example?

Not a HAL one.

[dhiry2k]

Posted on February 03, 2015 at 15:38 Check HAL example of UART. Check for F3 or F2 one's. basic concept is same in all.

[pcm-lab]

Posted on February 06, 2015 at 12:04

Hi ramin!

while (1)  and  IRQ metod -  not very compatible ;) If you want to call the reception of the cycle, - you ned HAL function HAL_UART_Receive  (NOT  HAL_UART_Receive_IT ! ) as example :   while (1)   {     if (HAL_UART_Receive ( &huart2, aTxBuffer, 8, 5000 ) == HAL_OK)         {          HAL_GPIO_WritePin(GPIOA, GPIO_PIN_5, GPIO_PIN_SET);          HAL_Delay(100);          HAL_UART_Transmit( &huart2, aTxBuffer, 8, 5000 );          HAL_GPIO_WritePin(GPIOA, GPIO_PIN_5, GPIO_PIN_RESET);         } ================================================ If you want to call the reception of the interrupt -use HAL_UART_Receive_IT()  with void USARTx_IRQHandler(void) {   HAL_UART_IRQHandler(& UartHandle); } check whether this function in the file : stm32f4xx_it.c and check - whether this function in the file : stm32f4xx_hal_msp.c HAL_NVIC_EnableIRQ(USART2_IRQn); ==================================================== 

[pcm-lab]

Posted on February 06, 2015 at 12:12

waclawek.jan +1

for sure!

lock in d: \ _ ST_ \ STM32Cube \ Projects \ STM32F401-Discovery \ Examples \ UART \UART_TwoBoards_ComPolling     - a simple method \UART_TwoBoards_ComIT             - based on interrupts \UART_TwoBoards_ComDMA       - DMA on IRQ method

[mikropart]

Posted on February 06, 2015 at 20:09

hi nazarov

I edit my code as bellow(I want use of uart interrupt driven receiving):

//------------------------------------------------------------------------

UART_HandleTypeDef  huart6;

int

main(

void

) {     HAL_Init();     SystemClock_Config();     MX_GPIO_Init();     MX_USART6_UART_Init();     HAL_UART_Receive_IT(&huart6, (uint8_t *)aRxBuffer, 8);    

while

(1)     {         HAL_GPIO_WritePin(GPIOD,GPIO_PIN_13,GPIO_PIN_SET);         HAL_Delay(1000);      } }

void

HAL_UART_RxCpltCallback(UART_HandleTypeDef *UartHandle) {     HAL_GPIO_WritePin(GPIOD,GPIO_PIN_14,GPIO_PIN_SET); } and I look at  stm32f4xx_it.c that contain bellow code:

void

USART6_IRQHandler(

void

) {    HAL_UART_IRQHandler(&huart6); } but  my

problem(

not working HAL_UART_RxCpltCallback()

) exist. do you have any idea? thank.

[mikropart]

Posted on February 06, 2015 at 20:28

and in stm32f4xx_hal_msp.c  I find this code:

/* System interrupt init*/

    HAL_NVIC_SetPriority(USART6_IRQn, 0, 0);     HAL_NVIC_EnableIRQ(USART6_IRQn); thank