Using 2 UART on STM32?

[antonius]

Dear Members,

I want to read a result from my GPS,

it's Neo 6M

I initialized 2 UARTs UART 1 for PC and UART 2 for GPS,

I got this result :

INIT CODE GPS NEO - 6M....

From GPS : 

Is it receiving properly ?

The code :

 char in[8];

printf("From GPS : ");

  HAL_UART_Receive(&huart2, (uint8_t *)in, 8, 1000);

HAL_UART_Transmit(&huart1, (uint8_t *)in, 8, 1);

printf("\r\n");

Green LED on GPS module is blinking...

Thanks

[LACTIC]

I have some confuse regarding such type of function

"void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart"

like this also

"HAL_ADC_ConvCpltCallback(ADC_HandleTypeDef* hadc)"

they are only use before main or any where in main because i am using ADC my program goes in function where is ADC value is used but its' not show me ADC value on my screen so i want to 0 use "HAL_ADC_ConvCpltCallback(ADC_HandleTypeDef* hadc)" function. it will help or not

[antonius]

is void USART_GPS_IRQHandler(void) // Sync and Queue NMEA Sentences

equal to

void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart) ?

so I will move the content of that function to this function ?

[antonius]

I don't understand the code ?? how can I connect it with my STM32L152RE ?

[antonius]

Here's my STM32CubeMX file, has IRQ for USART2 been enabled ?

I recheck it, it is, but may be something else missing ?

anyone ?

[antonius]

the code :

/* USER CODE BEGIN 0 */
void startRx()
{
  // pretty inefficient but will probably be ok for 9600
  uint32_t offset = (rxChars & 0x1f); // so count is actual receive count but offset is buffer index
  HAL_UART_Receive_IT(MYUART, rxBuffer+offset, 1);
}
 
void HAL_UART_RxCpltCallback(UART_HandleTypeDef* huart)
{
 if (huart==MYUART)
 {
 rxChars += 1; // char is already in our buffer, inc count and bail out quickly since this is a callback
 }
}
 
 
				
/* USER CODE END 0 */
 
in main :
	printf("From GPS : ");
		  if (lastRxChars != rxChars)
    {
			printf("now I have %lu chars\n", rxChars);
			lastRxChars = rxChars;
			startRx();
    }
 
it never gets inside if ....??

[antonius]

without

 if (lastRxChars != rxChars)

I got :

   INIT CODE GPS NEO - 6M....

From GPS : now I have 0 chars

INIT CODE GPS NEO - 6M....

[Tesla DeLorean]

It is the USART2_IRQHandler() or whatever the #define says it is.

The HAL Callback methods are far too circuitous and not really compatible with the byte-at-a-time interrupts coming from the USART. NMEA data rarely falls on convenient 10 or 100 byte boundaries.

[Tesla DeLorean]

Ok, so we're about 25 questions into the thread before the specific STM32 part is identified.

What board is this on? A standard NUCLEO board, or something else?

It would take some effort on my part to port this to the L1 platform.

[antonius]

STM32L152LE

It's Nucleo board without a programmer on it, so I use ST-link for it,

Please find STM32CubeMX file below, is it right ?

Thanks

[antonius]

STM32L152 doesn't have ICR register ...??

can I disable it ?