STM32F407 Buffer printing HAL_UART_Transmit

[davidec]

Good morning everyone, after collecting some data and storing it in various buffers, I am trying to write them to the serial port for further processing. I am experiencing issues as I can see that something is being written to the serial port, but not all the samples in the buffer are being printed. Any suggestions?

  while (1)

  {

  HAL_UART_Receive (&huart2, UART1_rxBuffer, 1, 5000); //receive and store string

  if(UART1_rxBuffer[0] == 115){

  HAL_UART_Transmit(&huart2, UART1_rxBuffer, 1, 100); //print received string

  if(flag == 1){ //check add finished

  for(c=0;c<ADC_BUF_SIZE/2;c++){

  sprintf(str, "%hu",(uint16_t*)buf1[c]); // conversion in str of value

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

  HAL_Delay(10);

  }

  HAL_UART_Transmit(&huart2,(uint8_t *)space,strlen(space),10); // string = “— — — — ;”

  UART1_rxBuffer[0]=0; // start flag clear

  flag = 0; // conversion adc clear

  }

  }

  }

[davidec]

i have already done it. The adc sample the signal that i need and after the buffer filling I need, it does not change buf1 and buf2. The problem remains for me to print the values to serial and then process them externally.

for(i=0;i<ADC_BUF_SIZE/2;i++)

			        	  {
			        		  buf1[i] = (uint16_t)(adcBuf[i]&0x0000FFFF);
			        	  	  buf2[i] = (uint16_t)(adcBuf[i]>>16);
			        	  }
	}

[TDK]

>  sprintf(str, "%hu",(uint16_t*)buf1[c]); // conversion in str of value

 Did you fix the error on this line? Show the corrected code.

[davidec]

  while (1)
  {
	  HAL_UART_Receive (&huart2, UART1_rxBuffer, 1, 5000);

	  if(UART1_rxBuffer[0] == 115){
		  HAL_UART_Transmit(&huart2, UART1_rxBuffer, 1, 100);
		  if(flag == 1){
		  for(c=0;c<ADC_BUF_SIZE/2;c++){
			  sprintf(str, "%u\r\n",((uint16_t*)buf1)[c]); // conversion in str of value
			  HAL_UART_Transmit(&huart2, (uint8_t*)str, strlen(str), HAL_MAX_DELAY);
			  HAL_Delay(100);

		  }
		  HAL_UART_Transmit(&huart2,(uint8_t *)space,strlen(space),10);
		  UART1_rxBuffer[0]=0;
		  flag = 0;
	  }
	  }

[Karl Yamashita]

So show what is in buf1 array, and what you're seeing being printed. And what are you printing to?

[davidec]

 

[Karl Yamashita]

So what interface are you using to communicate with uart2? I suspect that is your weak link.

I am using a STM32F407VG-Discovery, used your code and saved the same data that you've provided. When i press the letter 's', I am able to output all the data correctly.

[davidec]

I am using a TTL converter because via usb I cannot see the serial port. Is there some setting I'm missing?