Program is only working in debug mode using ST link

[ASaxe]

Hi All,

I am reading data from UART via polling method. I am sending random data on UART pins and reading on terminal. in that case my program is working fine in debug mode but when try to make this work without debug mode or I can say normal program is not working.

I am using stm32f3 discovery board.

Can anyone tell me what I am doing wrong

/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file           : main.c
  * @brief          : Main program body
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; Copyright (c) 2019 STMicroelectronics.
  * All rights reserved.</center></h2>
  *
  * This software component is licensed by ST under BSD 3-Clause license,
  * the "License"; You may not use this file except in compliance with the
  * License. You may obtain a copy of the License at:
  *                        opensource.org/licenses/BSD-3-Clause
  *
  ******************************************************************************
  */
/* USER CODE END Header */
 
/* Includes ------------------------------------------------------------------*/
#include "main.h"
 
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
 
/* USER CODE END Includes */
 
/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */
 
/* USER CODE END PTD */
 
/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
 
/* USER CODE END PD */
 
/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */
 
/* USER CODE END PM */
 
/* Private variables ---------------------------------------------------------*/
UART_HandleTypeDef huart4;
 
/* USER CODE BEGIN PV */
uint8_t rx[5] = {'H', 'E', 'L', 'L', 'O'};
uint8_t tx[12],rx_index;
uint8_t rx_data[12];
uint8_t tx_data[12];
uint8_t msg_count = 0;
 
char msg_flag = 0;
uint32_t x1 = 0;
 
uint8_t response[11] = {'{','[','0','0','0','0','0','0','0',']','}'};
//uint8_t msg_count = 0;
uint8_t msg_c_count = 0;
/* USER CODE END PV */
 
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_UART4_Init(void);
/* USER CODE BEGIN PFP */
void data_process(uint8_t *);
/* USER CODE END PFP */
 
/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
 
/* USER CODE END 0 */
 
/**
  * @brief  The application entry point.
  * @retval int
  */
int main(void)
{
  /* USER CODE BEGIN 1 */
 
  /* USER CODE END 1 */
  
 
  /* MCU Configuration--------------------------------------------------------*/
 
  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
  HAL_Init();
 
  /* USER CODE BEGIN Init */
 
  /* USER CODE END Init */
 
  /* Configure the system clock */
  SystemClock_Config();
 
  /* USER CODE BEGIN SysInit */
 
  /* USER CODE END SysInit */
 
  /* Initialize all configured peripherals */
  MX_GPIO_Init();
  MX_UART4_Init();
  /* USER CODE BEGIN 2 */
	  //HAL_FLASH_Unlock();
		
 
  /* USER CODE END 2 */
 
  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {
    /* USER CODE END WHILE */
 
    /* USER CODE BEGIN 3 */
		HAL_UART_Receive(&huart4, rx_data, 12, 100);
		/*if (rx_data[0] == 'S'){
			HAL_UART_Transmit(&huart4, response, 12,10);
			HAL_Delay(100);
			rx_data[0] = '0';
		}
	}*/
		if (rx_data[0] == '{'){
			for(msg_c_count = 0; msg_c_count < 12; msg_c_count++){
				tx_data[msg_c_count] = rx_data[msg_c_count];
				memset(rx_data,0,sizeof(rx_data));HAL_Delay(10);
				msg_flag = 1;
			}
		}
		if (msg_flag == 1){
			msg_flag = 0;
			data_process(tx_data);
			memset(tx_data,0,sizeof(tx_data));HAL_Delay(10);
			msg_c_count = 0;
			msg_count = 0;
		}
	}
  /* USER CODE END 3 */
}
 
/**
  * @brief System Clock Configuration
  * @retval None
  */
void SystemClock_Config(void)
{
  RCC_OscInitTypeDef RCC_OscInitStruct = {0};
  RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
  RCC_PeriphCLKInitTypeDef PeriphClkInit = {0};
 
  /** Initializes the CPU, AHB and APB busses clocks 
  */
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
  RCC_OscInitStruct.HSEState = RCC_HSE_ON;
  RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1;
  RCC_OscInitStruct.HSIState = RCC_HSI_ON;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
  RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9;
  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
  {
    Error_Handler();
  }
  /** Initializes the CPU, AHB and APB busses clocks 
  */
  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
                              |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
 
  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
  {
    Error_Handler();
  }
  PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_UART4;
  PeriphClkInit.Uart4ClockSelection = RCC_UART4CLKSOURCE_PCLK1;
  if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
  {
    Error_Handler();
  }
}
 
/**
  * @brief UART4 Initialization Function
  * @param None
  * @retval None
  */
static void MX_UART4_Init(void)
{
 
  /* USER CODE BEGIN UART4_Init 0 */
 
  /* USER CODE END UART4_Init 0 */
 
  /* USER CODE BEGIN UART4_Init 1 */
 
  /* USER CODE END UART4_Init 1 */
  huart4.Instance = UART4;
  huart4.Init.BaudRate = 115200;
  huart4.Init.WordLength = UART_WORDLENGTH_8B;
  huart4.Init.StopBits = UART_STOPBITS_1;
  huart4.Init.Parity = UART_PARITY_NONE;
  huart4.Init.Mode = UART_MODE_TX_RX;
  huart4.Init.HwFlowCtl = UART_HWCONTROL_NONE;
  huart4.Init.OverSampling = UART_OVERSAMPLING_16;
  huart4.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE;
  huart4.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
  if (HAL_UART_Init(&huart4) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN UART4_Init 2 */
 
  /* USER CODE END UART4_Init 2 */
 
}
 
/**
  * @brief GPIO Initialization Function
  * @param None
  * @retval None
  */
static void MX_GPIO_Init(void)
{
 
  /* GPIO Ports Clock Enable */
  __HAL_RCC_GPIOC_CLK_ENABLE();
  __HAL_RCC_GPIOF_CLK_ENABLE();
  __HAL_RCC_GPIOA_CLK_ENABLE();
 
}
 
/* USER CODE BEGIN 4 */
void data_process(uint8_t *arr)
{
		if (arr[0] == '{'){
							msg_count = 0;
							for (msg_count = 1; msg_count < 9; msg_count++){
								if (arr[msg_count+1] != '5'){
									if (arr[msg_count+1] == '1'){
										response[msg_count+1] = '1';
									}
									else if(arr[msg_count+1] == '0'){
									response[msg_count+1] = '0';	
									}
								}
								else{
									response[msg_count+1] = '0';	
								}
            }					
		response[0] = '{';response[1] = '[';response[9] = ']';response[10] = '}';
		HAL_UART_Transmit(&huart4, response,sizeof(response),50);
		HAL_Delay(100);
	  x1 = HAL_UART_GetState(&huart4);
		memset(response,0,sizeof(response));HAL_Delay(10);
}
/* USER CODE END 4 */
 
/**
  * @brief  This function is executed in case of error occurrence.
  * @retval None
  */
void Error_Handler(void)
{
  /* USER CODE BEGIN Error_Handler_Debug */
  /* User can add his own implementation to report the HAL error return state */
 
  /* USER CODE END Error_Handler_Debug */
}
 
#ifdef  USE_FULL_ASSERT
/**
  * @brief  Reports the name of the source file and the source line number
  *         where the assert_param error has occurred.
  * @param  file: pointer to the source file name
  * @param  line: assert_param error line source number
  * @retval None
  */
void assert_failed(char *file, uint32_t line)
{ 
  /* USER CODE BEGIN 6 */
  /* User can add his own implementation to report the file name and line number,
     tex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
  /* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */
 
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

[Ozone]

Different code, perhaps by "#ifdef _DEBUG" ?

Different build settings, i.e. code optimization enabled in release mode ?

[umesh_patil]

which IDE you are using?

[ASaxe]

I am using Keil 5

[ASaxe]

issue has been t, I was not reseting the controller after firmware download.. Thanks for you help

[umesh_patil]

check the startup script in debug configuration...

[PPate.1029]

Same problem I am facing with stm32h7 43, what is its solution?

Please reply

[Tesla DeLorean]

H7 issues unlikely correlate with F3 ones, a year ago.

Let's keep this on your other thread.

https://community.st.com/s/question/0D53W00000M8qa4SAB/i-am-working-on-stm32h743-facing-problem-in-uart-dont-receive-all-correct-data-in-string-but-in-debugging-mode-received-all-data-correct-but-after-power-on-dont-receive-all-correct-data-what-is-the-problem-i-tried-everything-but-not-solve