Problems with STM32G431K8Tx

BBori.1 · ‎2021-11-11

Good day, I'm developing a remote control using a STM32G and I encounter some problems.

For my code i need two timers:

Timer1: it has a 1us overflow time and is not handled by any interruption, I just use it to count micro seconds for my delay_us function.

Timer3: its configured with a interruption frequency of about 76.2kHz and it is handled by an interruption. This timer is used to modulate an output so it should only negate a variable and make an and operation between that variable and the output.

For now I'm just testing whether the controller runs, and I'm just making a led blink:

void setLED(uint8_t val)
{
	HAL_GPIO_WritePin(OUT_LED_GPIO_Port, OUT_LED_Pin, !val);
}
 
 while (1)
  {
	  setLED(1);
	  HAL_Delay(500);
	  setLED(0);
	  HAL_Delay(500);
  }

I'm seeing some erratic behavior, with timer's 3 interruption on if I leave the interruption handler empty it works and the led blinks, but if I even make a variable assignment inside the interruption handler it stops working.

The debugger hangs just before entering HAL_Delay().

It also works in debug mode but not in release.

Led blink:

void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)
{
  if (htim == &htim3)
  {
 
  }
}

Led doesn't blink:

void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)
{
  if (htim == &htim3)
  {
	  uint8_t var = 0;
  }
}

Here I leave the code and configuration:

Timer3:

Timer1

NVIC:

GPIO:

Thank you for your help!

BBori.1 · ‎2021-11-11

Here is the code

#include "main.h"
 
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_TIM1_Init(void);
static void MX_TIM3_Init(void);
 
void setLED(uint8_t val)
{
	HAL_GPIO_WritePin(OUT_LED_GPIO_Port, OUT_LED_Pin, !val);
}
 
int main(void)
{
  HAL_Init();
 
  SystemClock_Config();
 
  MX_GPIO_Init();
  MX_TIM1_Init();
  MX_TIM3_Init();
 
  command = 0x00;
  HAL_TIM_Base_Start(&htim1);
  HAL_TIM_Base_Start_IT(&htim3);
 
  while (1)
  {
	  setLED(1);
	  HAL_Delay(500);
	  setLED(0);
	  HAL_Delay(500);
  }
 
}
 
 
void SystemClock_Config(void)
{
  RCC_OscInitTypeDef RCC_OscInitStruct = {0};
  RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
 
  /** Configure the main internal regulator output voltage 
  */
  HAL_PWREx_ControlVoltageScaling(PWR_REGULATOR_VOLTAGE_SCALE1);
  /** Initializes the CPU, AHB and APB busses clocks 
  */
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
  RCC_OscInitStruct.HSIState = RCC_HSI_ON;
  RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
  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_HSI;
  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
 
  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_0) != HAL_OK)
  {
    Error_Handler();
  }
}
 
/**
  * @brief TIM1 Initialization Function
  * @param None
  * @retval None
  */
static void MX_TIM1_Init(void)
{
 
  /* USER CODE BEGIN TIM1_Init 0 */
 
  /* USER CODE END TIM1_Init 0 */
 
  TIM_ClockConfigTypeDef sClockSourceConfig = {0};
  TIM_MasterConfigTypeDef sMasterConfig = {0};
  TIM_BreakDeadTimeConfigTypeDef sBreakDeadTimeConfig = {0};
 
  /* USER CODE BEGIN TIM1_Init 1 */
 
  /* USER CODE END TIM1_Init 1 */
  htim1.Instance = TIM1;
  htim1.Init.Prescaler = 0;
  htim1.Init.CounterMode = TIM_COUNTERMODE_UP;
  htim1.Init.Period = 15;
  htim1.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
  htim1.Init.RepetitionCounter = 0;
  htim1.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_ENABLE;
  if (HAL_TIM_Base_Init(&htim1) != HAL_OK)
  {
    Error_Handler();
  }
  sClockSourceConfig.ClockSource = TIM_CLOCKSOURCE_INTERNAL;
  if (HAL_TIM_ConfigClockSource(&htim1, &sClockSourceConfig) != HAL_OK)
  {
    Error_Handler();
  }
  sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
  sMasterConfig.MasterOutputTrigger2 = TIM_TRGO2_RESET;
  sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
  if (HAL_TIMEx_MasterConfigSynchronization(&htim1, &sMasterConfig) != HAL_OK)
  {
    Error_Handler();
  }
  sBreakDeadTimeConfig.BreakAFMode = TIM_BREAK_AFMODE_INPUT;
  sBreakDeadTimeConfig.Break2AFMode = TIM_BREAK_AFMODE_INPUT;
  if (HAL_TIMEx_ConfigBreakDeadTime(&htim1, &sBreakDeadTimeConfig) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN TIM1_Init 2 */
 
  /* USER CODE END TIM1_Init 2 */
 
}
 
/**
  * @brief TIM3 Initialization Function
  * @param None
  * @retval None
  */
static void MX_TIM3_Init(void)
{
 
  /* USER CODE BEGIN TIM3_Init 0 */
 
  /* USER CODE END TIM3_Init 0 */
 
  TIM_ClockConfigTypeDef sClockSourceConfig = {0};
  TIM_MasterConfigTypeDef sMasterConfig = {0};
 
  /* USER CODE BEGIN TIM3_Init 1 */
 
  /* USER CODE END TIM3_Init 1 */
  htim3.Instance = TIM3;
  htim3.Init.Prescaler = 0;
  htim3.Init.CounterMode = TIM_COUNTERMODE_UP;
  htim3.Init.Period = 210;
  htim3.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
  htim3.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_ENABLE;
  if (HAL_TIM_Base_Init(&htim3) != HAL_OK)
  {
    Error_Handler();
  }
  sClockSourceConfig.ClockSource = TIM_CLOCKSOURCE_INTERNAL;
  if (HAL_TIM_ConfigClockSource(&htim3, &sClockSourceConfig) != HAL_OK)
  {
    Error_Handler();
  }
  sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
  sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
  if (HAL_TIMEx_MasterConfigSynchronization(&htim3, &sMasterConfig) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN TIM3_Init 2 */
 
  /* USER CODE END TIM3_Init 2 */
 
}
 
/**
  * @brief GPIO Initialization Function
  * @param None
  * @retval None
  */
static void MX_GPIO_Init(void)
{
  GPIO_InitTypeDef GPIO_InitStruct = {0};
 
  /* GPIO Ports Clock Enable */
  __HAL_RCC_GPIOF_CLK_ENABLE();
  __HAL_RCC_GPIOA_CLK_ENABLE();
  __HAL_RCC_GPIOB_CLK_ENABLE();
 
  /*Configure GPIO pin Output Level */
  HAL_GPIO_WritePin(GPIOF, GPIO_PIN_0|GPIO_PIN_1, GPIO_PIN_RESET);
 
  /*Configure GPIO pin Output Level */
  HAL_GPIO_WritePin(GPIOA, GPIO_PIN_4|GPIO_PIN_5|GPIO_PIN_6|GPIO_PIN_7 
                          |GPIO_PIN_11|GPIO_PIN_15, GPIO_PIN_RESET);
 
  /*Configure GPIO pin Output Level */
  HAL_GPIO_WritePin(OUT_LED_GPIO_Port, OUT_LED_Pin, GPIO_PIN_SET);
 
  /*Configure GPIO pin Output Level */
  HAL_GPIO_WritePin(GPIOB, GPIO_PIN_3|GPIO_PIN_4|GPIO_PIN_5|GPIO_PIN_6 
                          |GPIO_PIN_7|GPIO_PIN_8, GPIO_PIN_RESET);
 
  /*Configure GPIO pins : PF0 PF1 */
  GPIO_InitStruct.Pin = GPIO_PIN_0|GPIO_PIN_1;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
  HAL_GPIO_Init(GPIOF, &GPIO_InitStruct);
 
  /*Configure GPIO pins : IN_BT4_Pin IN_BT2_Pin IN_BT1_Pin IN_BT3_Pin 
                           IN_BT5_Pin IN_BT7_Pin IN_BT8_Pin IN_BT6_Pin */
  GPIO_InitStruct.Pin = IN_BT4_Pin|IN_BT2_Pin|IN_BT1_Pin|IN_BT3_Pin 
                          |IN_BT5_Pin|IN_BT7_Pin|IN_BT8_Pin|IN_BT6_Pin;
  GPIO_InitStruct.Mode = GPIO_MODE_IT_RISING;
  GPIO_InitStruct.Pull = GPIO_PULLDOWN;
  HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
 
  /*Configure GPIO pins : PA4 PA5 PA6 PA7 
                           PA11 PA15 */
  GPIO_InitStruct.Pin = GPIO_PIN_4|GPIO_PIN_5|GPIO_PIN_6|GPIO_PIN_7 
                          |GPIO_PIN_11|GPIO_PIN_15;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
  HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
 
  /*Configure GPIO pins : OUT_LED_Pin PB4 */
  GPIO_InitStruct.Pin = OUT_LED_Pin|GPIO_PIN_4;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  GPIO_InitStruct.Pull = GPIO_PULLDOWN;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
  HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
 
  /*Configure GPIO pins : PB3 PB5 PB6 PB7 
                           PB8 */
  GPIO_InitStruct.Pin = GPIO_PIN_3|GPIO_PIN_5|GPIO_PIN_6|GPIO_PIN_7 
                          |GPIO_PIN_8;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
  HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
 
  /* EXTI interrupt init*/
  HAL_NVIC_SetPriority(EXTI0_IRQn, 2, 0);
  HAL_NVIC_EnableIRQ(EXTI0_IRQn);
 
  HAL_NVIC_SetPriority(EXTI1_IRQn, 2, 0);
  HAL_NVIC_EnableIRQ(EXTI1_IRQn);
 
  HAL_NVIC_SetPriority(EXTI2_IRQn, 2, 0);
  HAL_NVIC_EnableIRQ(EXTI2_IRQn);
 
  HAL_NVIC_SetPriority(EXTI3_IRQn, 2, 0);
  HAL_NVIC_EnableIRQ(EXTI3_IRQn);
 
  HAL_NVIC_SetPriority(EXTI9_5_IRQn, 2, 0);
  HAL_NVIC_EnableIRQ(EXTI9_5_IRQn);
 
  HAL_NVIC_SetPriority(EXTI15_10_IRQn, 2, 0);
  HAL_NVIC_EnableIRQ(EXTI15_10_IRQn);
 
}
 
/* USER CODE BEGIN 4 */
 
 
 
void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)
{
  if (htim == &htim3)
  {
 
  }
}
 
void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)
{
	switch(GPIO_Pin)
	{
		case IN_BT1_Pin:
			command = 0xAA;
			break;
		case IN_BT2_Pin:
			command = 0xAA;
			break;
		case IN_BT3_Pin:
			command = 0xAA;
			break;
		case IN_BT4_Pin:
			command = 0xAA;
			break;
		case IN_BT5_Pin:
			command = 0xAA;
			break;
		case IN_BT6_Pin:
			command = 0xAA;
			break;
		case IN_BT7_Pin:
			command = 0xAA;
			break;
		case IN_BT8_Pin:
			command = 0xAA;
			break;
		default:
			command = 0x00;
	}
}
/* 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 */
}

TDK · ‎2021-11-11

It's probably stuck in TIM3 interrupts given that your period is only 210 ticks. Run the code, hit pause, then see where the MCU is at.

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