TIM6 and TIM7 identical, the interrupt is working for TIM6 and not for TIM7

[Beppe101]

Hi,

I added TIM7 to application and configured it the same way TIM6 was.

I need to use two timers for my app, code contains all the same setups for TIM6 and TIM7, except for the timer expiration counters, and I observe that the callback 

void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)  

never enters in the conditional block it contains:

if ( htim == &htim7 )

{

/* code block */

}

the callback above is invoked when htim == &tim6.

The timers setup are:

Please help, I double checked all I could without finding a solution

[SofLit]

Hello,

And if you disable TIM6 and keep TIM7, what is the behavior? TIM7 still not working?

Did you check TIM7 counter? is it really counting?

[Beppe101]

Hi,

I disabled TIM6 as suggested, the callback above is only invoked with ( htim == &htim3 ).

[SofLit]

---

@Beppe101 wrote:

Hi,

I disabled TIM6 as suggested, the callback above is only invoked with ( htim == &htim3 ).

---

Didn't understand. You are using TIM6 and TIM7. What TIM3 is doing here?

How many timers are you using in the callback?

[Beppe101]

Hi,

the app works correctly with timers TIM3, TIM6, TIM14 together. I add TIM7 and TIM7 doesn't work as expected no matter if TIM6 is present or not. TIM14 used for PWM generation does not fire callback above. TIM3 has 2 channels for input capture and it fires the callback that does nothing with TIM3.

[SofLit]

Could you please keep only TIM6 and TIM7 firing the interrupts just for the test?

[gbm]

Have you enabled the timers' interrupts? I can't see it on the screens you supplied.

[TDK]

Are you starting TIM7?

Not really providing the full picture of the problem. Consider attaching your main.c at the least.

[Beppe101]

Here is main.c

/* USER CODE BEGIN Header */
/**
 ******************************************************************************
 * @file           : main.c
 * @brief          : Main program body
 ******************************************************************************
 * @attention
 *
 * Copyright (c) 2023 STMicroelectronics.
 * All rights reserved.
 *
 * This software is licensed under terms that can be found in the LICENSE file
 * in the root directory of this software component.
 * If no LICENSE file comes with this software, it is provided AS-IS.
 *
 ******************************************************************************
 */
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "adc.h"
#include "crc.h"
#include "dma.h"
#include "tim.h"
#include "usart.h"
#include "gpio.h"

/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */

/**************************************
 *  Includes                          *
 **************************************/

#include <stdio.h>
#include <string.h>

#include "Core_interface.h"
#include "AlertsManager_interface.h"
#include "AntennaGainControl_interface.h"
#include "SerialBusManager_interface.h"

#ifdef DEBUG
#include "SerialConsoleManager_interface.h"
#endif /* DEBUG */

/* 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 ---------------------------------------------------------*/

/* USER CODE BEGIN PV */

/**************************************
 *  Global variables                  *
 **************************************/

/* ADC1 converted values */
uint32_t adc1Values[ADC1_NUMBER_OF_CHANNELS];

/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
/* USER CODE BEGIN PFP */


/* 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_DMA_Init();
  MX_USART2_UART_Init();
  MX_ADC1_Init();
  MX_TIM14_Init();
  MX_USART1_UART_Init();
  MX_CRC_Init();
  MX_TIM3_Init();
  MX_TIM1_Init();
  MX_TIM7_Init();
  /* USER CODE BEGIN 2 */


    HAL_UART_MspInit(&huart1);
    HAL_UART_MspInit(&huart2);

//    HAL_TIM_Base_Start_IT(&htim6);
    HAL_TIM_Base_Start_IT(&htim3);
    HAL_TIM_IC_Start_IT(&htim3, TIM_CHANNEL_1);
    HAL_TIM_IC_Start_IT(&htim3, TIM_CHANNEL_2);

    HAL_TIM_PWM_Start(&htim14, TIM_CHANNEL_1);
    HAL_TIM_Base_Start(&htim14);
    HAL_TIM_Base_Start(&htim7);

    __HAL_RCC_CRC_CLK_ENABLE();

  /* USER CODE END 2 */

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */

	TIM7->CNT = 0;
	TIM7->ARR = 500;


    while (1)
    {

    }

    /* USER CODE END WHILE */

    /* USER CODE BEGIN 3 */

  /* USER CODE END 3 */
}

/**
  * @brief System Clock Configuration
  * @retval None
  */
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 RCC Oscillators according to the specified parameters
  * in the RCC_OscInitTypeDef structure.
  */
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
  RCC_OscInitStruct.HSIState = RCC_HSI_ON;
  RCC_OscInitStruct.HSIDiv = RCC_HSI_DIV1;
  RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI;
  RCC_OscInitStruct.PLL.PLLM = RCC_PLLM_DIV1;
  RCC_OscInitStruct.PLL.PLLN = 8;
  RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
  RCC_OscInitStruct.PLL.PLLR = RCC_PLLR_DIV2;
  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
  {
    Error_Handler();
  }

  /** Initializes the CPU, AHB and APB buses clocks
  */
  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
                              |RCC_CLOCKTYPE_PCLK1;
  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;

  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
  {
    Error_Handler();
  }
}

/* USER CODE BEGIN 4 */



/* 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 */
	__disable_irq();
	while (1) {
	}
  /* 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(uint8_t *file, uint32_t line)
{
  /* USER CODE BEGIN 6 */
	/* User can add his own implementation to report the file name and line number,
     ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
  /* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */

[Pavel A.]

Have you added the TIM7 ISR handler in your  stm.....it.c file?