Odd Behavior of TIM2 PWM Output on STM32U073

[muratsimsek]

In a system using FreeRTOS, there are currently two timers: TIM6 (the timer used by FreeRTOS) and TIM3 (a general-purpose timer). I am not experiencing any issues with these timers, and I can successfully run functions like interrupts. However, whenever I try to generate a PWM output using TIM7, I have not been able to achieve it.

Here is the main code.

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_ADC1_Init();
  MX_CRC_Init();
  MX_DAC1_Init();
  MX_TIM3_Init();
  MX_USART2_UART_Init();
  MX_TIM2_Init();
  /* USER CODE BEGIN 2 */
  HAL_TIM_PWM_Start(&htim2, TIM_CHANNEL_1); <---- STARTING PWM
  /* USER CODE END 2 */

  /* Init scheduler */
  osKernelInitialize();

  /* Call init function for freertos objects (in cmsis_os2.c) */
  MX_FREERTOS_Init();

  /* Start scheduler */
  osKernelStart();

  /* We should never get here as control is now taken by the scheduler */

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {
    /* USER CODE END WHILE */

    /* USER CODE BEGIN 3 */
  }
  /* USER CODE END 3 */
}

[SofLit]

Hello,

---

@muratsimsek wrote:

However, whenever I try to generate a PWM output using TIM7, I have not been able to achieve it.

---

But in the code, nothing about TIM7 but only TIM2:

  MX_TIM2_Init();
  /* USER CODE BEGIN 2 */
  HAL_TIM_PWM_Start(&htim2, TIM_CHANNEL_1); <---- STARTING PWM

[SofLit]

And your title: "Odd Behavior of TIM2 PWM Output on STM32U073" -> confusing information!

Need to clarify and fix.

Thanks