STM32F103C8T6 TIM1 interrupt not occuring

[paul sauv]

I would like to have an interrupt every second on my TIM1 I use a STM32F103C8T6

Here is my timer init:

 
 static void MX_TIM1_Init(void)
{
 
  TIM_ClockConfigTypeDef sClockSourceConfig;
  TIM_MasterConfigTypeDef sMasterConfig;
 
  htim1.Instance = TIM1;
  htim1.Init.Prescaler = 1124;
  htim1.Init.CounterMode = TIM_COUNTERMODE_UP;
  htim1.Init.Period = 63999;
  htim1.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
  htim1.Init.RepetitionCounter = 0;
  htim1.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
  if (HAL_TIM_Base_Init(&htim1) != HAL_OK)
  {
    _Error_Handler(__FILE__, __LINE__);
  }
 
  sClockSourceConfig.ClockSource = TIM_CLOCKSOURCE_INTERNAL;
  if (HAL_TIM_ConfigClockSource(&htim1, &sClockSourceConfig) != HAL_OK)
  {
    _Error_Handler(__FILE__, __LINE__);
  }
 
  sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
  sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
  if (HAL_TIMEx_MasterConfigSynchronization(&htim1, &sMasterConfig) != HAL_OK)
  {
    _Error_Handler(__FILE__, __LINE__);
  }
 
}
 
 

And here is the PeriodElapsedCallback part:

void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)  
 
{
 
if (htim->Instance==TIM1) //check if the interrupt comes from TIM1
 
        {       
 
                old_enc_value = enc_value;
 
                enc_value = __HAL_TIM_GET_COUNTER(&htim4)+ MULT1K*1000;
 
                //RPM = (int) round(((enc_value - old_enc_value)* Resolution_broche) *60);  
 
                    RPM++;
 
                }
 
}

I configured TIM2 the exact same way and it's working fine, but impossible to have a value with TIM1. With this basic code i should have the variable RPM increasing from 1 every second but it's stuck to 0 in debug mode. all interrupts are enabled in NVIC /CubeMX Did I missed something ?

Thank you

[paul sauv · Accepted solution]

I found my mistake:

HAL_TIM_Base_Start_IT(&htim1);

was commented ...!