stm32f303 counter doesn't count

[jimpapay]

Posted on February 21, 2013 at 07:36

Hello all,

I have been on other forums and no-one has been able to help me so far. I am implementing a timer in a stm32f303 microcontroller. Below is the code that I am using to start it. Can anyone give a suggestion on why the CNT register doesn't count?

TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;

int main ( void )            

{       //Enable SYSCFG clock   RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);

  //Timer clock

  RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM4, ENABLE);      //Time base configuration   TIM_TimeBaseStructInit(&TIM_TimeBaseStructure);   TIM_TimeBaseStructure.TIM_Period = 9999;   TIM_TimeBaseStructure.TIM_Prescaler = 99;   TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;   TIM_TimeBaseInit(TIM4, &TIM_TimeBaseStructure);

  //TIM Interrupts enable

  TIM_ITConfig(TIM4, TIM_IT_Update, ENABLE);   TIM_Cmd(TIM4, ENABLE);     while(1);   #stm32f303

[Tesla DeLorean]

Posted on February 21, 2013 at 12:53

Where are you observing it not counting?

Make sure not to use a simulator, ie run on actual device, check debug target tab Can you set up one of the channels to output via a pin, or toggle a pin in the interrupt? Are you enabling the NVIC and handling the interrupt?