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mosine
mosine
Associate III
September 15, 2014
Question

TIM1 interrupt STM32F0

  • September 15, 2014
  • 5 replies
  • 1688 views
Posted on September 15, 2014 at 13:56

Hi,

I need to know if it's possible configure TIM1 as timer base (I need interrupt every 5 msec). 

Thanks
    This topic has been closed for replies.

    5 replies

    Tesla DeLorean
    Tesla DeLorean
    Guru
    September 15, 2014
    Posted on September 15, 2014 at 16:53

    I need to know if it's possible configure TIM1 as timer base (I need interrupt every 5 msec). 

    Why wouldn't it be? Factor Prescaler and Period to get 200 Hz from whatever TIMCLK you're using.

    24000000 / 200 = 120000

    2  * 60000 = 120000

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    mosine
    mosineAuthor
    Associate III
    September 17, 2014
    Posted on September 17, 2014 at 12:24

    Hi Clive1,

    thanks for reply. I resolved by another way :) . 

    I need to know the interrupt of TIM1 handler (for TIM3 is: TIM3_IRQHandler).

    Tesla DeLorean
    Tesla DeLorean
    Guru
    September 17, 2014
    Posted on September 17, 2014 at 19:16

    To understand available interrupts you could review startup_stm32f0xx.s

                    DCD     TIM1_BRK_UP_TRG_COM_IRQHandler ; TIM1 Break, Update, Trigger and Commutation

                    DCD     TIM1_CC_IRQHandler             ; TIM1 Capture Compare

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    mosine
    mosineAuthor
    Associate III
    September 18, 2014
    Posted on September 18, 2014 at 08:25

    Hi clive,

    thanks for reply. This is my code; but doesn't work: 

    void TIM1Conf(void){
NVIC_InitTypeDef NVIC_InitStructure;
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1 , ENABLE);
TIM_TimeBaseStructure.TIM_Prescaler = (uint16_t) (((SystemCoreClock / 1000000)/2) - 1);
TIM_TimeBaseStructure.TIM_Period = 10000 - 1; 
TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1; 
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseStructure.TIM_RepetitionCounter = 0;
TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure);
TIM_ITConfig(TIM1, TIM_IT_Update, ENABLE);
TIM_Cmd(TIM1, ENABLE); 
/* Interrupt Timer1 */ 
NVIC_ClearPendingIRQ(TIM1_BRK_UP_TRG_COM_IRQn);
NVIC_InitStructure.NVIC_IRQChannel = TIM1_BRK_UP_TRG_COM_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
}
void TIM1_BRK_UP_TRG_COM_IRQHandler (void){
if(TIM_GetITStatus(TIM1, TIM_IT_Update) != RESET)
{
 //

    my operations
TIM_ClearITPendingBit(TIM16, TIM_IT_Update);
}
}

    John F.
    John F.
    Associate III
    September 18, 2014
    Posted on September 18, 2014 at 09:15 

    TIM_ClearITPendingBit(TIM16, TIM_IT_Update);

    TIM16 ?
    Terms & ConditionsAccessibility statement