STM32F303K8 timer interrupt hangs

[4tschabos]

Posted on January 25, 2017 at 11:07

Hi,

I try to implement a timer with interrupt routine, but it always hangs after the timer is activated. This can be seen if I use the debugger over SWD: when I execute the next command after TIM_Cmd(TIM2, ENABLE); there is no more response from the uC. Does someone have an idea?

My code:

/**

******************************************************************************

* @file main.c

* @author Ac6

* @version V1.0

* @date 01-December-2013

* @brief Default main function.

******************************************************************************

*/

#include 'stm32f30x.h'

//#include 'USART_DMA.h'

//#include 'FOC.h'

int main(void)

{

SystemInit();

//USART init

//init_usart(57600);

//send_usart_data('Go!');

//FOC init

//initTimerFOC();

initTimer();

//LED init

RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE);

GPIO_InitTypeDef GPIO_InitStructure;

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;

GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;

GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;

GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_DOWN;

GPIO_Init(GPIOA, &GPIO_InitStructure);

while(1) {

GPIO_ResetBits(GPIOA, GPIO_Pin_6);

for(int i=0;i<100000;i++);

GPIO_SetBits(GPIOA, GPIO_Pin_6);

for(int i=0;i<100000;i++);

//send_usart_data('X');

}

}

void TIM2_IRQHandler(void) {

if (TIM_GetITStatus(TIM2, TIM_IT_Update) != RESET) {

TIM_ClearITPendingBit(TIM2, TIM_IT_Update);

}

}

void initTimer() {

RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);

NVIC_InitTypeDef NVIC_InitStructure;

NVIC_InitStructure.NVIC_IRQChannel = TIM2_IRQn;

NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;

NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;

NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;

NVIC_Init(&NVIC_InitStructure);

TIM_TimeBaseInitTypeDef TIM2Init;

TIM2Init.TIM_Prescaler = 10;

TIM2Init.TIM_Period = 2000;

TIM2Init.TIM_ClockDivision = TIM_CKD_DIV1;

TIM2Init.TIM_CounterMode = TIM_CounterMode_Up;

TIM2Init.TIM_RepetitionCounter = 0;

TIM_TimeBaseInit(TIM2, &TIM2Init);

TIM_ClearITPendingBit(TIM2, TIM_IT_Update);

TIM_ITConfig(TIM2, TIM_IT_Update, ENABLE);

//Timer

TIM_Cmd(TIM2, ENABLE);

}

[waclawek.jan]

Posted on January 25, 2017 at 11:22

And what happens when you properly initialize the timer init struct?

JW

[4tschabos]

Posted on January 25, 2017 at 11:23

The original post was too long to process during our migration. Please click on the provided URL to read the original post. https://st--c.eu10.content.force.com/sfc/dist/version/download/?oid=00Db0000000YtG6&ids=0680X000006I6mM&d=%2Fa%2F0X0000000bvE%2FHd5BkjSuK2WLXos7lPJ9XIZ6aNAWku9NjGFfWJSXM24&asPdf=false

[gbm]

Posted on January 25, 2017 at 12:10

I noticed you are using AC6. If the project was generated by hand (not by CubeMX), the startup file does not contain a populated interrupt vector table, so your routine is actually never called.

[4tschabos]

Posted on January 25, 2017 at 12:13

Ok, so you recommend to use CubeMX to generate the startup and system code and then build the project on top of it?

[gbm]

Posted on January 25, 2017 at 13:09

Looks like a good idea. Projects generated by AC6 are far from being complete. Atollic, Keil and others generate complete empty projects with usable startup files and ready-to-use headers with a few mouse clicks.