求大神帮忙啊，总进异常中断，为什么啊？

只看该作者 · 2014-4-7 14:50

本帖最后由 xingshaobang 于 2014-4-8 15:28 编辑

我用ST的例子建立一个工程，怎么就总是进异常中断呢？大神帮忙啊

主函数文件：
/* MAIN.C file
*
* Copyright (c) 2002-2005 STMicroelectronics
*/
#include "stm8s.h"
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
#define TIM4_PERIOD    124
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
__IO uint32_t TimingDelay = 0;

void Delay(__IO uint32_t nTime);
void TimingDelay_Decrement(void);
static void CLK_Config(void);
static void TIM4_Config(void);

main()
{
      /* Clock configuration -----------------------------------------*/
  CLK_Config();
  /* TIM4 configuration -----------------------------------------*/
  TIM4_Config();

      while (1)
            {Delay(100);};
}
static void CLK_Config(void)
{
/* Initialization of the clock */
/* Clock divider to HSI/1 */
CLK_HSIPrescalerConfig(CLK_PRESCALER_HSIDIV1);
}

static void TIM4_Config(void)
{
  /* TIM4 configuration:
- TIM4CLK is set to 16 MHz, the TIM4 Prescaler is equal to 128 so the TIM1 counter
clock used is 16 MHz / 128 = 125 000 Hz
  - With 125 000 Hz we can generate time base:
   max time base is 2.048 ms if TIM4_PERIOD = 255 --> (255 + 1) / 125000 = 2.048 ms
   min time base is 0.016 ms if TIM4_PERIOD = 1 --> (  1 + 1) / 125000 = 0.016 ms
  - In this example we need to generate a time base equal to 1 ms
so TIM4_PERIOD = (0.001 * 125000 - 1) = 124 */

  /* Time base configuration */
  TIM4_TimeBaseInit(TIM4_PRESCALER_128, TIM4_PERIOD);
  /* Clear TIM4 update flag */
  TIM4_ClearFlag(TIM4_FLAG_UPDATE);
  /* Enable update interrupt */
  TIM4_ITConfig(TIM4_IT_UPDATE, ENABLE);

  /* enable interrupts */
  enableInterrupts();

  /* Enable TIM4 */
  TIM4_Cmd(ENABLE);
}

void TimingDelay_Decrement(void)
{
  if (TimingDelay != 0x00)
  {
TimingDelay--;
  }
}

void Delay(__IO uint32_t nTime)
{
  TimingDelay = nTime;

  while (TimingDelay != 0);
}

总是跳到下面这个函数，为什么呢？

@far @interrupt void NonHandledInterrupt (void)
{
      /* in order to detect unexpected events during development,
         it is recommended to set a breakpoint on the following instruction
      */
      return;
}

补充，stm8s_it.c中与TIM4中断有关部分
#ifdef STM8S903/**
  * @brief  Timer6 Update/Overflow/Trigger Interrupt routine
  * @param  None
  * @retval None
  */
INTERRUPT_HANDLER(TIM6_UPD_OVF_TRG_IRQHandler, 23)
{
  /* In order to detect unexpected events during development,
   it is recommended to set a breakpoint on the following instruction.
  */
}
#else /*STM8S208, STM8S207, STM8S105 or STM8S103 or STM8AF62Ax or STM8AF52Ax or STM8AF626x */
/**
  * @brief  Timer4 Update/Overflow Interrupt routine
  * @param  None
  * @retval None
  */
INTERRUPT_HANDLER(TIM4_UPD_OVF_IRQHandler, 23)
{
TimingDelay_Decrement();
  /* Cleat Interrupt Pending bit */
  TIM4_ClearITPendingBit(TIM4_IT_UPDATE);

}
#endif /*STM8S903*/