求助，最基本定时器中断，仿真遇到问题

只看该作者 · 2013-5-27 10:23

最近学习stm32f103zet6，用的keil 4.6，先是看看固件库，拿程序软件仿真一下，前几天买的jlink到了，开始硬件仿真，遇到很多问题。特来求教。
  一个最基本的定时器，我的板子是gpiod口，程序如下

#include "stm32f10x.h"

void RCC_cfg();
void TIMER_cfg();
void NVIC_cfg();
void GPIO_cfg();
NVIC_InitTypeDef NVIC_InitStructure;
int main()
{
   RCC_cfg();
   NVIC_cfg();
   GPIO_cfg();
   TIMER_cfg();

   //?????2
   TIM_Cmd(TIM2,ENABLE);

   while(1);
}

void RCC_cfg()
{

   //????????
   ErrorStatus HSEStartUpStatus;

   //?RCC???????????
   RCC_DeInit();

   //??????????
   RCC_HSEConfig(RCC_HSE_ON);

   //????????????
   HSEStartUpStatus = RCC_WaitForHSEStartUp();
   if(HSEStartUpStatus == SUCCESS)
   {
            //??AHB??(HCLK)?????
            RCC_HCLKConfig(RCC_SYSCLK_Div1);

            //????AHB??(APB2)?HCLK??
            RCC_PCLK2Config(RCC_HCLK_Div1);

            //????AHB??(APB1)?HCLK?2??
            RCC_PCLK1Config(RCC_HCLK_Div2);

            //??FLASH????
            FLASH_SetLatency(FLASH_Latency_2);

            //???????
            FLASH_PrefetchBufferCmd(FLASH_PrefetchBuffer_Enable);

            //??PLL??,?HSE?9?? 8MHz * 9 = 72MHz
            RCC_PLLConfig(RCC_PLLSource_HSE_Div1, RCC_PLLMul_9);

            //??PLL
            RCC_PLLCmd(ENABLE);

            //??PLL????
            while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET);

            //??PLL??????
            RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);

            //??PLL???????
            while(RCC_GetSYSCLKSource() != 0x08);
   }

   //??TIM2???
   RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2,ENABLE);
   //??GPIO???
   RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD,ENABLE);

}

void TIMER_cfg()
{
   TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;

   //???Timer??????
   TIM_DeInit(TIM2);
   //???????TIM2?????
   TIM_InternalClockConfig(TIM2);
   //??????36000-1,????????72MHz/36000 = 2kHz
   TIM_TimeBaseStructure.TIM_Prescaler = 36000 - 1;
   //??????
   TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;
   //??????????????
   TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
   //????????,??2000???????????
   TIM_TimeBaseStructure.TIM_Period = 2000 - 1;
   //??????TIM2?
   TIM_TimeBaseInit(TIM2,&TIM_TimeBaseStructure);

   //????????
   TIM_ClearFlag(TIM2, TIM_FLAG_Update);
   //??ARR??????
   TIM_ARRPreloadConfig(TIM2, DISABLE);
   //??TIM2???
   TIM_ITConfig(TIM2,TIM_IT_Update,ENABLE);
}

void NVIC_cfg()
{
#ifdef  VECT_TAB_RAM
  /* Set the Vector Table base location at 0x20000000 */
  NVIC_SetVectorTable(NVIC_VectTab_RAM, 0x0);
#else  /* VECT_TAB_FLASH  */
  /* Set the Vector Table base location at 0x08000000 */
  NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0);
#endif


      //??????1
      NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);


      //??TIM2?????
      NVIC_InitStructure.NVIC_IRQChannel = TIM2_IRQn;
      //???????????0
      NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
   //???????????0
      NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
      //????
      NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
      NVIC_Init(&NVIC_InitStructure);
}

void GPIO_cfg()
{
   GPIO_InitTypeDef GPIO_InitStructure;


   GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3;                //????5
   GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; //??????50MHz
   GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; //???????
   GPIO_Init(GPIOD,&GPIO_InitStructure);
}

仿真时，若中断函数中设置断点，则先单步运行至while循环，再f5 全速执行可进中断，然后单步至while，再f5可再次进入断点。
      若中断函数中设置断点，则先单步运行至while循环，再f5 全速执行可进中断，在中断断点处若点f5则直接回到main的第一句 rcc配置句。
      又在中断中和main入口rcc处设置断点，f5全速运行，到main入口rcc语句断点，再f5依旧。
弄了几天了，最简单的程序都过不去，新手求大家帮助