stm8s halt自唤醒长时间搁置 Timer出错

naruto2323 提问时间：2016-11-22 09:45 /

问答
是否解决:

定时器是10mS中断，长时间搁置后，timer变成了200uS的更新中断

相关代码如下：
void sysclk_init(void)
{
      //主时钟选择
{
      CLK_SWR = 0xE1;    //内部16MHSI为主时钟源
      CLK_ICKR |= 0x05; //从halt模式唤醒使能、使能HSI时钟
      while((CLK_ICKR & 0x02) == 0x00); //等待HSI稳定就绪
}

//16MRC时钟1:2输出即Fmaster = Fhsi / 2 (00-1:1 01-1:2 10-1:4 11-1:8)
{
      CLK_CKDIVR &= ~(1 << 4);
      CLK_CKDIVR |= (1 << 3);
}

//Fcpu = Fmaster = 8M 这个才是真正的供CPU使用的时钟
CLK_CKDIVR &= ~((1 << 2) | (1 << 1) | (1 << 0));
//Fcpu = Fmaster / 2 = 4M
      CLK_CKDIVR |= (1 << 0);


//             CLK_CKDIVR = 0x00;             //16MHz主频
      CLK_PCKENR1 = 0x00;             //关闭所有外设时钟
      CLK_PCKENR2 = 0x00;
}

void awu_init(void)
{
CLK_PCKENR2 |= (1 << 2); //使能AWU时钟

//唤醒时间2.00S
AWU_TBR = 0x0D;
AWU_APR = 0x3E; //分频Fls
AWU_CSR1 |= 0x10; //AWU使能

CLK_ICKR |= (1 << 5); //活跃停机模式(AWU使能情况)下,关闭电压调节器节省功耗
FLASH_CR1 |= (1 << 2); //活跃停机模式下Flash掉电,默认只有停机模式才掉电,代价是唤醒时间增加至微秒级别

}

void tim1_init(void)
{
CLK_PCKENR1 |= (1 << 7);

//定时器时钟fck_cnt = Fck_psc / ( PSCR[15:0]+1); Fck_psc  = Fmaster = 8M
//fck_cnt = 8M / (799 + 1) = 10KHz 周期100us
TIM1_PSCRH = 0x03;
TIM1_PSCRL = 0x1F;    //(fCK_CNT)等于fCK_PSC/( PSCR[15:0]+1)。

// TIM1_CNTR寄存器计数到0x0064(100)为一次溢出:10ms
TIM1_ARRH = 0x00;
TIM1_ARRL = 0x64;

TIM1_IER = 0x01; //允许更新中断

//重复计数寄存器复位值为0，溢出一次即产生中断
//          TIM1_RCR = 50;    //重复计数寄存器值,这样timer1 2次50ms即100ms产生一次中断

TIM1_CR1 = 0x01;
}

void main(void)
{
sysclk_init();
adc_init();
timer1_init();
awu_init();
while(1)
{
         //关ADC
         ADC_CR1 &= ~(1 << 0);
         //关timer
         TIM1_CR1 &= ~0x01;
         CLK_PCKENR1 &= ~(1 << 7);
         asm("halt"); //进入睡眠模式
         asm("nop");
         asm("nop");
         enter_int(); //关全局中断
         CLK_PCKENR2 |= (1 << 3);
         ADC_CR1 &= ~(1 << 0);
         Delay_ms(10);
         ADC_CR1 |= (1 << 0);

         CLK_PCKENR1 |= (1 << 7);
         TIM1_SR1 &= ~0x01;//清除中断标志
         TIM1_CR1 = 0x01;
         exit_int(); //开全局中断
}
}