关于进入中断后

只看该作者 · 2013-1-23 21:44

我在主函数中初始化后开了全局中断 _asm("rim")后单片机重新上电运行后就进入@far @interrupt void NonHandledInterrupt (void)这个中断函数，大约得1分钟左右吧  才能从那个中断跳出来，这是为什么呀？

@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;
}

extern void _stext();    /* startup routine */

struct interrupt_vector const _vectab[] = {
   {0x82, (interrupt_handler_t)_stext}, /* reset */
   {0x82, NonHandledInterrupt}, /* trap  */
   {0x82, NonHandledInterrupt}, /* irq0  */
   {0x82, NonHandledInterrupt}, /* irq1  */
   {0x82, NonHandledInterrupt}, /* irq2  */
   {0x82, NonHandledInterrupt}, /* irq3  */
   {0x82, NonHandledInterrupt}, /* irq4  */
   {0x82, NonHandledInterrupt}, /* irq5  */
   {0x82, NonHandledInterrupt}, /* irq6  */
   {0x82, NonHandledInterrupt}, /* irq7  */
   {0x82, NonHandledInterrupt}, /* irq8  */
   {0x82, NonHandledInterrupt}, /* irq9  */
   {0x82, NonHandledInterrupt}, /* irq10 */
   {0x82, NonHandledInterrupt}, /* irq11 */
   {0x82, NonHandledInterrupt}, /* irq12 */
   {0x82, NonHandledInterrupt}, /* irq13 */
   {0x82, NonHandledInterrupt}, /* irq14 */
   {0x82, NonHandledInterrupt}, /* irq15 */
   {0x82, NonHandledInterrupt}, /* irq16 */
   {0x82, NonHandledInterrupt}, /* irq17 */
   {0x82, NonHandledInterrupt}, /* irq18 */
   {0x82, NonHandledInterrupt}, /* irq19 */
   {0x82, NonHandledInterrupt}, /* irq20 */
   {0x82, NonHandledInterrupt}, /* irq21 */
   {0x82, NonHandledInterrupt}, /* irq22 */
   {0x82, UART_LIN}, /* irq23 */
   {0x82, NonHandledInterrupt}, /* irq24 */
   {0x82, NonHandledInterrupt}, /* irq25 */
   {0x82, NonHandledInterrupt}, /* irq26 */
   {0x82, NonHandledInterrupt}, /* irq27 */
   {0x82, NonHandledInterrupt}, /* irq28 */
   {0x82, NonHandledInterrupt}, /* irq29 */
};