M261的定时器，偏差很大，600秒差不多10秒的误差，咋办？
用了TIMER0作为定时器，采用内部高速时钟作为时钟源，系统时钟设置为4MHz.
- void TMR0_IRQHandler(void)
- {
- TMR0_COUNT++;
-
- TIMER_ClearIntFlag(TIMER0);
- }
- void TIMER0_INIT(void)
- {
- /* setting take effect */
-
- TIMER_Open(TIMER0, TIMER_PERIODIC_MODE, 1);
- CLK_SysTickDelay(50);
- /* Enable timer wake up system */
- TIMER_EnableWakeup(TIMER0);
- CLK_SysTickDelay(50);
- /* Enable Timer0 interrupt */
- TIMER_EnableInt(TIMER0);
- CLK_SysTickDelay(50);
- NVIC_EnableIRQ(TMR0_IRQn);
- /* Start Timer0 counting */
- TIMER_Start(TIMER0);
- CLK_SysTickDelay(50);
- }
| 
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