timer.c

来自「在MC68HC908JB8上移植UCOSII成功」· C语言 代码 · 共 26 行

#include "timer.h"
#include "includes.h"
#include "hc08jb8.h"

void TimerInit(void)
{
	TSC  = TMR_TSTOP | TMR_TRST | TMR_TOF;		// timer stop and reset
	TMODH = (unsigned char)(60000 >> 8);
	TMODL = (unsigned char)(60000);
	TSC  = TMR_PRESCALER | TMR_TOIE;	// timer run
}


#pragma TRAP_PROC
void OSTickISR(void)
{
	while(TSC&TMR_TOF)
	{
		TSC = TSC&(~TMR_TOF);
	}
	OSIntNesting++;
	OS_EXIT_CRITICAL();
	OSTimeTick();
    	OSIntExit();
}