main.c

f2812内部timer转换程序

#include "F281X.h"
#include "Macro.h"

extern cregister volatile Uint16 IFR;
extern cregister volatile Uint16 IER;

void inittimer0(void);
void initsys(void);
interrupt void timer0_int(void);

Uint16 test = 0;

main()
{
	initsys();
	inittimer0();
	while(1);
}

void inittimer0(void)
{
	DINT;
	EALLOW;
	TIMER0TCR = (BIT11_16 | BIT5_16 | BIT4_16);
	TIMER0PRD = 150000000;
	TIMER0TPR = 0;
	TIMER0TIM = 0;
	TIMER0TCR = (BIT14_16 | BIT11_16 | BIT5_16); 
	EDIS;
	EINT;
}

void initsys(void)
{
	EALLOW;
	IER = 0x0000;
    IFR = 0x0000;
	PLLCR = 0x000a;
	PCLKCR = 0x0008;
	HISPCP = 0x0002;
	WDCR= 0x0068;
	asm(" C28OBJ");
	
	SetBit0_16(PIECTRL);
	// Clear all PIEIER registers:
    PIEIER1 = 0;
	PIEIER2 = 0;
	PIEIER3 = 0;
	PIEIER4 = 0;
	PIEIER5 = 0;
	PIEIER6 = 0;
	PIEIER7 = 0;
	PIEIER8 = 0;
	PIEIER9 = 0;
	PIEIER10 = 0;
	PIEIER11 = 0;
	PIEIER12 = 0;
	// Clear all PIEIFR registers:
	PIEIFR1 = 0;
	PIEIFR2 = 0;
	PIEIFR3 = 0;
	PIEIFR4 = 0;
	PIEIFR5 = 0;
	PIEIFR6 = 0;
	PIEIFR7 = 0;
	PIEIFR8 = 0;
	PIEIFR9 = 0;
	PIEIFR10 = 0;
	PIEIFR11 = 0;
	PIEIFR12 = 0;
	
	SetBit0_16(IER);
	SetBit6_16(PIEIER1);
	
	TINT0_ISR = (unsigned long)&timer0_int;
	EDIS;
}

interrupt void timer0_int(void)
{
	DINT;
	test = 1;
	PIEACK = 0x0001;
	EINT;
}