ir.c

这是一个大模式下ucos51的移植结果,因为大部分可载的ucos51都是小模式下的

#include <REG52.H>
unsigned char gIrArr[6];

#define TIME_0_00MS        0x0000
#define TIME_1_00MS        0x039a
#define TIME_1_13MS        0x0480
#define TIME_2_00MS        0x0733
#define TIME_2_50MS        0x0900
#define TIME_13_2MS        0x2ecd
#define TIME_20_0MS        0x47ff
#define TIME1_LOAD        (0xffff - TIME_20_0MS)

bit running;
long Irbuf;
unsigned char Irdat;
bit Irok;


void int1_isr(void) interrupt 2            //遥控使用外部中断0,接P3.2口
{
unsigned int timer; 
static char x=0x03;
	TR0 = 0;
	timer = ((TH0 << 8) | TL0) - TIME1_LOAD;
	TH0 = TIME1_LOAD >> 8;
	TL0 = TIME1_LOAD & 0xff;
x=(x ^ 0xff);
	*((char xdata *)0xd000)=x;
	TR0=1;
	if        (timer > TIME_1_00MS && timer < TIME_1_13MS)     //data 0
		Irbuf = (Irbuf << 1) & 0xfffffffe;
	else if    (timer > TIME_2_00MS && timer < TIME_2_50MS)     //data 1
		Irbuf = (Irbuf << 1) | 0x00000001;
	else if    (timer == TIME_0_00MS || timer > TIME_13_2MS)
		Irbuf = 0x0000;
	else
		;
	if    (((Irbuf >> 8) & 0xff) == ((~(Irbuf >> 0)) & 0xff))
	{
		Irdat = (Irbuf>>8) & 0xff;
		gIrArr[0]=(Irdat / 100) + 0x30;

		gIrArr[1]=((Irdat % 100) / 10) + 0x30;
		gIrArr[2]=(Irdat % 10) +0x30;
		gIrArr[3]='\n';
		gIrArr[4]='\r';
	}
}