本例程是,STC官方的例程，学习过后，欲将其改造：通过按键改flag次数，然后将flag次数，写进EEPROM，再读取出来，相对应的LED状态随着flag的改变而改变。现在问题是:只能切换LED1和LED2的状态，不能同时亮或同时灭。不知问题出在哪里？请高手们不吝指导一下！谢谢！
#include "STC8G.h"
#include "intrins.h"
#define FOSC 11059200UL
#define BRT (65536 - FOSC / 115200 / 4)
#define uchar unsigned char
#define uint unsigned int
//sfr P0M1 = 0x93;
//sfr P0M0 = 0x94;
//sfr P1M1 = 0x91;
//sfr P1M0 = 0x92;
//sfr P2M1 = 0x95;
//sfr P2M0 = 0x96;
//sfr P3M1 = 0xb1;
//sfr P3M0 = 0xb2;
//sfr P4M1 = 0xb3;
//sfr P4M0 = 0xb4;
//sfr P5M1 = 0xc9;
//sfr P5M0 = 0xca;
//sfr AUXR = 0x8e;
//sfr T2H = 0xd6;
//sfr T2L = 0xd7;
//sfr IAP_DATA = 0xC2;
//sfr IAP_ADDRH = 0xC3;
//sfr IAP_ADDRL = 0xC4;
//sfr IAP_CMD = 0xC5;
//sfr IAP_TRIG = 0xC6;
//sfr IAP_CONTR = 0xC7;
//sfr IAP_TPS = 0xF5;
//void UartInit()
//{
// SCON = 0x5a;
// T2L = BRT;
// T2H = BRT >> 8;
// AUXR = 0x15;
//}
//void UartSend(char dat)
//{
// while (!TI);
// TI = 0;
// SBUF = dat;
//}
sbit LED1=P5^4;
sbit LED2=P3^3;
sbit KEY=P3^2;
// uchar V;
char flag=1;
void IapIdle()
{
EA=0; //禁止中断
IAP_CONTR = 0; //关闭IAP功能
IAP_CMD = 0; //清除命令寄存器
IAP_TRIG = 0; //清除触发寄存器
IAP_ADDRH = 0x80; //将地址设置到非IAP区域
IAP_ADDRL = 0;
EA=0; //重启中断
}
char IapRead(int addr)
{
char dat;
EA=0;
IAP_CONTR = 0x80; //使能IAP
IAP_TPS = 12; //设置等待参数12MHz
IAP_CMD = 1; //设置IAP读命令
IAP_ADDRL = addr; //设置IAP低地址
IAP_ADDRH = addr >> 8; //设置IAP高地址
IAP_TRIG = 0x5a; //写触发命令(0x5a)
IAP_TRIG = 0xa5; //写触发命令(0xa5)
_nop_();
dat = IAP_DATA; //读IAP数据
IapIdle(); //关闭IAP功能
EA=1;
return dat;
}
void IapProgram(int addr, char dat)
{
EA=0;
IAP_CONTR = 0x80; //使能IAP
IAP_TPS = 12; //设置等待参数12MHz
IAP_CMD = 2; //设置IAP写命令
IAP_ADDRL = addr; //设置IAP低地址
IAP_ADDRH = addr >> 8; //设置IAP高地址
IAP_DATA = dat; //写IAP数据
IAP_TRIG = 0x5a; //写触发命令(0x5a)
IAP_TRIG = 0xa5; //写触发命令(0xa5)
_nop_();
IapIdle(); //关闭IAP功能
EA=1;
}
void IapErase(int addr)
{
EA=0;
IAP_CONTR = 0x80; //使能IAP
IAP_TPS = 12; //设置等待参数12MHz
IAP_CMD = 3; //设置IAP擦除命令
IAP_ADDRL = addr; //设置IAP低地址
IAP_ADDRH = addr >> 8; //设置IAP高地址
IAP_TRIG = 0x5a; //写触发命令(0x5a)
IAP_TRIG = 0xa5; //写触发命令(0xa5)
_nop_(); //
IapIdle(); //关闭IAP功能
EA=1;
}
void main(void)
{
uchar V;
P0M0 = 0x00;
P0M1 = 0x00;
P1M0 = 0x00;
P1M1 = 0x00;
P2M0 = 0x00;
P2M1 = 0x00;
P3M0 = 0x00;
P3M1 = 0x00;
P4M0 = 0x00;
P4M1 = 0x00;
P5M0 = 0x00;
P5M1 = 0x00;
// UartInit();
// IapErase(0x0400);
// UartSend(IapRead(0x0400));
// P5=IapRead(0x0400);
// IapProgram(0x0400, 0x12);
// UartSend(IapRead(0x0400));
//P3=IapRead(0x0400);
IT0 = 0;
EX0 = 1;
EA = 1;
V = IapRead(0x0400); // 开机读取EEPROM区数据,还原关电前LED的亮灭状况
IapErase(0x0400); //擦除
while(1)
{
IapProgram(0x0400, V); //写入
V= IapRead(0x0400); //读取
for(V=flag;flag<=4;flag++)
{
if(V==1)
{
LED1=0;LED2=1;
IapErase(0x0400); // 擦除
IapProgram(0x0400, 1); //写入
}
if(V== 2)
{
LED1=1; LED2=0;
IapErase(0x0400); // 擦除
IapProgram(0x0400, 2); //写入
}
if(V== 3)
{
LED1=0; LED2=0;
IapErase(0x0400); // 擦除
IapProgram(0x0400, 3); //写入
}
if(V== 4)
{
LED1=1; LED2=1;
IapErase(0x0400); // 擦除
IapProgram(0x0400, 4); //写入
}
}
}
}
//--------------中断函数--------------
void int0_process() interrupt 0
{
if (KEY==1)
{
if(flag<=4)flag++;
else flag=1;
// _nop_();
// _nop_();
// _nop_();
// _nop_();
}
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