STC8A单片机通过串口写入数据存到EEPROM，两条命令单独运行正常，一起运行有一条me... -

#include "Uart.h"
bit busy; //判忙标志
uchar idata SinBuf[20]; //接收缓冲区
uint SinP; //接收指针
uchar idata SoutBuf[20]; //发送缓冲区
uint SoutP; //发送指针
uchar Send_OK,Sin_OK; //发送完成标志
U32 Ul_Value,RXDATA,ADDR_485; //超声波值
/**************************************初始化串口********************************************/
void UartInit(void)
{
SCON = 0x50;
T2L = BRT;
T2H = BRT >> 8;
AUXR = 0x15;
busy = 0;
ES = 1;
EA = 1;
}
/**************************************串口服务函数*******************************************/
void ReceiveChar (void) interrupt 4 using 3
{
uchar ch;
uchar idata Start=0xCF;//帧头；
uchar idata End=0xFD;//帧尾;
static bit bReceiveAdr= 0; //接收地址标志
uchar ucharAdr;//存放地址;
static bit bReceiveCmd= 0; //接收命令标志
uchar ucharCmd; //存放命令;
static bit bReceiveEnd=0;//接收帧尾标志;
bit bReceiveComplete=0; //收到一个完整的数据包(导引头+地址+数据+帧尾)例：CF 00 04 FD
//*********************
if (RI)
{
ES = 0;
RI = 0;
ch=SBUF;
SinBuf[SinP]=ch;
SinP= SinP+1;
SW_Ctrl = 0;
if(ch==Start)//如果收到帧头;
{
bReceiveAdr=1;//接收地址标志1,准备接收地址;
bReceiveComplete=0;// 完整帧数据包状态为0;
}
else if(bReceiveAdr==1)//开始接收地址
{ ucharAdr=SinBuf[2];
bReceiveAdr=0;//清除地址标志；
bReceiveCmd=1;//准备接收命令;
}
else if(bReceiveCmd==1)//开始接收命令;
{ ucharCmd=ch;
bReceiveCmd=0;
bReceiveEnd=1;
}
else if(bReceiveEnd ==1 &&(SinBuf[3]==End))//如果帧尾是End;//就代表一帧数据包完成；
{ bReceiveComplete=1;
}
else//收到干扰;
{
bReceiveAdr=0;
bReceiveCmd=0;
bReceiveEnd=0;
bReceiveComplete=0;
//ucharAdr=0;
}
if(bReceiveComplete ==1)//如果有完整的数据包;
{
if(SinBuf[2]==0x04)//查询 //如果是查询命令，就把对应的地址位的值取回来，按格式发回上位机；
{
CommandType();
SinP= 0;
Sin_OK = 1;
}
}
if (SinBuf[0] != 0x06 )
{
SinP= 0;
SinBuf[1] = 0;
}
if ((SinP == 8)&& (SinBuf[3] == 0x00))//修改这行可更换寄存器地址
{
SinP= 0;
Send_OK = 1;
//return;
}
ES = 1;
}
if (TI)//发送----------------
{
ES = 0;
TI = 0;
if (SoutP < 7)
{
SBUF = SoutBuf[SoutP];
SoutP= SoutP+ 1;
}
}
else
{
SW_Ctrl = 0;
SoutP=1;//发送指针归零
}
ES = 1;
}//发送
/**************************************发送03号指令*******************************************/
void Respond03(void)
{
unsigned int x;
unsigned int i ;
SoutBuf[0] = 0x06;//
SoutBuf[1] = 0x03;//A型号:01,B型号：02
SoutBuf[2] = 0x02;
SoutBuf[3] = ((Ul_Value & 0xFF00)>>8);
SoutBuf[4] = (Ul_Value & 0x00FF);
x = 0xffff;
for (i = 0;i<5 ; i++)
x = CRC_modbus_rtu(x,SoutBuf[i]);
SoutBuf[5] = (x & 0x00FF);
SoutBuf[6] = ((x & 0xFF00)>>8);
SoutP = 1;
SW_Ctrl = 1;
SBUF = 0x06;//启动中断发送
}
/*-------------------------------------------------------------
调用方式：void CommandType(void)
函数说明：
---------------------------------------------------------------*/
void CommandType(void)
{
// uchar CommandLong;
// CommandLong = SinBuf[1];
// if (SinBuf[0] != 0xCF)
// return;
// if (SinBuf[CommandLong - 1] != 0xFD)
// return;
switch (SinBuf[1])
{
case 0x01://采集器发送请求
{
RXDATA = 0x01;
IapErase(0x0400); //擦除0400扇区数据
IapProgram(0x0400, RXDATA); //在0400写入数据
break;
}
case 0x02:
{
RXDATA = 0x02;
IapErase(0x0400); //擦除0400扇区数据
IapProgram(0x0400, RXDATA); //在0400写入数据
break;
}
case 0x03:
{
RXDATA = 0x03;
IapErase(0x0400); //擦除0400扇区数据
IapProgram(0x0400, RXDATA); //在0400写入数据
break;
} case 0x04:
{
RXDATA = 0x04;
IapErase(0x0400); //擦除0400扇区数据
IapProgram(0x0400, RXDATA); //在0400写入数据
break;
} case 0x05:
{
RXDATA = 0x05;
IapErase(0x0400); //擦除0400扇区数据
IapProgram(0x0400, RXDATA); //在0400写入数据
break;
} case 0x06:
{
RXDATA = 0x06;
IapErase(0x0400); //擦除0400扇区数据
IapProgram(0x0400, RXDATA); //在0400写入数据
break;
} case 0x07:
{
RXDATA = 0x07;
IapErase(0x0400); //擦除0400扇区数据
IapProgram(0x0400, RXDATA); //在0400写入数据
break;
} case 0x08:
{
RXDATA = 0x08;
IapErase(0x0400); //擦除0400扇区数据
IapProgram(0x0400, RXDATA); //在0400写入数据
break;
} case 0x09:
{
RXDATA = 0x09;
IapErase(0x0400); //擦除0400扇区数据
IapProgram(0x0400, RXDATA); //在0400写入数据
break;
} case 0x0A:
{
RXDATA = 0x0A;
IapErase(0x0400); //擦除0400扇区数据
IapProgram(0x0400, RXDATA); //在0400写入数据
break;
}
}
}
void Respond01(void)
{
ADDR_485 = RXDATA;
SoutBuf[0] = 0xCF;//
SoutBuf[1] = ADDR_485;//A型号:01,B型号：02
SoutBuf[2] = 0x04;
SoutBuf[3] = 0xFD;
SoutP = 1;
SW_Ctrl = 1;
SBUF = 0xCF;//启动中断发送
}
void Respond02(void)
{
SoutBuf[0] = 0xCF;//
SoutBuf[1] = ADDR_485;//A型号:01,B型号：02
SoutBuf[2] = 0x04;
SoutBuf[3] = 0xFD;
SoutP = 1;
SW_Ctrl = 1;
SBUF = 0xCF;//启动中断发送
}

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