gsm.c

GPS驱动集合

char code AT_Tc35[]="AT+";    //连机
char code Bps_Tc35[]="IPR=38400";  //波特率
char code Text_Tc35[]="CMGF=1";    //文本模式
char code Read_Tc35[]="CMGR=";  //读信息
char code Erase_Tc35[]="CMGD=";  //删除信息
char code Send_Tc35[]="CMGS=";  //发送信息
char code Creg_Tc35[]="CREG?";    //注册

//模式设置
void UART_Init(void)
{
SCON=0x50;    //01010000b=>1模式scon,#11011000b;
ES=l;
}

//发送-个ASCII
void SendASC(unsigned char ASC)
{
bit es;
es=ES;
ES=0;//关闭中断
TI=0;
SBUF=ASC;
while(!TI);
TI=0;
ES=es;
)

//发送命令到TC35
void SendToTc35(unsigned char* p,unsigned char Long)
{
while(Long--)
{
    SendASC(*p++);
  }
}

//  通讯中断接收程序
void Rs485_Do(void) interrupt 4 using 1
  {
  if(RI==l)
  {
    RI=0;
    RsBuq[RsPoint++]=SBUF;
    if fRsPoint>=sizeof(RsBuf))
    {
    RsPoint=0;//FlagRs485=0;
    }  //数据处理
  }
 }

// 发送AT连机命令
char code AT_Code[]="OK";
void Send_AT(void)
{
unsigned char *p;
while(1)
{
    ClrRsBuf(RsBuf,sizeof(RsBuf));
    SendToTc35(AT_Tc35,2);    //"AT"
    SendASC(OVER);
//************等待应答“ok"
    ES=1;    //必须中断
    Delay(50);
    P=strstr(RsBuf,AT_Code);
    if(p!=NULL) break;
}
)

//发送bps连机命令
void Send_BPS(void)
{
 SendToTc35(AT_Tc35,3);    //"AT+"
 SendToTc35(Bps_Tc35,sizeof(Bps_Tc35)-1);//"IPR=19200"
 SendASC(OVER);
}

//设置文本
void SetText(void)
{
SendToTc35(AT_Tc35,3);    //"AT+"
SendToTc35(Text_tc35,sizeof(Text_tc35)-1);//"IPR=19200"
SendASC(OVER);
Delay(100)：

//删除短信息
unsigned char EraseMsg(unsigned char index)
{
 unsigned char *p,i=20;
 SendToTc35(AT_Tc35,3);    //"AT+"
 SendToTc35(Erase_Tc35,sizeof(Erase_Tc35)-1);//"IPR=19200"
 SendASC(index);
 SendASC(OVER);
 ES=1;
 while(i--)
{
    Delay(200);
    P=strstr(RsBuf,AT_Code);
    if(P!=NULL)    {return 1;}
}
return 0;
}

//读取短信息
char code Ask_No[]="+CMGR:0,,0";
char code ERROR{]="ERROR";
char code Ask_Tc35[]="/";
unsigned char ReadMsg(unsigned char index)
{
unsigned char *p,i;
unsigned char Buf[40];
SendToTc35(AT_Tc35,3);    //"AT+"
SendToTc35(Read_Tc35,sizeof(Read_Tc35)-1);
SendASC(index);
SendASC(OVER);
ES=1;    //必须中断
Delay(600);
/*-------
    ES=0：
    SendToTc35(RsBuf,99);
    ES=1;
*/|

p=strstr(RsBuf,ERROR);
if(P!=NULL)
{
    Send_AT();return 0;
p=strstr(RsBuf,Ask_No);//无信息
if(p!=NULL)return 0;
p=strstr(RsBuf,Ask_Tc35);//20个字节后是MSG
if(p==NULL) return 0;
p=p+21;
for(i=0;i<sizeof(Buf);i++)
{
  Buf[i]=*p++;
}

if(EraseMsg(index)==0) return 0;
p=strcpy(RsBuf,Buf);  //放回RsBuf
 return 1;
)

//发送短信息
char code SK[]=">";
void SendMsgStart(void)
{
unsigned char *p,i=10;
SendToTc35(AT_Tc35,3);    //"AT+"
SendToTc35(Send_Tc35,sizeof(Send_Tc35)-1);//"IPR=19200"
SendASC(YinHao);
SendToTc35(Mp1.Hand,sizeof(Mp1.Hand));    //"AT+"
SendASC(YinHao);
SendASC(OVER);
ES=1;
while(i--)
{
  Delay(100);  //Get">"
  p=strstr(RsBuf,SK);//">"
  if(p!=NULL)
  {
    ClrRsBuf(RsBuf,sizeof(RsBuf));
    Delay(150);  //Get">"
    break;
}
}
}