gps.rar_A-GPS_GPS_GPS-OEM_gps 手机_手机 gps

#include <stdio.h> #include <string.h> #include <dos.h> #define LSB 0 #define MSB 1 #define RXR 0 #define TXR 0 #define IER 1 #define IIR 2 #define LCR 3 #define MCR 4 #define LSR 5 #define MSR 6 #define Com1_base 0x3f8 #define uchar unsigned char volatile uchar i=0; volatile uchar flag=0; volatile uchar inputdata; volatile uchar onInput = 0x00; volatile uchar onOutput = 0x00; uchar r=0; uchar data [255]; uchar datad [255]; void interrupt (*OldVect)(); void interrupt SerialISR(); void InitCom() { uchar inttemp; /*设置波特率什么的*/ outportb(Com1_base+LCR,0x80); outportb(Com1_base+LSB,0x0c); outportb(Com1_base+MSB,0x00); outportb(Com1_base+LCR,0x03); outportb(Com1_base+IER,0x01); /*设置中断向量*/ OldVect = getvect(0x0c); disable(); inttemp = inportb(0x21)&0xef; outportb(0x21,inttemp); setvect(0x0c,SerialISR); enable(); } void CloseCom() { disable(); outportb(Com1_base+IER,0x00); outportb(Com1_base,0x00); outportb(0x21,inportb(0x21)|~(0xef)); setvect(0x0c,OldVect); } void interrupt SerialISR() { /*串口中断服务代码*/ inputdata = inportb(Com1_base+RXR); inputdata ='$'; if(inputdata==10) { flag==0; outportb(0x20,0x20); /*中断结束的代码*/ } if(inputdata=='$') { flag=1; i=1; /*服务代码结束*/ outportb(0x20,0x20); /*中断结束的代码*/ } if(flag==1) { data[i]=inputdata; i++; } } void SendChar(uchar key) { while( ((inportb(Com1_base + LSR)) & 0x40) == 0); outportb(Com1_base + TXR,key); } void main() { uchar key; uchar m_sTime,SectionID; InitCom(); while(1) { printf("Bye~.\n"); if(data[3]=='$') { strcpy (data ,datad); for(r=0;r<255;r++){ if(datad[i]=='$') //帧头，SectionID为逗号计数器 SectionID=0; if(datad[i]==10){ //帧尾 } if(datad[i]==',') //逗号计数 SectionID++; else { switch(SectionID){ case 1: //提取出时间 m_sTime+=datad[i]; printf("%s\n",m_sTime); break; case 2: //判断数据是否可信(当GPS天线能接收到有3颗GPS卫星时为A，可信) if(datad[i]=='A') //　　GPSParam[m_nNumber].m_bValid=true; break; case 3: //提取出纬度 // m_sPositionY+=datad[i]; break; case 5: //提取出经度 // m_sPositionX+=datad[i]; break; case 9: //提取出日期 // m_sDate+=datad[i]; break; default: break; } } } } } CloseCom(); printf("Bye~.\n"); }