yan zhang / Mbed 2 deprecated Nucleo401_SIM808_GPS

gps_test

Dependencies:   mbed

main.cpp@0:23342e031341, 2017-06-24 (annotated)

Committer:
donghuoyinzi
Date:
Sat Jun 24 09:55:03 2017 +0000
Revision:
0:23342e031341
gps_test

Who changed what in which revision?

UserRevisionLine numberNew contents of line
donghuoyinzi 0:23342e031341 1 #include "mbed.h"
donghuoyinzi 0:23342e031341 2 #include <string>
donghuoyinzi 0:23342e031341 3
donghuoyinzi 0:23342e031341 4 #define buf_max 256
donghuoyinzi 0:23342e031341 5
donghuoyinzi 0:23342e031341 6 Serial pc(SERIAL_TX, SERIAL_RX);
donghuoyinzi 0:23342e031341 7 Serial sim808(PA_9, PA_10);
donghuoyinzi 0:23342e031341 8 DigitalOut sim_power(D4);//PB_5 //复位SIM808
donghuoyinzi 0:23342e031341 9
donghuoyinzi 0:23342e031341 10 int rec_cnt = 0; //receive count
donghuoyinzi 0:23342e031341 11 char result[buf_max];
donghuoyinzi 0:23342e031341 12
donghuoyinzi 0:23342e031341 13 void sim_callback()
donghuoyinzi 0:23342e031341 14 {
donghuoyinzi 0:23342e031341 15 char x;
donghuoyinzi 0:23342e031341 16 x = sim808.getc();
donghuoyinzi 0:23342e031341 17 result[rec_cnt++]= x;
donghuoyinzi 0:23342e031341 18 pc.putc(x);
donghuoyinzi 0:23342e031341 19 if(rec_cnt>=buf_max-1)rec_cnt=0;
donghuoyinzi 0:23342e031341 20 }
donghuoyinzi 0:23342e031341 21 bool sim_wait(int x)
donghuoyinzi 0:23342e031341 22 {
donghuoyinzi 0:23342e031341 23 char *p;
donghuoyinzi 0:23342e031341 24 rec_cnt = 0;
donghuoyinzi 0:23342e031341 25 memset(result,0,buf_max*sizeof(char));
donghuoyinzi 0:23342e031341 26 while(x)
donghuoyinzi 0:23342e031341 27 {
donghuoyinzi 0:23342e031341 28 wait(1);
donghuoyinzi 0:23342e031341 29 p=strstr(result,"OK");
donghuoyinzi 0:23342e031341 30 if(p)
donghuoyinzi 0:23342e031341 31 {
donghuoyinzi 0:23342e031341 32 return true;
donghuoyinzi 0:23342e031341 33 }
donghuoyinzi 0:23342e031341 34 x--;
donghuoyinzi 0:23342e031341 35 }
donghuoyinzi 0:23342e031341 36 return false;
donghuoyinzi 0:23342e031341 37 }
donghuoyinzi 0:23342e031341 38
donghuoyinzi 0:23342e031341 39 int main()
donghuoyinzi 0:23342e031341 40 {
donghuoyinzi 0:23342e031341 41 pc.baud(115200);
donghuoyinzi 0:23342e031341 42 sim808.baud(115200);
donghuoyinzi 0:23342e031341 43 sim808.attach(&sim_callback,SerialBase::RxIrq);
donghuoyinzi 0:23342e031341 44
donghuoyinzi 0:23342e031341 45 pc.printf("AT+CGNSPWR=1\r\n"); //打开GPS
donghuoyinzi 0:23342e031341 46 sim808.printf("AT+CGNSPWR=1\r\n");
donghuoyinzi 0:23342e031341 47
donghuoyinzi 0:23342e031341 48 if(sim_wait(1)){
donghuoyinzi 0:23342e031341 49 pc.printf("GPS Open Success\r\n");
donghuoyinzi 0:23342e031341 50 }
donghuoyinzi 0:23342e031341 51 else{
donghuoyinzi 0:23342e031341 52 pc.printf("GPS Open Failed\r\n");
donghuoyinzi 0:23342e031341 53 }
donghuoyinzi 0:23342e031341 54 pc.printf("AT+CGNSURC=1\r\n"); //每秒发送一次GPS定位信息
donghuoyinzi 0:23342e031341 55 sim808.printf("AT+CGNSURC=1\r\n");
donghuoyinzi 0:23342e031341 56 wait(10);
donghuoyinzi 0:23342e031341 57 pc.printf("AT+CGNSPWR=0\r\n"); //关闭GPS
donghuoyinzi 0:23342e031341 58 sim808.printf("AT+CGNSPWR=0\r\n");
donghuoyinzi 0:23342e031341 59 }