SMS based GPS tracker

Diff: main.cpp

Revision:

0:5b4bcbd69509

Child:

1:00c7dc0c1761

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Sat Oct 06 22:47:34 2012 +0000
@@ -0,0 +1,128 @@
+#include "mbed.h"
+#include "GPS.h"
+#include "rtos.h"
+#include "MODSERIAL.h"
+#include <string>
+#include <iostream>
+
+using namespace std;
+
+const string GoogleChunk = "https://maps.google.com.au/maps?q=";
+const string GoogleExtras = "&z=20";
+char GPRSbuffer[512];
+int index;
+int i = 0;
+
+GPS gps(p9,p10);
+MODSERIAL GPRS(p13,p14);                                      // MODSERIAL for rxBufferFlush()
+MODSERIAL pc(USBTX,USBRX);
+
+DigitalOut myled1(LED1);
+DigitalOut myled2(LED2);
+DigitalOut myled3(LED3);
+DigitalOut myled4(LED4);
+
+void led_thread(void const *argument)                         // Some light jazz in a thread
+{
+    while (true) {
+        DigitalOut leds[4] = {myled1, myled2, myled3, myled4};
+        int pattern[6][4] = {{1,0,0,0},{0,1,0,0},{0,0,1,0},{0,0,0,1},{0,0,1,0},{0,1,0,0}};
+        int i=0;
+        while(1) {
+            leds[0] = pattern[i][0];
+            leds[1] = pattern[i][1];
+            leds[2] = pattern[i][2];
+            leds[3] = pattern[i][3];
+            wait(0.2);
+            i++;
+            i == 6? i=0:0;
+        }
+    }
+}
+
+void sendSms()
+{
+    // Set message mode to ASCII
+    GPRS.printf("AT+CMGF=1\r\n");
+    wait(1);
+    // Set the phone number
+    GPRS.printf("AT+CMGS=\"+614<<NUMBER>>\"\r\n");
+    wait(1);
+    // Write out the GPS data in a message
+    GPRS.printf("Time: %4.2f \nAltitude: %3.2fm\nSpeed: %3.2f Kn\nHeading: %3.2f Deg\nValidity: %c\nFix: %s\nSatellites: %d", gps.time, gps.altitude, gps.speed, gps.heading,gps.validity,gps.fixtype,gps.satellites);
+    wait(1);
+    // Send it...
+    GPRS.putc(0x1A);
+    wait(3);
+    GPRS.printf("AT+CMGF=1\r\n");
+    wait(1);
+    GPRS.printf("AT+CMGS=\"+614<<NUMBER>>\"\r\n");
+    wait(1);
+    GPRS.printf("Find me at....\n %s%f,%f%s", GoogleChunk, gps.latitude, gps.longitude, GoogleExtras);
+    wait(1);
+    GPRS.putc(0x1A);
+}
+
+void parseSms()
+{
+    // If theres a char waiting in the MODSERIAL buffer
+    while (GPRS.readable()) {
+        // Assign it to 'c'
+        char c = GPRS.getc();
+        // Replace all returns and or line endings with money!
+        if (c == '\r' || c == '\n') c = '$';
+        // Put it in the array
+        GPRSbuffer[i] = c;
+        // Repeat if possible
+        i++;
+    }
+    // Uncomment the following to debug
+
+    //pc.printf("buffer = %s", GPRSbuffer);
+    //pc.printf("index  = %d", index);
+
+    // If we get an SMS notification....
+    if (sscanf(GPRSbuffer, "$$+CMTI: \"SM\",%d", &index)>0) {
+        // Do the send SMS routine...
+        sendSms();
+        // Wait for the cascade of \r\nOK\r\n\r\nOK\r\n's from the SMS's to finish
+        wait(4);
+        // Flush out any left in the serial buffer
+        GPRS.rxBufferFlush();
+        // Reset the GPRS buffer
+        memset(GPRSbuffer, '0', 512);
+        // Reset the char counter
+        i = 0;
+    } else pc.printf("\nWaiting for SMS...\n");
+}
+
+int main()
+{
+    pc.baud(115200);
+    GPRS.baud(19200);
+    Thread thread(led_thread);
+    pc.printf("I'm Alive...\n");
+    // Setup the GPS
+    gps.Init();
+    // Set the GPRS AT echo off
+    GPRS.printf("ATE0\r\n");
+    pc.printf("GPRS Echo OFF\n");
+    wait(1);
+    // Delete all messages on the sim card
+    GPRS.printf("AT+CMGDA=\"DEL ALL\"\r\n");
+    wait(1);
+    pc.printf("Messages Cleared...\n");
+    wait(1);
+    // Flush out any \r\nOK\r\n's
+    GPRS.rxBufferFlush();
+    // Get in a while loop
+    while (1) {
+        // Process any recieved data
+        parseSms();
+        // Process / check GPS data
+        if(gps.parseData()) {
+            pc.printf("\nGo to %s%f,%f%s\n", GoogleChunk, gps.latitude, gps.longitude, GoogleExtras);
+            pc.printf("\n\nLocation: %f%c, %f%c \nTime: %4.2f \nSatellites: %d \nAltitude: %3.2f\nSpeed: %3.2f\nHeading: %3.2f\nValidity: %c\n",gps.latitude, gps.ns, gps.longitude, gps.ew, gps.time, gps.satellites, gps.altitude, gps.speed, gps.heading,gps.validity);
+        } else pc.printf("Aquiring Satellites...\n");
+    }
+}