main.cpp

00001 // ----------------------------------------------------------------------------
00002 // Copyright 2016-2017 ARM Ltd.
00003 //
00004 // SPDX-License-Identifier: Apache-2.0
00005 //
00006 // Licensed under the Apache License, Version 2.0 (the "License");
00007 // you may not use this file except in compliance with the License.
00008 // You may obtain a copy of the License at
00009 //
00010 //     http://www.apache.org/licenses/LICENSE-2.0
00011 //
00012 // Unless required by applicable law or agreed to in writing, software
00013 // distributed under the License is distributed on an "AS IS" BASIS,
00014 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00015 // See the License for the specific language governing permissions and
00016 // limitations under the License.
00017 // ----------------------------------------------------------------------------
00018 
00019 #include "mbed.h"
00020 
00021 #include "GroveGPS.h"
00022 
00023 extern int GPS_init();
00024 extern GroveGPS gps;
00025 Thread gpsThread(osPriorityNormal);
00026 
00027 
00028 // Runs at 1Hz and updates the GPS location every second
00029 void gps_updater_thread() {
00030     int tt, hours, minutes, seconds, tday;
00031     int months[] = {0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
00032     printf("Thread Initialized\r\n");
00033     while(true) {
00034         char latBuffer[16], lonBuffer[16];
00035         gps.getLatitude(latBuffer);
00036         gps.getLongitude(lonBuffer);
00037 
00038         // Utilize latitude and longitude values here
00039         printf("\r\nLa=%s Lo=%s\r\n", latBuffer, lonBuffer);
00040         tt = gps.gps_zda.utc_time;
00041         hours = tt / 10000;
00042         tt = tt - (hours*10000);
00043         minutes = tt / 100;
00044         seconds = tt - (minutes*100);
00045         // Correct UTC to PAcific time
00046         hours -= 7;
00047         tday = gps.gps_zda.day;
00048             if(hours < 0) { // UTC Correct
00049                 hours += 24;
00050              tday -= 1;
00051              if(!tday) {
00052                  tday = months[gps.gps_zda.month];
00053                  }
00054             }
00055         printf("\r\n%02d", seconds);
00056         wait(1);
00057     }
00058 }
00059 
00060 int main() {
00061     GPS_init();
00062     printf("GPS Initialized\r\n");
00063     // Start a thread to get updated GPS values
00064     gpsThread.start(callback(gps_updater_thread));
00065 
00066     // do nothing while the library does all the work
00067     while (true) {
00068 
00069     }
00070 
00071     return 0;
00072 }