Chaitanya Shinde
Grove GPS sensor with FRDM K64F to get NMEA data and to parse the NMEA sentences to get the Latitude and Longitude information.
Diff: main.cpp
- Revision:
- 0:0da308226fbd
- Child:
- 1:694c547e2961
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Wed Apr 19 20:39:26 2017 +0000
@@ -0,0 +1,122 @@
+#include "mbed.h"
+
+Serial pc(USBTX, USBRX);
+Serial gps(PTB11, PTB10);
+
+int main()
+{
+ pc.baud(9600);
+ gps.baud(9600);
+
+ char buffer[128]; // NMEA data, Example: $GPGGA,123519,4807.038,N,01131.000,E,1,08,0.9,545.4,M,46.9,M,,*47
+ char * split;
+ char part1[12] = ""; // GGA Global Positioning System Fix Data
+ char part2[12] = ""; // 123519 Fix taken at 12:35:19 UTC
+ char part3[12] = ""; // 4807.038 Latitude 48 deg 07.038'
+ char part4[12] = ""; // N Direction - North
+ char part5[12] = ""; // 01131.000 Longitude 11 deg 31.000'
+ char part6[12] = ""; // E Direction - East
+ char part7[12] = ""; // 1 Fix quality: 0 = invalid
+ // 1 = GPS fix (SPS)
+ // 2 = DGPS fix
+ // 3 = PPS fix
+ // 4 = Real Time Kinematic
+ // 5 = Float RTK
+ // 6 = estimated (dead reckoning) (2.3 feature)
+ // 7 = Manual input mode
+ // 8 = Simulation mode
+ char part8[12] = ""; // 08 Number of satellites being tracked
+ char part9[12] = ""; // 0.9 Horizontal dilution of position
+ char part10[12] = ""; // 545.4 Altitude, Meters
+ char part11[12] = ""; // M above mean sea level
+ char part12[12] = ""; // 46.9 Height of geoid (mean sea level) above WGS84 ellipsoid
+ char part13[12] = ""; // M above mean sea level
+ char part14[12] = ""; // (empty field) time in seconds since last DGPS update
+ char part15[12] = ""; // *47 the checksum data, always begins with *
+
+ //int count=0;
+
+ pc.printf(" Hello World!\r\n");
+
+ while(true) {
+ // if(pc.readable()) {
+ // gps.putc(pc.getc());
+ // }
+
+ if(gps.readable()) {
+ gps.gets(buffer, 70);
+
+ if(buffer[0] == '$' && buffer[5] == 'A') //&& buffer[2] == '' && buffer[1] == 'G' && buffer[1] == 'G')
+ {
+ pc.printf("NMEA data = '%s'\r\n", buffer); // NMEA data, Example: $GPGGA,123519,4807.038,N,01131.000,E,1,08,0.9,545.4,M,46.9,M,,*47
+ pc.printf("Length = %d \r\n",strlen(buffer)); // Length of the NMEA data sentence
+ split = strtok(buffer, ",");
+ while(split != NULL) {
+ strcpy(part1,split);
+ pc.printf(" Global Positioning System Fix Data: '%s'\r\n",part1);
+ split = strtok(NULL,",");
+
+ strcpy(part2,split);
+ pc.printf(" Fix taken at: '%s'\r\n",part2);
+ split = strtok(NULL,",");
+
+ strcpy(part3,split);
+ pc.printf(" Latitude: '%s'\r\n",part3);
+ split = strtok(NULL,",");
+
+ strcpy(part4,split);
+ pc.printf(" Direction: '%s'\r\n",part4);
+ split = strtok(NULL,",");
+
+ strcpy(part5,split);
+ pc.printf(" Longitude: '%s'\r\n",part5);
+ split = strtok(NULL,",");
+
+ strcpy(part6,split);
+ pc.printf(" Direction: '%s'\r\n",part6);
+ split = strtok(NULL,",");
+
+ strcpy(part7,split);
+ pc.printf(" Fix quality: '%s'\r\n",part7);
+ split = strtok(NULL,",");
+
+ strcpy(part8,split);
+ pc.printf(" Number of satellites being tracked: '%s'\r\n",part8);
+ split = strtok(NULL,",");
+
+ strcpy(part9,split);
+ pc.printf(" Horizontal dilution of position: '%s'\r\n",part9);
+ split = strtok(NULL,",");
+
+ strcpy(part10,split);
+ pc.printf(" Altitude, Meters: '%s'\r\n",part10);
+ split = strtok(NULL,",");
+
+ strcpy(part11,split);
+ pc.printf(" '%s'\r\n",part11);
+ split = strtok(NULL,",");
+
+ strcpy(part12,split);
+ pc.printf(" Height of geoid (mean sea level) above WGS84 ellipsoid: '%s'\r\n",part12);
+ split = strtok(NULL,",");
+
+ strcpy(part13,split);
+ pc.printf(" '%s'\r\n",part13);
+ split = strtok(NULL,",");
+
+ strcpy(part14,split);
+ pc.printf(" (empty fields): '%s'\r\n",part14);
+ split = strtok(NULL,",");
+
+ strcpy(part15,split);
+ pc.printf(" The checksum data: '%s'\r\n",part15);
+ split = strtok(NULL,",");
+
+
+ }
+ //return 0;
+ }
+
+ }
+ }
+
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