Adafruit GPS , distance and count footsteps
Dependencies: mbed SDFileSystem MBed_Adafruit-GPS-Library USBDevice
Diff: main.cpp
- Revision:
- 2:7166ad3f9a2a
- Parent:
- 1:b100ab44119d
- Child:
- 3:e38a115af1dd
diff -r b100ab44119d -r 7166ad3f9a2a main.cpp --- a/main.cpp Thu Dec 22 05:52:09 2016 +0000 +++ b/main.cpp Thu Dec 22 05:55:53 2016 +0000 @@ -1,3 +1,70 @@ +//gps.cpp +//for use with Adafruit Ultimate GPS +//Reads in and parses GPS data + +#include "mbed.h" +#include "MBed_Adafruit_GPS.h" + +Serial * gps_Serial; +Serial pc (USBTX, USBRX); + +int main() { + + pc.baud(115200); //sets virtual COM serial communication to high rate; this is to allow more time to be spent on GPS retrieval + + gps_Serial = new Serial(PTC17,PTC16); //serial object for use w/ GPS + Adafruit_GPS myGPS(gps_Serial); //object of Adafruit's GPS class + char c; //when read via Adafruit_GPS::read(), the class returns single character stored here + Timer refresh_Timer; //sets up a timer for use in loop; how often do we print GPS info? + const int refresh_Time = 2000; //refresh time in ms + + myGPS.begin(9600); //sets baud rate for GPS communication; note this may be changed via Adafruit_GPS::sendCommand(char *) + //a list of GPS commands is available at http://www.adafruit.com/datasheets/PMTK_A08.pdf + + myGPS.sendCommand(PMTK_SET_NMEA_OUTPUT_RMCGGA); //these commands are defined in MBed_Adafruit_GPS.h; a link is provided there for command creation + myGPS.sendCommand(PMTK_SET_NMEA_UPDATE_1HZ); + myGPS.sendCommand(PGCMD_ANTENNA); + + pc.printf("Connection established at 115200 baud...\n"); + + wait(1); + + refresh_Timer.start(); //starts the clock on the timer + + while(true){ + c = myGPS.read(); //queries the GPS + + if (c) { pc.printf("%c", c); } //this line will echo the GPS data if not paused + + //check if we recieved a new message from GPS, if so, attempt to parse it, + if ( myGPS.newNMEAreceived() ) { + if ( !myGPS.parse(myGPS.lastNMEA()) ) { + continue; + } + } + + //check if enough time has passed to warrant printing GPS info to screen + //note if refresh_Time is too low or pc.baud is too low, GPS data may be lost during printing + if (refresh_Timer.read_ms() >= refresh_Time) { + refresh_Timer.reset(); + pc.printf("Time: %d:%d:%d.%u\n", myGPS.hour, myGPS.minute, myGPS.seconds, myGPS.milliseconds); + pc.printf("Date: %d/%d/20%d\n", myGPS.day, myGPS.month, myGPS.year); + pc.printf("Fix: %d\n", (int) myGPS.fix); + pc.printf("Quality: %d\n", (int) myGPS.fixquality); + if (myGPS.fix) { + pc.printf("Location: %5.2f%c, %5.2f%c\n", myGPS.latitude, myGPS.lat, myGPS.longitude, myGPS.lon); + pc.printf("Speed: %5.2f knots\n", myGPS.speed); + pc.printf("Angle: %5.2f\n", myGPS.angle); + pc.printf("Altitude: %5.2f\n", myGPS.altitude); + pc.printf("Satellites: %d\n", myGPS.satellites); + } + } + } +} + + +/* + //gps.cpp //for use with Adafruit Ultimate GPS //Reads in and parses GPS data @@ -61,6 +128,9 @@ } } } +/* + + /*