christian b / GPS

Mbed library to handle GPS data reception and parsing

Dependents:   GPS_U-blox_NEO-6M_Code

Features

  • All positionning parameters are contained into a global data structure.
  • Automatic nema string parsing and data structure update.
    • GSA,GGA,VTG and RMC
  • Convert latitude and longitude to decimal value.
  • Converts latittude,longitude and altitude to ECEF coordinates.

Planed developement

  • Test library for RTOS use.
  • Complete the nema parsing decoders (couple of parameters are not parsed yet and not present in the data structure).
  • Add conversion tool to get ENU coordinates.

Decoders/DecodersUtils.h@3:20f8faf2ad18, 2016-02-15 (annotated)

Committer:
chris215
Date:
Mon Feb 15 00:42:32 2016 +0000
Revision:
3:20f8faf2ad18
Code refactor. Replace usage of strtok_r() with a custom version to fix parsing issues when the token is empty.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
chris215 3:20f8faf2ad18 1 #ifndef _DECODERSUTILS_H_
chris215 3:20f8faf2ad18 2 #define _DECODERSUTILS_H_
chris215 3:20f8faf2ad18 3
chris215 3:20f8faf2ad18 4 #include "mbed.h"
chris215 3:20f8faf2ad18 5
chris215 3:20f8faf2ad18 6 char * strtok_single(char * str, char const * delims)
chris215 3:20f8faf2ad18 7 {
chris215 3:20f8faf2ad18 8 static char * src = NULL;
chris215 3:20f8faf2ad18 9 char * p, * ret = 0;
chris215 3:20f8faf2ad18 10
chris215 3:20f8faf2ad18 11 if (str != NULL)
chris215 3:20f8faf2ad18 12 src = str;
chris215 3:20f8faf2ad18 13
chris215 3:20f8faf2ad18 14 if (src == NULL)
chris215 3:20f8faf2ad18 15 return NULL;
chris215 3:20f8faf2ad18 16
chris215 3:20f8faf2ad18 17 if ((p = strpbrk (src, delims)) != NULL) {
chris215 3:20f8faf2ad18 18 *p = 0;
chris215 3:20f8faf2ad18 19 ret = src;
chris215 3:20f8faf2ad18 20 src = ++p;
chris215 3:20f8faf2ad18 21
chris215 3:20f8faf2ad18 22 } else if (*src) {
chris215 3:20f8faf2ad18 23 ret = src;
chris215 3:20f8faf2ad18 24 src = NULL;
chris215 3:20f8faf2ad18 25 }
chris215 3:20f8faf2ad18 26
chris215 3:20f8faf2ad18 27 return ret;
chris215 3:20f8faf2ad18 28 }
chris215 3:20f8faf2ad18 29 #endif