Guido Ottaviani
A porting of a GPS decoding and presenting program within the mbos RTOS. It is not a definitive application but a study program to test NMEA full decoding library and a first approach to an RTOS. Many thanks to Andrew Levido for his support and his patience on teaching me the RTOS principles from the other side of the Earth. It uses NMEA library by Tim (xtimor@gmail.com) ported by Ken Todotani (http://mbed.org/users/todotani/) on public mbed library (http://mbed.org/users/todotani/programs/GPS_nmeaLib/5yo4h) also available, as original universal C library, on http://nmea.sourceforge.net
Dependencies: mbos Watchdog TextLCD mbed ConfigFile
nmea/context.c@3:a2f9eb3b8a16, 2012-02-03 (annotated)
- Committer:
- guiott
- Date:
- Fri Feb 03 16:29:52 2012 +0000
- Revision:
- 3:a2f9eb3b8a16
- Parent:
- 0:d177c0087d1f
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| guiott | 0:d177c0087d1f | 1 | /* |
| guiott | 0:d177c0087d1f | 2 | * |
| guiott | 0:d177c0087d1f | 3 | * NMEA library |
| guiott | 0:d177c0087d1f | 4 | * URL: http://nmea.sourceforge.net |
| guiott | 0:d177c0087d1f | 5 | * Author: Tim (xtimor@gmail.com) |
| guiott | 0:d177c0087d1f | 6 | * Licence: http://www.gnu.org/licenses/lgpl.html |
| guiott | 0:d177c0087d1f | 7 | * $Id: context.c 17 2008-03-11 11:56:11Z xtimor $ |
| guiott | 0:d177c0087d1f | 8 | * |
| guiott | 0:d177c0087d1f | 9 | */ |
| guiott | 0:d177c0087d1f | 10 | |
| guiott | 0:d177c0087d1f | 11 | #include "nmea/context.h" |
| guiott | 0:d177c0087d1f | 12 | |
| guiott | 0:d177c0087d1f | 13 | #include <string.h> |
| guiott | 0:d177c0087d1f | 14 | #include <stdarg.h> |
| guiott | 0:d177c0087d1f | 15 | #include <stdio.h> |
| guiott | 0:d177c0087d1f | 16 | |
| guiott | 0:d177c0087d1f | 17 | nmeaPROPERTY * nmea_property() |
| guiott | 0:d177c0087d1f | 18 | { |
| guiott | 0:d177c0087d1f | 19 | static nmeaPROPERTY prop = { |
| guiott | 0:d177c0087d1f | 20 | 0, 0, NMEA_DEF_PARSEBUFF |
| guiott | 0:d177c0087d1f | 21 | }; |
| guiott | 0:d177c0087d1f | 22 | |
| guiott | 0:d177c0087d1f | 23 | return ∝ |
| guiott | 0:d177c0087d1f | 24 | } |
| guiott | 0:d177c0087d1f | 25 | |
| guiott | 0:d177c0087d1f | 26 | void nmea_trace(const char *str, ...) |
| guiott | 0:d177c0087d1f | 27 | { |
| guiott | 0:d177c0087d1f | 28 | int size; |
| guiott | 0:d177c0087d1f | 29 | va_list arg_list; |
| guiott | 0:d177c0087d1f | 30 | char buff[NMEA_DEF_PARSEBUFF]; |
| guiott | 0:d177c0087d1f | 31 | nmeaTraceFunc func = nmea_property()->trace_func; |
| guiott | 0:d177c0087d1f | 32 | |
| guiott | 0:d177c0087d1f | 33 | if(func) |
| guiott | 0:d177c0087d1f | 34 | { |
| guiott | 0:d177c0087d1f | 35 | va_start(arg_list, str); |
| guiott | 0:d177c0087d1f | 36 | size = NMEA_POSIX(vsnprintf)(&buff[0], NMEA_DEF_PARSEBUFF - 1, str, arg_list); |
| guiott | 0:d177c0087d1f | 37 | va_end(arg_list); |
| guiott | 0:d177c0087d1f | 38 | |
| guiott | 0:d177c0087d1f | 39 | if(size > 0) |
| guiott | 0:d177c0087d1f | 40 | (*func)(&buff[0], size); |
| guiott | 0:d177c0087d1f | 41 | } |
| guiott | 0:d177c0087d1f | 42 | } |
| guiott | 0:d177c0087d1f | 43 | |
| guiott | 0:d177c0087d1f | 44 | void nmea_trace_buff(const char *buff, int buff_size) |
| guiott | 0:d177c0087d1f | 45 | { |
| guiott | 0:d177c0087d1f | 46 | nmeaTraceFunc func = nmea_property()->trace_func; |
| guiott | 0:d177c0087d1f | 47 | if(func && buff_size) |
| guiott | 0:d177c0087d1f | 48 | (*func)(buff, buff_size); |
| guiott | 0:d177c0087d1f | 49 | } |
| guiott | 0:d177c0087d1f | 50 | |
| guiott | 0:d177c0087d1f | 51 | void nmea_error(const char *str, ...) |
| guiott | 0:d177c0087d1f | 52 | { |
| guiott | 0:d177c0087d1f | 53 | int size; |
| guiott | 0:d177c0087d1f | 54 | va_list arg_list; |
| guiott | 0:d177c0087d1f | 55 | char buff[NMEA_DEF_PARSEBUFF]; |
| guiott | 0:d177c0087d1f | 56 | nmeaErrorFunc func = nmea_property()->error_func; |
| guiott | 0:d177c0087d1f | 57 | |
| guiott | 0:d177c0087d1f | 58 | if(func) |
| guiott | 0:d177c0087d1f | 59 | { |
| guiott | 0:d177c0087d1f | 60 | va_start(arg_list, str); |
| guiott | 0:d177c0087d1f | 61 | size = NMEA_POSIX(vsnprintf)(&buff[0], NMEA_DEF_PARSEBUFF - 1, str, arg_list); |
| guiott | 0:d177c0087d1f | 62 | va_end(arg_list); |
| guiott | 0:d177c0087d1f | 63 | |
| guiott | 0:d177c0087d1f | 64 | if(size > 0) |
| guiott | 0:d177c0087d1f | 65 | (*func)(&buff[0], size); |
| guiott | 0:d177c0087d1f | 66 | } |
| guiott | 0:d177c0087d1f | 67 | } |