Ashtech GPS driver
Merge branch 'master' into ashtech
Increased ashtech POS frequency and increased baudrate
Fixed km/h -> knots in POS
Merge branch 'ashtech' into ashtech_hi_freq
PASHS,POP,20 is needed for 20Hz configuration
Merge branch 'master' into ashtech_hi_freq
Corrected gps_fix values description
Code style fix
More code style fixes
Removed VTG message parsing
Non-ascii characters cleanup
Multiple fixes:
- Fixed boad - board typo
- Ashtech initialization string is const char* now
- Using standard M_PI constant instead of locally defined one
- Removed float32_t and float64_t in favor of standard float and double
Got rid of str_scanDec and scanFloat64.
 - Replaced str_scanDec and scanFloat64 with strtol and strtod.
 - Added __attribute__ ((unused)) to yet unused variables
 - Added initialization for a few variables
Merge pull request #1381 from dyeldandi/ashtech_hi_freq

Ashtech GNSS receiver driver