diff options
| author | Keith Packard <keithp@keithp.com> | 2011-11-11 17:11:39 -0800 |
|---|---|---|
| committer | Keith Packard <keithp@keithp.com> | 2011-11-11 17:11:39 -0800 |
| commit | d3e8275572550b700563b3bde73cd7a43b608f17 (patch) | |
| tree | e5601561d5fe3ea56242302f0eb01e4e4f40e19e /src/drivers | |
| parent | 8266d8d39c0103e68ef3e476b9639574d9a48771 (diff) | |
altos: shrink Skytraq NMEA parsing more
This cuts another 78 bytes
Signed-off-by: Keith Packard <keithp@keithp.com>
Diffstat (limited to 'src/drivers')
| -rw-r--r-- | src/drivers/ao_gps_skytraq.c | 19 |
1 files changed, 9 insertions, 10 deletions
diff --git a/src/drivers/ao_gps_skytraq.c b/src/drivers/ao_gps_skytraq.c index d88ded8b..dd8d70ab 100644 --- a/src/drivers/ao_gps_skytraq.c +++ b/src/drivers/ao_gps_skytraq.c @@ -153,13 +153,15 @@ ao_gps_hex(void) static int32_t ao_gps_parse_pos(uint8_t deg_width) __reentrant { - int32_t d; - int32_t m; - int32_t f; + static __pdata uint16_t d; + static __pdata uint8_t m; + static __pdata uint16_t f; + char c; d = ao_gps_decimal(deg_width); m = ao_gps_decimal(2); - if (ao_gps_char == '.') { + c = ao_gps_char; + if (c == '.') { f = ao_gps_decimal(4); while (ao_gps_num_width < 4) { f *= 10; @@ -167,17 +169,14 @@ ao_gps_parse_pos(uint8_t deg_width) __reentrant } } else { f = 0; - if (ao_gps_char != ',') + if (c != ',') ao_gps_error = 1; } - d = d * 10000000l; - m = m * 10000l + f; - d = d + m * 50 / 3; - return d; + return d * 10000000l + (m * 10000l + f) * 50 / 3; } static uint8_t -ao_gps_parse_flag(char no_c, char yes_c) __reentrant +ao_gps_parse_flag(char no_c, char yes_c) { uint8_t ret = 0; ao_gps_skip_sep(); |