From: Keith Packard <keithp@keithp.com>
Date: Sat, 12 Nov 2011 01:11:39 +0000 (-0800)
Subject: altos: shrink Skytraq NMEA parsing more
X-Git-Tag: 1.0.9.4~89
X-Git-Url: https://git.gag.com/?p=fw%2Faltos;a=commitdiff_plain;h=d3e8275572550b700563b3bde73cd7a43b608f17

altos: shrink Skytraq NMEA parsing more

This cuts another 78 bytes

Signed-off-by: Keith Packard <keithp@keithp.com>
---

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();