From: Keith Packard <keithp@keithp.com>
Date: Thu, 29 Aug 2013 04:04:18 +0000 (-0600)
Subject: altos: Force u-blox to 9600 baud for now
X-Git-Tag: 1.2.9.4~123
X-Git-Url: https://git.gag.com/?p=fw%2Faltos;a=commitdiff_plain;h=4887af0bf90661a3fdca76f1797a704888edab06

altos: Force u-blox to 9600 baud for now

The Max-7 parts just aren't happy switching baud rates, managing only
about half the time. Someday I'll figure out why, but until then, make
things work by just leaving the chips at 9600 baud

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

diff --git a/src/drivers/ao_gps_ublox.c b/src/drivers/ao_gps_ublox.c
index a11ca3f7..1bc2a68f 100644
--- a/src/drivers/ao_gps_ublox.c
+++ b/src/drivers/ao_gps_ublox.c
@@ -30,21 +30,27 @@ __pdata uint16_t ao_gps_tick;
 __xdata struct ao_telemetry_location	ao_gps_data;
 __xdata struct ao_telemetry_satellite	ao_gps_tracking_data;
 
+#undef AO_SERIAL_SPEED_UBLOX
+
 #ifndef AO_SERIAL_SPEED_UBLOX
-#define AO_SERIAL_SPEED_UBLOX AO_SERIAL_SPEED_57600
+#define AO_SERIAL_SPEED_UBLOX AO_SERIAL_SPEED_9600
 #endif
 
 #if AO_SERIAL_SPEED_UBLOX == AO_SERIAL_SPEED_57600
 #define SERIAL_SPEED_STRING	"57600"
+#define SERIAL_SPEED_CHECKSUM	"2d"
 #endif
 #if AO_SERIAL_SPEED_UBLOX == AO_SERIAL_SPEED_19200
 #define SERIAL_SPEED_STRING	"19200"
+#define SERIAL_SPEED_CHECKSUM	"23"
 #endif
 #if AO_SERIAL_SPEED_UBLOX == AO_SERIAL_SPEED_9600
 #define SERIAL_SPEED_STRING	"9600"
+#define SERIAL_SPEED_CHECKSUM	"16"
 #endif
 
-static const char ao_gps_set_nmea[] = "\r\n$PUBX,41,1,3,1," SERIAL_SPEED_STRING ",0*2d\r\n";
+static const char ao_gps_set_nmea[] =
+	"\r\n$PUBX,41,1,3,1," SERIAL_SPEED_STRING ",0*" SERIAL_SPEED_CHECKSUM "\r\n";
 
 struct ao_ublox_cksum {
 	uint8_t	a, b;