Reset GPS at boot time

[fw/altos] / src / ao_gps.c

diff --git a/src/ao_gps.c b/src/ao_gps.c
index 1ce738b1f7bf1421b4a68c8a47604ff0d8371620..c06c635fd9fc3d67bf560671cca0572fbde8e974 100644 (file)
--- a/src/ao_gps.c
+++ b/src/ao_gps.c
@@ -22,9 +22,27 @@
 __xdata uint8_t ao_gps_mutex;
 __xdata struct ao_gps_data     ao_gps_data;
 
+#undef AO_GPS_4800
+
+#ifdef AO_GPS_4800
 static const char ao_gps_set_nmea[] = "$PSRF100,0,57600,8,1,0*37\r\n";
+#else
+static const char ao_gps_set_nmea[] = "$PSRF100,0,4800,8,1,0*0F\r\n";
+#endif
 
 const char ao_gps_config[] = {
+       0xa0, 0xa2, 0x00, 0x19, /* length: 25 bytes */
+       128,                    /* Initialize Data Source */
+       0, 0, 0, 0,             /* ECEF X */
+       0, 0, 0, 0,             /* ECEF Y */
+       0, 0, 0, 0,             /* ECEF Z */
+       0, 0, 0, 0,             /* Clock Drift */
+       0, 0, 0, 0,             /* Time of Week */
+       0, 0,                   /* Week Number */
+       0,                      /* Channels */
+       0xc6,                   /* Clear user data, RTC not accurate, Clear history, clear ephemeris */
+       0x01, 0x46, 0xb0, 0xb3,
+
        0xa0, 0xa2, 0x00, 0x0e, /* length: 14 bytes */
        136,                    /* mode control */
        0, 0,                   /* reserved */
@@ -224,17 +242,22 @@ ao_sirf_parse_41(void)
        }
 }
 
-void
+static void
 ao_gps_setup(void) __reentrant
 {
-       uint8_t i;
+       uint8_t i, k;
+#ifdef AO_GPS_4800
        ao_serial_set_speed(AO_SERIAL_SPEED_4800);
-       for (i = 0; i < 16; i++)
+#endif
+       for (i = 0; i < 64; i++)
                ao_serial_putchar(0x00);
-       for (i = 0; i < sizeof (ao_gps_set_nmea) - 1; i++)
-               ao_serial_putchar(ao_gps_set_nmea[i]);
+       for (k = 0; k < 3; k++)
+               for (i = 0; i < sizeof (ao_gps_set_nmea); i++)
+                       ao_serial_putchar(ao_gps_set_nmea[i]);
+#ifdef AO_GPS_4800
        ao_serial_set_speed(AO_SERIAL_SPEED_57600);
-       for (i = 0; i < 16; i++)
+#endif
+       for (i = 0; i < 64; i++)
                ao_serial_putchar(0x00);
 }