__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 */
}
}
-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);
}
uint8_t i, k;
uint16_t cksum;
+ ao_gps_setup();
for (k = 0; k < 5; k++)
{
for (i = 0; i < sizeof (ao_gps_config); i++)