altos: Add TeleGPS logging format

This is mostly like the mega format, but places the flight state in a
spare byte of the GPS data and writes the gps starting location to the
flight packet.

Log data is written by the main tracker thread; there's no reason for
a separate thread given the GPS update rate and the lack of flight
controls. This means ao_log_gps has an API to be called from there,
rather than a thread to run.

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

1 files changed, 32 insertions, 0 deletions

diff --git a/src/kernel/ao_log_gps.h b/src/kernel/ao_log_gps.h
new file mode 100644
index 00000000..733db19b
--- /dev/null
+++ b/src/kernel/ao_log_gps.h
@@ -0,0 +1,32 @@
+/*
+ * Copyright © 2014 Keith Packard <keithp@keithp.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+#include "ao.h"
+#include "ao_telemetry.h"
+
+uint8_t
+ao_log_gps_should_log(int32_t lat, int32_t lon, int16_t alt);
+
+void
+ao_log_gps_flight(void);
+
+void
+ao_log_gps_data(uint16_t tick, uint8_t state, struct ao_telemetry_location *gps_data);
+
+void
+ao_log_gps_tracking(uint16_t tick, struct ao_telemetry_satellite *gps_tracking_data);
+