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commander: init gps eph and epv to large values, safer map projection initialization

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This commit is contained in:
Thomas Gubler 2014-05-06 11:22:18 +02:00
parent f24a6187b6
commit 596b06ff2e
1 changed files with 5 additions and 1 deletions
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6
src/modules/commander/commander.cpp
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@ -58,6 +58,7 @@
#include <string.h>
#include <math.h>
#include <poll.h>
#include <float.h>
#include <uORB/uORB.h>
#include <uORB/topics/sensor_combined.h>
@ -788,6 +789,8 @@ int commander_thread_main(int argc, char *argv[])
int gps_sub = orb_subscribe(ORB_ID(vehicle_gps_position));
struct vehicle_gps_position_s gps_position;
memset(&gps_position, 0, sizeof(gps_position));
gps_position.eph_m = FLT_MAX;
gps_position.epv_m = FLT_MAX;
/* Subscribe to sensor topic */
int sensor_sub = orb_subscribe(ORB_ID(sensor_combined));
@ -1127,7 +1130,8 @@ int commander_thread_main(int argc, char *argv[])
/* Initialize map projection if gps is valid */
if (!map_projection_global_initialized()
&& (gps_position.eph_m < eph_epv_threshold)
&& (gps_position.epv_m < eph_epv_threshold)) {
&& (gps_position.epv_m < eph_epv_threshold)
&& hrt_elapsed_time((hrt_abstime*)&gps_position.timestamp_position) < 1e6) {
/* set reference for map _projection */
map_projection_global_init((double)gps_position.lat * 1.0e-7, (double)gps_position.lon * 1.0e-7, hrt_absolute_time());