diff options
Diffstat (limited to 'src/drivers/frsky_telemetry/frsky_data.c')
| -rw-r--r-- | src/drivers/frsky_telemetry/frsky_data.c | 21 |
1 files changed, 9 insertions, 12 deletions
diff --git a/src/drivers/frsky_telemetry/frsky_data.c b/src/drivers/frsky_telemetry/frsky_data.c index 63b2d2d29..dd9b90fb3 100644 --- a/src/drivers/frsky_telemetry/frsky_data.c +++ b/src/drivers/frsky_telemetry/frsky_data.c @@ -53,6 +53,8 @@ #include <uORB/topics/vehicle_global_position.h> #include <uORB/topics/vehicle_status.h> +#include <drivers/drv_hrt.h> + /* FrSky sensor hub data IDs */ #define FRSKY_ID_GPS_ALT_BP 0x01 #define FRSKY_ID_TEMP1 0x02 @@ -192,17 +194,12 @@ void frsky_send_frame1(int uart) } /** - * Formats the decimal latitude/longitude to the required degrees/minutes/seconds. + * Formats the decimal latitude/longitude to the required degrees/minutes. */ static float frsky_format_gps(float dec) { - float dms_deg = (int) dec; - float dec_deg = dec - dms_deg; - float dms_min = (int) (dec_deg * 60); - float dec_min = (dec_deg * 60) - dms_min; - float dms_sec = dec_min * 60; - - return (dms_deg * 100.0f) + dms_min + (dms_sec / 100.0f); + float dm_deg = (int) dec; + return (dm_deg * 100.0f) + (dec - dm_deg) * 60; } /** @@ -225,16 +222,16 @@ void frsky_send_frame2(int uart) float course = 0, lat = 0, lon = 0, speed = 0, alt = 0; char lat_ns = 0, lon_ew = 0; int sec = 0; - if (global_pos.valid) { + if (global_pos.timestamp != 0 && hrt_absolute_time() < global_pos.timestamp + 20000) { time_t time_gps = global_pos.time_gps_usec / 1000000; struct tm *tm_gps = gmtime(&time_gps); course = (global_pos.yaw + M_PI_F) / M_PI_F * 180.0f; - lat = frsky_format_gps(abs(global_pos.lat) / 10000000.0f); + lat = frsky_format_gps(fabsf(global_pos.lat)); lat_ns = (global_pos.lat < 0) ? 'S' : 'N'; - lon = frsky_format_gps(abs(global_pos.lon) / 10000000.0f); + lon = frsky_format_gps(fabsf(global_pos.lon)); lon_ew = (global_pos.lon < 0) ? 'W' : 'E'; - speed = sqrtf(global_pos.vx * global_pos.vx + global_pos.vy * global_pos.vy) + speed = sqrtf(global_pos.vel_n * global_pos.vel_n + global_pos.vel_e * global_pos.vel_e) * 25.0f / 46.0f; alt = global_pos.alt; sec = tm_gps->tm_sec; |