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SITL: Update SBP simulation functions for pseudo-absolute mode

This commit is contained in:
Fergus Noble 2015-03-19 12:02:39 -07:00 committed by Andrew Tridgell
parent 405862bd8f
commit 0480867de2
3 changed files with 42 additions and 83 deletions
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2
libraries/AP_HAL_AVR_SITL/SITL_State.h
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@ -91,7 +91,7 @@ private:
void _gps_nmea_printf(const char *fmt, ...);
void _update_gps_nmea(const struct gps_data *d);
void _sbp_send_message(uint16_t msg_type, uint16_t sender_id, uint8_t len, uint8_t *payload);
void _update_gps_sbp(const struct gps_data *d, bool sim_rtk);
void _update_gps_sbp(const struct gps_data *d);
void _update_gps(double latitude, double longitude, float altitude,
double speedN, double speedE, double speedD, bool have_lock);

66
libraries/AP_HAL_AVR_SITL/sitl_gps.cpp
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@ -573,7 +573,7 @@ void SITL_State::_sbp_send_message(uint16_t msg_type, uint16_t sender_id, uint8_
}
void SITL_State::_update_gps_sbp(const struct gps_data *d, bool sim_rtk)
void SITL_State::_update_gps_sbp(const struct gps_data *d)
{
struct PACKED sbp_gps_time_t {
uint16_t wn; //< GPS week number
@ -609,20 +609,11 @@ void SITL_State::_update_gps_sbp(const struct gps_data *d, bool sim_rtk)
uint16_t hdop; //< Horizontal Dilution of Precision
uint16_t vdop; //< Vertical Dilution of Precision
} dops;
struct PACKED sbp_baseline_ecef_t {
uint32_t tow; //< GPS Time of Week
int32_t x; //< Baseline ECEF X coordinate
int32_t y; //< Baseline ECEF Y coordinate
int32_t z; //< Baseline ECEF Z coordinate
uint16_t accuracy; //< Position accuracy estimate
uint8_t n_sats; //< Number of satellites used in solution
uint8_t flags; //< Status flags (reserved)
} baseline;
static const uint16_t SBP_HEARTBEAT_MSGTYPE = 0xFFFF;
static const uint16_t SBP_GPS_TIME_MSGTYPE = 0x0100;
static const uint16_t SBP_DOPS_MSGTYPE = 0x0206;
static const uint16_t SBP_POS_LLH_MSGTYPE = 0x0201;
static const uint16_t SBP_BASELINE_ECEF_MSGTYPE = 0x0202;
static const uint16_t SBP_VEL_NED_MSGTYPE = 0x0205;
uint16_t time_week;
@ -647,8 +638,13 @@ void SITL_State::_update_gps_sbp(const struct gps_data *d, bool sim_rtk)
pos.h_accuracy = 5e3;
pos.v_accuracy = 10e3;
pos.n_sats = _sitl->gps_numsats;
// Send single point position solution
pos.flags = 0;
_sbp_send_message(SBP_POS_LLH_MSGTYPE, 0x2222, sizeof(pos), (uint8_t*)&pos);
// Send "pseudo-absolute" RTK position solution
pos.flags = 1;
_sbp_send_message(SBP_POS_LLH_MSGTYPE, 0x2222, sizeof(pos), (uint8_t*)&pos);
velned.tow = time_week_ms;
velned.n = 1e3 * d->speedN;
@ -669,48 +665,16 @@ void SITL_State::_update_gps_sbp(const struct gps_data *d, bool sim_rtk)
dops.tdop = 1;
dops.hdop = 100;
dops.vdop = 1;
_sbp_send_message(SBP_DOPS_MSGTYPE, 0x2222, sizeof(dops), (uint8_t*)&dops);
_sbp_send_message(SBP_DOPS_MSGTYPE, 0x2222, sizeof(dops),
(uint8_t*)&dops);
uint32_t system_flags = 0;
_sbp_send_message(SBP_HEARTBEAT_MSGTYPE, 0x2222, sizeof(system_flags), (uint8_t*)&system_flags);
_sbp_send_message(SBP_HEARTBEAT_MSGTYPE, 0x2222,
sizeof(system_flags),
(uint8_t*)&system_flags);
}
do_every_count++;
//Also send baseline messages
if (sim_rtk && _gps_has_basestation_position) {
Vector3d homeLLH;
Vector3d currentLLH;
Vector3d homeECEF;
Vector3d currentECEF;
Vector3d baselineVector;
homeLLH[0] = _gps_basestation_data.latitude * DEG_TO_RAD_DOUBLE;
homeLLH[1] = _gps_basestation_data.longitude * DEG_TO_RAD_DOUBLE;
homeLLH[2] = _gps_basestation_data.altitude;
currentLLH[0] = d->latitude * DEG_TO_RAD_DOUBLE;
currentLLH[1] = d->longitude * DEG_TO_RAD_DOUBLE;
currentLLH[2] = d->altitude;
wgsllh2ecef(homeLLH, homeECEF);
wgsllh2ecef(currentLLH, currentECEF);
baselineVector = currentECEF - homeECEF;
baseline.tow = time_week_ms;
baseline.x = (int32_t) (baselineVector[0]*1e3); //Convert to MM
baseline.y = (int32_t) (baselineVector[1]*1e3); //Convert to MM
baseline.z = (int32_t) (baselineVector[2]*1e3); //Convert to MM
baseline.accuracy = 0;
baseline.n_sats = _sitl->gps_numsats;
baseline.flags = 1;
//printf("Sending baseline with length %f\n",baselineVector.length());
_sbp_send_message(SBP_BASELINE_ECEF_MSGTYPE, 0x2222, sizeof(baseline), (uint8_t*)&baseline);
}
}
/*
@ -813,11 +777,7 @@ void SITL_State::_update_gps(double latitude, double longitude, float altitude,
break;
case SITL::GPS_TYPE_SBP:
_update_gps_sbp(&d, false);
break;
case SITL::GPS_TYPE_SBP_RTK:
_update_gps_sbp(&d, true);
_update_gps_sbp(&d);
break;
}

1
libraries/SITL/SITL.h
View File

@ -43,7 +43,6 @@ public:
GPS_TYPE_MTK19 = 4,
GPS_TYPE_NMEA = 5,
GPS_TYPE_SBP = 6,
GPS_TYPE_SBP_RTK = 7,
};
struct sitl_fdm state;