/* 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, either version 3 of the License, or (at your option) any later version. 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, see . */ /* support for serial connected AHRS systems */ #define ALLOW_DOUBLE_MATH_FUNCTIONS #include "AP_ExternalAHRS_config.h" #if AP_EXTERNAL_AHRS_VECTORNAV_ENABLED #include "AP_ExternalAHRS_VectorNav.h" #include #include #include #include #include #include #include #include #include #include #include #include extern const AP_HAL::HAL &hal; /* header for pre-configured 50Hz data assumes the following config for VN-300: $VNWRG,75,3,8,34,072E,0106,0612*0C 0x34: Groups 3,5,6 Group 3 (IMU): 0x072E: UncompMag UncompAccel UncompGyro Pres Mag Accel AngularRate Group 5 (Attitude): 0x0106: YawPitchRoll Quaternion YprU Group 6 (INS): 0x0612: PosLLa VelNed PosU VelU */ static const uint8_t vn_pkt1_header[] { 0x34, 0x2E, 0x07, 0x06, 0x01, 0x12, 0x06 }; #define VN_PKT1_LENGTH 170 // includes header and CRC struct PACKED VN_packet1 { float uncompMag[3]; float uncompAccel[3]; float uncompAngRate[3]; float pressure; float mag[3]; float accel[3]; float gyro[3]; float ypr[3]; float quaternion[4]; float yprU[3]; double positionLLA[3]; float velNED[3]; float posU; float velU; }; // check packet size for 4 groups static_assert(sizeof(VN_packet1)+2+3*2+2 == VN_PKT1_LENGTH, "incorrect VN_packet1 length"); /* header for pre-configured 5Hz data assumes the following VN-300 config: $VNWRG,76,3,80,4E,0002,0010,20B8,0018*63 0x4E: Groups 2,3,4,7 Group 2 (Time): 0x0002: TimeGps Group 3 (IMU): 0x0010: Temp Group 4 (GPS1): 0x20B8: NumSats Fix PosLLa VelNed DOP Group 7 (GPS2): 0x0018: NumSats Fix */ static const uint8_t vn_pkt2_header[] { 0x4e, 0x02, 0x00, 0x10, 0x00, 0xb8, 0x20, 0x18, 0x00 }; #define VN_PKT2_LENGTH 92 // includes header and CRC struct PACKED VN_packet2 { uint64_t timeGPS; float temp; uint8_t numGPS1Sats; uint8_t GPS1Fix; double GPS1posLLA[3]; float GPS1velNED[3]; float GPS1DOP[7]; uint8_t numGPS2Sats; uint8_t GPS2Fix; }; // check packet size for 4 groups static_assert(sizeof(VN_packet2)+2+4*2+2 == VN_PKT2_LENGTH, "incorrect VN_packet2 length"); /* assumes the following VN-300 config: $VNWRG,75,3,80,14,073E,0004*66 Alternate first packet for VN-100 0x14: Groups 3, 5 Group 3 (IMU): 0x073E: UncompMag UncompAccel UncompGyro Temp Pres Mag Accel Gyro Group 5 (Attitude): 0x0004: Quaternion */ static const uint8_t vn_100_pkt1_header[] { 0x14, 0x3E, 0x07, 0x04, 0x00 }; #define VN_100_PKT1_LENGTH 104 // includes header and CRC struct PACKED VN_100_packet1 { float uncompMag[3]; float uncompAccel[3]; float uncompAngRate[3]; float temp; float pressure; float mag[3]; float accel[3]; float gyro[3]; float quaternion[4]; }; static_assert(sizeof(VN_100_packet1)+2+2*2+2 == VN_100_PKT1_LENGTH, "incorrect VN_100_packet1 length"); // constructor AP_ExternalAHRS_VectorNav::AP_ExternalAHRS_VectorNav(AP_ExternalAHRS *_frontend, AP_ExternalAHRS::state_t &_state) : AP_ExternalAHRS_backend(_frontend, _state) { auto &sm = AP::serialmanager(); uart = sm.find_serial(AP_SerialManager::SerialProtocol_AHRS, 0); if (!uart) { GCS_SEND_TEXT(MAV_SEVERITY_INFO, "ExternalAHRS no UART"); return; } baudrate = sm.find_baudrate(AP_SerialManager::SerialProtocol_AHRS, 0); port_num = sm.find_portnum(AP_SerialManager::SerialProtocol_AHRS, 0); bufsize = MAX(MAX(VN_PKT1_LENGTH, VN_PKT2_LENGTH), VN_100_PKT1_LENGTH); pktbuf = new uint8_t[bufsize]; last_pkt1 = new VN_packet1; last_pkt2 = new VN_packet2; if (!pktbuf || !last_pkt1 || !last_pkt2) { AP_BoardConfig::allocation_error("ExternalAHRS"); } if (!hal.scheduler->thread_create(FUNCTOR_BIND_MEMBER(&AP_ExternalAHRS_VectorNav::update_thread, void), "AHRS", 2048, AP_HAL::Scheduler::PRIORITY_SPI, 0)) { AP_HAL::panic("Failed to start ExternalAHRS update thread"); } GCS_SEND_TEXT(MAV_SEVERITY_INFO, "ExternalAHRS initialised"); } /* check the UART for more data returns true if the function should be called again straight away */ #define SYNC_BYTE 0xFA bool AP_ExternalAHRS_VectorNav::check_uart() { if (!setup_complete) { return false; } WITH_SEMAPHORE(state.sem); uint32_t n = uart->available(); if (n == 0) { return false; } if (pktoffset < bufsize) { ssize_t nread = uart->read(&pktbuf[pktoffset], MIN(n, unsigned(bufsize-pktoffset))); if (nread <= 0) { return false; } pktoffset += nread; } bool match_header1 = false; bool match_header2 = false; bool match_header3 = false; if (pktbuf[0] != SYNC_BYTE) { goto reset; } if (type == TYPE::VN_300) { match_header1 = (0 == memcmp(&pktbuf[1], vn_pkt1_header, MIN(sizeof(vn_pkt1_header), unsigned(pktoffset-1)))); match_header2 = (0 == memcmp(&pktbuf[1], vn_pkt2_header, MIN(sizeof(vn_pkt2_header), unsigned(pktoffset-1)))); } else { match_header3 = (0 == memcmp(&pktbuf[1], vn_100_pkt1_header, MIN(sizeof(vn_100_pkt1_header), unsigned(pktoffset-1)))); } if (!match_header1 && !match_header2 && !match_header3) { goto reset; } if (match_header1 && pktoffset >= VN_PKT1_LENGTH) { uint16_t crc = crc16_ccitt(&pktbuf[1], VN_PKT1_LENGTH-1, 0); if (crc == 0) { // got pkt1 process_packet1(&pktbuf[sizeof(vn_pkt1_header)+1]); memmove(&pktbuf[0], &pktbuf[VN_PKT1_LENGTH], pktoffset-VN_PKT1_LENGTH); pktoffset -= VN_PKT1_LENGTH; } else { goto reset; } } else if (match_header2 && pktoffset >= VN_PKT2_LENGTH) { uint16_t crc = crc16_ccitt(&pktbuf[1], VN_PKT2_LENGTH-1, 0); if (crc == 0) { // got pkt2 process_packet2(&pktbuf[sizeof(vn_pkt2_header)+1]); memmove(&pktbuf[0], &pktbuf[VN_PKT2_LENGTH], pktoffset-VN_PKT2_LENGTH); pktoffset -= VN_PKT2_LENGTH; } else { goto reset; } } else if (match_header3 && pktoffset >= VN_100_PKT1_LENGTH) { uint16_t crc = crc16_ccitt(&pktbuf[1], VN_100_PKT1_LENGTH-1, 0); if (crc == 0) { // got VN-100 pkt1 process_packet_VN_100(&pktbuf[sizeof(vn_100_pkt1_header)+1]); memmove(&pktbuf[0], &pktbuf[VN_100_PKT1_LENGTH], pktoffset-VN_100_PKT1_LENGTH); pktoffset -= VN_100_PKT1_LENGTH; } else { goto reset; } } return true; reset: uint8_t *p = (uint8_t *)memchr(&pktbuf[1], SYNC_BYTE, pktoffset-1); if (p) { uint8_t newlen = pktoffset - (p - pktbuf); memmove(&pktbuf[0], p, newlen); pktoffset = newlen; } else { pktoffset = 0; } return true; } // Send command to read given register number and wait for response // Only run from thread! This blocks until a response is received #define READ_REQUEST_RETRY_MS 500 void AP_ExternalAHRS_VectorNav::wait_register_responce(const uint8_t register_num) { nmea.register_number = register_num; uint32_t request_sent = 0; while (true) { hal.scheduler->delay(1); const uint32_t now = AP_HAL::millis(); if (now - request_sent > READ_REQUEST_RETRY_MS) { // Send request to read nmea_printf(uart, "$%s%u", "VNRRG,", nmea.register_number); request_sent = now; } int16_t nbytes = uart->available(); while (nbytes-- > 0) { char c = uart->read(); if (decode(c)) { return; } } } } // add a single character to the buffer and attempt to decode // returns true if a complete sentence was successfully decoded bool AP_ExternalAHRS_VectorNav::decode(char c) { switch (c) { case ',': // end of a term, add to checksum nmea.checksum ^= c; FALLTHROUGH; case '\r': case '\n': case '*': { if (nmea.sentence_done) { return false; } if (nmea.term_is_checksum) { nmea.sentence_done = true; uint8_t checksum = 16 * char_to_hex(nmea.term[0]) + char_to_hex(nmea.term[1]); return ((checksum == nmea.checksum) && nmea.sentence_valid); } // null terminate and decode latest term nmea.term[nmea.term_offset] = 0; if (nmea.sentence_valid) { nmea.sentence_valid = decode_latest_term(); } // move onto next term nmea.term_number++; nmea.term_offset = 0; nmea.term_is_checksum = (c == '*'); return false; } case '$': // sentence begin nmea.sentence_valid = true; nmea.term_number = 0; nmea.term_offset = 0; nmea.checksum = 0; nmea.term_is_checksum = false; nmea.sentence_done = false; return false; } // ordinary characters are added to term if (nmea.term_offset < sizeof(nmea.term) - 1) { nmea.term[nmea.term_offset++] = c; } if (!nmea.term_is_checksum) { nmea.checksum ^= c; } return false; } // decode the most recently consumed term // returns true if new sentence has just passed checksum test and is validated bool AP_ExternalAHRS_VectorNav::decode_latest_term() { switch (nmea.term_number) { case 0: if (strcmp(nmea.term, "VNRRG") != 0) { return false; } break; case 1: if (nmea.register_number != strtoul(nmea.term, nullptr, 10)) { return false; } break; case 2: strncpy(model_name, nmea.term, sizeof(model_name)); break; default: return false; } return true; } void AP_ExternalAHRS_VectorNav::update_thread() { // Open port in the thread uart->begin(baudrate, 1024, 512); // Reset and wait for module to reboot // VN_100 takes 1.25 seconds //nmea_printf(uart, "$VNRST"); //hal.scheduler->delay(3000); // Stop NMEA Async Outputs (this UART only) nmea_printf(uart, "$VNWRG,6,0"); // Detect version // Read Model Number Register, ID 1 wait_register_responce(1); // Setup for messages respective model types (on both UARTs) if (strncmp(model_name, "VN-100", 6) == 0) { // VN-100 type = TYPE::VN_100; // This assumes unit is still configured at its default rate of 800hz nmea_printf(uart, "$VNWRG,75,3,%u,14,073E,0004", unsigned(800/get_rate())); } else { // Default to Setup for VN-300 series // This assumes unit is still configured at its default rate of 400hz nmea_printf(uart, "$VNWRG,75,3,%u,34,072E,0106,0612", unsigned(400/get_rate())); nmea_printf(uart, "$VNWRG,76,3,80,4E,0002,0010,20B8,0018"); } setup_complete = true; while (true) { if (!check_uart()) { hal.scheduler->delay(1); } } } const char* AP_ExternalAHRS_VectorNav::get_name() const { if (setup_complete) { return model_name; } return nullptr; } /* process packet type 1 */ void AP_ExternalAHRS_VectorNav::process_packet1(const uint8_t *b) { const struct VN_packet1 &pkt1 = *(struct VN_packet1 *)b; const struct VN_packet2 &pkt2 = *last_pkt2; last_pkt1_ms = AP_HAL::millis(); *last_pkt1 = pkt1; const bool use_uncomp = option_is_set(AP_ExternalAHRS::OPTIONS::VN_UNCOMP_IMU); { WITH_SEMAPHORE(state.sem); if (use_uncomp) { state.accel = Vector3f{pkt1.uncompAccel[0], pkt1.uncompAccel[1], pkt1.uncompAccel[2]}; state.gyro = Vector3f{pkt1.uncompAngRate[0], pkt1.uncompAngRate[1], pkt1.uncompAngRate[2]}; } else { state.accel = Vector3f{pkt1.accel[0], pkt1.accel[1], pkt1.accel[2]}; state.gyro = Vector3f{pkt1.gyro[0], pkt1.gyro[1], pkt1.gyro[2]}; } state.quat = Quaternion{pkt1.quaternion[3], pkt1.quaternion[0], pkt1.quaternion[1], pkt1.quaternion[2]}; state.have_quaternion = true; state.velocity = Vector3f{pkt1.velNED[0], pkt1.velNED[1], pkt1.velNED[2]}; state.have_velocity = true; state.location = Location{int32_t(pkt1.positionLLA[0] * 1.0e7), int32_t(pkt1.positionLLA[1] * 1.0e7), int32_t(pkt1.positionLLA[2] * 1.0e2), Location::AltFrame::ABSOLUTE}; state.have_location = true; } #if AP_BARO_EXTERNALAHRS_ENABLED { AP_ExternalAHRS::baro_data_message_t baro; baro.instance = 0; baro.pressure_pa = pkt1.pressure*1e3; baro.temperature = pkt2.temp; AP::baro().handle_external(baro); } #endif #if AP_COMPASS_EXTERNALAHRS_ENABLED { AP_ExternalAHRS::mag_data_message_t mag; mag.field = Vector3f{pkt1.mag[0], pkt1.mag[1], pkt1.mag[2]}; mag.field *= 1000; // to mGauss AP::compass().handle_external(mag); } #endif { AP_ExternalAHRS::ins_data_message_t ins; ins.accel = state.accel; ins.gyro = state.gyro; ins.temperature = pkt2.temp; AP::ins().handle_external(ins); } // @LoggerMessage: EAH1 // @Description: External AHRS data // @Field: TimeUS: Time since system startup // @Field: Roll: euler roll // @Field: Pitch: euler pitch // @Field: Yaw: euler yaw // @Field: VN: velocity north // @Field: VE: velocity east // @Field: VD: velocity down // @Field: Lat: latitude // @Field: Lon: longitude // @Field: Alt: altitude AMSL // @Field: UXY: uncertainty in XY position // @Field: UV: uncertainty in velocity // @Field: UR: uncertainty in roll // @Field: UP: uncertainty in pitch // @Field: UY: uncertainty in yaw AP::logger().WriteStreaming("EAH1", "TimeUS,Roll,Pitch,Yaw,VN,VE,VD,Lat,Lon,Alt,UXY,UV,UR,UP,UY", "sdddnnnDUmmnddd", "F000000GG000000", "QffffffLLffffff", AP_HAL::micros64(), pkt1.ypr[2], pkt1.ypr[1], pkt1.ypr[0], pkt1.velNED[0], pkt1.velNED[1], pkt1.velNED[2], int32_t(pkt1.positionLLA[0]*1.0e7), int32_t(pkt1.positionLLA[1]*1.0e7), float(pkt1.positionLLA[2]), pkt1.posU, pkt1.velU, pkt1.yprU[2], pkt1.yprU[1], pkt1.yprU[0]); } /* process packet type 2 */ void AP_ExternalAHRS_VectorNav::process_packet2(const uint8_t *b) { const struct VN_packet2 &pkt2 = *(struct VN_packet2 *)b; const struct VN_packet1 &pkt1 = *last_pkt1; last_pkt2_ms = AP_HAL::millis(); *last_pkt2 = pkt2; AP_ExternalAHRS::gps_data_message_t gps; // get ToW in milliseconds gps.gps_week = pkt2.timeGPS / (AP_MSEC_PER_WEEK * 1000000ULL); gps.ms_tow = (pkt2.timeGPS / 1000000ULL) % (60*60*24*7*1000ULL); gps.fix_type = pkt2.GPS1Fix; gps.satellites_in_view = pkt2.numGPS1Sats; gps.horizontal_pos_accuracy = pkt1.posU; gps.vertical_pos_accuracy = pkt1.posU; gps.horizontal_vel_accuracy = pkt1.velU; gps.hdop = pkt2.GPS1DOP[4]; gps.vdop = pkt2.GPS1DOP[3]; gps.latitude = pkt2.GPS1posLLA[0] * 1.0e7; gps.longitude = pkt2.GPS1posLLA[1] * 1.0e7; gps.msl_altitude = pkt2.GPS1posLLA[2] * 1.0e2; gps.ned_vel_north = pkt2.GPS1velNED[0]; gps.ned_vel_east = pkt2.GPS1velNED[1]; gps.ned_vel_down = pkt2.GPS1velNED[2]; if (gps.fix_type >= 3 && !state.have_origin) { WITH_SEMAPHORE(state.sem); state.origin = Location{int32_t(pkt2.GPS1posLLA[0] * 1.0e7), int32_t(pkt2.GPS1posLLA[1] * 1.0e7), int32_t(pkt2.GPS1posLLA[2] * 1.0e2), Location::AltFrame::ABSOLUTE}; state.have_origin = true; } uint8_t instance; if (AP::gps().get_first_external_instance(instance)) { AP::gps().handle_external(gps, instance); } } /* process VN-100 packet type 1 */ void AP_ExternalAHRS_VectorNav::process_packet_VN_100(const uint8_t *b) { const struct VN_100_packet1 &pkt = *(struct VN_100_packet1 *)b; last_pkt1_ms = AP_HAL::millis(); const bool use_uncomp = option_is_set(AP_ExternalAHRS::OPTIONS::VN_UNCOMP_IMU); { WITH_SEMAPHORE(state.sem); if (use_uncomp) { state.accel = Vector3f{pkt.uncompAccel[0], pkt.uncompAccel[1], pkt.uncompAccel[2]}; state.gyro = Vector3f{pkt.uncompAngRate[0], pkt.uncompAngRate[1], pkt.uncompAngRate[2]}; } else { state.accel = Vector3f{pkt.accel[0], pkt.accel[1], pkt.accel[2]}; state.gyro = Vector3f{pkt.gyro[0], pkt.gyro[1], pkt.gyro[2]}; } state.quat = Quaternion{pkt.quaternion[3], pkt.quaternion[0], pkt.quaternion[1], pkt.quaternion[2]}; state.have_quaternion = true; } #if AP_BARO_EXTERNALAHRS_ENABLED { AP_ExternalAHRS::baro_data_message_t baro; baro.instance = 0; baro.pressure_pa = pkt.pressure*1e3; baro.temperature = pkt.temp; AP::baro().handle_external(baro); } #endif #if AP_COMPASS_EXTERNALAHRS_ENABLED { AP_ExternalAHRS::mag_data_message_t mag; if (use_uncomp) { mag.field = Vector3f{pkt.uncompMag[0], pkt.uncompMag[1], pkt.uncompMag[2]}; } else { mag.field = Vector3f{pkt.mag[0], pkt.mag[1], pkt.mag[2]}; } mag.field *= 1000; // to mGauss AP::compass().handle_external(mag); } #endif { AP_ExternalAHRS::ins_data_message_t ins; ins.accel = state.accel; ins.gyro = state.gyro; ins.temperature = pkt.temp; AP::ins().handle_external(ins); } // @LoggerMessage: EAH3 // @Description: External AHRS data // @Field: TimeUS: Time since system startup // @Field: Temp: Temprature // @Field: Pres: Pressure // @Field: MX: Magnetic feild X-axis // @Field: MY: Magnetic feild Y-axis // @Field: MZ: Magnetic feild Z-axis // @Field: AX: Acceleration X-axis // @Field: AY: Acceleration Y-axis // @Field: AZ: Acceleration Z-axis // @Field: GX: Rotation rate X-axis // @Field: GY: Rotation rate Y-axis // @Field: GZ: Rotation rate Z-axis // @Field: Q1: Attitude quaternion 1 // @Field: Q2: Attitude quaternion 2 // @Field: Q3: Attitude quaternion 3 // @Field: Q4: Attitude quaternion 4 AP::logger().WriteStreaming("EAH3", "TimeUS,Temp,Pres,MX,MY,MZ,AX,AY,AZ,GX,GY,GZ,Q1,Q2,Q3,Q4", "sdPGGGoooEEE----", "F000000000000000", "Qfffffffffffffff", AP_HAL::micros64(), pkt.temp, pkt.pressure*1e3, use_uncomp ? pkt.uncompMag[0] : pkt.mag[0], use_uncomp ? pkt.uncompMag[1] : pkt.mag[1], use_uncomp ? pkt.uncompMag[2] : pkt.mag[2], state.accel[0], state.accel[1], state.accel[2], state.gyro[0], state.gyro[1], state.gyro[2], state.quat[0], state.quat[1], state.quat[2], state.quat[3]); } // get serial port number for the uart int8_t AP_ExternalAHRS_VectorNav::get_port(void) const { if (!uart) { return -1; } return port_num; }; // accessors for AP_AHRS bool AP_ExternalAHRS_VectorNav::healthy(void) const { const uint32_t now = AP_HAL::millis(); if (type == TYPE::VN_100) { return (now - last_pkt1_ms < 40); } return (now - last_pkt1_ms < 40 && now - last_pkt2_ms < 500); } bool AP_ExternalAHRS_VectorNav::initialised(void) const { if (!setup_complete) { return false; } if (type == TYPE::VN_100) { return last_pkt1_ms != 0; } return last_pkt1_ms != 0 && last_pkt2_ms != 0; } bool AP_ExternalAHRS_VectorNav::pre_arm_check(char *failure_msg, uint8_t failure_msg_len) const { if (!setup_complete) { hal.util->snprintf(failure_msg, failure_msg_len, "VectorNav setup failed"); return false; } if (!healthy()) { hal.util->snprintf(failure_msg, failure_msg_len, "VectorNav unhealthy"); return false; } if (type == TYPE::VN_300) { if (last_pkt2->GPS1Fix < 3) { hal.util->snprintf(failure_msg, failure_msg_len, "VectorNav no GPS1 lock"); return false; } if (last_pkt2->GPS2Fix < 3) { hal.util->snprintf(failure_msg, failure_msg_len, "VectorNav no GPS2 lock"); return false; } } return true; } /* get filter status. We don't know the meaning of the status bits yet, so assume all OK if we have GPS lock */ void AP_ExternalAHRS_VectorNav::get_filter_status(nav_filter_status &status) const { memset(&status, 0, sizeof(status)); if (type == TYPE::VN_300) { if (last_pkt1 && last_pkt2) { status.flags.initalized = 1; } if (healthy() && last_pkt2) { status.flags.attitude = 1; status.flags.vert_vel = 1; status.flags.vert_pos = 1; const struct VN_packet2 &pkt2 = *last_pkt2; if (pkt2.GPS1Fix >= 3) { status.flags.horiz_vel = 1; status.flags.horiz_pos_rel = 1; status.flags.horiz_pos_abs = 1; status.flags.pred_horiz_pos_rel = 1; status.flags.pred_horiz_pos_abs = 1; status.flags.using_gps = 1; } } } else { status.flags.initalized = initialised(); if (healthy()) { status.flags.attitude = true; } } } // send an EKF_STATUS message to GCS void AP_ExternalAHRS_VectorNav::send_status_report(GCS_MAVLINK &link) const { if (!last_pkt1) { return; } // prepare flags uint16_t flags = 0; nav_filter_status filterStatus; get_filter_status(filterStatus); if (filterStatus.flags.attitude) { flags |= EKF_ATTITUDE; } if (filterStatus.flags.horiz_vel) { flags |= EKF_VELOCITY_HORIZ; } if (filterStatus.flags.vert_vel) { flags |= EKF_VELOCITY_VERT; } if (filterStatus.flags.horiz_pos_rel) { flags |= EKF_POS_HORIZ_REL; } if (filterStatus.flags.horiz_pos_abs) { flags |= EKF_POS_HORIZ_ABS; } if (filterStatus.flags.vert_pos) { flags |= EKF_POS_VERT_ABS; } if (filterStatus.flags.terrain_alt) { flags |= EKF_POS_VERT_AGL; } if (filterStatus.flags.const_pos_mode) { flags |= EKF_CONST_POS_MODE; } if (filterStatus.flags.pred_horiz_pos_rel) { flags |= EKF_PRED_POS_HORIZ_REL; } if (filterStatus.flags.pred_horiz_pos_abs) { flags |= EKF_PRED_POS_HORIZ_ABS; } if (!filterStatus.flags.initalized) { flags |= EKF_UNINITIALIZED; } // send message const struct VN_packet1 &pkt1 = *(struct VN_packet1 *)last_pkt1; const float vel_gate = 5; const float pos_gate = 5; const float hgt_gate = 5; const float mag_var = 0; mavlink_msg_ekf_status_report_send(link.get_chan(), flags, pkt1.velU/vel_gate, pkt1.posU/pos_gate, pkt1.posU/hgt_gate, mag_var, 0, 0); } #endif // AP_EXTERNAL_AHRS_VECTORNAV_ENABLED