// -*- tab-width: 4; Mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*- /* 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 . */ #include #include #include #include #include "AP_GPS.h" extern const AP_HAL::HAL& hal; // table of user settable parameters const AP_Param::GroupInfo AP_GPS::var_info[] PROGMEM = { // @Param: TYPE // @DisplayName: GPS type // @Description: GPS type // @Values: 0:None,1:AUTO,2:uBlox,3:MTK,4:MTK19,5:NMEA,6:SiRF,7:HIL,8:SwiftNav,9:PX4-UAVCAN,10:SBF,11:GSOF // @RebootRequired: True AP_GROUPINFO("TYPE", 0, AP_GPS, _type[0], 1), #if GPS_MAX_INSTANCES > 1 // @Param: TYPE2 // @DisplayName: 2nd GPS type // @Description: GPS type of 2nd GPS // @Values: 0:None,1:AUTO,2:uBlox,3:MTK,4:MTK19,5:NMEA,6:SiRF,7:HIL,8:SwiftNav,9:PX4-UAVCAN,10:SBF,11:GSOF // @RebootRequired: True AP_GROUPINFO("TYPE2", 1, AP_GPS, _type[1], 0), #endif // @Param: NAVFILTER // @DisplayName: Navigation filter setting // @Description: Navigation filter engine setting // @Values: 0:Portable,2:Stationary,3:Pedestrian,4:Automotive,5:Sea,6:Airborne1G,7:Airborne2G,8:Airborne4G // @RebootRequired: True AP_GROUPINFO("NAVFILTER", 2, AP_GPS, _navfilter, GPS_ENGINE_AIRBORNE_4G), #if GPS_MAX_INSTANCES > 1 // @Param: AUTO_SWITCH // @DisplayName: Automatic Switchover Setting // @Description: Automatic switchover to GPS reporting best lock // @Values: 0:Disabled,1:Enabled // @User: Advanced AP_GROUPINFO("AUTO_SWITCH", 3, AP_GPS, _auto_switch, 1), #endif #if GPS_RTK_AVAILABLE // @Param: MIN_DGPS // @DisplayName: Minimum Lock Type Accepted for DGPS // @Description: Sets the minimum type of differential GPS corrections required before allowing to switch into DGPS mode. // @Values: 0:Any,50:FloatRTK,100:IntegerRTK // @User: Advanced // @RebootRequired: True AP_GROUPINFO("MIN_DGPS", 4, AP_GPS, _min_dgps, 100), #endif // @Param: SBAS_MODE // @DisplayName: SBAS Mode // @Description: This sets the SBAS (satellite based augmentation system) mode if available on this GPS. If set to 2 then the SBAS mode is not changed in the GPS. Otherwise the GPS will be reconfigured to enable/disable SBAS. Disabling SBAS may be worthwhile in some parts of the world where an SBAS signal is available but the baseline is too long to be useful. // @Values: 0:Disabled,1:Enabled,2:NoChange // @User: Advanced // @RebootRequired: True AP_GROUPINFO("SBAS_MODE", 5, AP_GPS, _sbas_mode, 2), // @Param: MIN_ELEV // @DisplayName: Minimum elevation // @Description: This sets the minimum elevation of satellites above the horizon for them to be used for navigation. Setting this to -100 leaves the minimum elevation set to the GPS modules default. // @Range: -100 90 // @Units: Degrees // @User: Advanced // @RebootRequired: True AP_GROUPINFO("MIN_ELEV", 6, AP_GPS, _min_elevation, -100), #if GPS_MAX_INSTANCES > 1 // @Param: INJECT_TO // @DisplayName: Destination for GPS_INJECT_DATA MAVLink packets // @Description: The GGS can send raw serial packets to inject data to multiple GPSes. // @Values: 0:send to first GPS, 1:send to 2nd GPS, 127:send to all AP_GROUPINFO("INJECT_TO", 7, AP_GPS, _inject_to, GPS_RTK_INJECT_TO_ALL), #endif #if GPS_RTK_AVAILABLE // @Param: SBP_LOGMASK // @DisplayName: Swift Binary Protocol Logging Mask // @Description: Masked with the SBP msg_type field to determine whether SBR1/SBR2 data is logged // @Values: 0x0000:None, 0xFFFF:All, 0xFF00:External only // @User: Advanced AP_GROUPINFO("SBP_LOGMASK", 8, AP_GPS, _sbp_logmask, 0xFF00), #endif #if GPS_RTK_AVAILABLE // @Param: RAW_DATA // @DisplayName: Raw data logging // @Description: Enable logging of RXM raw data from uBlox which includes carrier phase and pseudo range information. This allows for post processing of dataflash logs for more precise positioning. Note that this requires a raw capable uBlox such as the 6P or 6T. // @Values: 0:Disabled,1:log at 1MHz,5:log at 5MHz // @RebootRequired: True AP_GROUPINFO("RAW_DATA", 9, AP_GPS, _raw_data, 0), #endif // @Param: GNSS_MODE // @DisplayName: GNSS system configuration // @Description: Bitmask for what GNSS system to use (all unchecked or zero to leave GPS as configured) // @Values: 0:Leave as currently configured, 1:GPS-NoSBAS, 3:GPS+SBAS, 4:Galileo-NoSBAS, 6:Galileo+SBAS, 8:Beidou, 51:GPS+IMES+QZSS+SBAS (Japan Only), 64:GLONASS, 66:GLONASS+SBAS, 67:GPS+GLONASS+SBAS // @Bitmask: 0:GPS, 1:SBAS, 2:Galileo, 3:Beidou, 4:IMES, 5:QZSS, 6:GLOSNASS // @User: Advanced // @RebootRequired: True AP_GROUPINFO("GNSS_MODE", 10, AP_GPS, _gnss_mode, 0), AP_GROUPEND }; /// Startup initialisation. void AP_GPS::init(DataFlash_Class *dataflash, const AP_SerialManager& serial_manager) { _DataFlash = dataflash; primary_instance = 0; // search for serial ports with gps protocol _port[0] = serial_manager.find_serial(AP_SerialManager::SerialProtocol_GPS, 0); #if GPS_MAX_INSTANCES > 1 _port[1] = serial_manager.find_serial(AP_SerialManager::SerialProtocol_GPS, 1); _last_instance_swap_ms = 0; #endif } // baudrates to try to detect GPSes with const uint32_t AP_GPS::_baudrates[] PROGMEM = {4800U, 38400U, 115200U, 57600U, 9600U, 230400U}; // initialisation blobs to send to the GPS to try to get it into the // right mode const prog_char AP_GPS::_initialisation_blob[] PROGMEM = UBLOX_SET_BINARY MTK_SET_BINARY SIRF_SET_BINARY; const prog_char AP_GPS::_initialisation_raw_blob[] PROGMEM = UBLOX_SET_BINARY_RAW_BAUD MTK_SET_BINARY SIRF_SET_BINARY; /* send some more initialisation string bytes if there is room in the UART transmit buffer */ void AP_GPS::send_blob_start(uint8_t instance, const prog_char *_blob, uint16_t size) { initblob_state[instance].blob = _blob; initblob_state[instance].remaining = size; } /* send some more initialisation string bytes if there is room in the UART transmit buffer */ void AP_GPS::send_blob_update(uint8_t instance) { // exit immediately if no uart for this instance if (_port[instance] == NULL) { return; } // see if we can write some more of the initialisation blob if (initblob_state[instance].remaining > 0) { int16_t space = _port[instance]->txspace(); if (space > (int16_t)initblob_state[instance].remaining) { space = initblob_state[instance].remaining; } while (space > 0) { _port[instance]->write(pgm_read_byte(initblob_state[instance].blob)); initblob_state[instance].blob++; space--; initblob_state[instance].remaining--; } } } /* run detection step for one GPS instance. If this finds a GPS then it will fill in drivers[instance] and change state[instance].status from NO_GPS to NO_FIX. */ void AP_GPS::detect_instance(uint8_t instance) { AP_GPS_Backend *new_gps = NULL; struct detect_state *dstate = &detect_state[instance]; uint32_t now = hal.scheduler->millis(); #if CONFIG_HAL_BOARD == HAL_BOARD_PX4 if (_type[instance] == GPS_TYPE_PX4) { // check for explicitely chosen PX4 GPS beforehand // it is not possible to autodetect it, nor does it require a real UART hal.console->print_P(PSTR(" PX4 ")); new_gps = new AP_GPS_PX4(*this, state[instance], _port[instance]); goto found_gps; } #endif if (_port[instance] == NULL) { // UART not available return; } state[instance].instance = instance; state[instance].status = NO_GPS; state[instance].hdop = 9999; #if GPS_RTK_AVAILABLE // by default the sbf/trimble gps outputs no data on its port, until configured. if (_type[instance] == GPS_TYPE_SBF) { hal.console->print_P(PSTR(" SBF ")); new_gps = new AP_GPS_SBF(*this, state[instance], _port[instance]); } else if ((_type[instance] == GPS_TYPE_GSOF)) { hal.console->print_P(PSTR(" GSOF ")); new_gps = new AP_GPS_GSOF(*this, state[instance], _port[instance]); } #endif // GPS_RTK_AVAILABLE // record the time when we started detection. This is used to try // to avoid initialising a uBlox as a NMEA GPS if (dstate->detect_started_ms == 0) { dstate->detect_started_ms = now; } if (now - dstate->last_baud_change_ms > GPS_BAUD_TIME_MS) { // try the next baud rate dstate->last_baud++; if (dstate->last_baud == ARRAY_SIZE(_baudrates)) { dstate->last_baud = 0; } uint32_t baudrate = pgm_read_dword(&_baudrates[dstate->last_baud]); _port[instance]->begin(baudrate); _port[instance]->set_flow_control(AP_HAL::UARTDriver::FLOW_CONTROL_DISABLE); dstate->last_baud_change_ms = now; #if UBLOX_RXM_RAW_LOGGING if(_raw_data != 0) send_blob_start(instance, _initialisation_raw_blob, sizeof(_initialisation_raw_blob)); else #endif send_blob_start(instance, _initialisation_blob, sizeof(_initialisation_blob)); } send_blob_update(instance); while (initblob_state[instance].remaining == 0 && _port[instance]->available() > 0 && new_gps == NULL) { uint8_t data = _port[instance]->read(); /* running a uBlox at less than 38400 will lead to packet corruption, as we can't receive the packets in the 200ms window for 5Hz fixes. The NMEA startup message should force the uBlox into 38400 no matter what rate it is configured for. */ if ((_type[instance] == GPS_TYPE_AUTO || _type[instance] == GPS_TYPE_UBLOX) && pgm_read_dword(&_baudrates[dstate->last_baud]) >= 38400 && AP_GPS_UBLOX::_detect(dstate->ublox_detect_state, data)) { hal.console->print_P(PSTR(" ublox ")); new_gps = new AP_GPS_UBLOX(*this, state[instance], _port[instance]); } else if ((_type[instance] == GPS_TYPE_AUTO || _type[instance] == GPS_TYPE_MTK19) && AP_GPS_MTK19::_detect(dstate->mtk19_detect_state, data)) { hal.console->print_P(PSTR(" MTK19 ")); new_gps = new AP_GPS_MTK19(*this, state[instance], _port[instance]); } else if ((_type[instance] == GPS_TYPE_AUTO || _type[instance] == GPS_TYPE_MTK) && AP_GPS_MTK::_detect(dstate->mtk_detect_state, data)) { hal.console->print_P(PSTR(" MTK ")); new_gps = new AP_GPS_MTK(*this, state[instance], _port[instance]); } #if GPS_RTK_AVAILABLE else if ((_type[instance] == GPS_TYPE_AUTO || _type[instance] == GPS_TYPE_SBP) && AP_GPS_SBP::_detect(dstate->sbp_detect_state, data)) { hal.console->print_P(PSTR(" SBP ")); new_gps = new AP_GPS_SBP(*this, state[instance], _port[instance]); } #endif // HAL_CPU_CLASS #if !defined(GPS_SKIP_SIRF_NMEA) // save a bit of code space on a 1280 else if ((_type[instance] == GPS_TYPE_AUTO || _type[instance] == GPS_TYPE_SIRF) && AP_GPS_SIRF::_detect(dstate->sirf_detect_state, data)) { hal.console->print_P(PSTR(" SIRF ")); new_gps = new AP_GPS_SIRF(*this, state[instance], _port[instance]); } else if (now - dstate->detect_started_ms > (ARRAY_SIZE(_baudrates) * GPS_BAUD_TIME_MS)) { // prevent false detection of NMEA mode in // a MTK or UBLOX which has booted in NMEA mode if ((_type[instance] == GPS_TYPE_AUTO || _type[instance] == GPS_TYPE_NMEA) && AP_GPS_NMEA::_detect(dstate->nmea_detect_state, data)) { hal.console->print_P(PSTR(" NMEA ")); new_gps = new AP_GPS_NMEA(*this, state[instance], _port[instance]); } } #endif } #if CONFIG_HAL_BOARD == HAL_BOARD_PX4 found_gps: #endif if (new_gps != NULL) { state[instance].status = NO_FIX; drivers[instance] = new_gps; timing[instance].last_message_time_ms = now; } } AP_GPS::GPS_Status AP_GPS::highest_supported_status(uint8_t instance) const { #if GPS_RTK_AVAILABLE if (drivers[instance] != NULL) return drivers[instance]->highest_supported_status(); #endif return AP_GPS::GPS_OK_FIX_3D; } AP_GPS::GPS_Status AP_GPS::highest_supported_status(void) const { #if GPS_RTK_AVAILABLE if (drivers[primary_instance] != NULL) return drivers[primary_instance]->highest_supported_status(); #endif return AP_GPS::GPS_OK_FIX_3D; } /* update one GPS instance. This should be called at 10Hz or greater */ void AP_GPS::update_instance(uint8_t instance) { if (_type[instance] == GPS_TYPE_HIL) { // in HIL, leave info alone return; } if (_type[instance] == GPS_TYPE_NONE) { // not enabled state[instance].status = NO_GPS; state[instance].hdop = 9999; return; } if (locked_ports & (1U<read(); uint32_t tnow = hal.scheduler->millis(); // if we did not get a message, and the idle timer of 1.2 seconds // has expired, re-initialise the GPS. This will cause GPS // detection to run again if (!result) { if (tnow - timing[instance].last_message_time_ms > 1200) { // free the driver before we run the next detection, so we // don't end up with two allocated at any time delete drivers[instance]; drivers[instance] = NULL; memset(&state[instance], 0, sizeof(state[instance])); state[instance].instance = instance; state[instance].status = NO_GPS; state[instance].hdop = 9999; timing[instance].last_message_time_ms = tnow; } } else { timing[instance].last_message_time_ms = tnow; if (state[instance].status >= GPS_OK_FIX_2D) { timing[instance].last_fix_time_ms = tnow; } } } /* update all GPS instances */ void AP_GPS::update(void) { for (uint8_t i=0; i 1 // work out which GPS is the primary, and how many sensors we have for (uint8_t i=0; i state[primary_instance].status) { // we have a higher status lock, change GPS primary_instance = i; continue; } bool another_gps_has_1_or_more_sats = (state[i].num_sats >= state[primary_instance].num_sats + 1); if (state[i].status == state[primary_instance].status && another_gps_has_1_or_more_sats) { uint32_t now = hal.scheduler->millis(); bool another_gps_has_2_or_more_sats = (state[i].num_sats >= state[primary_instance].num_sats + 2); if ( (another_gps_has_1_or_more_sats && (now - _last_instance_swap_ms) >= 20000) || (another_gps_has_2_or_more_sats && (now - _last_instance_swap_ms) >= 5000 ) ) { // this GPS has more satellites than the // current primary, switch primary. Once we switch we will // then tend to stick to the new GPS as primary. We don't // want to switch too often as it will look like a // position shift to the controllers. primary_instance = i; _last_instance_swap_ms = now; } } } else { primary_instance = 0; } } #else num_instances = 1; #endif // GPS_MAX_INSTANCES // update notify with gps status. We always base this on the primary_instance AP_Notify::flags.gps_status = state[primary_instance].status; } /* set HIL (hardware in the loop) status for a GPS instance */ void AP_GPS::setHIL(uint8_t instance, GPS_Status _status, uint64_t time_epoch_ms, const Location &_location, const Vector3f &_velocity, uint8_t _num_sats, uint16_t hdop, bool _have_vertical_velocity) { if (instance >= GPS_MAX_INSTANCES) { return; } uint32_t tnow = hal.scheduler->millis(); GPS_State &istate = state[instance]; istate.status = _status; istate.location = _location; istate.location.options = 0; istate.velocity = _velocity; istate.ground_speed = pythagorous2(istate.velocity.x, istate.velocity.y); istate.ground_course_cd = wrap_360_cd(degrees(atan2f(istate.velocity.y, istate.velocity.x)) * 100UL); istate.hdop = hdop; istate.num_sats = _num_sats; istate.have_vertical_velocity |= _have_vertical_velocity; istate.last_gps_time_ms = tnow; uint64_t gps_time_ms = time_epoch_ms - (17000ULL*86400ULL + 52*10*7000ULL*86400ULL - 15000ULL); istate.time_week = gps_time_ms / (86400*7*(uint64_t)1000); istate.time_week_ms = gps_time_ms - istate.time_week*(86400*7*(uint64_t)1000); timing[instance].last_message_time_ms = tnow; timing[instance].last_fix_time_ms = tnow; _type[instance].set(GPS_TYPE_HIL); } /** Lock a GPS port, prevening the GPS driver from using it. This can be used to allow a user to control a GPS port via the SERIAL_CONTROL protocol */ void AP_GPS::lock_port(uint8_t instance, bool lock) { if (instance >= GPS_MAX_INSTANCES) { return; } if (lock) { locked_ports |= (1U< 1 //Support broadcasting to all GPSes. if (_inject_to == GPS_RTK_INJECT_TO_ALL) { for (uint8_t i=0; iinject_data(data, len); } void AP_GPS::send_mavlink_gps_raw(mavlink_channel_t chan) { static uint32_t last_send_time_ms[MAVLINK_COMM_NUM_BUFFERS]; if (status(0) > AP_GPS::NO_GPS) { // when we have a GPS then only send new data if (last_send_time_ms[chan] == last_message_time_ms(0)) { return; } last_send_time_ms[chan] = last_message_time_ms(0); } else { // when we don't have a GPS then send at 1Hz uint32_t now = hal.scheduler->millis(); if (now - last_send_time_ms[chan] < 1000) { return; } last_send_time_ms[chan] = now; } const Location &loc = location(0); mavlink_msg_gps_raw_int_send( chan, last_fix_time_ms(0)*(uint64_t)1000, status(0), loc.lat, // in 1E7 degrees loc.lng, // in 1E7 degrees loc.alt * 10UL, // in mm get_hdop(0), get_vdop(0), ground_speed(0)*100, // cm/s ground_course_cd(0), // 1/100 degrees, num_sats(0)); } #if GPS_MAX_INSTANCES > 1 void AP_GPS::send_mavlink_gps2_raw(mavlink_channel_t chan) { static uint32_t last_send_time_ms[MAVLINK_COMM_NUM_BUFFERS]; if (num_sensors() < 2 || status(1) <= AP_GPS::NO_GPS) { return; } // when we have a GPS then only send new data if (last_send_time_ms[chan] == last_message_time_ms(1)) { return; } last_send_time_ms[chan] = last_message_time_ms(1); const Location &loc = location(1); mavlink_msg_gps2_raw_send( chan, last_fix_time_ms(1)*(uint64_t)1000, status(1), loc.lat, loc.lng, loc.alt * 10UL, get_hdop(1), get_vdop(1), ground_speed(1)*100, // cm/s ground_course_cd(1), // 1/100 degrees, num_sats(1), 0, 0); } #endif #if GPS_RTK_AVAILABLE void AP_GPS::send_mavlink_gps_rtk(mavlink_channel_t chan) { if (drivers[0] != NULL && drivers[0]->highest_supported_status() > AP_GPS::GPS_OK_FIX_3D) { drivers[0]->send_mavlink_gps_rtk(chan); } } #if GPS_MAX_INSTANCES > 1 void AP_GPS::send_mavlink_gps2_rtk(mavlink_channel_t chan) { if (drivers[1] != NULL && drivers[1]->highest_supported_status() > AP_GPS::GPS_OK_FIX_3D) { drivers[1]->send_mavlink_gps_rtk(chan); } } #endif #endif