diff options
Diffstat (limited to 'src/modules')
-rw-r--r-- | src/modules/commander/commander.cpp | 65 | ||||
-rw-r--r-- | src/modules/commander/commander_helper.cpp | 44 | ||||
-rw-r--r-- | src/modules/commander/commander_helper.h | 7 | ||||
-rw-r--r-- | src/modules/commander/commander_params.c | 7 | ||||
-rw-r--r-- | src/modules/mavlink/mavlink.c | 4 | ||||
-rw-r--r-- | src/modules/sdlog2/sdlog2.c | 30 | ||||
-rw-r--r-- | src/modules/sdlog2/sdlog2_messages.h | 14 | ||||
-rw-r--r-- | src/modules/sensors/sensor_params.c | 1 | ||||
-rw-r--r-- | src/modules/sensors/sensors.cpp | 91 | ||||
-rw-r--r-- | src/modules/uORB/topics/battery_status.h | 9 |
10 files changed, 161 insertions, 111 deletions
diff --git a/src/modules/commander/commander.cpp b/src/modules/commander/commander.cpp index 0357542f0..add7312de 100644 --- a/src/modules/commander/commander.cpp +++ b/src/modules/commander/commander.cpp @@ -107,14 +107,9 @@ static const int ERROR = -1; extern struct system_load_s system_load; -#define LOW_VOLTAGE_BATTERY_HYSTERESIS_TIME_MS 1000.0f -#define CRITICAL_VOLTAGE_BATTERY_HYSTERESIS_TIME_MS 100.0f - /* Decouple update interval and hysteris counters, all depends on intervals */ #define COMMANDER_MONITORING_INTERVAL 50000 #define COMMANDER_MONITORING_LOOPSPERMSEC (1/(COMMANDER_MONITORING_INTERVAL/1000.0f)) -#define LOW_VOLTAGE_BATTERY_COUNTER_LIMIT (LOW_VOLTAGE_BATTERY_HYSTERESIS_TIME_MS*COMMANDER_MONITORING_LOOPSPERMSEC) -#define CRITICAL_VOLTAGE_BATTERY_COUNTER_LIMIT (CRITICAL_VOLTAGE_BATTERY_HYSTERESIS_TIME_MS*COMMANDER_MONITORING_LOOPSPERMSEC) #define MAVLINK_OPEN_INTERVAL 50000 @@ -666,8 +661,6 @@ int commander_thread_main(int argc, char *argv[]) /* Start monitoring loop */ unsigned counter = 0; - unsigned low_voltage_counter = 0; - unsigned critical_voltage_counter = 0; unsigned stick_off_counter = 0; unsigned stick_on_counter = 0; @@ -745,7 +738,6 @@ int commander_thread_main(int argc, char *argv[]) int battery_sub = orb_subscribe(ORB_ID(battery_status)); struct battery_status_s battery; memset(&battery, 0, sizeof(battery)); - battery.voltage_v = 0.0f; /* Subscribe to subsystem info topic */ int subsys_sub = orb_subscribe(ORB_ID(subsystem_info)); @@ -890,14 +882,12 @@ int commander_thread_main(int argc, char *argv[]) if (updated) { orb_copy(ORB_ID(battery_status), battery_sub, &battery); - - // warnx("bat v: %2.2f", battery.voltage_v); - - /* only consider battery voltage if system has been running 2s and battery voltage is higher than 4V */ - if (hrt_absolute_time() > start_time + 2000000 && battery.voltage_v > 4.0f) { - status.battery_voltage = battery.voltage_v; + /* only consider battery voltage if system has been running 2s and battery voltage is valid */ + if (hrt_absolute_time() > start_time + 2000000 && battery.voltage_filtered_v > 0.0f) { + status.battery_voltage = battery.voltage_filtered_v; + status.battery_current = battery.current_a; status.condition_battery_voltage_valid = true; - status.battery_remaining = battery_remaining_estimate_voltage(status.battery_voltage); + status.battery_remaining = battery_remaining_estimate_voltage(battery.voltage_filtered_v, battery.discharged_mah); } } @@ -950,46 +940,29 @@ int commander_thread_main(int argc, char *argv[]) //on_usb_power = (stat("/dev/ttyACM0", &statbuf) == 0); } - // XXX remove later - //warnx("bat remaining: %2.2f", status.battery_remaining); - /* if battery voltage is getting lower, warn using buzzer, etc. */ if (status.condition_battery_voltage_valid && status.battery_remaining < 0.25f && !low_battery_voltage_actions_done) { - //TODO: add filter, or call emergency after n measurements < VOLTAGE_BATTERY_MINIMAL_MILLIVOLTS - if (low_voltage_counter > LOW_VOLTAGE_BATTERY_COUNTER_LIMIT) { - low_battery_voltage_actions_done = true; - mavlink_log_critical(mavlink_fd, "#audio: WARNING: LOW BATTERY"); - status.battery_warning = VEHICLE_BATTERY_WARNING_LOW; - status_changed = true; - battery_tune_played = false; - } - - low_voltage_counter++; + low_battery_voltage_actions_done = true; + mavlink_log_critical(mavlink_fd, "#audio: WARNING: LOW BATTERY"); + status.battery_warning = VEHICLE_BATTERY_WARNING_LOW; + status_changed = true; + battery_tune_played = false; } else if (status.condition_battery_voltage_valid && status.battery_remaining < 0.1f && !critical_battery_voltage_actions_done && low_battery_voltage_actions_done) { /* critical battery voltage, this is rather an emergency, change state machine */ - if (critical_voltage_counter > CRITICAL_VOLTAGE_BATTERY_COUNTER_LIMIT) { - critical_battery_voltage_actions_done = true; - mavlink_log_critical(mavlink_fd, "#audio: EMERGENCY: CRITICAL BATTERY"); - status.battery_warning = VEHICLE_BATTERY_WARNING_CRITICAL; - battery_tune_played = false; - - if (armed.armed) { - arming_state_transition(&status, &safety, &control_mode, ARMING_STATE_ARMED_ERROR, &armed); + critical_battery_voltage_actions_done = true; + mavlink_log_critical(mavlink_fd, "#audio: EMERGENCY: CRITICAL BATTERY"); + status.battery_warning = VEHICLE_BATTERY_WARNING_CRITICAL; + battery_tune_played = false; - } else { - arming_state_transition(&status, &safety, &control_mode, ARMING_STATE_STANDBY_ERROR, &armed); - } + if (armed.armed) { + arming_state_transition(&status, &safety, &control_mode, ARMING_STATE_ARMED_ERROR, &armed); - status_changed = true; + } else { + arming_state_transition(&status, &safety, &control_mode, ARMING_STATE_STANDBY_ERROR, &armed); } - critical_voltage_counter++; - - } else { - - low_voltage_counter = 0; - critical_voltage_counter = 0; + status_changed = true; } /* End battery voltage check */ diff --git a/src/modules/commander/commander_helper.cpp b/src/modules/commander/commander_helper.cpp index 565b4b66a..21a1c4c2c 100644 --- a/src/modules/commander/commander_helper.cpp +++ b/src/modules/commander/commander_helper.cpp @@ -44,6 +44,7 @@ #include <stdint.h> #include <stdbool.h> #include <fcntl.h> +#include <math.h> #include <uORB/uORB.h> #include <uORB/topics/vehicle_status.h> @@ -251,36 +252,47 @@ void rgbled_set_pattern(rgbled_pattern_t *pattern) ioctl(rgbleds, RGBLED_SET_PATTERN, (unsigned long)pattern); } -float battery_remaining_estimate_voltage(float voltage) +float battery_remaining_estimate_voltage(float voltage, float discharged) { float ret = 0; - static param_t bat_volt_empty; - static param_t bat_volt_full; - static param_t bat_n_cells; + static param_t bat_v_empty_h; + static param_t bat_v_full_h; + static param_t bat_n_cells_h; + static param_t bat_capacity_h; + static float bat_v_empty = 3.2f; + static float bat_v_full = 4.0f; + static int bat_n_cells = 3; + static float bat_capacity = -1.0f; static bool initialized = false; static unsigned int counter = 0; - static float ncells = 3; - // XXX change cells to int (and param to INT32) if (!initialized) { - bat_volt_empty = param_find("BAT_V_EMPTY"); - bat_volt_full = param_find("BAT_V_FULL"); - bat_n_cells = param_find("BAT_N_CELLS"); + bat_v_empty_h = param_find("BAT_V_EMPTY"); + bat_v_full_h = param_find("BAT_V_FULL"); + bat_n_cells_h = param_find("BAT_N_CELLS"); + bat_capacity_h = param_find("BAT_CAPACITY"); initialized = true; } - static float chemistry_voltage_empty = 3.2f; - static float chemistry_voltage_full = 4.05f; - if (counter % 100 == 0) { - param_get(bat_volt_empty, &chemistry_voltage_empty); - param_get(bat_volt_full, &chemistry_voltage_full); - param_get(bat_n_cells, &ncells); + param_get(bat_v_empty_h, &bat_v_empty); + param_get(bat_v_full_h, &bat_v_full); + param_get(bat_n_cells_h, &bat_n_cells); + param_get(bat_capacity_h, &bat_capacity); } counter++; - ret = (voltage - ncells * chemistry_voltage_empty) / (ncells * (chemistry_voltage_full - chemistry_voltage_empty)); + /* remaining charge estimate based on voltage */ + float remaining_voltage = (voltage - bat_n_cells * bat_v_empty) / (bat_n_cells * (bat_v_full - bat_v_empty)); + + if (bat_capacity > 0.0f) { + /* if battery capacity is known, use discharged current for estimate, but don't show more than voltage estimate */ + ret = fminf(remaining_voltage, 1.0f - discharged / bat_capacity); + } else { + /* else use voltage */ + ret = remaining_voltage; + } /* limit to sane values */ ret = (ret < 0.0f) ? 0.0f : ret; diff --git a/src/modules/commander/commander_helper.h b/src/modules/commander/commander_helper.h index e9514446c..d0393f45a 100644 --- a/src/modules/commander/commander_helper.h +++ b/src/modules/commander/commander_helper.h @@ -75,12 +75,13 @@ void rgbled_set_mode(rgbled_mode_t mode); void rgbled_set_pattern(rgbled_pattern_t *pattern); /** - * Provides a coarse estimate of remaining battery power. + * Estimate remaining battery charge. * - * The estimate is very basic and based on decharging voltage curves. + * Use integral of current if battery capacity known (BAT_CAPACITY parameter set), + * else use simple estimate based on voltage. * * @return the estimated remaining capacity in 0..1 */ -float battery_remaining_estimate_voltage(float voltage); +float battery_remaining_estimate_voltage(float voltage, float discharged); #endif /* COMMANDER_HELPER_H_ */ diff --git a/src/modules/commander/commander_params.c b/src/modules/commander/commander_params.c index 40d0386d5..e10b7f18d 100644 --- a/src/modules/commander/commander_params.c +++ b/src/modules/commander/commander_params.c @@ -50,6 +50,7 @@ PARAM_DEFINE_FLOAT(NAV_TAKEOFF_GAP, 3.0f); PARAM_DEFINE_FLOAT(TRIM_ROLL, 0.0f); PARAM_DEFINE_FLOAT(TRIM_PITCH, 0.0f); PARAM_DEFINE_FLOAT(TRIM_YAW, 0.0f); -PARAM_DEFINE_FLOAT(BAT_V_EMPTY, 3.2f); -PARAM_DEFINE_FLOAT(BAT_V_FULL, 4.05f); -PARAM_DEFINE_FLOAT(BAT_N_CELLS, 3); +PARAM_DEFINE_FLOAT(BAT_V_EMPTY, 3.4f); +PARAM_DEFINE_FLOAT(BAT_V_FULL, 3.9f); +PARAM_DEFINE_INT32(BAT_N_CELLS, 3); +PARAM_DEFINE_FLOAT(BAT_CAPACITY, -1.0f); diff --git a/src/modules/mavlink/mavlink.c b/src/modules/mavlink/mavlink.c index 7c10e297b..20853379d 100644 --- a/src/modules/mavlink/mavlink.c +++ b/src/modules/mavlink/mavlink.c @@ -677,8 +677,8 @@ int mavlink_thread_main(int argc, char *argv[]) v_status.onboard_control_sensors_health, v_status.load * 1000.0f, v_status.battery_voltage * 1000.0f, - v_status.battery_current * 1000.0f, - v_status.battery_remaining, + v_status.battery_current * 100.0f, + v_status.battery_remaining * 100.0f, v_status.drop_rate_comm, v_status.errors_comm, v_status.errors_count1, diff --git a/src/modules/sdlog2/sdlog2.c b/src/modules/sdlog2/sdlog2.c index e94b1e13c..06b1eddaa 100644 --- a/src/modules/sdlog2/sdlog2.c +++ b/src/modules/sdlog2/sdlog2.c @@ -1,6 +1,6 @@ /**************************************************************************** * - * Copyright (c) 2012, 2013 PX4 Development Team. All rights reserved. + * Copyright (c) 2012-2014 PX4 Development Team. All rights reserved. * Author: Lorenz Meier <lm@inf.ethz.ch> * Anton Babushkin <anton.babushkin@me.com> * @@ -702,6 +702,7 @@ int sdlog2_thread_main(int argc, char *argv[]) struct airspeed_s airspeed; struct esc_status_s esc; struct vehicle_global_velocity_setpoint_s global_vel_sp; + struct battery_status_s battery; } buf; memset(&buf, 0, sizeof(buf)); @@ -726,6 +727,7 @@ int sdlog2_thread_main(int argc, char *argv[]) int airspeed_sub; int esc_sub; int global_vel_sp_sub; + int battery_sub; } subs; /* log message buffer: header + body */ @@ -752,6 +754,7 @@ int sdlog2_thread_main(int argc, char *argv[]) struct log_GPSP_s log_GPSP; struct log_ESC_s log_ESC; struct log_GVSP_s log_GVSP; + struct log_BATT_s log_BATT; } body; } log_msg = { LOG_PACKET_HEADER_INIT(0) @@ -760,9 +763,9 @@ int sdlog2_thread_main(int argc, char *argv[]) memset(&log_msg.body, 0, sizeof(log_msg.body)); /* --- IMPORTANT: DEFINE NUMBER OF ORB STRUCTS TO WAIT FOR HERE --- */ - /* number of subscriptions */ - const ssize_t fdsc = 19; - /* sanity check variable and index */ + /* number of messages */ + const ssize_t fdsc = 25; + /* Sanity check variable and index */ ssize_t fdsc_count = 0; /* file descriptors to wait for */ struct pollfd fds[fdsc]; @@ -881,6 +884,12 @@ int sdlog2_thread_main(int argc, char *argv[]) fds[fdsc_count].events = POLLIN; fdsc_count++; + /* --- BATTERY --- */ + subs.battery_sub = orb_subscribe(ORB_ID(battery_status)); + fds[fdsc_count].fd = subs.battery_sub; + fds[fdsc_count].events = POLLIN; + fdsc_count++; + /* WARNING: If you get the error message below, * then the number of registered messages (fdsc) * differs from the number of messages in the above list. @@ -971,8 +980,6 @@ int sdlog2_thread_main(int argc, char *argv[]) log_msg.body.log_STAT.main_state = (uint8_t) buf_status.main_state; log_msg.body.log_STAT.navigation_state = (uint8_t) buf_status.navigation_state; log_msg.body.log_STAT.arming_state = (uint8_t) buf_status.arming_state; - log_msg.body.log_STAT.battery_voltage = buf_status.battery_voltage; - log_msg.body.log_STAT.battery_current = buf_status.battery_current; log_msg.body.log_STAT.battery_remaining = buf_status.battery_remaining; log_msg.body.log_STAT.battery_warning = (uint8_t) buf_status.battery_warning; log_msg.body.log_STAT.landed = (uint8_t) buf_status.condition_landed; @@ -1238,6 +1245,17 @@ int sdlog2_thread_main(int argc, char *argv[]) LOGBUFFER_WRITE_AND_COUNT(GVSP); } + /* --- BATTERY --- */ + if (fds[ifds++].revents & POLLIN) { + orb_copy(ORB_ID(battery_status), subs.battery_sub, &buf.battery); + log_msg.msg_type = LOG_BATT_MSG; + log_msg.body.log_BATT.voltage = buf.battery.voltage_v; + log_msg.body.log_BATT.voltage_filtered = buf.battery.voltage_filtered_v; + log_msg.body.log_BATT.current = buf.battery.current_a; + log_msg.body.log_BATT.discharged = buf.battery.discharged_mah; + LOGBUFFER_WRITE_AND_COUNT(BATT); + } + /* signal the other thread new data, but not yet unlock */ if (logbuffer_count(&lb) > MIN_BYTES_TO_WRITE) { /* only request write if several packets can be written at once */ diff --git a/src/modules/sdlog2/sdlog2_messages.h b/src/modules/sdlog2/sdlog2_messages.h index ab4dc9b00..a784a1f30 100644 --- a/src/modules/sdlog2/sdlog2_messages.h +++ b/src/modules/sdlog2/sdlog2_messages.h @@ -148,8 +148,6 @@ struct log_STAT_s { uint8_t main_state; uint8_t navigation_state; uint8_t arming_state; - float battery_voltage; - float battery_current; float battery_remaining; uint8_t battery_warning; uint8_t landed; @@ -248,6 +246,15 @@ struct log_GVSP_s { float vz; }; +/* --- BATT - BATTERY --- */ +#define LOG_BATT_MSG 20 +struct log_BATT_s { + float voltage; + float voltage_filtered; + float current; + float discharged; +}; + /* --- TIME - TIME STAMP --- */ #define LOG_TIME_MSG 129 struct log_TIME_s { @@ -281,7 +288,7 @@ static const struct log_format_s log_formats[] = { LOG_FORMAT(LPSP, "ffff", "X,Y,Z,Yaw"), LOG_FORMAT(GPS, "QBffLLfffff", "GPSTime,FixType,EPH,EPV,Lat,Lon,Alt,VelN,VelE,VelD,Cog"), LOG_FORMAT(ATTC, "ffff", "Roll,Pitch,Yaw,Thrust"), - LOG_FORMAT(STAT, "BBBfffBB", "MainState,NavState,ArmState,BatV,BatC,BatRem,BatWarn,Landed"), + LOG_FORMAT(STAT, "BBBfBB", "MainState,NavState,ArmState,BatRem,BatWarn,Landed"), LOG_FORMAT(RC, "ffffffffB", "Ch0,Ch1,Ch2,Ch3,Ch4,Ch5,Ch6,Ch7,Count"), LOG_FORMAT(OUT0, "ffffffff", "Out0,Out1,Out2,Out3,Out4,Out5,Out6,Out7"), LOG_FORMAT(AIRS, "ff", "IndSpeed,TrueSpeed"), @@ -291,6 +298,7 @@ static const struct log_format_s log_formats[] = { LOG_FORMAT(GPSP, "BLLfffbBffff", "AltRel,Lat,Lon,Alt,Yaw,LoiterR,LoiterDir,NavCmd,P1,P2,P3,P4"), LOG_FORMAT(ESC, "HBBBHHHHHHfH", "Counter,NumESC,Conn,N,Ver,Adr,Volt,Amp,RPM,Temp,SetP,SetPRAW"), LOG_FORMAT(GVSP, "fff", "VX,VY,VZ"), + LOG_FORMAT(BATT, "ffff", "V,VFilt,C,Discharged"), /* system-level messages, ID >= 0x80 */ // FMT: don't write format of format message, it's useless LOG_FORMAT(TIME, "Q", "StartTime"), diff --git a/src/modules/sensors/sensor_params.c b/src/modules/sensors/sensor_params.c index caec03e04..bbc84ef93 100644 --- a/src/modules/sensors/sensor_params.c +++ b/src/modules/sensors/sensor_params.c @@ -379,6 +379,7 @@ PARAM_DEFINE_FLOAT(BAT_V_SCALING, 0.0082f); /* FMU with PX4IOAR: (3.3f * 52.0f / 5.0f / 4095.0f) */ PARAM_DEFINE_FLOAT(BAT_V_SCALING, 0.00459340659f); #endif +PARAM_DEFINE_FLOAT(BAT_C_SCALING, 0.0124); /* scaling for 3DR power brick */ PARAM_DEFINE_INT32(RC_MAP_ROLL, 1); PARAM_DEFINE_INT32(RC_MAP_PITCH, 2); diff --git a/src/modules/sensors/sensors.cpp b/src/modules/sensors/sensors.cpp index d9f037c27..ff6c5882e 100644 --- a/src/modules/sensors/sensors.cpp +++ b/src/modules/sensors/sensors.cpp @@ -114,6 +114,7 @@ #ifdef CONFIG_ARCH_BOARD_PX4FMU_V1 #define ADC_BATTERY_VOLTAGE_CHANNEL 10 +#define ADC_BATTERY_CURRENT_CHANNEL -1 #define ADC_AIRSPEED_VOLTAGE_CHANNEL 11 #endif @@ -124,10 +125,8 @@ #define ADC_AIRSPEED_VOLTAGE_CHANNEL 15 #endif -#define BAT_VOL_INITIAL 0.f -#define BAT_VOL_LOWPASS_1 0.99f -#define BAT_VOL_LOWPASS_2 0.01f -#define VOLTAGE_BATTERY_IGNORE_THRESHOLD_VOLTS 3.5f +#define BATT_V_LOWPASS 0.001f +#define BATT_V_IGNORE_THRESHOLD 3.5f /** * HACK - true temperature is much less than indicated temperature in baro, @@ -215,6 +214,9 @@ private: math::Matrix _external_mag_rotation; /**< rotation matrix for the orientation that an external mag is mounted */ bool _mag_is_external; /**< true if the active mag is on an external board */ + uint64_t _battery_discharged; /**< battery discharged current in mA*ms */ + hrt_abstime _battery_current_timestamp; /**< timestamp of last battery current reading */ + struct { float min[_rc_max_chan_count]; float trim[_rc_max_chan_count]; @@ -265,6 +267,7 @@ private: float rc_fs_thr; float battery_voltage_scaling; + float battery_current_scaling; } _parameters; /**< local copies of interesting parameters */ @@ -314,6 +317,7 @@ private: param_t rc_fs_thr; param_t battery_voltage_scaling; + param_t battery_current_scaling; param_t board_rotation; param_t external_mag_rotation; @@ -467,7 +471,9 @@ Sensors::Sensors() : _board_rotation(3, 3), _external_mag_rotation(3, 3), - _mag_is_external(false) + _mag_is_external(false), + _battery_discharged(0), + _battery_current_timestamp(0) { /* basic r/c parameters */ @@ -560,6 +566,7 @@ Sensors::Sensors() : _parameter_handles.diff_pres_analog_enabled = param_find("SENS_DPRES_ANA"); _parameter_handles.battery_voltage_scaling = param_find("BAT_V_SCALING"); + _parameter_handles.battery_current_scaling = param_find("BAT_C_SCALING"); /* rotations */ _parameter_handles.board_rotation = param_find("SENS_BOARD_ROT"); @@ -740,6 +747,11 @@ Sensors::parameters_update() warnx("Failed updating voltage scaling param"); } + /* scaling of ADC ticks to battery current */ + if (param_get(_parameter_handles.battery_current_scaling, &(_parameters.battery_current_scaling)) != OK) { + warnx("Failed updating current scaling param"); + } + param_get(_parameter_handles.board_rotation, &(_parameters.board_rotation)); param_get(_parameter_handles.external_mag_rotation, &(_parameters.external_mag_rotation)); @@ -1157,17 +1169,16 @@ Sensors::adc_poll(struct sensor_combined_s &raw) if (!_publishing) return; + hrt_abstime t = hrt_absolute_time(); /* rate limit to 100 Hz */ - if (hrt_absolute_time() - _last_adc >= 10000) { + if (t - _last_adc >= 10000) { /* make space for a maximum of eight channels */ struct adc_msg_s buf_adc[8]; /* read all channels available */ int ret = read(_fd_adc, &buf_adc, sizeof(buf_adc)); - for (unsigned i = 0; i < sizeof(buf_adc) / sizeof(buf_adc[0]); i++) { - - if (ret >= (int)sizeof(buf_adc[0])) { - + if (ret >= (int)sizeof(buf_adc[0])) { + for (unsigned i = 0; i < sizeof(buf_adc) / sizeof(buf_adc[0]); i++) { /* Save raw voltage values */ if (i < (sizeof(raw.adc_voltage_v)) / sizeof(raw.adc_voltage_v[0])) { raw.adc_voltage_v[i] = buf_adc[i].am_data / (4096.0f / 3.3f); @@ -1178,27 +1189,40 @@ Sensors::adc_poll(struct sensor_combined_s &raw) /* Voltage in volts */ float voltage = (buf_adc[i].am_data * _parameters.battery_voltage_scaling); - if (voltage > VOLTAGE_BATTERY_IGNORE_THRESHOLD_VOLTS) { - + if (voltage > BATT_V_IGNORE_THRESHOLD) { + _battery_status.voltage_v = voltage; /* one-time initialization of low-pass value to avoid long init delays */ - if (_battery_status.voltage_v < 3.0f) { - _battery_status.voltage_v = voltage; + if (_battery_status.voltage_filtered_v < BATT_V_IGNORE_THRESHOLD) { + _battery_status.voltage_filtered_v = voltage; } - _battery_status.timestamp = hrt_absolute_time(); - _battery_status.voltage_v = (BAT_VOL_LOWPASS_1 * (_battery_status.voltage_v + BAT_VOL_LOWPASS_2 * voltage));; - /* current and discharge are unknown */ - _battery_status.current_a = -1.0f; - _battery_status.discharged_mah = -1.0f; + _battery_status.timestamp = t; + _battery_status.voltage_filtered_v += (voltage - _battery_status.voltage_filtered_v) * BATT_V_LOWPASS; - /* announce the battery voltage if needed, just publish else */ - if (_battery_pub > 0) { - orb_publish(ORB_ID(battery_status), _battery_pub, &_battery_status); + } else { + /* mark status as invalid */ + _battery_status.voltage_v = -1.0f; + _battery_status.voltage_filtered_v = -1.0f; + } - } else { - _battery_pub = orb_advertise(ORB_ID(battery_status), &_battery_status); + } else if (ADC_BATTERY_CURRENT_CHANNEL == buf_adc[i].am_channel) { + /* handle current only if voltage is valid */ + if (_battery_status.voltage_v > 0.0f) { + float current = (buf_adc[i].am_data * _parameters.battery_current_scaling); + /* check measured current value */ + if (current >= 0.0f) { + _battery_status.timestamp = t; + _battery_status.current_a = current; + if (_battery_current_timestamp != 0) { + /* initialize discharged value */ + if (_battery_status.discharged_mah < 0.0f) + _battery_status.discharged_mah = 0.0f; + _battery_discharged += current * (t - _battery_current_timestamp); + _battery_status.discharged_mah = ((float) _battery_discharged) / 3600000.0f; + } } } + _battery_current_timestamp = t; } else if (ADC_AIRSPEED_VOLTAGE_CHANNEL == buf_adc[i].am_channel) { @@ -1214,7 +1238,7 @@ Sensors::adc_poll(struct sensor_combined_s &raw) float diff_pres_pa = voltage * 1000.0f - _parameters.diff_pres_offset_pa; //for MPXV7002DP sensor - _diff_pres.timestamp = hrt_absolute_time(); + _diff_pres.timestamp = t; _diff_pres.differential_pressure_pa = diff_pres_pa; _diff_pres.voltage = voltage; @@ -1227,8 +1251,16 @@ Sensors::adc_poll(struct sensor_combined_s &raw) } } } - - _last_adc = hrt_absolute_time(); + } + _last_adc = t; + if (_battery_status.voltage_v > 0.0f) { + /* announce the battery status if needed, just publish else */ + if (_battery_pub > 0) { + orb_publish(ORB_ID(battery_status), _battery_pub, &_battery_status); + + } else { + _battery_pub = orb_advertise(ORB_ID(battery_status), &_battery_status); + } } } } @@ -1516,7 +1548,10 @@ Sensors::task_main() raw.adc_voltage_v[3] = 0.0f; memset(&_battery_status, 0, sizeof(_battery_status)); - _battery_status.voltage_v = BAT_VOL_INITIAL; + _battery_status.voltage_v = 0.0f; + _battery_status.voltage_filtered_v = 0.0f; + _battery_status.current_a = -1.0f; + _battery_status.discharged_mah = -1.0f; /* get a set of initial values */ accel_poll(raw); diff --git a/src/modules/uORB/topics/battery_status.h b/src/modules/uORB/topics/battery_status.h index c40d0d4e5..d473dff3f 100644 --- a/src/modules/uORB/topics/battery_status.h +++ b/src/modules/uORB/topics/battery_status.h @@ -53,9 +53,10 @@ */ struct battery_status_s { uint64_t timestamp; /**< microseconds since system boot, needed to integrate */ - float voltage_v; /**< Battery voltage in volts, filtered */ - float current_a; /**< Battery current in amperes, filtered, -1 if unknown */ - float discharged_mah; /**< Discharged amount in mAh, filtered, -1 if unknown */ + float voltage_v; /**< Battery voltage in volts, 0 if unknown */ + float voltage_filtered_v; /**< Battery voltage in volts, filtered, 0 if unknown */ + float current_a; /**< Battery current in amperes, -1 if unknown */ + float discharged_mah; /**< Discharged amount in mAh, -1 if unknown */ }; /** @@ -65,4 +66,4 @@ struct battery_status_s { /* register this as object request broker structure */ ORB_DECLARE(battery_status); -#endif
\ No newline at end of file +#endif |