#pragma once #include #include #include #include #include "AP_BattMonitor_Params.h" // maximum number of battery monitors #define AP_BATT_MONITOR_MAX_INSTANCES 9 // first monitor is always the primary monitor #define AP_BATT_PRIMARY_INSTANCE 0 #define AP_BATT_SERIAL_NUMBER_DEFAULT -1 #define AP_BATT_MONITOR_TIMEOUT 5000 #define AP_BATT_MONITOR_RES_EST_TC_1 0.5f #define AP_BATT_MONITOR_RES_EST_TC_2 0.1f // declare backend class class AP_BattMonitor_Backend; class AP_BattMonitor_Analog; class AP_BattMonitor_SMBus; class AP_BattMonitor_SMBus_Solo; class AP_BattMonitor_SMBus_Maxell; class AP_BattMonitor_UAVCAN; class AP_BattMonitor { friend class AP_BattMonitor_Backend; friend class AP_BattMonitor_Analog; friend class AP_BattMonitor_SMBus; friend class AP_BattMonitor_SMBus_Solo; friend class AP_BattMonitor_SMBus_Maxell; friend class AP_BattMonitor_UAVCAN; friend class AP_BattMonitor_Sum; friend class AP_BattMonitor_FuelFlow; friend class AP_BattMonitor_FuelLevel_PWM; public: // battery failsafes must be defined in levels of severity so that vehicles wont fall backwards enum BatteryFailsafe { BatteryFailsafe_None = 0, BatteryFailsafe_Low, BatteryFailsafe_Critical }; FUNCTOR_TYPEDEF(battery_failsafe_handler_fn_t, void, const char *, const int8_t); AP_BattMonitor(uint32_t log_battery_bit, battery_failsafe_handler_fn_t battery_failsafe_handler_fn, const int8_t *failsafe_priorities); /* Do not allow copies */ AP_BattMonitor(const AP_BattMonitor &other) = delete; AP_BattMonitor &operator=(const AP_BattMonitor&) = delete; static AP_BattMonitor *get_singleton() { return _singleton; } struct cells { uint16_t cells[MAVLINK_MSG_BATTERY_STATUS_FIELD_VOLTAGES_LEN]; }; // The BattMonitor_State structure is filled in by the backend driver struct BattMonitor_State { cells cell_voltages; // battery cell voltages in millivolts, 10 cells matches the MAVLink spec float voltage; // voltage in volts float current_amps; // current in amperes float consumed_mah; // total current draw in milliamp hours since start-up float consumed_wh; // total energy consumed in Wh since start-up uint32_t last_time_micros; // time when voltage and current was last read in microseconds uint32_t low_voltage_start_ms; // time when voltage dropped below the minimum in milliseconds uint32_t critical_voltage_start_ms; // critical voltage failsafe start timer in milliseconds float temperature; // battery temperature in degrees Celsius uint32_t temperature_time; // timestamp of the last received temperature message float voltage_resting_estimate; // voltage with sag removed based on current and resistance estimate in Volt float resistance; // resistance, in Ohms, calculated by comparing resting voltage vs in flight voltage BatteryFailsafe failsafe; // stage failsafe the battery is in bool healthy; // battery monitor is communicating correctly bool is_powering_off; // true when power button commands power off bool powerOffNotified; // only send powering off notification once }; // Return the number of battery monitor instances uint8_t num_instances(void) const { return _num_instances; } // detect and initialise any available battery monitors void init(); /// Read the battery voltage and current for all batteries. Should be called at 10hz void read(); // healthy - returns true if monitor is functioning bool healthy(uint8_t instance) const; bool healthy() const { return healthy(AP_BATT_PRIMARY_INSTANCE); } /// voltage - returns battery voltage in millivolts float voltage(uint8_t instance) const; float voltage() const { return voltage(AP_BATT_PRIMARY_INSTANCE); } /// get voltage with sag removed (based on battery current draw and resistance) /// this will always be greater than or equal to the raw voltage float voltage_resting_estimate(uint8_t instance) const; float voltage_resting_estimate() const { return voltage_resting_estimate(AP_BATT_PRIMARY_INSTANCE); } /// current_amps - returns the instantaneous current draw in amperes bool current_amps(float ¤t, const uint8_t instance = AP_BATT_PRIMARY_INSTANCE) const WARN_IF_UNUSED; /// consumed_mah - returns total current drawn since start-up in milliampere.hours bool consumed_mah(float &mah, const uint8_t instance = AP_BATT_PRIMARY_INSTANCE) const WARN_IF_UNUSED; /// consumed_wh - returns total energy drawn since start-up in watt.hours bool consumed_wh(float&wh, const uint8_t instance = AP_BATT_PRIMARY_INSTANCE) const WARN_IF_UNUSED; /// capacity_remaining_pct - returns the % battery capacity remaining (0 ~ 100) virtual uint8_t capacity_remaining_pct(uint8_t instance) const; uint8_t capacity_remaining_pct() const { return capacity_remaining_pct(AP_BATT_PRIMARY_INSTANCE); } /// pack_capacity_mah - returns the capacity of the battery pack in mAh when the pack is full int32_t pack_capacity_mah(uint8_t instance) const; int32_t pack_capacity_mah() const { return pack_capacity_mah(AP_BATT_PRIMARY_INSTANCE); } /// returns true if a battery failsafe has ever been triggered bool has_failsafed(void) const { return _has_triggered_failsafe; }; /// returns the highest failsafe action that has been triggered int8_t get_highest_failsafe_priority(void) const { return _highest_failsafe_priority; }; /// get_type - returns battery monitor type enum AP_BattMonitor_Params::BattMonitor_Type get_type() const { return get_type(AP_BATT_PRIMARY_INSTANCE); } enum AP_BattMonitor_Params::BattMonitor_Type get_type(uint8_t instance) const { return _params[instance].type(); } /// true when (voltage * current) > watt_max bool overpower_detected() const; bool overpower_detected(uint8_t instance) const; // cell voltages bool has_cell_voltages() { return has_cell_voltages(AP_BATT_PRIMARY_INSTANCE); } bool has_cell_voltages(const uint8_t instance) const; const cells & get_cell_voltages() const { return get_cell_voltages(AP_BATT_PRIMARY_INSTANCE); } const cells & get_cell_voltages(const uint8_t instance) const; // temperature bool get_temperature(float &temperature) const { return get_temperature(temperature, AP_BATT_PRIMARY_INSTANCE); }; bool get_temperature(float &temperature, const uint8_t instance) const; // get battery resistance estimate in ohms float get_resistance() const { return get_resistance(AP_BATT_PRIMARY_INSTANCE); } float get_resistance(uint8_t instance) const { return state[instance].resistance; } // returns false if we fail arming checks, in which case the buffer will be populated with a failure message bool arming_checks(size_t buflen, char *buffer) const; // sends powering off mavlink broadcasts and sets notify flag void checkPoweringOff(void); // reset battery remaining percentage bool reset_remaining(uint16_t battery_mask, float percentage); static const struct AP_Param::GroupInfo var_info[]; protected: /// parameters AP_BattMonitor_Params _params[AP_BATT_MONITOR_MAX_INSTANCES]; private: static AP_BattMonitor *_singleton; BattMonitor_State state[AP_BATT_MONITOR_MAX_INSTANCES]; AP_BattMonitor_Backend *drivers[AP_BATT_MONITOR_MAX_INSTANCES]; uint32_t _log_battery_bit; uint8_t _num_instances; /// number of monitors void convert_params(void); /// returns the failsafe state of the battery BatteryFailsafe check_failsafe(const uint8_t instance); void check_failsafes(void); // checks all batteries failsafes battery_failsafe_handler_fn_t _battery_failsafe_handler_fn; const int8_t *_failsafe_priorities; // array of failsafe priorities, sorted highest to lowest priority, -1 indicates no more entries int8_t _highest_failsafe_priority; // highest selected failsafe action level (used to restrict what actions we move into) bool _has_triggered_failsafe; // true after a battery failsafe has been triggered for the first time }; namespace AP { AP_BattMonitor &battery(); };