cc6298e7ac
Checks for the highest cell for 15 seconds and then reduces the cell voltage calls to cover only those cells that actually exist also renames SMBus _last_cell_update_us
210 lines
8.9 KiB
C++
210 lines
8.9 KiB
C++
#pragma once
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#include <AP_Common/AP_Common.h>
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#include <AP_Param/AP_Param.h>
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#include <AP_Math/AP_Math.h>
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#include <GCS_MAVLink/GCS_MAVLink.h>
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#include "AP_BattMonitor_Params.h"
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// maximum number of battery monitors
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#define AP_BATT_MONITOR_MAX_INSTANCES 9
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// first monitor is always the primary monitor
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#define AP_BATT_PRIMARY_INSTANCE 0
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#define AP_BATT_SERIAL_NUMBER_DEFAULT -1
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#define AP_BATT_MONITOR_TIMEOUT 5000
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#define AP_BATT_MONITOR_RES_EST_TC_1 0.5f
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#define AP_BATT_MONITOR_RES_EST_TC_2 0.1f
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#define AP_BATT_MONITOR_CELLS_MAX 12
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#ifndef HAL_BATTMON_SMBUS_ENABLE
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#define HAL_BATTMON_SMBUS_ENABLE 1
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#endif
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#ifndef HAL_BATTMON_FUEL_ENABLE
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#define HAL_BATTMON_FUEL_ENABLE 1
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#endif
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// declare backend class
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class AP_BattMonitor_Backend;
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class AP_BattMonitor_Analog;
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class AP_BattMonitor_SMBus;
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class AP_BattMonitor_SMBus_Solo;
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class AP_BattMonitor_SMBus_Generic;
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class AP_BattMonitor_SMBus_Maxell;
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class AP_BattMonitor_UAVCAN;
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class AP_BattMonitor
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{
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friend class AP_BattMonitor_Backend;
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friend class AP_BattMonitor_Analog;
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friend class AP_BattMonitor_SMBus;
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friend class AP_BattMonitor_SMBus_Solo;
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friend class AP_BattMonitor_SMBus_Generic;
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friend class AP_BattMonitor_SMBus_Maxell;
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friend class AP_BattMonitor_UAVCAN;
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friend class AP_BattMonitor_Sum;
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friend class AP_BattMonitor_FuelFlow;
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friend class AP_BattMonitor_FuelLevel_PWM;
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public:
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// battery failsafes must be defined in levels of severity so that vehicles wont fall backwards
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enum BatteryFailsafe {
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BatteryFailsafe_None = 0,
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BatteryFailsafe_Low,
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BatteryFailsafe_Critical
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};
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FUNCTOR_TYPEDEF(battery_failsafe_handler_fn_t, void, const char *, const int8_t);
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AP_BattMonitor(uint32_t log_battery_bit, battery_failsafe_handler_fn_t battery_failsafe_handler_fn, const int8_t *failsafe_priorities);
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/* Do not allow copies */
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AP_BattMonitor(const AP_BattMonitor &other) = delete;
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AP_BattMonitor &operator=(const AP_BattMonitor&) = delete;
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static AP_BattMonitor *get_singleton() {
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return _singleton;
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}
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struct cells {
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uint16_t cells[AP_BATT_MONITOR_CELLS_MAX];
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};
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// The BattMonitor_State structure is filled in by the backend driver
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struct BattMonitor_State {
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cells cell_voltages; // battery cell voltages in millivolts, 10 cells matches the MAVLink spec
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float voltage; // voltage in volts
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float current_amps; // current in amperes
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float consumed_mah; // total current draw in milliamp hours since start-up
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float consumed_wh; // total energy consumed in Wh since start-up
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uint32_t last_time_micros; // time when voltage and current was last read in microseconds
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uint32_t low_voltage_start_ms; // time when voltage dropped below the minimum in milliseconds
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uint32_t critical_voltage_start_ms; // critical voltage failsafe start timer in milliseconds
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float temperature; // battery temperature in degrees Celsius
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uint32_t temperature_time; // timestamp of the last received temperature message
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float voltage_resting_estimate; // voltage with sag removed based on current and resistance estimate in Volt
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float resistance; // resistance, in Ohms, calculated by comparing resting voltage vs in flight voltage
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BatteryFailsafe failsafe; // stage failsafe the battery is in
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bool healthy; // battery monitor is communicating correctly
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bool is_powering_off; // true when power button commands power off
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bool powerOffNotified; // only send powering off notification once
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};
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// Return the number of battery monitor instances
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uint8_t num_instances(void) const { return _num_instances; }
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// detect and initialise any available battery monitors
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void init();
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/// Read the battery voltage and current for all batteries. Should be called at 10hz
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void read();
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// healthy - returns true if monitor is functioning
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bool healthy(uint8_t instance) const;
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bool healthy() const { return healthy(AP_BATT_PRIMARY_INSTANCE); }
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/// voltage - returns battery voltage in millivolts
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float voltage(uint8_t instance) const;
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float voltage() const { return voltage(AP_BATT_PRIMARY_INSTANCE); }
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/// get voltage with sag removed (based on battery current draw and resistance)
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/// this will always be greater than or equal to the raw voltage
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float voltage_resting_estimate(uint8_t instance) const;
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float voltage_resting_estimate() const { return voltage_resting_estimate(AP_BATT_PRIMARY_INSTANCE); }
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/// current_amps - returns the instantaneous current draw in amperes
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bool current_amps(float ¤t, const uint8_t instance = AP_BATT_PRIMARY_INSTANCE) const WARN_IF_UNUSED;
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/// consumed_mah - returns total current drawn since start-up in milliampere.hours
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bool consumed_mah(float &mah, const uint8_t instance = AP_BATT_PRIMARY_INSTANCE) const WARN_IF_UNUSED;
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/// consumed_wh - returns total energy drawn since start-up in watt.hours
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bool consumed_wh(float&wh, const uint8_t instance = AP_BATT_PRIMARY_INSTANCE) const WARN_IF_UNUSED;
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/// capacity_remaining_pct - returns the % battery capacity remaining (0 ~ 100)
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virtual uint8_t capacity_remaining_pct(uint8_t instance) const;
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uint8_t capacity_remaining_pct() const { return capacity_remaining_pct(AP_BATT_PRIMARY_INSTANCE); }
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/// pack_capacity_mah - returns the capacity of the battery pack in mAh when the pack is full
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int32_t pack_capacity_mah(uint8_t instance) const;
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int32_t pack_capacity_mah() const { return pack_capacity_mah(AP_BATT_PRIMARY_INSTANCE); }
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/// returns true if a battery failsafe has ever been triggered
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bool has_failsafed(void) const { return _has_triggered_failsafe; };
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/// returns the highest failsafe action that has been triggered
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int8_t get_highest_failsafe_priority(void) const { return _highest_failsafe_priority; };
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/// get_type - returns battery monitor type
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enum AP_BattMonitor_Params::BattMonitor_Type get_type() const { return get_type(AP_BATT_PRIMARY_INSTANCE); }
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enum AP_BattMonitor_Params::BattMonitor_Type get_type(uint8_t instance) const { return _params[instance].type(); }
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/// true when (voltage * current) > watt_max
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bool overpower_detected() const;
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bool overpower_detected(uint8_t instance) const;
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// cell voltages
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bool has_cell_voltages() { return has_cell_voltages(AP_BATT_PRIMARY_INSTANCE); }
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bool has_cell_voltages(const uint8_t instance) const;
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const cells & get_cell_voltages() const { return get_cell_voltages(AP_BATT_PRIMARY_INSTANCE); }
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const cells & get_cell_voltages(const uint8_t instance) const;
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// temperature
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bool get_temperature(float &temperature) const { return get_temperature(temperature, AP_BATT_PRIMARY_INSTANCE); }
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bool get_temperature(float &temperature, const uint8_t instance) const;
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// cycle count
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bool get_cycle_count(uint8_t instance, uint16_t &cycles) const;
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// get battery resistance estimate in ohms
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float get_resistance() const { return get_resistance(AP_BATT_PRIMARY_INSTANCE); }
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float get_resistance(uint8_t instance) const { return state[instance].resistance; }
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// returns false if we fail arming checks, in which case the buffer will be populated with a failure message
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bool arming_checks(size_t buflen, char *buffer) const;
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// sends powering off mavlink broadcasts and sets notify flag
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void checkPoweringOff(void);
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// reset battery remaining percentage
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bool reset_remaining(uint16_t battery_mask, float percentage);
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static const struct AP_Param::GroupInfo var_info[];
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protected:
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/// parameters
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AP_BattMonitor_Params _params[AP_BATT_MONITOR_MAX_INSTANCES];
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private:
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static AP_BattMonitor *_singleton;
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BattMonitor_State state[AP_BATT_MONITOR_MAX_INSTANCES];
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AP_BattMonitor_Backend *drivers[AP_BATT_MONITOR_MAX_INSTANCES];
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uint32_t _log_battery_bit;
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uint8_t _num_instances; /// number of monitors
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void convert_params(void);
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/// returns the failsafe state of the battery
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BatteryFailsafe check_failsafe(const uint8_t instance);
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void check_failsafes(void); // checks all batteries failsafes
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battery_failsafe_handler_fn_t _battery_failsafe_handler_fn;
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const int8_t *_failsafe_priorities; // array of failsafe priorities, sorted highest to lowest priority, -1 indicates no more entries
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int8_t _highest_failsafe_priority; // highest selected failsafe action level (used to restrict what actions we move into)
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bool _has_triggered_failsafe; // true after a battery failsafe has been triggered for the first time
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};
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namespace AP {
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AP_BattMonitor &battery();
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};
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