ardupilot/libraries/AP_BattMonitor/AP_BattMonitor_SMBus.h

70 lines
2.4 KiB
C++

#pragma once
#include <AP_Common/AP_Common.h>
#include <AP_Param/AP_Param.h>
#include <AP_Math/AP_Math.h>
#include "AP_BattMonitor_Backend.h"
#include <utility>
#define AP_BATTMONITOR_SMBUS_BUS_INTERNAL 0
#define AP_BATTMONITOR_SMBUS_BUS_EXTERNAL 1
#define AP_BATTMONITOR_SMBUS_I2C_ADDR 0x0B
#define AP_BATTMONITOR_SMBUS_TIMEOUT_MICROS 5000000 // sensor becomes unhealthy if no successful readings for 5 seconds
class AP_BattMonitor_SMBus : public AP_BattMonitor_Backend
{
public:
/// Constructor
AP_BattMonitor_SMBus(AP_BattMonitor &mon,
AP_BattMonitor::BattMonitor_State &mon_state,
AP_HAL::OwnPtr<AP_HAL::I2CDevice> dev);
// virtual destructor to reduce compiler warnings
virtual ~AP_BattMonitor_SMBus() {}
// all smart batteries provide current and individual cell voltages
bool has_current() const override { return true; }
bool has_cell_voltages() const override { return true; }
protected:
void read(void) override;
// reads the pack full charge capacity
// returns true if the read was successful, or if we already knew the pack capacity
bool read_full_charge_capacity(void);
// reads the remaining capacity
// returns true if the read was succesful, which is only considered to be the
// we know the full charge capacity
bool read_remaining_capacity(void);
// reads the temperature word from the battery
// returns true if the read was successful
bool read_temp(void);
// reads the serial number if it's not already known
// returns true if the read was successful, or the number was already known
bool read_serial_number(void);
// read word from register
// returns true if read was successful, false if failed
bool read_word(uint8_t reg, uint16_t& data) const;
// get_PEC - calculate PEC for a read or write from the battery
// buff is the data that was read or will be written
uint8_t get_PEC(const uint8_t i2c_addr, uint8_t cmd, bool reading, const uint8_t buff[], uint8_t len) const;
AP_HAL::OwnPtr<AP_HAL::I2CDevice> _dev;
bool _pec_supported; // true if PEC is supported
int32_t _serial_number = -1; // battery serial number
uint16_t _full_charge_capacity; // full charge capacity, used to stash the value before setting the parameter
};
// include specific implementations
#include "AP_BattMonitor_SMBus_Solo.h"
#include "AP_BattMonitor_SMBus_Maxell.h"