#-------------------------------------------------------------
 - Generic driver for AXP192 - solidified
 -------------------------------------------------------------#
class AXP192 : I2C_Driver
  def init()
    super(self, I2C_Driver).init("AXP192", 0x34)
  end

  # Return True = Battery Exist
  def battery_present()
    if self.wire.read(self.addr, 0x01, 1) & 0x20 return true
    else return false
    end
  end

  # Input Power Status ???
  def get_input_power_status()
    return self.wire.read(self.addr, 0x00, 1)
  end

  # Battery Charging Status
  def get_battery_chargin_status()
    return self.wire.read(self.addr, 0x01, 1)
  end

  # AXP chip temperature in °C
  def get_temp()
    return self.read12(0x5E) * 0.1 - 144.7
  end

  def get_bat_power()
    return self.read24(0x70) * 0.00055
  end

  def get_bat_voltage()
    return self.read12(0x78) * 0.0011
  end
  def get_bat_current()
    return (self.read13(0x7A) - self.read13(0x7C)) * 0.5
  end
  def get_bat_charge_current()
    return self.read13(0x7A) * 0.5
  end
  def get_aps_voltage()
    return self.read12(0x7E) * 0.0014
  end
  def get_vbus_voltage()
    return self.read12(0x5A) * 0.0017
  end
  def get_vbus_current()
    return self.read12(0x5C) * 0.375
  end

  # set LDO voltage
  #   ldo: 2/3
  #   voltage: (mV) 1800mV - 3300mV in 100mV steps
  def set_ldo_voltage(ldo, voltage)
    if   voltage > 3300   voltage = 15
    else voltage = (voltage / 100) - 18
    end

    if ldo == 2
      self.write8(0x28, self.read8(0x28) & 0x0F | ((voltage & 0x0F) << 4))
    end
    if ldo == 3
      self.write8(0x28, self.read8(0x28) & 0xF0 | (voltage & 0x0F))
    end
  end

  # set DCDC enable, 1/2/3
  def set_dcdc_enable(dcdc, state)
    if dcdc == 1  self.write_bit(0x12, 0, state) end
    if dcdc == 2  self.write_bit(0x12, 4, state) end
    if dcdc == 3  self.write_bit(0x12, 1, state) end
  end

  # set LDO enable, 2/3 (LDO 1 is always on)
  def set_ldo_enable(ldo, state)
    if ldo == 2   self.write_bit(0x12, 2, state) end
    if ldo == 3   self.write_bit(0x12, 3, state) end
  end

  # set GPIO output state 0/1/2 and 3/4
  def write_gpio(gpio, state)
    if   gpio >= 0 && gpio <= 2
      self.write_bit(0x94, gpio, state)
    elif gpio >= 3 && gpio <= 4
      self.write_bit(0x96, gpio - 3, state)
    end
  end

  # Set voltage on DC-DC1/2/3
  #   dcdc: 1/2/3 (warning some C libs start at 0)
  #   voltage: 
  def set_dc_voltage(dcdc, voltage)
    if dcdc < 1 || dcdc > 3 return end
    var v
    if voltage < 700    v = 0
    elif voltage > 3500 v = 112
    elif dcdc == 2 && voltage > 2275  v = 63  # dcdc2 is limited to 2.275V
    else v = (voltage - 700) / 25
    end

    var            addr = 0x26
    if   dcdc == 3 addr = 0x27
    elif dcdc == 2 addr = 0x23
    end

    self.write8(addr, self.read8(addr) & 0x80 | (v & 0x7F))
  end

  # Set charging current
  # 100mA = 0
  # 190mA = 1
  # 280mA = 2
  # 360mA = 3
  # 450mA = 4
  # 550mA = 5
  # 630mA = 6
  # 700mA = 7
  # 780mA = 8
  # 880mA = 9
  # 960mA = 10
  # 1000mA = 11
  # 1080mA = 12
  # 1160mA = 13
  # 1240mA = 14
  # 1320mA = 15
  def set_chg_current(current_code)
    self.write8(0x33, self.read8(0x33) & 0xF0 | (current_code & 0x0F))
  end

  # // Low Volt Level 1, when APS Volt Output < 3.4496 V
  # // Low Volt Level 2, when APS Volt Output < 3.3992 V, then this flag is SET (0x01)
  # // Flag will reset once battery volt is charged above Low Volt Level 1
  # // Note: now AXP192 have the Shutdown Voltage of 3.0V (B100) Def in REG 31H
  def get_warning_level()
    return self.read12(0x47) & 1
  end

  #- trigger a read every second -#
  # def every_second()
  #   if !self.wire return nil end  #- exit if not initialized -#
  # end

  #- display sensor value in the web UI -#
  def web_sensor()
    if !self.wire return nil end  #- exit if not initialized -#
    import string
    var msg = string.format(
             "{s}VBus Voltage{m}%.3f V{e}"..
             "{s}VBus Current{m}%.1f mA{e}"..
             "{s}Batt Voltage{m}%.3f V{e}"..
             "{s}Batt Current{m}%.1f mA{e}"..
             #"{s}Batt Power{m}%.3f{e}"..
             "{s}Temp AXP{m}%.1f °C{e}",
             self.get_vbus_voltage(), self.get_vbus_voltage(),
             self.get_bat_voltage(), self.get_bat_current(),
             #self.get_bat_power(),
             self.get_temp()
            )
    tasmota.web_send_decimal(msg)
  end

  #- add sensor value to teleperiod -#
  def json_append()
    if !self.wire return nil end  #- exit if not initialized -#
    # import string
    # var ax = int(self.accel[0] * 1000)
    # var ay = int(self.accel[1] * 1000)
    # var az = int(self.accel[2] * 1000)
    # var msg = string.format(",\"MPU6886\":{\"AX\":%i,\"AY\":%i,\"AZ\":%i,\"GX\":%i,\"GY\":%i,\"GZ\":%i}",
    #           ax, ay, az, self.gyro[0], self.gyro[1], self.gyro[2])
    # tasmota.response_append(msg)
  end
end