ale_axp209 v0.2.0 AleAXP209
This module helps communicating with the AXP209 PMIC. This Power Management IC is mounted on the C.H.I.P. embedded computers. Make sure you start this Module as an Application to make it work. It will also monitor the state of the PMIC in background and allows to register for changes (not yet implemented!).
Changes in the power state are reported to Logger
.
Summary
Functions
Reads the current charge current (current going into the battery) in mA
Reads the current discharge current (current comming out of the battery) in mA
Reads a pair of registers and returns the content as number. It uses 8 bits from the first register as MSB and the last 4 bits from the next register. This encoding is often used on this PMIC. Value returned as a number
Reads a register and returns the content as number
Returns a map describing the state of the power system. The result is a map like this
Sets the current input limit - how much power we’re allowed to take from USB
Functions
Reads a pair of registers and returns the content as number. It uses 8 bits from the first register as MSB and the last 4 bits from the next register. This encoding is often used on this PMIC. Value returned as a number.
Returns a map describing the state of the power system. The result is a map like this:
%{
battery: true, # Battery is connected
battery_voltage: 4161, # Battery voltage in mV
charging: false, # Not charging
over_temp: false, # Temperature of PMIC is good
usb_power: true # USB Power is connected
}