The RAVPower RP-WD009 has a communication interface to the power management IC via the MT7628 I2C bus.
The power management controller is located at address 0x0a.
Reads the status of a requested Shutdown. BIT 2 indicates low temperature - Code isn't clear on this (I do not want to freeze my device) BIT 3 indivates high temperature BIT 5 indicates low voltage BIT 6 indicates charging BIT 7 indicates a requested shutdown.
Powers down MCU and CPU. Only works when called after or prior to Power LED (0x61). Returns 0x0
Does nothing (?)
Reads the Battery Capacity. Returns Values 0 - 100 as unsigned 8-bit integer.
Will enable an interrupt (change to HIGH) on GPIO39. Indicates the Power button is pressed for 3 seconds. Returns 0x42.
Returns 0x43
Resets the CPU.
Blinks the Power LED. Return 0x0