Power

Setup

• Create a power listener:

private final PowerListener powerListener = new PowerListener() {    @Override    public void onPowerUp(RESULT res, Peripheral peripheral) {        if (res == RESULT.OK) {            //Peripheral is on        } else {            //Peripehral power status is undefined        }    }
    @Override    public void onPowerDown(RESULT res, Peripheral peripheral) {        //Peripehral is off    }};

• Register the listener:

@Overrideprotected void onCreate(Bundle savedInstanceState) {    PowerManager.get().registerListener(powerListener);}

• Select a peripheral according to device and power it on:

if (OsHelper.isCone()) {    peripheral = ConePeripheral.FP_IB_COLOMBO_USB;    //Could be any other enum value corresponding to your device} else if (OsHelper.isIdPlatform()) {    peripheral = IdPlatformPeripheral.FINGERPRINT;    //Could be any other enum value corresponding to your device}
peripheral.on(context);//The the listener will be called with the result

• Power off when you are done:

peripheral.off(context);//The the listener will be called with the result

• Release resources:

@Overrideprotected void onDestroy() {    PowerManager.get().unregisterAll();    PowerManager.get().releaseResources();    super.onDestroy();}

More information

• On C-One, C-One² and their e-ID counterpart, you can use MASTER_ASKEY_CONE_GPIO to power off all devices at the same time.

• On C-One² and C-One² e-ID, you can use USB_HOST_ASKEY_CONE_GPIO.off(context) to force USB being device. This allows C-One² to be powered by USB. Please use CpcCore at version 1.8.16 for this.