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Editor to share with you how to use Android to achieve boot charging icon and charging animation effects, I believe that most people do not know much about it, so share this article for your reference, I hope you can learn a lot after reading this article, let's learn about it!

First of all, the driver needs to get 2 power supply first.

Kernel\ msm-3.18\ drivers\ usb\ phy\ phy-msm-usb.c

Motg- > usb_psy.name = "usb"; motg- > usb_psy.type = POWER_SUPPLY_TYPE_USB;motg- > usb_psy.supplied_to = otg_pm_power_supplied_to;motg- > usb_psy.num_supplicants = ARRAY_SIZE (otg_pm_power_supplied_to); motg- > usb_psy.properties = otg_pm_power_props_usb;motg- > usb_psy.num_properties = ARRAY_SIZE (otg_pm_power_props_usb) Motg- > usb_psy.get_property = otg_power_get_property_usb;motg- > usb_psy.set_property = otg_power_set_property_usb;motg- > usb_psy.property_is_writeable = otg_power_property_is_writeable_usb;if (! msm_otg_register_power_supply (pdev, motg)) psy = & motg- > usb_psy

Kernel\ msm-3.18\ drivers\ power\ bq2570x\ bq2570x_charger.c

Usb_psy = power_supply_get_by_name ("usb"); static int bq2570x_psy_register (struct bq2570x * bq) {int ret; bq- > batt_psy.name = "dc_o2"; bq- > batt_psy.type = POWER_SUPPLY_TYPE_BATTERY; bq- > batt_psy.properties = bq2570x_charger_props; bq- > batt_psy.num_properties = ARRAY_SIZE (bq2570x_charger_props); bq- > batt_psy.get_property = bq2570x_charger_get_property Bq- > batt_psy.set_property = bq2570x_charger_set_property; bq- > batt_psy.external_power_changed = bq2570x_external_power_changed; bq- > batt_psy.property_is_writeable = bq2570x_charger_is_writeable; ret = power_supply_register (bq- > dev, & bq- > batt_psy); if (ret

Usb_psy, POWER_SUPPLY_TYPE_USB); ret = power_supply_set_online (bq- > usb_psy, true); power_supply_changed (bq- > usb_psy)

Start-up logic of charging animation: power supply of POWER_SUPPLY_TYPE_BATTERY reports charging status

(CHARGE_STATE_NOT_CHARGING,CHARGE_STATE_FASTCHARGE) bq- > charge_state = CHARGE_STATE_FASTCHARGE;power_supply_changed (& bq- > batt_psy)

Using dumpsys to analyze the current battery status

V2_PRO:/ # dumpsys batteryCurrent Battery Service state: AC powered: false USB powered: true Wireless powered: false Max charging current: 0 Max charging voltage: 0 Charge counter: 0 status: 2 health: 2 present: true level: 46 scale: 100 voltage: 7 temperature: 270 technology: Li-ion

As mentioned above, we mainly focus on 2 fields:

USB powered: true

Then the lightning icon should appear.

Status: 2

Then the charging animation should be started.

At the same time, we can also start the charging icon and charging animation by shell command.

Dumpsys battery set usb 1

The lightning icon should appear.

Dumpsys battery set status 2

The charging animation should be started.

Dumpsys battery set usb 0

The lightning icon disappears.

Dumpsys battery set status 4

Charging animation disappears

The above is all the content of this article "how to use Android to achieve boot charging icon and charging animation effect". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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