AXP202Gpio.hpp File Reference

@license MIT License More...

#include "../../PmicGpioBase.hpp"
#include "AXP202Core.hpp"

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Classes
class	AXP202Gpio
	AXP202 GPIO pin control. More...

Detailed Description

@license MIT License

Copyright (c) 2026 lewis he

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Author

Lewis He (lewis.nosp@m.he@o.nosp@m.utloo.nosp@m.k.co.nosp@m.m)

Date

2026-04-29

AXP202 GPIO Interface

Controls up to four GPIO pins (GPIO0-GPIO3) on the AXP202 PMIC. GPIO0 can additionally be configured as an LDO output (LDOio) with 1800-3300mV output in 100mV steps via register 0x91. Each GPIO supports direction (input/output), drive strength, digital read, and digital write operations.

Pin Mapping

• GPIO0: Also functions as LDOio voltage output (reg 0x91)
• GPIO1: General purpose I/O
• GPIO2: General purpose I/O
• GPIO3: NMOS open-drain or input only (REG 95H)

Note

LDOio voltage control is handled through AXP202Channel, not this class.

Definition in file AXP202Gpio.hpp.