GPIO

This section introduces the General-Purpose Input-Output (GPIO) APIs including terms and acronyms, supported features, software architecture details on how to use this driver, GPIO groups, enums and functions. More...

Overview

This section introduces the General-Purpose Input-Output (GPIO) APIs including terms and acronyms, supported features, software architecture details on how to use this driver, GPIO groups, enums and functions.

Terms and acronyms

Terms	Details
GPIO	General-Purpose Inputs-Outputs.

Supported Features

The GPIO has been designed to set GPIO input/output signal and pinmux function. For more details, please refer to the GPIO datasheet.

• Support pull-up and pull-down with different resistance functions.
  
• Support output-high and output-low functions.
  
• Support pinmux mode functions.
  

How to Use This Driver

• SW Architecture:
  See Overview of M-HAL SW Architecture for the details of SW architecture.

  This section describes the definition of APIs and provides an example on freeRTos to show how to use these APIs to develop an OS-related GPIO driver.
  

• The OS-HAL freeRTos driver sample code is as follows:
  freeRTos GPIO sample code on github

Modules
	Define
	This section introduces the Macro definition which is used as GPIO M-HAL's API error return type.
	Enum
	This section introduces the enumerations that GPIO should configure when calling GPIO APIs.
	Function
	This section provides Fixed APIs(defined as Common Interface) to fully control the MediaTek GPIO HW.
	Struct
	This section introduces the structure used by GPIO OS-HAL/M-HAL/HDL.