These pins can be physically connected to peripheral devices. In addition, this driver cooperates with GpioClx to handle interrupt requests from GPIO pins that are configured as interrupt inputs.Ī GPIO controller device has some number of GPIO pins. The GPIO controller driver cooperates with GpioClx to handle I/O requests for groups of GPIO pins that are configured as data inputs and data outputs. A GPIO controller driver is a KMDF driver that manages all hardware-specific operations for a GPIO controller. Hardware vendors supply drivers to control their GPIO controllers. Drivers for Peripheral Devices That Use GPIO Pins.This overview discusses the following topics: GpioClx, which is a system-supplied extension to the kernel-mode driver framework (KMDF), performs processing tasks that are common to members of the GPIO device class. Additionally, GpioClx provides driver support for peripheral devices that connect to GPIO pins. Starting with Windows 8, the GPIO framework extension (GpioClx) simplifies the task of writing a driver for a GPIO controller device.
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