adafruit gpio

Uboot's Gpio is quite simple, it is a three-layer structure. Respectively: 1, the top layer interface layer, which only defines a common interface, is not responsible for implementation, implementation is based on specific chip to achieve. 2, the middle interface implementation layer, with the specific board of the GPIO to achieve the top layer interface 3, the underlying specific chip

Understanding the stm32f0 ' s GPIOThis was the first part of the GPIO tutorial for the stm32f0discovery.The tutorial would include the following topics: Understanding the Structure of the GPIO registers on the STM32F0 microcontroller Understanding how to access the registers Setting and clearing output pins The stm32f051 microcontroller on the Stm32f0discovery boardHave 5 general purpo

diagram and cabling method. These hardware-related content cannot be bypassed by BSP engineers during driver debugging. Thinking about it, because it involves too much complexity and limited capabilities, I still feel that from the perspective of BSP, first of all, I would like to briefly introduce the basic background knowledge, understand the meaning of the driver, then we started to optimize the transplantation driver. In this practical way, we slowly started to look at the driver that the m

Tags: development module compilation interval ASE driver development statically compiled man linkLinux Gpio keyboard Driver development record _omapl138Linux basic configuration is complete, these days began to start the development of Linux, from a simple keyboard driver, and gradually understand the development-driven process. Look at the Linux3.3 kernel file under the driver directory, click on the C file inside, feel that the underlying Linux driv

http://www.360doc.com/content/14/1227/18/14351252_436191812.shtmlDirectoryHidden 1 Introduction 2 use 2.1 Input and output 2.2 Re-use Brief introductionGPIO, full name general-purpose input/output (Universal input and output), is a general purpose pin that can be dynamically configured and controlled during software operation.RK3288 has 9 sets of GPIO Bank:gpio0,gpio1, ..., GPIO8. Each group is also A0~a7, B0~b

0 PrefaceThis article describes how to control the Raspberry Pi gpio port through the file IO sysfs. Control gpio through sysfs, first access the/sys/class/gpio directory, write the gpio number to the export file, so that the operation interface of this gpio is exposed from

Recently started Orangepi Zero piece, the program needs to use the board's own LED lights, on-line a check, have to say that OPI support and Raspberry Pi can not compare. Oneself groped for a moment, realizes the simple Gpio control method, the author's Zero installs is the Armbian system, uses the python to write a read and write registers the simple module, through this module, can realize to the Gpio con

The previous article recorded the Raspberry Pi's own Gpio driver (http://www.cnblogs.com/umbrellary/p/5164148.html), in the bcm2708_ GPIO.C realizes the Gpio drive, but also realizes the drive of the interrupt controller, this paper records the implementation of the driver in the BCM2708_GPIO.C.A bcm2708_gpio_irq_init interrupt initialization function establishes a GPIO