gpio sensors

I. Overview Through the SYSFS mode control GPIO, first access to the/sys/class/gpio directory, write GPIO number to the export file, so that the GPIO operating interface from the kernel space exposure to user space, GPIO operating interface, including direction and value And

Transferred from: http://blog.csdn.net/mirkerson/article/details/8464290An overviewThe Gpio in the Linux kernel is the simplest, most common resource (and interrupt, Dma,timer) driver, the application is able to use the corresponding interface using Gpio,gpio to use the integer ID between 0~max_int, can not use negative numbers,

Through the Sysfs control Gpio, first access to the/sys/class/gpio directory, the export file to write the Gpio number, so that the Gpio operation interface from the kernel space exposed to the user space, Gpio operating interface including direction and value, etc. The dire

Raspberry Pi advanced GPIO library, wiringpi2 for python Use note (3) GPIO operations, gpiowiringpi2 The core function of the GPIO library is to operate GPIO. GPIO is the "general input/output" interface, such as lighting up an LED or relay, or using iic spi 1-wire and other

Gpio Library core function, of course, is the operation of Gpio, Gpio is the "general input/Output" interface, such as lighting a LED, relays, or through the IIC SPI 1-wire and other protocols, read, write data, this is the use of Gpio, can say no gpio, Raspberry Pi can only

IHS expects that strong consumer demand for a wide range of wearable devices will increase sensor shipments in wearable devices, which is expected to grow seven times times in 2013-2019 years, with wearable sensors shipping at 67 million in 2013 and an estimated 85 million in 2014, Next year can grow by up to 1.75 One, 2019 shipments are estimated to be 466 million. And because the number of sensors in each

Implement your own RPi. GPIO (1)-Python C Extension, rpi. gpio-python Raspberry Pi has a Python module of RPi. GPIO. After import, you can directly use Python to operate the GPIO hardware module of the ARM chip. I think this is very interesting, so I want to implement this module on my own DM8148 platform. DM8148 is a

[Uboot] uboot process series :[Project X] tiny210 (s5pv210) power-on START process (BL0-BL2)[Project X] tiny210 (s5pv210) load code from storage device to DDR[Uboot] (chapter I) uboot process--Overview[Uboot] (chapter II) uboot process--UBOOT-SPL compilation process[Uboot] (chapter III) uboot process--UBOOT-SPL code flow[Uboot] (fourth chapter) Uboot process--uboot compilation process[Uboot] (fifth) Uboot process--uboot START process[Uboot] (Foreign article) Global_data Introduction[Uboot] (fore

From http://www.cnblogs.com/xiaobo-Linux/p/8969324.html command line control LED lightecho >/sys/class/gpio/export Write outputcd/sys/class/gpio/gpio12/Enter this portThe main 2 files Direction/valueDirection control output echo out > Direction/control input echo in > directionValue control high and low level 1, 0 low echo 1 > Value lit/echo 0 > value offRead high and low level cat valueUse Python to light

Reprinted: Http://www.jqr8.com/thread-1403-1-1.html With the increasing intelligence of robots, whether the remote control robot, the interactive robot or the autonomous robot, it is necessary to use the sensor to perceive various parameters of itself and the external environment more and more, and then provide the data reference for the control and decision system to make the appropriate response. From imitating the function of human eyes, ears, nose, and hands, the

Reference: http://wikidroid.sinaapp.com/Guide/topics/sensors/sensors_overview 1. Sensor entry Since Apple released its first iPhone in 2007, sensors that seem to be tied to mobile phones have gradually become an important part of mobile phone hardware. If you have used iPhone, HTC Dream, HTC magic, and HTCHero and Other Android phones will find that by placing the phone either horizontally or vertically, th

an overview Linux kernel Gpio is the simplest, most commonly used resource (and interrupt, Dma,timer) driver, applications can use the corresponding interface Gpio,gpio use the integer ID between 0~max_int, can not use negative numbers, Gpio is closely related to the hardware system, but Linux has a framework for

of the teachings of the instructors who gave us the mobile phone posture. So I will use an iPhone 3. As a representative of the hero of beautiful women, the iPhone launched by the Fruit Company is the guide to the Design Trend of mobile phones. It is also a pioneer in the design spirit. From the light intensity sensor, proximity sensor, acceleration sensor, to the electronic compass, and then to the recently released gyroscope, of course, there are also sen