i2c voltmeter

Linux View machine temperatureFirst, install the Lm_sensors[Email protected]_exercise ~]# yum-y Install lm_sensorsSecond, the configuration[Email protected]_exercise ~]# Sensors-detectWant to scan for them? This is totally safe. (yes/no): YESDoes want to scan for Super I/O sensors? (yes/no): YESThis is normally safe. Does want to scan for IPMI interfaces? (yes/no): YESDoes want to scan the ISA I/O ports? (yes/no): YESDoes want to probe the I2c/smbus a

demo: Drive DEMO:\KERNEL\DRIVERS\INPUT\TOUCHSCREEN\FT5X06_TS.C \kernel\drivers\input\touchscreen\ft5x06_ts.h DTSi file: \kernel\arch\arm\boot\dts\qcom\msm8x16-qrd.dtsi 2. Explanation of DTSi i2c@f9923000{//TP connected to the I²C registerfocaltech@38{compatible = "focaltech,5x06"; The content of the match is driven by i²cReg = Interrupt-parent = Interrupts = Vdd-supply = Vcc_i2c-supply = Focaltech,name = "ft6x06"; TP typeFocaltech,family-id = Focalte

Abstract:A high-resolution digital camera based on USB2.0 protocol is introduced. The basic hardware circuit and software design method of high-resolution digital camera are presented by using CMOS image sensor ob9620 and USB controller CY7C68013. Keywords: USB2.0; I2C; camera; ov9620 1 Overview Currently, both bus interfaces (USB and IEEE 1394 interfaces) that can transmit high-quality video signals support plug-and-play, and are easy to expand and

In the Linux drive, the following members are mainly included in the I²C system:I2C adapter 即I2C适配器I2C driver 某个I2C设备的设备驱动，可以以driver理解。I2C client 某个I2C设备的设备声明，可以以device理解。I²C Adapteris a CPU integrated or external I²C adapter, used to control a variety of i²c slave devices,

This article was reproduced from: http://blog.csdn.net/airk000/article/details/21345457In the Linux drive, the following members are mainly included in the I²C system:I2C adapter 即I2C适配器I2C driver 某个I2C设备的设备驱动，可以以driver理解。I2C client 某个I2C设备的设备声明，可以以device理解。I²C Adapteris a

56 57 58 1 2 3 4 5 6 7 8 9 10 11 12-13--14 15---16 17--18 19 20 21 22 23 24-25 26 27 28 0 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57-58 Basic ConstructionThe structure that is surrounded by {} is called a node, and the very beginning of/{} in DTS is called the root node. The standard structure of a node is xxx@yyy{...},xxx is the name of the node, YYY is not required, its value is the address of the node (register address or other address), such as i2c1:

Tags: future orm write form details har csdn bit turnhttp://blog.csdn.net/airk000/article/details/21345457In the Linux drive, the following members are mainly included in the I²C system:I2C adapter 即I2C适配器I2C driver 某个I2C设备的设备驱动，可以以driver理解。I2C client 某个I2C设备的设备声明，可以以device

Article Title: Linux CPU Temperature Monitoring. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. Install the test system: Hardware: ordinary PC, Software: redhat linux as 4 2.6. 9, install the built-in lm_sensors-2.8.7-2.i386 You can also download it from [url] http://www.edgedesign.us/about/lm_sensors#/url # This software can collect the system temperature i

.mail.qq.com/cgi-bin/viewfile?f= 66a91c2d59b9219710e547f38e426ebfd38a0c8fc2627b6f45b03ecc94add0144e839cf8040f6896da361e13e40d2c5b2547d636eccfc8dd11ada1620 b59e2c1026d7cdd2651d323287f5ea9f77a7153bd9d1c41c4d5846fbb91403a33b66b67mailid=zc3607-ohqs8wats~ 6lbh9kialjf55sid=ga_ggxigwj3rfw5bnet=1351846154 "style=" border:none;vertical-align:middle; "alt=" viewfile?f=66a91c2d59b9219710e547f38e426 "/> Figure 2.12 I²c driver Framework i2c

that FT5X06 can work in both the SPI interface mode and I2C interface mode, whether working in SPI or I2C, in terms of the hardware interface design, the following control ports need to be connected. As shown in: 1): The INT pin, which is a mid-range signal. It is used to notify the HOST terminal that FT5X06 is ready for reading. 2): WAKE pin: this function is mainly used to convert FT5X06 from sleep to w

the free charge. It is represented by the symbol "U. (2) Power Supply: the power supply generates voltage at both ends of the conductor. It is a device that provides voltage. It converts other forms of energy into electric energy, however, energy is converted into other forms of energy. (3) units: Common units of international units-volt (v) include kilovolt (Kv), millivolt (MV), and microvolt (μV ). (4) several voltage values: 1. the voltage of a Dry Battery u = 1.5 V 2. the voltage of each le

: "bootloader" failed: "kernel_zimage" 0x00200000-0x02000000: "rootfs" failed: "user" usbmon: debugfs is not availables3c2410-ohci s3c2410-ohci: s3c24xx OHCIs3c2410-ohci s3c2410-ohci: new USB bus registered, assigned bus number 1s3c2410-ohci s3c2410-ohci: IRQ 42, Io Mem 0x49000000usb usb1: configuration #1 chosen from 1 choicehub 1-0:1. 0: USB hub foundhub 1-0: 1. 0: 2 ports detectedmice: PS/2 mouse device common for all mices3c2440-i2c s3c2440-

Author: Liu Hongtao,Hua Qing vision embedded college lecturer. Note:Understanding the camera driver requires four prerequisites:1) The basic working principle of the camera and the working principle of the camera controller integrated with s5pc1002) working principles of platform_device and platform_driver3) Linux kernel v4l2 driver architecture4) Linux kernel I2C driver architecture 1. How cameras work Ov9650/9655 is an image sensor chip with a CMOS

Character device driver framework 1. test functions 1) open (), enable character devices; 2) IOCTL (), device with Operation characters; 3) Close (), close the character device; 2. character device functions 1) smartchip _ Init (), module loading; (insmod smartchip. Ko) A. register_chrdev_region (). Apply for the device number; B. alloc_chrdev_region (): Request the device number; C. smartchip_setup_cdev (); A. cdev_init (): Initialize the cdev member; B. cdev_add (): registers character devices

subway? You've been tracked by hackers! The three researchers at Nanjing University's computer Technology and Technology department said that using the accelerometer data in the smartphone could track the whereabouts of the passengers of the CRC, up to 92% accuracy. This is partly due to the fact that data accessing the Android platform does not require permission or consent. The results of this study are very threatening, in big cities, Subway is the most popular way to travel, w

how to debug camera on Qualcomm android from the perspective of the underlying driver, the architecture and Principles of the Qualcomm camera platform are not described too much.I. PreparationsFrom the project perspective, the software must be ready before the hardware (board) ready. From the perspective of the underlying driver, the software part can be divided into two parts: one is related to the Qualcomm platform, and the other is the sensor part, the common practice is to port the sensor-r

The first difference is of course the name:SPI (serial peripheral interface: serial peripheral interface );I2C (Inter IC Bus)UART (Universal Asynchronous Receiver Transmitter: Universal asynchronous transceiver)Second, the difference lies in the electrical signal line:The SPI bus consists of three signal lines: sclk, SDO, and SDI ). The SPI bus allows multiple SPI devices to connect to each other. The SPI device that provides the SPI serial clock is t

MSM8909 + Android5.1.1 keyboard driver --- sn7326 Introduction 1. Sn7326 Overview SN7326 is a keyboard extension chip with intelligent self-scanning, supporting up to 8x8 buttons. The press/release button action is encoded into a byte of data and stored in the key event register. The master controller can read the key event register through the I2C serial bus. SN7326 has the dejitter function. When any key is pressed, the interrupt output pin is set t

[Tutorial] Linux I2C device driver-Linux general technology-Linux programming and kernel information. The following is a detailed description. My ARM platform is Cortex A9. The MSP430 microcontroller communicates with the ARM-core I2C bus. the ARM runs on a Linux system and the Linux kernel has an I2C bus driver. Therefore, in addition to the MSP430 program, I a

In the Linux drive, the following members are mainly included in the I²C system:I2C adapter 即I2C适配器I2C driver 某个I2C设备的设备驱动，可以以driver理解。I2C client 某个I2C设备的设备声明，可以以device理解。I²C Adapteris a CPU integrated or external I²C adapter, used to control a variety of i²c slave devices,