i2c voltmeter

: USB hub foundHub 1-0: 1. 0: 2 ports DetectedMice: PS/2 mouse device common for all miceS3c24xx RTC, (c) maid ElectronicsS3c2410-i2c s3c2410-i2c: slave address 0x10S3c2410-i2c s3c2410-i2c: Bus frequency set to 390 kHzS3c2410-i2c s3c2410-

data (u0thr, u0rbr );Check the serial port status or wait for the serial port to be interrupted (u0lsr ). 21. Basic I2C operationsAnswer: The basic operation method of the I2C host is as follows:Set I2C pin connection;Set I2C clock rate (i2sclh, i2scll );Set as host, and send the start signal (i2en, Stas, and AA are 0

disk drives can work in parallel to improve the data transmission rate; thirdly, the verification technology improves the reliability: if one hard disk in the array is damaged, the original data on the damaged disk can be restored using other disks without affecting the normal operation of the system, the damaged hard disk (that is, the hot swapping function) can be replaced in the live state. The array controller automatically writes the restructured data to the new disk, or write a hot backup

" 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-i2c s3c2440-

Interrupt. Otherwise, the External Interrupt can only be reflected in the extint register;To enable the device to enter the power-down mode and wake up through external interruptions, the software should correctly set the pin's external interrupt function before entering the power-down mode. 20. Basic uart0 operationsSet I/O to connect to uart0;Set the serial port baud rate (u0dlm, u0dll );Set the serial port working mode (u0lcr, u0fcr );Send or receive data (u0thr, u0rbr );Check the serial por

information. To load everything that is needed, add this to/etc/modules: # ---- Cut here ----# I2C adapter drivers# Modprobe unknown adapter NVIDIA i2c adapter# Modprobe unknown adapter NVIDIA i2c adapter# Modprobe unknown adapter NVIDIA i2c adapterI2c-i801# Chip drivers# No driver for Winbond W83L785R/G yetLm85# ----

The functions associated with the I²C subsystem that are first executed when the Linux kernel is booted should be the I2c_init () function in the driver/i2c/i2c-core.c file. 1 static int __init i2c_init (void " 2 { 5 retval = Bus_register (i2c_bus_type); 9 I2c_adapter_compat_class = Class_compat_register ( " i2c-adapter " 15 retval = i2c_add_dri

Email: wei7758@126.com Blog: http://blog.csdn.net/yinwei520 Author: yww Time: 2011-8-22 I. First, establish such a global concept: Position and work of sensor in Android system architecture. The diagram is as follows: From the diagram above, we can see that in Android, sensor is divided into four layers: Driver layer (sensor driver), Hardware Abstraction Layer (native), middle layer (framework), and application layer (Java ). The hardware abstraction layer and the intermediate layer can be combi

Steps:(1) first, mem3280 is an I2C device, so the first step is to check the chip spec and determine its I2C address (0x30)(2) After the address is determined, add I2C device information in the kernel/ARCH/ARM/mach-vc0882/board-vortex.c file:1212 static struct i2c_board_info i2c_devs1 [] = {1213 # ifdef config_sensor_ssz03041214 {i2c_board_info ("ssz0304-sensor",

. Under the shift pulse of the main device, the data is transmitted by bit, with the highest position in front and the lowest position in the back, full Duplex Communication.If you use a general IO port to simulate the SPI bus, you must have an output port (SDO), one input port (SDI), and the other port depends on the type of the implemented device, if you want to implement a Master/Slave Device, You need to input the output port. If you want to implement only the master device, you need to outp

)0.000 0.000:0.000 0.000: I2C: ready0.000 0.000: DRAM: 256 MB0.000 0.000: MY AMD Flash: 16 MB0.060 0.060: In: serial0.060 0.000: Out: serial0.060 0.000: Err: serial0.070 0.010: RM Clock:- 297MHz DDR Clock:- 162MHz1.071 1.001: Hit any key to stop autoboot: 01.351 0.280: # Booting image at 80007fc0 ...1.351 0.000: Verifying Checksum ...1.502 0.151: OK1.502 0.000: OK1.502 0.000: ## Loading Ramdisk Image at 80900000 ...1.502 0.000: Verif

Summary of debugging process and method of camera driver Based on the previous debugging of the camera driver, I have summarized some minor experiences: 1. Check whether the camera circuit connection is correct based on the circuit diagram; 2. Use A multimeter to measure the power supply pin of camera and check whether the power supply of camera is normal.ProgramFor power control; 3. Check the spec document of camera and check whether the pin triggering of pwdn and reset is normal and whet

stream of any size. There is no need to include data types in such a data structure, and here are some basic data that can be expressed in a DTS file: 　　 The text string (containing the ' I ' Terminator) is expressed in double quotes: String-property = "a string"; Cells (32-bit unsigned integer) is indicated by angle brackets: Cell-property = Binary data is represented by square brackets: Binary-property = [0x01 0x23 0x45 0x67]; The combination of different types of data is also possible, b

CPU? At present, the basic communication interface used in capacitive touch IC has three kinds: IIC, UART, SPI, at present generally only use IIC interface, the main interface pins are: VDD, GND, SCL, SDA, INT, RESET, Vddio. definition Description Vdd Touch IC Power port, for TP power supply, generally for 3.3v/2.8v GND Ground wire for Touch ICS Scl I2C communication Interface Clock Lin

After understanding the datasheet, don't rush to write code, you should first do is to give you will write the driver design a framework. So what should the framework be based on? Concrete how to build it. General, from USB drive to I2C Drive, from SPI Drive to serial drive, from PCI driver to DMA driver, and so on, no matter what type of driver, it always has one or several basic fixed routines for you to choose from. If you're going to write a touch

Hello everyone, this is the use of a blog, this article is the ATSHA204A encryption chip configuration, mentioned above, atsha204a encryption chip internal ROM three areas, one is Config zone, one is slot zone, there is an OTP zone, This article not only explains Config zone configuration, but also explains the slot and OTP area configuration method, and unifies the official library to demonstrate the code.First of all, the communication interface in this paper use the