g15 driver

In the Linux device driver first: Introduction to the device driver briefly describes the character driver, this article briefly describes how to write a simple character device driver. This article draws on the source code in the LDD, realizes a hardware device-independent character device

Part of this article refers to the blog from Droidphone (http://blog.csdn.net/droidphone/article/details/6271122), about Alsa writing a very good article, just a few examples. This article is a combination of examples to analyze the ALSA audio driver.Development environment: ubuntu10.04Target board: linux-2.6.37 (view Linux kernel information via command uname-r)Compiler: arm-none-linux-gnueabi-(None on behalf of compiler creator, such as: FSL for Freescale, the kernel to talk about Eabi,oabi, i

Access to the character device is performed through the device name in the file system. Those device names are simply nodes that are called file system trees, and they are typically located in the/dev directory. Device files for character device drivers can be identified by ' C ' in the first column of the ls-l command output. Block devices are also located in/dev, identified by the character ' B 'CRW-RW----1 root root 253, 0 2013-09-11 20:33 Usbmon0CRW-RW----1 root root 253, 1 2013-09-11 20:33

In the Linux device driver first: Introduction to the device driver briefly describes the character driver, this article briefly describes how to write a simple character device driver. This article draws on the source code in the LDD, realizes a hardware device-independent character device

Linux under the I2C-driven loading process, divided into I2C equipment layer, I2C adapter layer and I2C core layer The I2C device driver layer is the drive we write for a particular I2C device, and the following is the I2C-driven registration process I understand. In the I2C device driver we write, we call I2c_add_driver () to start I2C device-driven registration, which calls I2c_register_driver Complete a

From: http://blog.sina.com.cn/s/blog_62714d6a0100m3ox.html Driver Model diagram: Driver Model Comparison: WDM ----- Windows Driver Model (Windows Device Driver Model) PC Driver Model ------There are at least two drivers: 1. The function

1. Driver test of onboard buzzerI have a BSP, jiuding BSP, which has a buzzer driver, we first test it well. When we get a BSP, if we want to do or transplant the driver of the buzzer, first determine the next coreThere is no buzzer driver, we can use Sourceinsight to put the kernel in, search buzzer this file, see if

In the Linux device driver first: Introduction to the device driver briefly describes the character driver, this article briefly describes how to write a simple character device driver. This article draws on the source code in the LDD, realizes a hardware device-independent character device

Linux Device Driver Article 3: How to Write a simple character device driver ?, Linux Article 3 In the first article on linux Device Drivers: the device drivers briefly introduce character drivers. This article briefly introduces how to write a simple character device driver. This article draws on the source code in LDD to implement a character device

Framebuffer is a display device inside Linux. How to operate the LCD at the bottom of the drive to achieve graphical display.1. What is Framebuffer?(1) First consider how we operate the LCD in bare metal.The SOC has an LCD controller, an LCD driver outside the SOC, an LCD driver connected to the LCD screen, a CPU inside the SOC, and an external DDR memory. These devices are all part of the LCD display.What

first, the Linux system divides the device into 3 categories: Character device, block device, network device. Using drivers:1, character device : Refers to a byte can only one byte read and write devices, can not randomly read the device memory of a certain data, read data need to follow the data. The character device is a stream-oriented device, and the common character devices are mouse, keyboard, serial port, console and led device.2, block device : Refers to the device can be read from any l

Wince6.0 driver transplantation (driver model changes, and compared with wince5.0) from: http://chenyq2008.spaces.live.com/blog/cns! F74254ac8d0d8d50! 205. Entry Chen Yongqiang [Device Manager] The device management code is in the private \ winceos \ coreos \ device \ directory. the wince6.0 on the right omitted Inc, irom, nopmif, and pmif4 directories. these directories are header files, IO resource manage

1. Overviewin general, the 2.6 kernel has been initialized and mounted with a platform bus in the Sysfs file system. So when we write the platform model driver, we need to do two jobs:1: Implement platform Drive 2: Implement PLATForm Device, however There are many other small tasks that need to be implemented in the process of implementing these two tasks, as described later. The core architecture of the platform model-driven implementation process

Transplantation of USB Wifi module RT3070 driver and wifirt3070 driver on the tianembedded E9 Platform Due to project work requirements, point-to-point and multi-point transmission of wifi must be implemented on the embedded E9 platform. Wifi module chip: Reiling 3070 Chip Embedded platform: E9 (ARM) Cross-compilation environment: arm-none-linux-gnueabi 1. First download the

Now that we know the protocol, we can start to look at the SPI driver code in Linux kenerl. There are many struct in the code, so let's take a look at the main struct first, in this way, we can better understand the driver. Mainly include/Linux/SPI. h The first is the communication interface between the SPI host and the slave, that is, the SPI bus, extern struct bus_type spi_bus_type; Bus_type is defined

, HDREADON3850 is a video card that is expected by a DIY player following Readon9550. "A rice n rice to pk!88gt and 3850 to see who more cost-effective" after the introduction of the new graphics card manufacturers must introduce a new driver with it. For ATI-driven comments, both praise and derogatory, can be regarded as mixed. is the ATI drive really so hard to tame? Not also, see the author how to train ATI graphics

[Microsoft] [ODBC driver manager] no data source name is found and default driver error information is not specified: Source: Microsoft ole db Provider for ODBC Drivers Description: [Microsoft] [ODBC driver manager] no data source name found and default driver not specified Conn code: function conn(){ try {

Develop an android driver that can count words (1) 5. Specify Driver-related information Although it is not necessary to specify this information, a complete Linux driverProgramThe driver-related information is specified. You must specify the following information for the Linux driver. 1. Module Author: specified

Windows driver development and windows driver development The previous article "Windows driver development-basics 2" has introduced the windows framework. What are the differences between WDF? We know that in WDF, KMDF is required. KMDF is based on WDM. WDM Driver Model In the WDM

Original article: Documentation/I2C/upgrading-clientsTranslator: Guo shaobei2010/05/10 Update I2C drivers to the new 2.6 Driver Model========================================================== ========== Note: the I2C driver here refers to the I2C client driver, for example, RTC, USBTransceiver driver and so on. Ben doo