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
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
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
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
The Linux kernel is highly customizable and can be customized by configuring the compilation options.When configuring the kernel compilation option, there are generally three compiler options for the driver, not compiling, compiling kernel-driven, and compiling to module-driven. So Linux drivers are generally divided into two categories, kernel-driven and module-driven, of course, there is no absolute difference between the two; when compiled into ker
[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 {
The driver wizard's friends know that the driver wizard is used to repair the computer hardware software, everyone in the internet when there is a computer network card driver display is "yellow exclamation mark", and then the Web page can not open, small series encountered such a situation, this time everyone first thought must be the NIC
Now, let's write our own first character device driver--light LEDs. (Imperfect, back to perfect)
Hardware platform: Exynos4412 (FS4412)
Writing the drive is divided into the following steps:
A--View the schematic, data manual, understand the equipment operation method;
B-Find a similar driver in the kernel, develop it as a template, and sometimes need to start from scratch;
C-Implement
Will drive from the NVIDIA official website download back to enter the text mode directly run the installation, found that prompted the following error:
Error:the Nouveau Kernel Driver is currently into use by your system. This
Driver is incompatible with the NVIDIA driver, and must being disabled
Before proceeding. Please consult the NVIDIA
If you keep reporting this error,First, you do not have the relevant database driver locally (mysql:-->pdo_myql,postgresql-->pdo_pgsql, etc.);Need to performphp-m| Grep-i PDOSee what drive configurations you have;Driver configuration in: Your local PHP file has a php.ini file, search pdo_myql or Pdo_pgsql, which will be used to remove the preceding comma, the comma in the INI file is the meaning of comments
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
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