Discover linux driver development pdf, include the articles, news, trends, analysis and practical advice about linux driver development pdf on alibabacloud.com
structXxx_plat_data *pdata = pdev->dev.platform_data;/*Get Private Data*/4Platform_get_resource (PDEV,XXX,X);/*Get device Resources*/5 ...6 }7 8 Static structPlatform_driver Xxx_platform_driver =9 {Ten. Probe =Xxx_probe, One. remove =__devexit_p (xxx_remove), A. Driver = - { -. Name = Name,/*consistent with platform device name*/ the ... - }, - ... - }; + - Static int__init Xxx_driver_init (void) + { A ... at /*
buzzer is to set the buzzer pin as the input mode, which is used by the gpiolib to achieve. }The buzzer is divided into two kinds, one is active buzzer, the other is passive buzzer. A PWM method must be used for the passive buzzer to make the buzzer sound. The active buzzer can be driven by the PWM method, or it can be sent directly to a high level to make the buzzer sound, but the frequency can not be changed.The code contents of the Pwm_set_freq function are as followsNBSP;TCFG0 is set in Ubo
/** * Author:hasen * Reference: Linux device Driver Development Details * Introduction: Android Small rookie Linux * device Driver Development Learning Journey * Topic: device drivers that support polling operations * DAT
0X11000C20Gpx1dat 0X11000C24 led4 3-4 3-5 Gpf3con 0x114001e0Gpf3dat 0x114001e4 Here to note : ARM architecture is IO memory, must be mapped ioremap (); Its role is the mapping of physical memory to virtual memory . Using the Writel readl These two functions, the detailed explanation will not be on the back, look at the simple usage first:Take LED2 as an example, the following is address mapping and reading and writing: int *pgpx2con ; int *pgpx2dat; Pgpx2con = Ioremap (Gpx2con, 4); Pgpx2dat
I have been reading the code. Today I am going to try it. I will take the tiny6410 LED lamp to open the knife. Although I write it myself, it is actually referring to the routine. However, the basic idea is quite clear. Define this drive as MISC device (Miscellaneous Device Driver), including the header file miscdevice. h. In fact, the so-called miscellaneous driver is the device
Tags: parameter usr author the development Linux drive MPI build modDeclare the parameter names, types, and permissions you want to pass in the driver's module.Module_param (name, type, permission) of the variable;The first example#include #includeStatic Char*p_name ="USR"; Module_param (P_name, Charp, S_irugo); Module_parm_desc (P_name,"This is a char * string.");Static int__init Hi_init (void) {PRINTK (Ke
hardware interface8. Touch screen interface and porting for embedded Linux9. Capacitive/resistive touch screen frame implementation10.Linux Device driven touch screen Driver Development example analysis11. The development and implementation of capacitive screen in AndroidKeynote Speakers: Yi Teacher, huaqing Vision Sh
"Linux device Driver development in detail: Based on the latest Linux 4.0 kernel" China-pub today on-line into the pre-sale stage: http://product.china-pub.com/4733972650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M00/71/30/wKiom1XISFmwMoxqABlXLgvpEio656.jpg "title=" Linux
"Linux device Driver development in detail: Based on the latest Linux 4.0 kernel" China-pub today on-line into the pre-sale stage: http://product.china-pub.com/4733972Recommended Order OneTechnology is changing rapidly, industry earthshaking, rolling the red dust, disappearing things too much, the birth of new things i
1. Preparations First, install the GCC tool chain and the development environment. You can check the previous steps. You have to compile the kernel. Generally, the Development Board has the kernel. Now I do not know how to configure the kernel. You can only compile the kernel according to the default settings of the Development Board. uboot needs to be compiled b
Embedded Linux Driver Development tutorial (kernel driver, watchdog technology, touch screen, video capture system)Http://www.ibeifeng.com/goods-475.htmlConsulting QQ2110053820Course Lecturer: Mr. HanCourse Category: LinuxSuitable for people: advancedNumber of lessons: 109 hoursUpdate level: CompleteUsing the technolog
In the previous section, we introduced two methods for driver entry into the kernel: module and direct compilation into the kernel, and introduced the module'sOne way to compile: In an independent folder, use makefile with the kernel source code path. So how to directly compile the driver into the kernel? What is kernel pruning that we often hear about during kernel porting configuration? We often execute t
This blog updates the latest developments in the specific interpretation of Linux device-Driven Development (3rd edition). 2015.2.26 nearly finished the first draft.This book has been rebase to the Linux 4.0 kernel in development, with most cases based on multicore cortex-a9 platforms .[F] is a revision or upgrade; [N]
:$ (Make)-C $ (kerneldir) M = $ (PWD) Modules Modules_install:$ (Make)-C $ (kerneldir) M = $ (PWD) modules_install If all of the above are complete, this error will occur during make. Shana @ Shana :~ /Linux _ driver development $ makeMake: There is nothing to do for 'modules '. The reason is very simple. You must have copied it from me ~~~ The makefile fo
Embedded Linux Driver Development tutorial (kernel driver, watchdog technology, touch screen, video capture system)Suitable for people: advancedNumber of lessons: 109 hoursUsing the technology: embedded LinuxProjects involved: Driver dev
After two weeks of exploration, I finally had a preliminary understanding of the development of Linux device drivers. Next I will make a summary of the establishment of the development environment for Linux device drivers to facilitate future queries, it also helps beginners of the same path. When users are new to
After two weeks of exploration, I finally had a preliminary understanding of the development of Linux device drivers. Next I will make a summary of the establishment of the development environment for Linux device drivers to facilitate future queries, it also helps beginners of the same path. When users are new to
learn the interfaces that these three types of devices provide to us. (17) static compilation (re-download compiled Linux kernel) and dynamic compilation. The development phase is dominated by dynamic compilation (without restarting the kernel). Dynamically loaded in the same way as the module. (18) The main device number distinguishes device drivers. The secondary device number distinguishes between multi
without having to go through the undo mapping, which provides the following call to the kernel:void dma_sync_single_for_cpu (struct device *dev, dma_handle_tbus_addr, size_t size, enum dma_data_directction direction );This function should be called before the processor accesses the streaming DMA buffer. Once the function is called, the processor "owns" the DMA buffer and can access it as needed. Then, before the device accesses the buffer, the following function should be called to return owner
after her mission is basically completed, then she gave Urb to whom? This is the previously mentioned USB controller driver, host.As for host, there are a lot of money on the market now, and if your boss gives you the most mature image of EHCI, you're lucky. This basic does not need you to write, as long as a little modification, to register her on the bus can. If you are unfortunate enough to use a host like MUSB, you are miserable and you have suff
Start building with 50+ products and up to 12 months usage for Elastic Compute Service
1 on 1 presale consultation
24/7 Technical Support 6 Free Tickets per Quarter Faster Response
Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.
A comprehensive suite of global cloud computing services to power your business
Payment Methods We Support
