[Video] Secrets of Embedded Linux/Android driver development (1) Touch Screen driver development and android driver development
Secrets of Embedded Linux/Android driver development (1) Touch
Hewlett-Packard has launched touchsmart tx2 rotating touch screen notebook. In early January, the company showed touchsmart TM2 in the CES International Consumer Electronics exhibition, foreign media have recently brought us out-of-the-box videos for this notebook.
Touchsmart series notebook rotating design allows users to change from a notebook to a touch
The ADCTSC registers are shared between the ADC Driver and the touch-screen driver. How can one register be used when processing them? -- Linux general technology-Linux programming and kernel information. The following is a detailed description. You guys give me directions
I wrote an ADC digital-to-analog conversion
This document describes how to develop an I2C interface touch screen driver mounted on the friendly mini-2440 platform.
Kernel edition linux-2.6.32.2,The platform is a touch screen with the arm9-s3c2440 + I2C interface.
For exampleLinux I2C
Design of I2C-based embedded multi-point touch screen driver
Abstract: With Samsung's 7958 processor, the driver Management System of Embedded Linux is used to implement the design of multi-point touch screen
Abstract: The Linux operating system is highly open and portable. It is widely used in embedded operating systems. This article first builds the hardware environment based on Samsung's S3C2410 processor, and then explores the touch screen driver in the embedded Linux operating system.
Program And then the touch
Recently need to put a touch screen device to TV, now more common is the use of USB interface Touch box, for various platforms, here is a general record on Android kernel in the Usbtouchscreen driver.Writing is not easy, reprint need to indicate the source: http://blog.csdn.net/jscese/article/details/41827495Driver compilation:The current kernel are all self-cont
Summary: This article mainly introduces the design of the touch screen Driver Based on QT/embeded in the embedded Linux system, and introduces the working principle and mechanism of the driver interface of the Linux device and the QT/embedded device, combined with a large amount of source code for analysis, the develop
Microsoft Corporation. Last updated on Tuesday, May 18,200 4
Touch screen driver SamplesSample Code for touch screen drivers is provided in the following directories:
% _ Winceroot %/platform/xsc1bd/Drivers/touchp
% _ Winceroot %/public/common/oak/Drivers/
Recently to customers debugging a piece of CNC board, today customers bring a screen, and a USB touch screen chip connected to the screen. The screen will soon be ready for normal display.
Touch
The Touch Screen driver reads user input from hardware and then converts it into a touch event and sends it to GWES. at the same time, convert the coordinates of the calculated coordinates to the calibrated coordinates. calibration coordinates compensate for hardware exceptions, such as
Several of the previous articles have been ported by configuring DTS for multiple drives, and then we are addressing tq335x's touch-driven issues. For various reasons, tq335x touch screen drive is provided by the module, and the Linux official kernel also does not have the drive source code with the touchscreen, the simple configuration of DTS is unable to comple
I. One of the prerequisites for writing a touch screen DRIVER: Input subsystem
1. Introduction to the input subsystem
The input subsystem is provided in Linux. input devices, such as buttons, touch screens, and mouse, can use input interface functions to drive devices.
2. Composition of the input subsystem
I
Touch screen driver analysis: (local drive)
Author: Lai yuping (auly) aulyp@163.com
The Touch Screen driver is a local driver. Microsoft provides the general-purpose-layer mdd. You only
represents the description of the I2C device, including the device name "gt9xx" and I2C's device Address "(0xBA >> 1)"
static struct I2c_board_info __initdata i2c_tpd = {i2c_board_info ("gt9xx", (0xBA >> 1)};1
2, add a driver to the static array tpd_driver_list array
if (Tpd_driver_add (tpd_device_driver) 1 2
Where tpd_device_driver is defined as:
static struct tpd_driver_t Tpd_device_driver =
{
. tpd_device_name = "gt9xx",
. Tpd_local_
Statement in advance: The article only records the porting process for your convenience.
The touch screen of the mini2440 Development Board is the NEC touch screen, while the Android kernel provided on the FriendlyArm is for the tongbao LCD. Therefore, you need to modify the touch
Touch screen Driver Control Based on C8051F020
[Date: 2008-10-29]
Source: foreign electronic components by Zhu PINWEI, Han xiaoxin
[Font:Large Medium Small]
1 IntroductionCurrently, touch screens and LCD screens have become common input and output devices for embedded computer systems.
Some time ago, the touch screen and the Optical Mouse responsible for the project were all input devices. After reading the materials and combining the project code, I made a summary, which basically came from my personal understanding and the Internet.
After linux2.6, Linux abstracts the input device and abstracts the input subsystem, which is the middle layer driven by all I/O devices, provides a unified
1. Hardware principles
1.1 Overview
We often use two types of touch screens: resistive touch screen and capacitive touch screen. They differ greatly in hardware and are relatively less in driver implementation. The capacitive
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.