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Reference: http://blog.chinaunix.net/uid-22174347-id-1786941.html
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Development Environment
Compilation System: fedora9
Compiler: arm-linux-4.4.3
Master chip: S3C2440
Development Board: mini2440
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I. Working Principle of resistive touch s
Today try to open their own back cover to dismantle the line, sure enough this method is kingly. In the search Raiders saw the following post, I think the summary is good, hereby reproduced here:white stone 2015-05-22 10:07 usage Reviews There is always one for you: Lenovo Miix2 8-inch version of the touch screen failure of the various solutionsPrefaceNow the col
Lenovo's projection phone can project touch screen to any surfaceSmart machines with built-in projectors-well, there's really only two of Samsung's--so far not really popular, but Lenovo thinks it finally found this combination of the right use case: Project a touch screen o
Address: http://www.dzsc.com/data/html/2010-11-8/86953.html
Abstract: This paper briefly introduces the structure and working principle of the touch screen. Taking the touch screen control chip ADS7843 of Burr-Brown as an example, it introduces the typical circuits and opera
Touch-screen Initialization1. Set the ad conversion clockAdccon (12. Set Interrupt Masking2.1.TC interrupts, which can occur when a finger touches or moves away2.2.ADC interrupt, interrupt generated when ADC conversion is completeEnable TC Interrupt, shielded ADC interrupt, poll to see ADC interruptIntmsk ~ (1Intsubmask ~ (13. Enter the wait interrupt mode (press)ADCTSC 0xd3TC Interrupt Handling1. Start XY
First, touch eventsOntouchstart, Ontouchmove, Ontouchend, OntouchcancelCurrently mobile browsers support these 4 touch events, including ie. Because the touchscreen also supports MouseEvent, their order is important to note: Touchstart→mouseover→mousemove→mousedown→mouseup→click1Apple introduced touch event api,android in iOS 2.0 and is catching up to this fact s
Recent news shows that because of Microsoft's efforts to promote the Windows 8 system, the future of the new notebook products will be equipped with touch screen to bring a better sense of use. And for PC manufacturers, the original old model update configuration and then back to the market, is undoubtedly a time-saving method, which Lenovo IdeaPad Z400touch is s
With the advent of summer vacation, notebook computers will also usher in a peak sales, especially the students will enter the University of friends, are looking for a low-cost but also has a mainstream configuration and performance of students. Lenovo's recently launched IdeaPad U310 Touch seems like a good choice, with a MacBook-like metal fuselage design, with a touchscreen and Windows 8 system, and a good keyboard feel to the needs of students ' f
suddenly become transparent, the light transmittance is 80%, and the light transmittance decreases when the light transmittance goes down,To 300, the thickness increased to 80%. Ito is the main material used by the touch screen and capacitive touch screen of all resistor technology. In fact, the
Reference: http://blog.chinaunix.net/uid-22174347-id-1786941.html
========================================================== ============================
Development Environment
Compilation System: fedora9
Compiler: arm-linux-4.4.3
Master chip: S3C2440
Development Board: mini2440
========================================================== ============================
I. Working Principle of resistive touch s
The 4K resolution is not just a new favorite in the television field, it is also invading the computer field. Following Toshiba, Lenovo joined the competition for 4K laptops, offering a 15.6-inch, 3840*2160-resolution screen Y50 touch 4 K. In line with the previous Y50 positioning, Y50 touch 4K is a high-end game in th
Capacitive touch screen and traditional resistive touch screenDifferences. When a resistive touch screen is working, only one touch point can be judged at a time. If there are more than
Preface
What is the difference between a touch-screen website and a traditional pc-side website? The change in interaction methods is the first. For exampleClick EventIt is so powerless under the touch screen device.
Most interactions on mobile phones are implemented through touch
Comments: Most interactions on mobile phones are implemented through touch. Therefore, for interactive websites with touch screens, touch events are very important. Here we will introduce several popular touch events, you can test this event in most modern browsers. It must be a to
Touch Event "HTML5 Build touch Screen website"ObjectiveWhat is the difference between a touch screen website and a traditional PC-side website, and the change in interaction is the first. For example, the click event that we use is so powerless under a touchscreen device.Mos
display of the corresponding coordinates points or graphic characters to know the intention of the touch. The resistive touch screen is used more in the embedded system. Resistance Touch screen is a 4-layer transparent composite film sc
, and the metal is not easy to achieve a very uniform thickness, not suitable for the voltage distribution layer, can only be used as the exploration layer.1.1 Four-wire resistive screenThe two-layer transparent metal layer of the four-wire resistor analogue technique increases the 5V constant voltage per layer: one vertical direction, one horizontal direction. A total of four cables are required. Features: High-resolution, high-speed transmission of the reaction. Surface hardness treatment, red
Linux touch screen (4)-multi-touch
4.1 Overview
The driver supports the it7260 touch screen controller, which supports up to three touch points and has been tested on CPU: s5pc110, linux-2.6.32.9, Android-2.2. I thought it could b
learn and easy to operate, with no extra space and high reliability. It is the most commonly used input device for portable systems. In particular, the structure of the resistive touch screen is simple and simple, with low cost and good light transmission performance. The working environment is completely isolated from the outside world, without fear of dust and
i2c_driver cypress_7958_driver = {
. Probe = cypress_7958_probe,
. Remove = cypress_7958_remove,
. Id_table = cypress_7958_id,
. Driver = {
. Name = cypress_7958_name,
},
};
Then create the _ init initialization function and the _ exit function to log out of the device: static int _ devinit cypress_7958_ts_init (void), static void _ exit cypress_7958_exit (void ), the i2c_add_driver and i2c_del_driver functions are used to register and deregister I2C devices.
2.2.2 Design of
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