, ts_up_interrupt );
// Apply for irq_tc interruption
Devfs_register_chrdev (0, s3c2410_ts_module_name, s3c2410_ts_fops );
// Register the file_operations Structure
Request_irq (irq_timer1, touch_timer_irq, sa_interrupt, g_ts_timer_id, null); // apply for irq_timer1 interruption
Touch_timer_irq (int irq, void * dev_id, struct pt_regs * regs)
// Call the touch interrupt according to the status to Control Data Sampling
The initialization
A uniform electric field is added to the four vertices of the touch screen, such as RT, Rb, LT, and lb, so that the lower layer (indium oxide) ITO glass is filled with a uniform voltage, the upper layer is the receiving signal device. When the pen or finger presses any point on the external side, the controller detects the resistance change and then changes the c
Follow Finddreams Blog: http://blog.csdn.net/finddreams/article/details/44301359In the previous article we have learned some basic questions about the Android written test, "Android development interview by--2." Common Android Basic pen questionsBut as an experienced developer, just know the basic problem is not enough
Game Name:Fengyun Mao penVersion 1.0Game introduction:Application Description: Fengyun Mao Bi is a software for practicing Mao bi. The brush is a treasure provided by the Chinese people to the art treasures of the world. Due to social development, this treasure is gradually forgotten. People prefer mobile phones and tablets, in order to let everyone not forget the wealth left by their ancestors, this software was designed to simulate writing with a brush, which is suitable for friends who love c
interface, compared to a long time no movement of the white screen, the experience of the superior is self-evident. The two pages have the same time to load, but the user's psychological perception of latency varies greatly.
Do not design the Web page as a client
There should be two opposing voices on this topic. Some product managers or designers unknowingly design a Web page for a mobile browser with a client-side taste. I agree that mobile
A wireless router with a screen can be set by clicking on the touch screen, and if there is no response to the click of the screen, please refer to the following methods for troubleshooting.
1
, using the Touch pen oper
formed by the movement of the charge on its pins.1. Indoor visual effectThe two are usually good.Ii. Touch sensitivity1. resistive touch screen: the screen layers must be in contact with pressure. You can use your fingers (even with gloves), nails, and pens to perform operations. Support
This article describes a lot of mobile phone touch event knowledge, such as touchstart,touchmove,touchend, for the screen to get left and right with the web version of the same OH. I used to be less exposed to this knowledge, recently done a project only to find that the original with Event.pagex is not able to get the current position (on the phone). Need to use var to
pressed.
Input_report_abs (tsdev, ABS_PRESSURE, 1); // report the pressure value of the touch screen being pressed (0 or 1)
Input_sync (tsdev); // report a synchronization event, indicating that an event has ended
When the pen is lifted from the touch screen, it must be rep
Document directory
3.1 Kernel
1 Preface
First, let's talk nonsense. Csdn has been registered for a while, but has never published a blog on it. previous articles published on other blogs cannot be retrieved because the password has been forgotten. OK. Start to enter the topic.I am also a beginner, and soon after the entry. Therefore, it should be more suitable for beginners to learn.
2. Overall View
We divide Android into three parts: kernel, frame
achieve human-machine interaction interface.
2 touch screen working principleThe touch screen controller is equivalent to the interface between the touch screen and the microcontroller. The t
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 touch Skew and non-linear order.
pop-up interrupt */dprintk ("pen up: X: % 08d, Y: % 08d \ n", x, y); wait_down_int (); /* Wait for the press to interrupt */tsevent ();/* call the subsequent processing function */} spin_unlock_irq ( (tsdev. lock ));}
Before talking about this interrupt function, let's talk about the main workflow of touch products:
Touch sc
It is impressive that the spring of the past few years has always brought about a really awkward climate experience. rain and cold winds are like catalysts, which make people and things in life and work messy, it seems that a group of betel nuts are chewed to completely lose taste. The piano melody in November Rain's Prelude can make your mind feel safe. Once you have your earphones removed, it is a world that you want to screw your head down and eat it.
But once the head is screwed down, nothin
With the continuous development of science and technology, today's electronic products are more and more humane, a lot of super computer has a touch screen function, similar to a tablet computer or mobile phone, you can directly manipulate directly with the finger, but some users are not accustomed to use the touch screen
Unity Touch screen operationWhen you run a unity game on an iOS or Android device, the left mouse button of the desktop system automatically changes to a touchscreen operation on the phone screen, but actions such as multi-touch screens are not available for mouse operation.
Most of the time, the use of touch screen fling, scroll and other gesture (gesture) operations will greatly improve the user experience of the application, such as rolling the screen in the browser using scroll gestures, use fling to flip pages in the reader. In Android, gesture recognition is implemented through gestu
Deng, it is best to support handwriting input to about 60, or at least 50. I tested it on M8, and it can reach 86/s, as shown in.
It seems that there is still a need for further optimization of the touch driver, and it is necessary to increase the handwriting sensitivity parameters.
For touch screen drivers, in addition to handwriting sensitivity paramete
the touch screen is complete.
Step 2
When an interrupt occurs, the VICxADDRESS In the interrupt control register will receive the information. Then, he can determine that there is an interruption in the VIC1 group and then enter the interrupt processing function to interrupt the processing function, in order to continue to judge whether the touch
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