Linux Embedded Drive Learning path (19) touch screen driver

Touch screen Use process:

1. Press to create the interrupt.

2. Start the ad conversion xy coordinates in the interrupt handler.

The 3.AD conversion ends and an ad interrupt is generated.

4. Escalate the information in the ad's interrupt handler function and start the timer.

5. Timer time to enter interrupt, handle long press slide. Skip to step Two

6. Loosen.

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Linux Embedded Drive Learning path (19) touch screen driver