文章目录1. 电阻屏原理2. ADC2.1 Device:2.2 Driver:3. TouchSceen3.1 Device3.2 Driver3.3 uDev4. KeyBoard4.1 Device4.2 Driver5. InputDevice5.1 Input字符设备5.2 input_register_device()5.3 input_register_handler()5.4 input_attach_handler()5.5 input event的读取5.5 input event的上报