ADS7846/7843 chip suitable for use at 4-wire Touch Panel, which through a standard SPI protocol and CPU communications, easy operation and high precision, when the touch screen is pressed (ie, touch case has happened) is ADS7846 hair to the CPU interrupt request, CPU access to the request should be delayed and then respond to their request, aimed at the elimination of jitter in order to make a more accurate sampling. If a sample is not accurate, you can try many times the last time check the results of sampling, whichever it is also aimed at the elimination of jitter.

触摸屏的驱动程序（C语言）
.........................\Touch1-8.txt

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