This a pair of libraries for Waveshare Electronics 2.2 Inch 320x240 TFT touch LCD. One example is with hardware SPI and the other uses generic bit-banging method. The LCD utilizes BD663474 chip for display and XPT2046 as touch controller. The codes a

AD转换 外部输入，XPT2046 单片机实例(transform "A" to "D" XPT2046)

可以用51单片机和XPT2046芯片进行AD数据采集和LED显示(AD data acquisition and LED display can be carried out with 51 single chip microcomputer and XPT2046 chip.)