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用单片机IO口模拟SPI时序，单端模式和差分模式都试过，结果一样，硬件连接没问题，延时也加长了，还是不行，附件是驱动程序，麻烦各位大神帮忙看看~~
这个要严格按照datasheet上的时序图配置
触摸是确认一下输入的电压值有没有变化
