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    R128触摸一直调不通,TWI接口的信号看逻辑分析仪不对,一直有抖动

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    • H
      haaland LV 6 last edited by

      终于LCD显示调出来了~~

      微信图片_20231008151448.jpg

      spi一直有问题,直接用GPIO模拟的

      触摸一直调不通,TWI接口的信号看逻辑分析仪不对,一直有抖动,求助下各位大佬

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      • bayche
        bayche LV 6 last edited by

        twi上拉了吗 没上拉会抖动

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        • H
          haaland LV 6 @bayche last edited by

          @bayche 没外部上拉,可以内部上拉吗

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          • bayche
            bayche LV 6 @haaland last edited by

            @haaland 不可以,twi是开漏输出内部上拉拉不动的。
            硬件spi发送初始化会出现超频问题,st7701s的spi通讯速率200K,硬件spi整个1M上去他就不认了

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