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    温湿度传感器调试,io读取问题

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    • C
      chshwei LV 3 last edited by

      测试主板的gpio输入输出切换功能正常,但是温湿度传感器拉低时,不能到0,主板读取io的状态是1,示波器可以看到温湿度传感器已经工作
      下图是温湿度传感器在示波器上的波形

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      • xiaowenge
        DOT小文哥 LV 8 @chushuangwei last edited by

        @chushuangwei 图好像没传成功,没看到图

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          chshwei LV 3 last edited by

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          • C
            chshwei LV 3 last edited by

            dht11.jpg

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            • xiaowenge
              DOT小文哥 LV 8 @chushuangwei last edited by

              @chushuangwei 接的哪个引脚?有单独量哪个引脚的波形吗?

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                chshwei LV 3 @xiaowenge last edited by

                @tuotatianwang PD22、PC1都是这样

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                  chshwei LV 3 @xiaowenge last edited by

                  @tuotatianwang 请问有可以参考的解决方法吗?

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                    AW老油条 LV 2 @chushuangwei last edited by

                    @chushuangwei linux里面自带一线协议,可以直接使用原生的w1框架;这种有时序要求的需要禁用中断和抢占。

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                    • Y
                      厂工小钱 LV 2 @chushuangwei last edited by

                      @chushuangwei 试试断开和D1的连接,确认sensor驱动能力;D1确认IO是否配置了上拉。

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                      • xiaowenge
                        DOT小文哥 LV 8 @tracewong last edited by

                        @tracewong 好家伙,看看什么叫专业

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