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    D1s 空的新芯片上电后USB插电脑没有反应。

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    • E
      exculivor LV 3 last edited by

      如题,空芯片,上电后,USB插电脑,电脑没有识别到设备。(驱动安装好了)。按住FEL上电也没反应。
      各供电电压也都正常,LDOB电压是1.36V。
      调试串口我接的是串口3,接上后没有输出。

      原理图参考的WHYCAN的

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      • E
        exculivor LV 3 last edited by

        对了,我GPADC0是悬空的,这个有没有影响?

        whycan 1 Reply Last reply Reply Quote Share 0
        • whycan
          whycan晕哥 LV 9 @exculivor last edited by

          @exculivor
          晶振起振了吗?

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          • E
            exculivor LV 3 @whycan last edited by

            This post is deleted!
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            • E
              exculivor LV 3 @whycan last edited by

              @whycan 应该是起振了的,32.76确定起振了, 24M的手头的示波器量不出来😂

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              • E
                exculivor LV 3 @whycan last edited by

                @whycan 不知道为啥,我这个示波器量单片机的32M的都能量出来,这个24的放上去看不出波形来

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                • WhycanService
                  WhycanService LV 8 last edited by

                  LDOB电压是1.36V是正常情况,看看有没有虚焊,24M晶振起振了吗,或者usb走线对不对。

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                  • E
                    exculivor LV 3 @WhycanService last edited by

                    @whycanservice 32.76的晶振起振了,不知道为啥我用示波器量24M的晶振波形的时候没有波形....我用的X10档位。换了个其他的板子32M的都能量出来。
                    USB线没有画反,虚焊这个我再焊接下试试吧。
                    再请教个问题,如果一切正常串口3会有打印输出吗?还是得刷上固件串口3才有输出?

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                    • P
                      ppdbb LV 1 last edited by

                      请问怎么解决的。我遇到了同样的问题,24M晶振确认起振了,USB有D+有电平,无信号

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                      • Z
                        zhangjingxun12 LV 4 @ppdbb last edited by

                        @ppdbb 用xfel试试,或者用量产工具试试

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