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我正在关注本教程，据我所知，一切都正确连接，但我的 7seg 显示屏只显示 8888。我尝试将代码上传到控制器，但我返回“没有匹配函数调用 'SevSeg:: SevSeg()'" 我不确定我做错了什么。任何帮助将不胜感激。谢谢！

完整的错误信息：


DaysCounterTest:4:8: error: no matching function for call to 'SevSeg::SevSeg()'

 SevSeg sevseg; //Instantiate a seven segment controller object

        ^~~~~~

In file included from C:\Users\Cel\Documents\Arduino\DaysCounterTest\DaysCounterTest.ino:2:0:

C:\Users\Cel\Documents\Arduino\libraries\Firmware/SevSeg.h:49:3: note: candidate: SevSeg::SevSeg(byte*, byte*, byte, byte, bool, bool, bool)

   SevSeg( byte segmentPinsIn[], byte digitPinsIn[], byte numDigitsIn = 4, byte hardwareConfig = COMMON_ANODE,

   ^~~~~~

C:\Users\Cel\Documents\Arduino\libraries\Firmware/SevSeg.h:49:3: note:   candidate expects 7 arguments, 0 provided

C:\Users\Cel\Documents\Arduino\libraries\Firmware/SevSeg.h:46:7: note: candidate: constexpr SevSeg::SevSeg(const SevSeg&)

 class SevSeg

       ^~~~~~

C:\Users\Cel\Documents\Arduino\libraries\Firmware/SevSeg.h:46:7: note:   candidate expects 1 argument, 0 provided

C:\Users\Cel\Documents\Arduino\libraries\Firmware/SevSeg.h:46:7: note: candidate: constexpr SevSeg::SevSeg(SevSeg&&)

C:\Users\Cel\Documents\Arduino\libraries\Firmware/SevSeg.h:46:7: note:   candidate expects 1 argument, 0 provided

C:\Users\Cel\Documents\Arduino\DaysCounterTest\DaysCounterTest.ino: In function 'void setup()':

DaysCounterTest:87:50: error: no matching function for call to 'SevSeg::begin(byte&, byte&, byte [4], byte [8], bool&, bool&, bool&, bool&)'

   updateWithDelays, leadingZeros, disableDecPoint);

                                                  ^

In file included from C:\Users\Cel\Documents\Arduino\DaysCounterTest\DaysCounterTest.ino:2:0:

C:\Users\Cel\Documents\Arduino\libraries\Firmware/SevSeg.h:53:8: note: candidate: void SevSeg::begin(byte*, byte*, byte, byte, bool, bool, bool)

   void begin( byte segmentPinsIn[], byte digitPinsIn[], byte numDigitsIn = 4, byte hardwareConfig = COMMON_ANODE,

        ^~~~~

C:\Users\Cel\Documents\Arduino\libraries\Firmware/SevSeg.h:53:8: note:   candidate expects 7 arguments, 8 provided

exit status 1

no matching function for call to 'SevSeg::SevSeg()'



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1 回答 1

0

我注意到我的链接没有发布在我的原始帖子中。我发现我需要的库没有正确导入，更具体地说是 sevseg 库。我需要用它导入另一个。现在 7 段显示正确显示

于 2021-07-11T23:45:14.910 回答