意外错误消息，arduino SharpIR

Question

我正在尝试使用GPY2Y0A21Y IRsensor，但我在使代码工作时遇到了问题。我下载了SharpIR，但在使用它的一个函数时遇到了错误。

#include <SharpIR.h>


void setup() {
  // put your setup code here, to run once:
Serial.begin(9600);
SharpIR sharp("A1", 25, 93, 1080);
}

void loop() {
  // put your main code here, to run repeatedly:
}

这是错误消息

/var/folders/_z/t_qth0vd0xj6fxvyp_k5nvc00000gn/T/arduino_modified_sketch_475607/sketch_jan17a.ino: In function 'void setup()':
sketch_jan17a:7: error: no matching function for call to 'SharpIR::SharpIR(const char [3], int, int, int)'
 SharpIR sharp("A1", 25, 93, 1080);
                                 ^
/var/folders/_z/t_qth0vd0xj6fxvyp_k5nvc00000gn/T/arduino_modified_sketch_475607/sketch_jan17a.ino:7:33: note: candidates are:
In file included from /var/folders/_z/t_qth0vd0xj6fxvyp_k5nvc00000gn/T/arduino_modified_sketch_475607/sketch_jan17a.ino:1:0:
/Users/jeroenturkstra/Documents/Arduino/libraries/SharpIR/src/SharpIR.h:29:5: note: SharpIR::SharpIR(uint8_t, uint8_t)
     SharpIR(uint8_t _sensorType, uint8_t _sensorPin);
     ^
/Users/jeroenturkstra/Documents/Arduino/libraries/SharpIR/src/SharpIR.h:29:5: note:   candidate expects 2 arguments, 4 provided
/Users/jeroenturkstra/Documents/Arduino/libraries/SharpIR/src/SharpIR.h:25:7: note: constexpr SharpIR::SharpIR(const SharpIR&)
 class SharpIR
       ^
/Users/jeroenturkstra/Documents/Arduino/libraries/SharpIR/src/SharpIR.h:25:7: note:   candidate expects 1 argument, 4 provided
/Users/jeroenturkstra/Documents/Arduino/libraries/SharpIR/src/SharpIR.h:25:7: note: constexpr SharpIR::SharpIR(SharpIR&&)
/Users/jeroenturkstra/Documents/Arduino/libraries/SharpIR/src/SharpIR.h:25:7: note:   candidate expects 1 argument, 4 provided
exit status 1
no matching function for call to 'SharpIR::SharpIR(const char [3], int, int, int)'

我对库之类的东西不是很熟悉，所以我不知道这段代码出了什么问题。我得到的只是这个函数并不存在。我确实下载了SharpIR btw。如果有人能帮上忙，我将不胜感激(本站https://playground.arduino.cc/Main/SharpIR提供了示例代码)

Answer 1

从SharpIR declaration上看，这个错误似乎是合法的。也许您正在遵循的指南已被弃用，并且与您安装的库不兼容？

class SharpIR
{
  public:

    SharpIR (int irPin, long sensorModel);
    int distance();

  private:

    void sort(int a[], int size);

    int _irPin;
    long _model;
};

对象初始化只需要一个引脚号和一个标识传感器型号的长字符。但是看你问题中的错误，看起来声明是以传感器标识号作为第一个参数，号作为第二个参数来实现的。我认为你真的应该在你的本地安装中打开源代码并检查它。您可以在终端中使用以下命令打印它：

cat /Users/jeroenturkstra/Documents/Arduino/libraries/SharpIR/src/SharpIR.h

(我现在无法打开Dropbox链接...)