阿里云IoT套件 SmartLight编译错误
2020-10-112548
AI 快速预览详细
本文解决了在Arduino Uno开发板上编译SmartLight项目时遇到的'D2'未声明的编译错误。通过检查引脚定义并修正为正确的引脚编号（如'A2'），可以解决该问题。文章提供了详细的步骤和建议，帮助用户快速定位并修复错误，节省调试时间。
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请问编译错误，啥原因？ Arduino:1.8.13 (Windows 10), 开发板："Arduino Uno" \arduino_modified_sketch_327840\SmartLight.ino: In function 'void openLight()': SmartLight:6:24: error: 'D2' was not declared in this scope #define BEDROOD_LIGHT D2 ^ C:\Users\362663\AppData\Local\Temp\arduino_modified_sketch_327840\SmartLight.ino:34:16: note: in expansion of macro 'BEDROOD_LIGHT' digitalWrite(BEDROOD_LIGHT, HIGH); ^~~~~~~~~~~~~ C:\Users\362663\AppData\Local\Temp\arduino_modified_sketch_327840\SmartLight.ino:6:24: note: suggested alternative: 'A2' #define BEDROOD_LIGHT D2 ^ C:\Users\362663\AppData\Local\Temp\arduino_modified_sketch_327840\SmartLight.ino:34:16: note: in expansion of macro 'BEDROOD_LIGHT' digitalWrite(BEDROOD_LIGHT, HIGH); ^~~~~~~~~~~~~ C:\Users\362663\AppData\Local\Temp\arduino_modified_sketch_327840\SmartLight.ino: In function 'void closeLight()': SmartLight:6:24: error: 'D2' was not declared in this scope #define BEDROOD_LIGHT D2 ^ C:\Users\362663\AppData\Local\Temp\arduino_modified_sketch_327840\SmartLight.ino:38:16: note: in expansion of macro 'BEDROOD_LIGHT' digitalWrite(BEDROOD_LIGHT, LOW); ^~~~~~~~~~~~~ C:\Users\362663\AppData\Local\Temp\arduino_modified_sketch_327840\SmartLight.ino:6:24: note: suggested alternative: 'A2' #define BEDROOD_LIGHT D2 ^ C:\Users\362663\AppData\Local\Temp\arduino_modified_sketch_327840\SmartLight.ino:38:16: note: in expansion of macro 'BEDROOD_LIGHT' digitalWrite(BEDROOD_LIGHT, LOW); ^~~~~~~~~~~~~ C:\Users\362663\AppData\Local\Temp\arduino_modified_sketch_327840\SmartLight.ino: In function 'void setup()': SmartLight:6:24: error: 'D2' was not declared in this scope #define BEDROOD_LIGHT D2 ^ C:\Users\362663\AppData\Local\Temp\arduino_modified_sketch_327840\SmartLight.ino:98:11: note: in expansion of macro 'BEDROOD_LIGHT' pinMode(BEDROOD_LIGHT,OUTPUT); ^~~~~~~~~~~~~ C:\Users\362663\AppData\Local\Temp\arduino_modified_sketch_327840\SmartLight.ino:6:24: note: suggested alternative: 'A2' #define BEDROOD_LIGHT D2 ^ C:\Users\362663\AppData\Local\Temp\arduino_modified_sketch_327840\SmartLight.ino:98:11: note: in expansion of macro 'BEDROOD_LIGHT' pinMode(BEDROOD_LIGHT,OUTPUT); ^~~~~~~~~~~~~ exit status 1 'D2' was not declared in this scope 在文件 -> 首选项开启 “编译过程中显示详细输出”选项 这份报告会包含更多信息。 |
如果是UNO那么改D2为13. 板载灯。
如果是其他板子，需要选择对板子的型号。 然后根据管脚映射来改代码中的管脚定义。