ESP8266 + 12864I2c 接口实现 国内天气预报显示 小猪佩奇版

派带湿

weatherStation:175:20: error: 'D4' was not declared in this scope
#define OLED_RESET D4 //4
                    ^
E:\ESP8266-LED12864--master\ESP8266-LED12864--master\weatherStation\weatherStation.ino:177:26: note: in expansion of macro 'OLED_RESET'
Adafruit_SSD1306 display(OLED_RESET);
                          ^
exit status 1
'D4' was not declared in this scope


求救，不知道错哪了！！