请问这是怎么回事
C:\Users\acer\Desktop\sketch_jan02a\sketch_jan02a.ino: In function 'void openLight()':
sketch_jan02a:6: error: 'D2' was not declared in this scope
#define BEDROOD_LIGHTD2
^
C:\Users\acer\Desktop\sketch_jan02a\sketch_jan02a.ino:30:16: note: in expansion of macro 'BEDROOD_LIGHT'
digitalWrite(BEDROOD_LIGHT, HIGH);
^
C:\Users\acer\Desktop\sketch_jan02a\sketch_jan02a.ino: In function 'void closeLight()':
sketch_jan02a:6: error: 'D2' was not declared in this scope
#define BEDROOD_LIGHTD2
^
C:\Users\acer\Desktop\sketch_jan02a\sketch_jan02a.ino:34:16: note: in expansion of macro 'BEDROOD_LIGHT'
digitalWrite(BEDROOD_LIGHT, LOW);
^
C:\Users\acer\Desktop\sketch_jan02a\sketch_jan02a.ino: In function 'void connectWiFi()':
C:\Users\acer\Desktop\sketch_jan02a\sketch_jan02a.ino:40:37: warning: invalid conversion from 'const char*' to 'char*' [-fpermissive]
WiFi.begin(WIFI_SSID,WIFI_PASSWORD);
^
In file included from C:\Users\acer\Desktop\sketch_jan02a\sketch_jan02a.ino:1:0:
C:\Users\acer\Desktop\arduino-1.8.3\libraries\WiFi\src/WiFi.h:79:9: note: initializing argument 1 of 'int WiFiClass::begin(char*, const char*)'
int begin(char* ssid, const char *passphrase);
^
C:\Users\acer\Desktop\sketch_jan02a\sketch_jan02a.ino: In function 'void callback(char*, byte*, unsigned int)':
sketch_jan02a:74: error: 'client' was not declared in this scope
client.publish(pubTopic,sendMseg);
^
C:\Users\acer\Desktop\sketch_jan02a\sketch_jan02a.ino: In function 'void ConnectAliyun()':
sketch_jan02a:78: error: 'client' was not declared in this scope
while(!client.connected()){
^
sketch_jan02a:81: error: 'myAliyun' was not declared in this scope
if(client.connect(myAliyun.client_id,myAliyun.username,myAliyun.password)){
^
C:\Users\acer\Desktop\sketch_jan02a\sketch_jan02a.ino: In function 'void setup()':
sketch_jan02a:6: error: 'D2' was not declared in this scope
#define BEDROOD_LIGHTD2
^
C:\Users\acer\Desktop\sketch_jan02a\sketch_jan02a.ino:94:11: note: in expansion of macro 'BEDROOD_LIGHT'
pinMode(BEDROOD_LIGHT,OUTPUT);
^
sketch_jan02a:100: error: 'myAliyun' was not declared in this scope
myAliyun.init(ALIYUN_SERVER,ProductKey,ClientId,DeviceName,DeviceSecret);
^
sketch_jan02a:102: error: 'client' was not declared in this scope
client.setServer(myAliyun.mqtt_server,PORT);
^
C:\Users\acer\Desktop\sketch_jan02a\sketch_jan02a.ino: In function 'void loop()':
sketch_jan02a:118: error: 'client' was not declared in this scope
if(!client.connected()){
^
sketch_jan02a:121: error: 'client' was not declared in this scope
client.loop();
^
exit status 1
'D2' was not declared in this scope
代码开头没有添加库文件 这个好，必须支持。 没有添加库
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