次のリストが部屋の明るさをフォトセンサーで捉えて、MQTTのパブリッシュメッセージを定期的に送出するプログラムです。
- #include <SoftwareSerial.h>
- SoftwareSerial mySerial(10, 11); // RX, TX
- byte con[]={0x10,0x21,0x00,0x06,'M','Q','I','s','d','p',0x03,0x02,0x00,0x3c,0x00,0x13,'m','o','s','q','s','u','b','/','1','2','5','1','6','-','h','i','r','o','3'};
- byte pub[]={0x30,0x11,0x00,0x0b,'a','r','d','u','i','n','o','/','a','2','/','0','0','0','0'};
- void getResponse(int j){
- int i;
- for (i=0;i<j;i++){
- if (mySerial.available())
- Serial.write(mySerial.read());
- delay(1);
- }
- }
- void setup()
- {
- int i,j;
- Serial.begin(9600);
- mySerial.begin(9600);
- while(!Serial);
- mySerial.print("AT+RST\r\n");
- getResponse(5000);
- mySerial.print("AT+CIPSTART=\"TCP\",\"192.168.1.16\",1883\r\n");
- getResponse(1000);
- mySerial.print("AT+CIPSEND=35\r\n");
- getResponse(1000);
- for (i=0;i<35;i++)mySerial.write(con[i]);
- getResponse(1000);
- }
- void loop(){
- int i,v,n;
- mySerial.print("AT+CIPSEND=19\r\n");
- getResponse(1000);
- v = analogRead(2);
- n=int(v/1000);
- pub[15]='0'+n;
- v = v -(n*1000);
- n=int(v/100);
- pub[16]='0'+n;
- v = v - (n*100);
- n=int(v/10);
- pub[17]='0'+n;
- v = v - (n*10);
- pub[18]='0'+v;
- for (i=0;i<19;i++)mySerial.write(pub[i]);
- getResponse(1000);
- }
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