Arduino – Smart Garden Study-Board
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#include <SoftwareSerial.h> SoftwareSerial BTSerial(2,3); #include <Wire.h> #include <LiquidCrystal_I2C.h> LiquidCrystal_I2C lcd(0x27, 16, 2); char chr[25]; int index=0; int varCDS=0, varSOIL=0, T=0, H=0; int piezo=A3; int ledA=6; int ledB=13; unsigned long cnt=0; byte user_value1[8]={ B00000, B00100, B00100, B01110, B11111, B11101, B01110, B00000 }; void setup() { lcd.init(); lcd.backlight(); lcd.createChar(0, user_value1); Serial.begin(9600); BTSerial.begin(9600); pinMode(ledA, OUTPUT); pinMode(ledB, OUTPUT); } void loop() { char temp; if (BTSerial.available()) { temp=BTSerial.read(); if (index==0) { while (temp!='$') { temp=BTSerial.read(); } } chr[index]=temp; index++; Serial.print(temp); } if (temp=='\n') { index=0; sscanf(chr, "$IOT,%d,%d,%d,%d,", &varCDS, &varSOIL, &T, &H); lcd.setCursor(0,0); lcd.print("C:"); for (int i=0;i<4-String(varCDS).length();i++) { lcd.print(" "); } lcd.print(varCDS); lcd.setCursor(8,0); lcd.print("S:"); for (int i=0;i<4-String(varSOIL).length();i++) { lcd.print(" "); } lcd.print(varSOIL); lcd.setCursor(15,0); if (varSOIL < 500) { if (cnt==0) { cnt=millis(); tone(piezo, 1319); lcd.write(0); digitalWrite(ledA, HIGH); digitalWrite(ledB, LOW); } else if (millis() > cnt+1000) { cnt=0; } else if (millis() > cnt+500) { tone(piezo, 1047); lcd.print(" "); digitalWrite(ledA, LOW); digitalWrite(ledB, HIGH); } } else { lcd.print(" "); cnt=0; noTone(piezo); } lcd.setCursor(0,1); lcd.print("T:"); lcd.print(T); lcd.write(223); lcd.print("C"); lcd.setCursor(8,1); lcd.print("H:"); lcd.print(H); lcd.print("%"); } } |