ERRORE LiquidCristal _I2C

Da **papat** Dom Set 11, 2016 5:32 pm

in questo sketch ho un errore su lcd init,puoi aiutarmi?

Codice:: // libraries definition #include <Wire.h> #include <LiquidCrystal_I2C.h> #include "RTClib.h" // frequency musical notes #define NOTE_C6 1047 #define NOTE_C3 131 #define NOTE_G3 196 // pins definition int levelSensorPin = 0; int moistureSensorPin = 1; int audioPin = 2; int soggyLEDPin = 3; int moistsoilLEDPin = 4; int drysoilLEDPin = 5; int pumpLEDPin = 6; int pumpPin = 7; // variables int levelSensorValue; // stores the level sensor values int moistureSensorValue; // stores the moisture sensor values int j = 0; // system messages const char *string_table[] = { " Welcome! =)", " Tank LOW level", " Dry soil", " Moist soil", " Soggy soil", "The water pump is on", " ArduinoByMyself", " Watering System", " Please wait!" }; // objects definition RTC_DS1307 RTC; LiquidCrystal_I2C lcd(0x27,20,4); void setup(){ // serial initialization Serial.begin(9600); // LCD initialization lcd.init(); lcd.backlight(); // with Backlight lcd.clear(); // clearscreen // Wire initialization Wire.begin(); // RTC initialization RTC.begin(); if (!RTC.isrunning()){ // date and time adjust as the PC computer date and time RTC.adjust(DateTime(__DATE__, __TIME__)); } // Arduino pins initalization pinMode(audioPin, OUTPUT); pinMode(soggyLEDPin, OUTPUT); pinMode(moistsoilLEDPin,OUTPUT); pinMode(drysoilLEDPin,OUTPUT); pinMode(pumpLEDPin,OUTPUT); pinMode(pumpPin,OUTPUT); // LCD initial messages lcd.clear(); lcd.setCursor(0,0); lcd.print(string_table[6]); lcd.setCursor(0,1); lcd.print(string_table[7]); lcd.setCursor(0,3); lcd.print(string_table[0]); // initialization delay delay(5000); } void loop(){ // RTC parameters definition DateTime myRTC = RTC.now(); int H = myRTC.hour(); int M = myRTC.minute(); int S = myRTC.second(); // call Clock Function //RightHour(); // reads the sensors levelSensorValue = analogRead(levelSensorPin); moistureSensorValue = analogRead(moistureSensorPin); // if low water level: plays the low level alarm if(levelSensorValue > 600){ // system messages lcd.clear(); RightHour(); lcd.setCursor(0,3); lcd.print(string_table[1]); // plays the alarm sound for(int i=0;i<2;i++){ tone(audioPin, NOTE_G3, 200); delay(200); tone(audioPin, NOTE_C3, 200); delay(200); noTone(audioPin); } } // check the moisture range if(moistureSensorValue >= 700){ // in case of dry soil: // system messages lcd.clear(); RightHour(); lcd.setCursor(0,3); lcd.print(string_table[2]); // lights up the correct LED digitalWrite(drysoilLEDPin,HIGH); digitalWrite(moistsoilLEDPin,LOW); digitalWrite(soggyLEDPin,LOW); // plays the alarm sound tone(audioPin, NOTE_C6, 100); delay(250); noTone(audioPin); } if((moistureSensorValue < 700) && (moistureSensorValue >= 300)){ // in case of moist soil: // system messages lcd.clear(); RightHour(); lcd.setCursor(0,3); lcd.print(string_table[3]); // lights up the correct LED digitalWrite(drysoilLEDPin,LOW); digitalWrite(moistsoilLEDPin,HIGH); digitalWrite(soggyLEDPin,LOW); delay(250); } if(moistureSensorValue < 300){ // in case of soggy soil: // system messages lcd.clear(); RightHour(); lcd.setCursor(0,3); lcd.print(string_table[4]); // lights up the correct LED digitalWrite(drysoilLEDPin,LOW); digitalWrite(moistsoilLEDPin,LOW); digitalWrite(soggyLEDPin,HIGH); delay(100); } // if the soil is dry and if it is the right time: turn on the pump for 1 minute if((H == 16) && (M == 50) && (S == 00)){ while(moistureSensorValue >= 700){ // system messages lcd.clear(); RightHour(); lcd.setCursor(0,1); lcd.print(string_table[8]); lcd.setCursor(0,3); lcd.print(string_table[5]); // turn the pump on digitalWrite(pumpPin,HIGH); digitalWrite(pumpLEDPin,HIGH); delay(10000); // if the soil is not moist so far // reads the moisture sensor once more moistureSensorValue = analogRead(moistureSensorPin); } // turn the pump off digitalWrite(pumpPin,LOW); digitalWrite(pumpLEDPin,LOW); } } // Real Time Clock Function void RightHour() { DateTime Now = RTC.now(); String clock_date = " Date: "; String clock_hour = " Time: "; int _day = Now.day(); int _month = Now.month(); int _year = Now.year(); clock_date += fixZero(_day); clock_date += "/"; clock_date += fixZero(_month); clock_date += "/"; clock_date += _year; int _hour = Now.hour(); int _minute = Now.minute(); int _second = Now.second(); clock_hour += fixZero(_hour); clock_hour += ":"; clock_hour += fixZero(_minute); clock_hour += ":"; clock_hour += fixZero(_second); lcd.clear(); lcd.setCursor(0, 0); lcd.print(clock_date); lcd.setCursor(0, 1); lcd.print(clock_hour); delay(500); } String fixZero(int i) { String ret; if (i < 10) ret += "0"; ret += i; return ret; }