Error message help

Projects Programming
1

Got an error message and am having trouble understanding. Any help would be grateful!

#include "Wire.h"
#include "LiquidCrystal.h"
#include <Servo.h>
/******************************************/
LiquidCrystal lcd(0);
Servo servo;
const int analogPin = A0;//the analog input pin attach to
const int ledPin = 9;//the led attach to
int inputValue = 0;//variable to store the value coming from sensor
int outputValue = 0;//variable to store the output value
/******************************************/
void setup()
{
  servo.attach(outputValue);
  lcd.begin(20, 4);
  lcd.begin(20, 4);
  lcd.setBacklight(HIGH);
  lcd.print(" Derale Performance");
  Serial.begin(9600);
}
/******************************************/
void loop()
{
  inputValue = analogRead(analogPin);//read the value from the sensor
  outputValue = map(inputValue,0,1023,0,255);//Convert from 0-1023 proportional to the number of a number of from 0 to 255
  analogWrite(ledPin,outputValue);//turn the led on depend on the output value
  Serial.println(outputValue/4.25+160);
  lcd.setCursor(0,3);
  lcd.print(outputValue/4.25+160);
  int reading = analogRead(analogPin);
  int angle = map(reading, 0, 1023, 1500, 2000);
  servo.writeMicroseconds(angle);
}

Error Message

Arduino: 1.8.4 (Windows 7), Board: "Arduino/Genuino Uno"

sketch_sep26a:5: error: no matching function for call to 'LiquidCrystal::LiquidCrystal(int)'

LiquidCrystal lcd(0);

^

C:\Users\mmurphy\Documents\Arduino\sketch_sep26a\sketch_sep26a.ino:5:20: note: candidates are:

In file included from C:\Users\mmurphy\Documents\Arduino\sketch_sep26a\sketch_sep26a.ino:2:0:

C:\Program Files (x86)\Arduino\libraries\LiquidCrystal\src/LiquidCrystal.h:55:3: note: LiquidCrystal::LiquidCrystal(uint8_t, uint8_t, uint8_t, uint8_t, uint8_t, uint8_t)

LiquidCrystal(uint8_t rs, uint8_t enable,

^

C:\Program Files (x86)\Arduino\libraries\LiquidCrystal\src/LiquidCrystal.h:55:3: note: candidate expects 6 arguments, 1 provided

C:\Program Files (x86)\Arduino\libraries\LiquidCrystal\src/LiquidCrystal.h:53:3: note: LiquidCrystal::LiquidCrystal(uint8_t, uint8_t, uint8_t, uint8_t, uint8_t, uint8_t, uint8_t)

LiquidCrystal(uint8_t rs, uint8_t rw, uint8_t enable,

^

C:\Program Files (x86)\Arduino\libraries\LiquidCrystal\src/LiquidCrystal.h:53:3: note: candidate expects 7 arguments, 1 provided

C:\Program Files (x86)\Arduino\libraries\LiquidCrystal\src/LiquidCrystal.h:50:3: note: LiquidCrystal::LiquidCrystal(uint8_t, uint8_t, uint8_t, uint8_t, uint8_t, uint8_t, uint8_t, uint8_t, uint8_t, uint8_t, uint8_t)

LiquidCrystal(uint8_t rs, uint8_t rw, uint8_t enable,

^

C:\Program Files (x86)\Arduino\libraries\LiquidCrystal\src/LiquidCrystal.h:50:3: note: candidate expects 11 arguments, 1 provided

C:\Program Files (x86)\Arduino\libraries\LiquidCrystal\src/LiquidCrystal.h:47:3: note: LiquidCrystal::LiquidCrystal(uint8_t, uint8_t, uint8_t, uint8_t, uint8_t, uint8_t, uint8_t, uint8_t, uint8_t, uint8_t)

LiquidCrystal(uint8_t rs, uint8_t enable,

^

C:\Program Files (x86)\Arduino\libraries\LiquidCrystal\src/LiquidCrystal.h:47:3: note: candidate expects 10 arguments, 1 provided

C:\Program Files (x86)\Arduino\libraries\LiquidCrystal\src/LiquidCrystal.h:45:7: note: constexpr LiquidCrystal::LiquidCrystal(const LiquidCrystal&)

class LiquidCrystal : public Print {

^

C:\Program Files (x86)\Arduino\libraries\LiquidCrystal\src/LiquidCrystal.h:45:7: note: no known conversion for argument 1 from 'int' to 'const LiquidCrystal&'

C:\Program Files (x86)\Arduino\libraries\LiquidCrystal\src/LiquidCrystal.h:45:7: note: constexpr LiquidCrystal::LiquidCrystal(LiquidCrystal&&)

C:\Program Files (x86)\Arduino\libraries\LiquidCrystal\src/LiquidCrystal.h:45:7: note: no known conversion for argument 1 from 'int' to 'LiquidCrystal&&'

C:\Users\mmurphy\Documents\Arduino\sketch_sep26a\sketch_sep26a.ino: In function 'void setup()':

sketch_sep26a:17: error: 'class LiquidCrystal' has no member named 'setBacklight'

lcd.setBacklight(HIGH);

^

exit status 1
no matching function for call to 'LiquidCrystal::LiquidCrystal(int)'

This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.

2

LiquidCrystal lcd(0);Did you copy this line of code from an example or did you invent it yourself ?

What do you think it does ?

3

Agreed the error is on line 5 as the error statement says sketch_sep26a:5:

Also note the message after, error: no matching function for call to 'LiquidCrystal::LiquidCrystal(int)'

basicly saying no function LiquidCrystal(int) in the lcd library.

And lastly you wrote lcd.begin twice, which is obviously not needed, if you dont know how to use the lcd display i suggest you look in your lcd libraries examples.

4

Ah Ha! Got it, thanks.

This was originally a sketch from a few years back. I keep copies of my code in a word doc folder. I copied and pasted it from there for a new project. I forgot I used and Adafruit library with an I2C backpack for an LCD display.

And good catch on the lcd.begin I double wrote.