LCD - CustomCharacter:117: error: call of overloaded 'write(int)' is ambiguous

Using Arduino Displays
1

Hi

I have been using the LCD examples that came with the IDE, I have had no problems with the Hello World one and scrolling text one, But the Custom Character one when I run it comes up with the following error:

CustomCharacter.cpp: In function 'void setup()':
CustomCharacter:114: error: call of overloaded 'write(int)' is ambiguous
C:\Users\Scott\Documents\Arduino\arduino-1.0.1-windows\arduino-1.0.1\libraries\LiquidCrystal/LiquidCrystal.h:82: note: candidates are: virtual size_t LiquidCrystal::write(uint8_t)
C:\Users\Scott\Documents\Arduino\arduino-1.0.1-windows\arduino-1.0.1\hardware\arduino\cores\arduino/Print.h:49: note: size_t Print::write(const char*)

Being new to the programming side I am at a loss as to how to fix this error.

Any Help on this matter would be appriciated!!

Thanks

Scott.

2

Change

  lcd.write(0);

to

  lcd.write((byte)0);

on line 115ish.

1 Like
3

Hi

Thanks thats sorted it!!

Scott :smiley: :smiley:

4

Thanks for the help as well.

5

why did u use the ""lcd.write((byte)0);""" instead of "lcd.write(0);" ??? 1 thing i know that if we use lcd.write(0); then complier will show "call of overloaded 'write(int) is ambiguous." why we use the byte in lcd.write() function.???

6

I'm assuming that the custom characters were typed as byte, and thus the change in declaration, new to this so perhaps someone else could chime in.

7

why did u use the ""lcd.write((byte)0);""" instead of "lcd.write(0);"

It's because of how the Arduino IDE deals with 'writing'. The complete explanation can be found here: http://forum.arduino.cc/index.php?topic=174883.msg1299547#msg1299547.

Scroll up a few posts (Caracteres Speacial - #2 by floresta - Displays - Arduino Forum) and I explain how you could have used: lcd.write(8);

Don