help with code

Projects Programming
1

Arduino: 1.6.13 (Windows 7), Board: "Arduino/Genuino Uno"

clock:10: error: 'POSITIVE' was not declared in this scope

LiquidCrystal_I2C lcd(0x3F, 2, 1, 0, 4, 5, 6, 7, 3, POSITIVE);

^

C:\Users\Austin\AppData\Local\Temp\Rar$DIa0.388\clock\clock.ino: In function 'void setup()':

clock:24: error: no matching function for call to 'LiquidCrystal_I2C::begin(int, int)'

lcd.begin(16, 2);

^

C:\Users\Austin\AppData\Local\Temp\Rar$DIa0.388\clock\clock.ino:24:18: note: candidate is:

In file included from C:\Users\Austin\AppData\Local\Temp\Rar$DIa0.388\clock\clock.ino:8:0:

C:\Users\Austin\Documents\Arduino\libraries\Arduino-LiquidCrystal-I2C-library-master/LiquidCrystal_I2C.h:76:7: note: void LiquidCrystal_I2C::begin()

void begin();

^

C:\Users\Austin\Documents\Arduino\libraries\Arduino-LiquidCrystal-I2C-library-master/LiquidCrystal_I2C.h:76:7: note: candidate expects 0 arguments, 2 provided

exit status 1
'POSITIVE' was not declared in this scope

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error.png
error.png1024×768 52 KB

2

You should study the documentation for the LiquidCrystal libary, as you are calling the routines incorrectly.

3

Probably using the wrong version of LiquidCrystal_I2C for the code/documentation you're basing your code on. There are a bunch of versions of that library floating around, all with the same name (via the magic of forking github repos), as well as lots of code floating around written to a specific version of the library which doesn't work with other versions. I recall that the begin call was one area where the versions often differed.