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Keypad header file for atmega

Maisha

Apr 22, 2016
8
Joined
Apr 22, 2016
Messages
8
Does anyone know a link to keypad header file for avr?
 
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Maisha

Apr 22, 2016
8
Joined
Apr 22, 2016
Messages
8
If we want to read data in the lcd to use with the our code how should we change the R/W pin.?In this case is it connected to a MCU pin Or to thr GND .?
 

Sadlercomfort

Ash
Feb 9, 2013
424
Joined
Feb 9, 2013
Messages
424
It is common for the R/W pin to be tied to GND when not in use (to save MCU pins), which means you can only write data to the LCD.

If you wish to read and write data to the LCD, you can connect the R/W to a MCU pin... Now you can set LOW to write data, HIGH to read data.
 
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