commandWrite

Other Hardware Displays
1

Does the standard LiquidCrystal library support commandWrite() or must I use LCD4bit library?

2

Does the standard LiquidCrystal library support commandWrite()

I believe that you want to use such a command to send an arbitrary command to the LCD controller and I don't believe that the LiquidCrystal library has such a function. There's no reason that you can't write one of your own.

or must I use LCD4bit library?

The best thing that you can do with the LCD4bit library is to completely forget about it. If you want to know why then just get a copy of the source code and read the comments.

Don

3

I looked at the LiquidCrystal library header file and there is a command function. For some reason it is not listed with all the other functions on the Arduino library page. An example of use would be command(0x04) rather than commandWrite(0x04).