No, I just use the 4-bit (6-wire) interface with blind timing during display init. There's no reason to ever have to read the display.
Save the extra line and the extra code. Keep it simple.
Tom
Do you bother with reading from the LCD (HD44780)?
Feb 06, 2008
22 Replies
I guess no one else interpreted this question the way I did...
Is is not possible to "store" data in the character ram for special characters and then read this back into the uPC? I've never had the need to do this, but if you're short on RAM (which I know hardly ever happens on modern microcontrollers..), couldn't you use the unused character RAM on the LCD for general purpose storage, or are these LCD locations write-only?
Just wondering...
-mpm
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