3 Digit LCD and Driver IC

[ClayE]

well I got my LCD modules in and after lots of studying, figured out how to hook it up. couldn't get anything on the display, then ended up getting junk. after couple of code changes, and finally changing the LCD_DATAUS to 50 from 20, I'm getting what I expect on the display. I'm still getting the first line all "black squares" (or what ever you call it when all the dots are on) on power up. They clear with the clear command, but seems like it shouldn't be doing the "light up the first line" thing when powered up. I'll keep grinding to figure it out. (the second line of the display does not do this).

[skimask]

I've got more than a few styles of parallel LCDs in the shop.
The bulk of them power up to a cleared screen. A couple of them power up the way you describe, one of them powers up with random garbage all over the screen every time. It's probably got to do with how messy the power supply is or it's rise rate or...well, I don't care. As long as they 'clear' after they 'boot', I'm happy.

Are you able to display what you want to or does it come out garbage?

[Archangel]

well I got my LCD modules in and after lots of studying, figured out how to hook it up. couldn't get anything on the display, then ended up getting junk. after couple of code changes, and finally changing the LCD_DATAUS to 50 from 20, I'm getting what I expect on the display. I'm still getting the first line all "black squares" (or what ever you call it when all the dots are on) on power up. They clear with the clear command, but seems like it shouldn't be doing the "light up the first line" thing when powered up. I'll keep grinding to figure it out. (the second line of the display does not do this).

Hello ClayE, could we peek at the code up through the first lcdout routines? You might try . . .LCDOUT 254,1, "MyString"
That should clear the LCD and print MyString on line 1