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Yup, from the manual:


Could this be an issue?


Robert


EDIT: I would try one last thing with Dave's code, add PAUSE 250 before every write to the LCD, just to eliminate that possibility.

I think the LCDs that googled up for TM202 were Tienma. None of them were TM202T or S. It looks like these are custom made, specs could be anything.

I suggest contacting Tienma and asking for a...

On my lcd, I adjust contrast with the potentiometer on pin V0.

Robert

You might want to put a resistor on RESET pin, at least 1K.

Robert

Start reading at p. 33.

Www.akizukidenshi.com/download/ds/sitronix/st7032.pdf

Robert

Look at I2C commands in PBP manual. You are missing DEFINEs.

Robert

Add PAUSE 250 before Main, LCD must stabilize.

(Will look at datasheet)

Robert

What manual? Do you have a link?

Robert

You still need VDD to pin 4.

Robert

Yeah, couldn't find anything either.

Try adding a PAUSE 250 before writes to give time to lcd to initialize.

Robert