trying to use a lcd20x4 with NUCLEO-F401RE throgh i2c comminication using a PCF8574T.

I'm trying to write on a LCD named 2004A. The problem is that the row i write are mixed up.

I attached a photo of the result and the two main file of the project.

Thanks for yout help.

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ST Employee

Hello @EnricoR,

Welcome to the Community :beaming_face_with_smiling_eyes:

You find some modification in the files bellow with comments.

Foued

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ST Employee

Second file.

Foued

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Associate

Hello! Thanks for yout help.

I tried to run the code with you modification but the result is even wroste. This time it display only the first row, always with error.

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