Try your code in step-by-step mode.
Make sure that each piece of code you write, works properly before add more pieces.
The MESSAGE: is a part to be rewritten by something like lcd_puts function.
Test the "peripheral" code with a simple main and when that peripheral works, then add the next function, test ...

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If you write down the peripherals you have to use and the way to config/initialize/work each of them, then the solution comes naturally.