Cannot send data to 16x2 LCD via PIC18F45k22 Micro Controller (display showing black boxes)

Hello,

My 16x2 LCD displays black boxes when I hook it up according to the attached wiring diagram.

I am using a PIC18F45k22 development board by Mikroelectronika and using their MikroC pro for PIC software for code development

Attached is also my code.

What am I doing wrong?

View attachment 160667


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Cannot send data to 16x2 LCD via PIC18F45k22 Micro Controller (display showing black boxes)