Hi everyone. I'm truly 'up against the wall'. I simply CANNOT get my 16x2 LCD to respond to my C programs. I have searched the internet, 8052.com, etc., without substantial results (i.e., no complete example C programs, only snippets with missing library files, missing MAIN(), etc.).

My information: 80C51 @ 11.059 MHz, Keil eval. compliler. LCD: connected 8 bit to port P1, E at P3.4, RS at 3.2, R/W on P3.3. LCD is UC162A 44780-based.

*But*...
1. The LCD/circuit works with an example assembly language program!
2. I've written 7-8 C progs, using delays, check busy bit, both, etc., no initialization on LCD!
3. Other programs in C test/compile/run fine on 8051.

Symptoms:
1. No activity whatsoever on LCD, despite anything I do in C...works great in assembly.
2. My progs. simulate o.k. in Keil.

Please, I would GREATLY appreciate your assistance..or complete working example code..I've spent countless hours working on this! I don't even have working code so that I can compare and deduce my bugs.

Thanks so much!
Marty :)