The lcd_interconnection test is a very helpful application to test all connections to the LCD (details are explained in the README.txt)
Best Regards, Thorsten.
Thanks for the help, guys! I’m going through these great suggestions now. I’m convinced it’s a wiring issue, because I rewired it after posting and now it flashes black and goes out. I’ll post my results soon.
I’ve uploaded the main.hex from lcd_interconnection_test_v1b.zip found on: http://www.ucapps.de/mios_download.html . I have performed all the pin tests, and my J15 header passes all 11 tests except the one for RS. I get 0.89v for the RS header, which connects directly to pin 28 of the PIC, which also reads this same 0.89v.
Once again I’m stuck! I have no idea what is causing the PIC to produce only 0.89v at pin 28. I’d love to hear some suggestions!
Sounds like a short between RS and something else…
OK, I’ve just got back from vacation. I’ll check out the single suggestion I received today. thanks stryd_one