i was pretty pleased with my self when i got my 20x4 lcd working in 8-bit mode last night..
i'm not having as much luck tonight..
i'm using a tiny2313 and winAVR. PORTB controls the data pins, and bits 4, 5, and 6 of port D are the RS, R/W, and Enable lines.
I haven't changed anything in hardware, all data pins are still connected. my results vary from random oo's and arrows, to blank screens, to nothing at all ( just the black bars) and there doesn't seem to be a pattern..
i'm not sure if i'm sending my nibbles correctly, i should send the MSB on the portB pins 4-7, and then the LSB on the same pins, correct?
i've attached my code, any pointers would help