Problems with 18F458

[Ingvar]

100ms delay before you initialize your display could be too short. Many displays needs alot more. Try a couple of seconds and see if that makes it work.

[Russian]

No, I tried everything, removed the caps, set the most of the conf. bits to be negative, moved the osc. closer, increased the init delay (though it has worked well with 100 with the same display but a PIC16F84)....nothing helps, it still writes "!" in the start of the first line instead of the "Hello world!"

[Russian]

Btw. here is a picture of my cfg.

[Felch]

Switch OFF LVP and BOR (brown-out-reset). If does not help, send your full code, i'll try to simulate it.
Btw, do you use 8 or 4-bit interface to LCD?

PS. Are you sure your code worked and that you ported it correctly? Type of LCD is also interesting.
PS/1. X-tal must be placed right next to uP, no wires!

[Russian]

LVP & BOR off, now it is only the cursor that blinks in the start of the line, no letters, I have my x-tal next to the uP no caps, I use 4 bit connection, with the RW pin grounded (thats why the initialize delay is 100, I did that for decreasing the number of pins used on my old PIC). Well, the display uses a normal 44780 controller it has the normal japaneese signs in the end of the ASCII table replaced with kyrillic letters, since I bought the LCD in Russia, there are really not much more about the display. Btw. I noticed, that when I short the x-tal pins with my finger, the text gets on it's right place, but as soon as I remove my finger it gets back to the blinking at the start of line 1.

Here is my full code and the LCD library (not mine, I only edited it).

[Felch]

Btw. I noticed, that when I short the x-tal pins with my finger, the text gets on it's right place, but as soon as I remove my finger it gets back to the blinking at the start of line 1.

Haa, this might explain everything! What's your clock freq.? Too high possibly. Anyway, I'll take a look at the code now.

Did you know that sub delay100 actually delays only 1,4 ms!!! ? Otherwise code works OK (on PIC18F452). You must add delays:
- before initializing LCD, about 100mS (use MPLAB-s simulator to check time)
- delay about 2mS after sending cmd or data to LCD (in the lib file)
See code.

[Russian]

Sorry, but i have never tried to use MPLAB so I don't know how to use the simulator =( But, that delay, you added in the end of the LCD.lib file, there stands that it is written for an 11,0592MHz clock how should I handle that? Anway, I tried to compile the program and run it, well there stands a 0 in the end of line1 and there stands something wird in the end of line 2...And, btw. how do I make that 100mS delay before init (I am a almost total lost, especially when things don't work)? Just add a loop that takes your routine 100 times?

Thanks for great responding!!!