LCD problem with 16F628

[n0oxv]

Melanie,
You are tooo good !

[Melanie]

>"Melanie, You are tooo good !"

Yup, that's what all the boys say!


You may or may not like what I'll report...

1. Taking your posted LCD_HEX file and burning a PIC16F628 with it produces all Black Squares just as you say. So here I confirm the same result. I do notice one anomaly - your HEX of the same program is twice the size of mine.

2. But, taking your posted LCD_BAS file, renamed it LCD1, compiled it (with absolutely NO changes) with PBP2.46, burned the same PIC and it WORKS!!!! See appended picture. Try it with my HEX which I named LCD1.HEX.

I used the compile line...

PBP -p16F628 LCD1 -v

Therefore, either...

1. Your posted HEX file is not a true compilation of the posted BAS file...
2. You are using a very old compiler which may have problems...
3. Your compiler is corrupt...
4. You are using some external IDE (such as MCS) which is causing you a problem.
5. If you are compiling using Microchips MPASM the version you have may be old or corrupt.
6. Or any other reason such as alien invasion of your neighbourhood...

[ngeronikolos]

Thanks Thanks....Thanks Melanie,

I do not have words to thank you...

I will try it and I will inform you.

[CuriousOne]

Bumping an 10 year old tread....

I also have problems with 16F628A and 1602 LCD

PCON=%00001011 'set intosc to 4mhz
DEFINE OSC 4
DEFINE LCD_DREG PORTB
DEFINE LCD_DBIT 0
DEFINE LCD_RSREG PORTB
DEFINE LCD_RSBIT 4
DEFINE LCD_EREG PORTB
DEFINE LCD_EBIT 5
DEFINE LCD_BITS 4 
DEFINE LCD_LINES 2
DEFINE LCD_COMMANDUS 1500
DEFINE LCD_DATAUS 44 
pause 500

LCDOUT $FE, "SACDELI   "
PAUSE 5000
END

PORTB.0 - PORTB.1 are connected to D4-D7 pins of LCD
PORTB.5 is connected to RS pin
PORTB.6 is connected to E pin.

All hardware 100% verified and working. But still no display.

[HenrikOlsson]

Your code says RS is PortB.4 while you say it's PortB.5.
Your code says E us PortB.5 while you say it's PortB.6.

/Henrik.

[CuriousOne]

Thanks, fixed that, but still does not works...

[mehmetOzdemir]

can you share your config settings?