Serin serout problem

[mister_e]

Yup it's just another way to do the same thing... it's just a little less code hungry

[lerameur]

Ok still working on the same pic.

I finally got the oscillation going.
I wrote this program: (I have two questions)
1) why does the DEFINE OSC 20 not work in this case
2) In the program i wrote, NOTHING appears on the LCD
Can I put all the ldout pin on the B port ?
Pin 11 LCD on to PIN 25
Pin 12 --> Pin 26
Pin 13 --> Pin 27
Pin 14 --> Pin 28

anything software for the lcd that i dont have to do with the Pic 16f88 ?

@ DEVICE PIC16F876A , HS_OSC , WDT_OFF , PWRT_ON , BOD_ON , LVP_OFF , PROTECT_OFF
'HS 20mhz, watchdog off, powerup timer on, mclr external, brown out detect on, low volt program off , code protect off

DEFINE LCD_DREG PORTB ' Set LCD Data port
DEFINE LCD_DBIT 4 ' Set starting Data bit (0 or 4) if 4-bit bus
DEFINE LCD_RSREG PORTB ' Set LCD Register Select port
DEFINE LCD_RSBIT 1 ' Set LCD Register Select bit
DEFINE LCD_EREG PORTB ' Set LCD Enable port
DEFINE LCD_EBIT 0 ' Set LCD Enable bit
DEFINE LCD_BITS 4 ' Set LCD bus size (4 or 8 bits)
DEFINE LCD_LINES 2 ' Set number of lines on LCD
DEFINE LCD_COMMANDUS 2500
DEFINE LCD_DATAUS 250
DEFINE CHAR_PACING 2000

Pause 1000 ' Wait 1 second

loop:

lcdout $FE,1, "Number: ", dec 55
pause 100
goto loop
end

Have you got PGM (RB4? RB5?) pulled up or down, whichever it is?
I use them for my LCDout....

[skimask]

Ok still working on the same pic.

1) why does the DEFINE OSC 20 not work in this case
2) In the program i wrote, NOTHING appears on the LCD
Can I put all the ldout pin on the B port ?

anything software for the lcd that i dont have to do with the Pic 16f88 ?

end

1) What do you mean by OSC 20 doesn't work? Compile error? Timing wrong?

2) yes, you can put the LCD data lines anywhere you CAN define them.
Did you try an led blink yet?

PIC16F876A and 16F88 should operate the same as far as PBP is concerned.
Why not use port D like usual?

[lerameur]

What do you mean by OSC 20 doesn't work? Compile error? Timing wrong?
No oscillation on the scope... thast why

2) yes, you can put the LCD data lines anywhere you CAN define them.
Did you try an led blink yet?
I will try it

PIC16F876A and 16F88 should operate the same as far as PBP is concerned.
Why not use port D like usual?
NO port D on that chip, I tried portC 4 to 7 , no difference

[skimask]

What do you mean by OSC 20 doesn't work? Compile error? Timing wrong?
No oscillation on the scope... thast why

2) yes, you can put the LCD data lines anywhere you CAN define them.
Did you try an led blink yet?
I will try it

PIC16F876A and 16F88 should operate the same as far as PBP is concerned.
Why not use port D like usual?
NO por D onthat chip, I tried portC 4 to & , no differnce

You said in post 236 you got the oscillation going.

Port D - DOH!!!! I knew that...I was just checking you...yeah that's it, just checking...

[lerameur]

yes it does oscillate
when I put thisline:

@ DEVICE PIC16F876A , HS_OSC , WDT_OFF , PWRT_ON , BOD_ON , LVP_OFF , PROTECT_OFF

and not:
DEFINE OSC 20

[lerameur]

led on RC3,.. do not work

@ DEVICE PIC16F876A , HS_OSC , WDT_OFF , PWRT_ON , BOD_ON , LVP_OFF , PROTECT_OFF
'HS 20mhz, watchdog off, powerup timer on, mclr external, brown out detect on, low volt program off , code protect off

INCLUDE "modedefs.bas"

DEFINE LCD_DREG PORTC ' Set LCD Data port
DEFINE LCD_DBIT 4 ' Set starting Data bit (0 or 4) if 4-bit bus
DEFINE LCD_RSREG PORTB ' Set LCD Register Select port
DEFINE LCD_RSBIT 1 ' Set LCD Register Select bit
DEFINE LCD_EREG PORTB ' Set LCD Enable port
DEFINE LCD_EBIT 0 ' Set LCD Enable bit
DEFINE LCD_BITS 4 ' Set LCD bus size (4 or 8 bits)
DEFINE LCD_LINES 2 ' Set number of lines on LCD
DEFINE LCD_COMMANDUS 2500
DEFINE LCD_DATAUS 250
DEFINE CHAR_PACING 2000

TRISC =0

Pause 1000 ' Wait 1 second

loop:

lcdout $FE,1, "Number: ", dec 55
pause 100

portc.3=0
portc.3=1
pause 300
portc.3=0

goto loop

end

[skimask]

yes it does oscillate
when I put thisline:

@ DEVICE PIC16F876A , HS_OSC , WDT_OFF , PWRT_ON , BOD_ON , LVP_OFF , PROTECT_OFF

and not:
DEFINE OSC 20

DEFINE OSC 20 is for PBP and it's internal compiler and setting up various timing loops; it doesn't set any config bits anywhere in the PIC.

Leave both in there.