Serin serout problem

[skimask]

xtal config bits ?

isn't it this line I had in my code:
DEFINE OSC 20 'use external 20mhz crystal

Nope, that DEFINE just tells PBP what sort of timing to use when it compiles. For example, if you defined 4mhz, a pause 1000 would have x number of delay statements (or loops or whatever). If you define 20mhz, PBP will automatically change that X number to 5 times the number of delay statements (or loops or whatever). The real explanation is towards the end of the PBP manual.

For checking your xtal config bits, you'll either want to check you programmer's config bit settings (which you'd probably do right before you hit the program button), or start adding config lines in your code.
For example, here's a bit (ok, actually it's all of them plus explanations below it of what each register does and how to use it) of config's for one of my projects using a PIC18F4620:

@ __CONFIG _CONFIG1H, _OSC_HSPLL_1H & _FCMEN_OFF_1H & _IESO_OFF_1H
@ __CONFIG _CONFIG2L, _BOREN_OFF_2L & _PWRT_ON_2L
@ __CONFIG _CONFIG2H, _WDT_OFF_2H & _WDTPS_32768_2H
@ __CONFIG _CONFIG3H, _LPT1OSC_OFF_3H & _MCLRE_ON_3H & _PBADEN_OFF_3H & _CCP2MX_PORTC_3H
@ __CONFIG _CONFIG4L, _XINST_OFF_4L & _STVREN_OFF_4L & _LVP_OFF_4L & _DEBUG_OFF_4L

@ __CONFIG _CONFIG5L, _CP0_OFF_5L & _CP1_OFF_5L & _CP2_OFF_5L & _CP3_OFF_5L
@ __CONFIG _CONFIG5H, _CPB_OFF_5H & _CPD_OFF_5H
@ __CONFIG _CONFIG6L, _WRT0_OFF_6L & _WRT1_OFF_6L & _WRT2_OFF_6L & _WRT3_OFF_6L
@ __CONFIG _CONFIG6H, _WRTC_OFF_6H & _WRTB_OFF_6H & _WRTD_OFF_6H
@ __CONFIG _CONFIG7L, _EBTR0_OFF_7L & _EBTR1_OFF_7L & _EBTR2_OFF_7L & _EBTR3_OFF_7L
@ __CONFIG _CONFIG7H, _EBTRB_OFF_7H

;----- CONFIG1H Options --------------------------------------------------
;_OSC_LP_1H,_OSC_XT_1H,_OSC_HS_1H,_OSC_RC_1H,_OSC_ EC_1H,_OSC_ECIO6_1H,_OSC_HSPLL_1H,_OSC_RCIO6_1H,_O SC_INTIO67_1H,_OSC_INTIO7_1H,_FCMEN_OFF_1H,_FCMEN_ ON_1H,_IESO_OFF_1H,_IESO_ON_1H

;----- CONFIG2L Options --------------------------------------------------
;_PWRT_ON_2L, _PWRT_OFF_2L, _BOREN_OFF_2L, _BOREN_ON_2L, _BOREN_NOSLP_2L, _BOREN_SBORDIS_2L, _BORV_0_2L, _BORV_1_2L, _BORV_2_2L, _BORV_3_2L

;----- CONFIG2H Options --------------------------------------------------
;_WDT_OFF_2H, _WDT_ON_2H, _WDTPS_ 1 / 2 / 4 / 8 / 16 / 32 / 64 / 128 / 256 / 512 / 1024 / 2048 / 4096 / 8192 / 16384 / 32768 _2H

;----- CONFIG3H Options --------------------------------------------------
;_MCLRE_OFF_3H, _MCLRE_ON_3H, _LPT1OSC_OFF_3H, _LPT1OSC_ON_3H, _PBADEN_OFF_3H, _PBADEN_ON_3H, _CCP2MX_PORTBE_3H, _CCP2MX_PORTC_3H

;----- CONFIG4L Options --------------------------------------------------
;_STVREN_OFF_4L, _STVREN_ON_4L, _LVP_OFF_4L, _LVP_ON_4L, _XINST_OFF_4L, _XINST_ON_4L, _DEBUG_ON_4L, _DEBUG_OFF_4L

;------CONFIG5/6/7 Options not used for code/eeprom protection

[lerameur]

where can I get a tutorial on this,
I checked PBP manual the datasheet of my PIC and I have not seen that. I just want to be able to read what you posted,
1H, 2L 2H etc.. no idea, (and the rest too)
hennnn I feel pretty stupid now

I saw that this is in the file included in the PBP compiler, like INCLUDE "P16F877A.INC"

[SteveB]

where can I get a tutorial on this...

Here is a good starting place: Presetting Configuration Fuses (PIC Defines) into your Program

[lerameur]

Ok thanks for the link

to go back to the A/D conversion.
I read another way to use analog to digital with direct ADC control, and not with adcin , What does that mean ?

[skimask]

Ok thanks for the link

to go back to the A/D conversion.
I read another way to use analog to digital with direct ADC control, and not with adcin , What does that mean ?

Accessing the registers directly, select channel, set pin assignments, set acquisition time, set sampling time, turn module on, start a/d conversion, wait for completion and read the registers.
Again, if ADCIN is working, stay with it. You won't do a lot better with direct access.

[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]

where can I get a tutorial on this,
I checked PBP manual the datasheet of my PIC and I have not seen that. I just want to be able to read what you posted,
1H, 2L 2H etc.. no idea, (and the rest too)
hennnn I feel pretty stupid now

I saw that this is in the file included in the PBP compiler, like INCLUDE "P16F877A.INC"

Check 'Special Features' section of the datasheet, and 'Presetting Config fuses' link above. That should hook you up with all the info you need. It got me straightened out in a hurry.