Serin serout problem

[lerameur]

hehehe, yes well that 2.0 Mhz crystals cost some hours too Grrrrr

Manchester encoding is working good. I also saw on previous post that other where trying to remove errors in the transmition so the wireless could be almost full proof. I saw the shiftin function was used in one case.

When I ordered these encoders, , I did not know there was different types of encoding (serial , parallel). Maybe one day I will find use for them.
k

[lerameur]

xtal config bits ?

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

Do I need to add this line too ?
@ DEVICE PIC16F877,HS_OSC ' Use PIC16F877 and HS Oscilator

Why didn,t i need to add this when using the pic16F88??

[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.

[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.