config help please?

[karenhornby]

Hi all, and before I go any further I want to say thanks to everyone who has helped me before
The previous problem I had about trying to work a serial LCD, I've left that to one side for the moment, however for now... could anyone would be so kind as to look over my code and tell me what they see as obvious ( and not so obvious) mistakes.
The bits I'm not sure about is the config fuses/settings. I'm going to make a seperate mini board to plug a pickit 2 into with basically a 5v psu, 18 pin socket and the pic and any other bits needed like diode, resistor etc.
So ALL the programming will be done OFF the main board and all pins are being used as inputs or outputs only! (All digital)

Ra2
RA3
RA4
RA5 are ALL inputs (digital)

RA1
RA0 outputs to transistor switches
RB6
RB7 Outputs to LED's
so basically all pins are outputs apart from ra2,3,4 and 5 which are inputs.

the pic will be a 16F88
2 X DS18B20 dq from each going to 2 seperate pins ( porta.4 and porta.5 )
LCD 4 bit mode
RS is on portB0
E is PORTB1
Data pins PORTB.2 LCD D7
Data pins PORTB.3 LCD D6
Data pins PORTB.4 LCD D5
Data pins PORTB.5 LCD D4

Really not sure about ALSO the bits parked with ****** in the code i.e. ansel adcon trisa trisb and so on, (or the config fuses) it will be using an 8Mhz ceramic resonator as thats what I've got handy
The other thing I'm not sure about is the actual DS18B20's I dont know if I can have 2 each on a different port and address them as I have done, and IF I can,
How do I set this? DS18B20_12bit CON %01111111 ; 750ms, 0.0625°C resolution?
Sorry it wouldn't let me attach it as code (too big)

[mackrackit]

When setting the TRIS? =%????????
0 is for output
1 is for input

This best explains about setting things to digital.
http://www.picbasic.co.uk/forum/showthread.php?t=561

And when using a resonator the config would be HS.

[karenhornby]

Think i MIGHT have that sorted now

    CCP1CON = %00000000         ; Disable CCP Module
    SSPCON.5 = 0                ; Disable SSP Module
    TXSTA.5 = 0                 ; Disable AUSART Tx
    RCSTA.7 = 0                 ; Disable Serial Port
    CMCON =   %00000111          ; Turn off comparator
    TRISA =    %00111100
    TRISB =    %00000000
    ANSEL =   %00000000  ; Set analog ports to digital mode 
    ADCON1 = %00000111 

Port B is all outputs PortA is where I MAY be going wrong, RA0 in, RA1, in,
RA2 out, RA3out, RA4 out RA5 out 
RA6 and RA7 clock/resonator not sure what they should be?

Although I'm not certain about the TRISA as pins RA6 and RA7 have the resonator connected and not sure if I should have that configured there or not... but every little teaches me more

[mackrackit]

If memory serves me for your chip. It has an internal OSC option. When using the internal then A6 and A7 can be used for I/Os. You are using an external OSC . So your TRIS for this now will only have six bits. PINs 0 through 5.

[karenhornby]

If memory serves me for your chip. It has an internal OSC option. When using the internal then A6 and A7 can be used for I/Os. You are using an external OSC . So your TRIS for this now will only have six bits. PINs 0 through 5.

AHH now that makes sense.. I just wasn't sure what I should do with the pics when using them as ext OSC
Thanks

Apart from that, does the code look ok?
and any ideas on how to set the higher resolution of the ds18B20 with the configuration I have?

[mackrackit]

From memory again. I think the USART on this chip is PORTB.2 and PORTB.5?
And I think PORTA.5 is MCLR.
Check the data sheet to be sure, but I think those parts are wrong in your code.
As for the ds18B20. I can not help with this.