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-----Original Message-----
From: piclist@picl... [mailto:piclist@picl...] 
Sent: 20 March 2006 18:53
To: piclist@picl...
Subject: [piclist] Digest Number 1326
	There are 4 messages in this issue.

Topics in this digest:

      1. Bit-Banging on multiple pins
           From: "kg4pid" <kg4pid@kg4p...>
      2. RE: Bit-Banging on multiple pins
           From: "Wouter van Ooijen" <wouter@wout...>
      3. Pic Basic Pro
           From: "JCullins" <james_cullins@jame...>
      4. RE: Bit-Banging on multiple pins
           From: "Alan Marconett" <KM6VV@KM6V...>
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Message: 1         
   Date: Mon, 20 Mar 2006 08:20:18 -0000
   From: "kg4pid" <kg4pid@kg4p...>
Subject: Bit-Banging on multiple pins

I have been trying to figure out a way to direct a bit-banging program 
to different pins. I have a project that needs to be able to send 
serial data out different pins that are in turn connected to different 
devices. I also have a program that reads a DS18S20 temp sensor but 
doesn't use any of the serial numbers of the sensor therefore I would 
like to be able to direct the program to look at a different pin to get 
its data from more than one temp sensor. The programs are currently 
hard coded to a paricular pin. How can I change the programs so the 
pins can be changed while the program is running? If I duplicate the 
Bit-Banging program and change the assigned pins it will eat up alot of 
my program space. Any examples would be great.

Thanks Max
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Message: 2         
   Date: Mon, 20 Mar 2006 09:22:12 +0100
   From: "Wouter van Ooijen" <wouter@wout...>
Subject: RE: Bit-Banging on multiple pins

> I have been trying to figure out a way to direct a
> bit-banging program to different pins.

- change the code to use a mask instead of a particular bit, and change
the mask to select a specific pin

- use an external 1-to-N analog switch

Wouter van Ooijen

-- -------------------------------------------
Van Ooijen Technische Informatica: www.voti.nl
consultancy, development, PICmicro products
docent Hogeschool van Utrecht: www.voti.nl/hvu
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Message: 3         
   Date: Mon, 20 Mar 2006 09:47:03 -0600
   From: "JCullins" <james_cullins@jame...>
Subject: Pic Basic Pro

Has anyone used the PIC18f4220 with Pic Basic Pro
I have tried to program it and got the
code error 0008   
40 DIP with 40 pin ZIF adapter used with the PIC16f877 chip.
I was using 
Pic Basic Pro ver 2.46
MeProg ver 3.3
micro studio plus 2.3
Thanks
Jim
	[This message contained attachments]
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Message: 4         
   Date: Mon, 20 Mar 2006 09:19:43 -0800
   From: "Alan Marconett" <KM6VV@KM6V...>
Subject: RE: Bit-Banging on multiple pins

Hi Max,

How about using switch statements?  Put a bit toggle to a different pin
in each case of the switch.

You could also do your toggle with a mask passed to the output routine.
|= with the mask, or &= ~MASK to set or reset a particular bit in a
"shadow" register.

A mask could also be used to select a desired bit from a port read.

Alan  KM6VV

> 
> I have been trying to figure out a way to direct a bit-banging program

> to different pins. I have a project that needs to be able to send 
> serial data out different pins that are in turn connected to different

> devices. I also have a program that reads a DS18S20 temp sensor but 
> doesn't use any of the serial numbers of the sensor therefore I would 
> like to be able to direct the program to look at a different pin to 
> get its data from more than one temp sensor. The programs are 
> currently hard coded to a paricular pin. How can I change the programs

> so the pins can be changed while the program is running? If I 
> duplicate the Bit-Banging program and change the assigned pins it will

> eat up alot of my program space. Any examples would be great.
> 
> Thanks Max
>
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