In SX Microcontrollers, SX/B Compiler and SX-Key Tool, johncouture wrote:

Ok, fair enough.  I do have a couple of questions about how to convert code from BS2P to SX/B that I hope the forum can help me with.  

 

For those that want to follow along, some background.  

 

1-Wire Weather Station

 

In Feb 2002 Jon Williams wrote an article "[url=http://www.parallax.com/dl/docs/cols/nv/vol3/col/nv82.pdf]Weather on the Wire" [/url]on how to read the 1 wire data from an [url=http://www.aagelectronica.com/]AAG Weather Station [/url].  These nifty devices are about $80 and contain an anenometer along with wind direction and temperature sensors.  The article referenced an Apr 2001 article entitled "[url=http://www.parallax.com/dl/docs/cols/nv/vol2/col/nv72.pdf]Searching the 1-Wire Bus[/url]" that showed how to search the 1-Wire network for all available nodes.  That article was written for the BS2P.

 

Updating to today's world

 

For those of you that missed it, the Jan 2006 issue of Nuts & Volts has a great article by Jon Williams on generic input/output routines using SX/B (i.e. TX_OUT, RX_BYTE, etc).

 

As you may have guessed by now, I got one of those weather stations for Christmas and am trying to get it working (I REALLY don't want to have to buy an BS2P when I have a drawerful of SX chips). 

 

Ok, down to business.  The entire listing is attached for those interested.  I updated the BS2P 1-Wire search code to the best of my ability.  Some of the techniques in the BS2P code are foreign to me. Thus:

 

'====================================

Question #1:

Under the SearchDone: label it has:

 

 <FONT face="Courier New">  FOR offset = 0 TO 7
      WRITE (addr + offset),tempROM(offset) 
      ' write serial number to caller
   NEXT
'=====================================</FONT>

 

SX/B does not have a WRITE command nor does it allow compound statements.  Presumably this is supposed to update a memory location with a value.

 

I was thinking something like:

 

   FOR offset = 0 to 7

      temp4 = @addr + offset

      @temp4 = tempROM(offset)

   NEXT 

 

but the compiler didn't like that.  How do you update a location in memory using an offset?

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