SX/B RAM to RAM move

John Couture · 2006-02-16 05:48

I think I'm just getting tired.· What I want to do is call a function that will copy 8 bytes from one ram variable to another.· Something like:

'

' variable declarations
DSTemp···· var byte(8)
DSDir····· var byte(8)
DSSpeed··· var byte(8)
SerialNum· var byte(8)
.
.
'

'subroutine call in main program
··· ' program figures out the serial number and stores
··· ' it in SerialNum array
··· copySerialNumber DSTemp·

'

' subroutine definition
copySerialNumber:
···· temp1 = __Param1
···· for temp2 = 0 to 7
········· temp1(temp2) = SerialNum(temp2)
·····next
···· return··

P.S. YEA!· I FINALLY figured out the 1Wire protocol and have got the AAG weather station talking to the SX18.· The above is so that I can optimize the code and be able to fit all four routines (search,temp,speed,dir) into one program (however I'll probably have to use an SX48/52 for the additional memory.

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John J. Couture

San Diego Miramar College

Bean · 2006-02-16 12:07

John,
· Try this:

copySerialNumber:
     temp1 = __Param1
     for temp2 = 0 to 7
          __RAM(temp1) = SerialNum(temp2)
         INC temp1
     next
     return

When you pass an array name to a subroutine you are actually passing it's ADDRESS in the virtual __RAM array.

Bean.

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·

Mike Cook · 2006-02-16 12:09

John,

When you get finished with this I hope you will post in the 'projects' section. Converting the Nuts & Volts article: 'Weather on a Wire' to the SX48/52·has been on my TODO list for a while!

Mike

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John Couture · 2006-02-16 17:43

Thanks Bean!

Yes, I do plan on posting it as soon as I clean it up and insert some meaningful comments.

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John J. Couture

San Diego Miramar College

SX/B RAM to RAM move

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