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NOT ENOUGH RAM

 
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ccmcca
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NOT ENOUGH RAM
PostPosted: Mon Oct 25, 2004 12:05 pm     Reply with quote

What i have to do with this error?
Thanks
SherpaDoug



Joined: 07 Sep 2003
Posts: 1640
Location: Cape Cod Mass USA

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PostPosted: Mon Oct 25, 2004 1:17 pm     Reply with quote

1) See how much RAM your chip has.
2) See how much RAM all your variables and data structures take.
3) Allow a little for compiler scratchpad if you are using any complex lines of code.

If it doesn't fit you need to:
1) Use a bigger chip.
2) Use fewer variables, reuse variables, use shorts instead of ints, use smaller buffers etc.
3) Use simpled C lines so the compiled doesn't need so much scratchpad.
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The search for better is endless. Instead simply find very good and get the job done.
PCM programmer



Joined: 06 Sep 2003
Posts: 21708

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PostPosted: Mon Oct 25, 2004 2:01 pm     Reply with quote

And, for most chips in the 16-series, with the PCM compiler you
can enable use of all RAM with the #device *=16 statement, as
shown below:

Code:
#include <16F877.H>
#device *=16     //  <== Add this line, at this exact location.
#fuses XT, NOWDT, NOPROTECT, BROWNOUT, PUT, NOLVP
#use delay(clock = 4000000)
#use rs232(baud=9600, xmit=PIN_C6, rcv=PIN_C7, ERRORS)

//==================================
void main()
{

while(1);
}
ccmcca
Guest







THANKS
PostPosted: Mon Oct 25, 2004 7:35 pm     Reply with quote

Eso era el problema amigos!!!!!!!!!!!!!!!!!!!!!!!!!!


THANKS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Stephanfo



Joined: 28 Nov 2004
Posts: 5

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Thanks, soooooo much
PostPosted: Sun Dec 12, 2004 2:49 pm     Reply with quote

Hello,

I was looking for why I was out of memory with only half of used variable.
And I found this post.

I always asked me for the interest of this option, now I know Wink

Thanks a lot for your help

Stephanfo
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