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Using ROM for Look Up Table "Too many subscripts"

 
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john.adw



Joined: 28 Jul 2014
Posts: 1

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Using ROM for Look Up Table "Too many subscripts"
PostPosted: Mon Jul 28, 2014 6:50 am     Reply with quote
Hello everyone !

I have got a problem and I don't know how to fix it (I use CCS V4.024)

I would like to use ROM in order to save data (array) as Look up table.
In my program, I use a function to copy a part of this Look up table in a smaller array.

I have the following errors : "Too many subscripts" and I don't understand why.

Code:
#include "33EP512MU810.h"
#DEVICE ICD = true, ICD = 3

#FUSES NOPROTECT, NOWRT, NOGSSK, NOAPLK, NOWDT, noPUT,HS, CKSFSM, PLLWAIT, NOIOL1WAY, noIESO, NOJTAG,debug

double tab2[1][2]={0,0};

void fun(rom *tab1, double tab2[1][2]){
      int j;
      for(j=0;j<2;j++){
                tab2[0][j]=tab1[0][j];
      }
}
   


void main(){

double const tab1[2][2]={{1.2,2.2},{1.7,5.7}};
double tab2[1][2]={0,0};
fun(tab1,tab2);
   
}





I don't do more subscripts because I want a smaller array.

Thanks for your help !
ckielstra



Joined: 18 Mar 2004
Posts: 3680
Location: The Netherlands

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PostPosted: Mon Jul 28, 2014 11:11 am     Reply with quote
To find out what's wrong you could even simplify the code further, but one major problem you are having is that compiler version 4.024 is so very bad that I'm sure you will run into problems that can't be fixed.
CCS has the habit that with every new release they bring out a lot of 'test' versions but forget to tell you this is for test purposes only. Only from around 4.074 the compiler started to work again. With the old age of your compiler I suggest you upgrade to one of the newer and proven reliable releases.
Ttelmah



Joined: 11 Mar 2010
Posts: 19504

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PostPosted: Mon Jul 28, 2014 12:27 pm     Reply with quote
Other problems:.
A rom pointer needs a type (in this case double). Otherwise it doesn't know how large the objects it points to 'are'.
A single dimensional pointer, can't access a multi dimensional array (this is what it is complaining about).
However the odds of it working with 4.024 are basically zero.

Have just checked back on older versions, and use of pointers to ROM, is _not_ documented in 4.027 (the earliest V4 compiler I have), and is not in the readme. It first appears about 20 versions later, and didn't work properly for about the same number of versions after this.
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