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Reading Long value from EEPROM no longer working...

 
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seidleroni



Joined: 08 Sep 2008
Posts: 21

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Reading Long value from EEPROM no longer working...
PostPosted: Mon Oct 27, 2008 9:30 am     Reply with quote
Here is the function I use to read a 'Long' value from the EEPROM:
Code:

long ReadLong(int nAddr)
{
   int i;
   long data;

   for (i = 0; i < 2; i++)
      *(&data + i) = read_eeprom(i + nAddr);

   return (data);
}


It used to work in an old compiler version (last 3.x compiler version published). Now I am using the latest compiler version (4.081). The 2 values in the EEPROm which it is looking at are:

At address 27: Value is 152
At address 28: Value is 08

Long value = 256 * (08) + 152 = 2200, but when I put in a printf statement to find out what value its finding, it tells me that the value is just 152. Is there something wrong with the function, or is this a CCS issue?
drh



Joined: 12 Jul 2004
Posts: 192
Location: Hemet, California USA

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PostPosted: Mon Oct 27, 2008 9:38 am     Reply with quote
This is from the readme file:
Quote:

Users that have old code with expresions of the form:
*(&data + i)
need to change them to:
*((int8 *)(&data) + i)
A compiler change was made to be ANSI compliant.

_________________
David
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