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#rom

 
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Calamar



Joined: 07 Sep 2003
Posts: 60
Location: Buenos Aires (Argentina)

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#rom
PostPosted: Fri Jul 28, 2006 6:46 am     Reply with quote
From CCs manual:

Quote:
#ROM

address is a ROM word address, list is a list of words separated by commas

Purpose:
Allows the insertion of data into the .HEX file.
In particular, this may be used to program the '84 data EEPROM, as shown in the following example.



What mean '84 ? 16f84 ?

It is possible a best way to this:

Quote:
#define V_TOTAL 0xF00020
// A address defined ponting to eeprom
#ROM V_TOTAL= { 0x0000, 0x0000}


#define V_TOTAL_DIR 0x00
// Another define pointing to the same eeprom address
int32 init_read_eeprom(void)
{
int32 temp32;
temp32 = read_int32_eeprom(V_TOTAL_DIR);
return temp32;
}

_________________
Best Regards
Daniel H. Sagarra
La Plata (Argentina)
Ttelmah
Guest
PostPosted: Fri Jul 28, 2006 3:00 pm     Reply with quote
Yes. The example is for the 16F84.
Your code has a problem with the addresses. The EEPROM is at location 0xF00000, in the 'program' map for the 18 chips. Your initial code puts the bytes at address F00020.Then tries to retrieve the bytes from address F00000...
V_TOTAL_DIR, needs to be 0x20, to access the same locations.

Best Wishes
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