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Store/read structure to/from eeprom...

 
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Store/read structure to/from eeprom...
PostPosted: Sat May 29, 2004 9:27 am     Reply with quote

I´m trying to write a struct that will "live" in eeprom, will be loaded from eeprom and stored sometimes.

struct eeprom {
int8 table1[64];
int8 table2[64];
int8 table3[64];

int8 speed;
int8 load; ...
...32 config bytes
};

struct eeprom config;

where I´m stuck is at using pointers to access data in the struct.

int16 pointer;
for (index=0;index<=160;index++) {
eeprom_write(..config..don´t know how to access); //write or read
delay_ms(10); // let write cycle to end
}
Darren Rook



Joined: 06 Sep 2003
Posts: 287
Location: Milwaukee, WI

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PostPosted: Sat May 29, 2004 10:28 am     Reply with quote

how about this:

Code:

int8 *pointer;
int8 index;
int8 eeprom_address=0;

pointer=&config;

for (index=0;index<=sizeof(config);index++) {
  eeprom_write(eeprom_address++,*pointer);
  pointer++;
}


Also, I don't think you need the delay... I think eeprom_write() will wait until the last write cycle ended.
future



Joined: 14 May 2004
Posts: 330

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PostPosted: Sat May 29, 2004 2:34 pm     Reply with quote

And how about accessing bits individually? like config.speed.bit0..bit7

bit_test(config.speed,0) ?
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