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Error in 24512.c driver

 
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Neckruin



Joined: 17 Jan 2006
Posts: 66

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Error in 24512.c driver
PostPosted: Tue Dec 12, 2006 7:19 am     Reply with quote

Hi all,
I've been trying to use the 24512.c driver with a 24LC512 serial EEPROM from MicroChip and I have detected a problem.
When doing more than one single byte write into the memory, only the first byte was correctly written. I have modified the code of the write_ext_eeprom() function and now it works.
This is the new code for that function:
Code:
void write_ext_eeprom(int16 address, int8 data) {
   int1 status;
   int8 add1;
   int8 add2;
   
   add1 = make8(address, 1);
   add2 = make8(address, 0);
   i2c_start();
   i2c_write(EEPROM_WRITE);
   i2c_write(add1);
   i2c_write(add2);
   i2c_write(data);
   i2c_stop();
   i2c_start();
   status=i2c_write(EEPROM_WRITE);
   while(status==1)
   {
      i2c_start();
      status=i2c_write(EEPROM_WRITE);
   }
   i2c_stop(); // I added this line
}


See you all,

Juanma
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