RE: [avr-gcc-list] Macro to read /write long to eeprom

[Dave Hansen]

From: "Royce Pereira" <address@hidden>
> Hi,
> Is there a macro to read or write a long word (32 bits) to eeprom?
> For the last hour I've been trying to write one unsuccessfully.

Not directly, but you can do something like

  #include <avr/eeprom.h>

  inline void eeprom_write_long(long *dest, long val)
  {
     eeprom_write_block(&val, dest, sizeof(val));
  }

  inline long eeprom_read_long(long *src)
  {
     long retval;

     eeprom_read_block(&retval, src, sizeof(retval));
     return retval;
  }

WARNING: untested code, but it should be close.  Note that (IMHO) 
eeprom_write_block's parameters are backwards, but that's what's been 
provided.

HTH,
  -=Dave