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#include <avr/interrupt.h>
#include <avr/io.h>
#include <avr/eeprom.h>
volatile unsigned char in_loop = 0;
volatile unsigned char complete = 1;
typedef struct {
unsigned char dummy; // Addr. 0, don't use
unsigned char byte1;
} eep_t;
eep_t EEMEM eep = { 0, 0x33 };
#if defined(PROC_attiny25) || defined(PROC_atmega8) || defined(PROC_at90s4433)
ISR(EE_RDY_vect) {
#elif defined(PROC_attiny2313)
ISR(EEPROM_READY_vect) {
#else
ISR(EE_READY_vect) {
#endif
// EEPROM cell written, reset EERIE
EECR &= ~_BV(EERIE);
complete = 1;
}
int main(void) {
sei();
do {
in_loop = 1;
if(complete == 2) {
EEDR = 0x66;
EEARL = 0x01;
#if !defined(PROC_at90s4433) && !defined(PROC_attiny2313)
EEARH = 0x00;
#endif
EECR = 0x0c; // set EERIE and EEMWE
EECR = 0x0a; // set EERIE and EEWE
complete = 0;
}
} while(1); // do forever
}
// EOF
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