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flag eeprom support

pull/1/head
Olaf Rempel 9 years ago
parent
commit
b2c6dc35ce
1 changed files with 16 additions and 10 deletions
  1. +16
    -10
      main.c

+ 16
- 10
main.c View File

@@ -26,9 +26,8 @@

/*
* atmega8:
* Fuse E: 0xfa (512 words bootloader)
* Fuse H: 0xdd (2.7V BOD)
* Fuse L: 0xc2 (8Mhz internal RC-Osz.)
* Fuse H: 0xda (512 words bootloader)
* Fuse L: 0x84 (8Mhz internal RC-Osz., 2.7V BOD)
*
* atmega88:
* Fuse E: 0xfa (512 words bootloader)
@@ -57,6 +56,8 @@
#error MCU not supported
#endif

#define EEPROM_SUPPORT 1

/* 25ms @8MHz */
#define TIMER_RELOAD (0xFF - 195)

@@ -137,9 +138,12 @@ const static uint8_t chipinfo[8] = {

(APP_END >> 8) & 0xFF,
APP_END & 0xFF,
#if (EEPROM_SUPPORT)
(E2END >> 8 & 0xFF),
E2END & 0xFF
#else
0x00, 0x00
#endif
};

/* wait 40 * 25ms = 1s */
@@ -176,6 +180,7 @@ static void write_flash_page(void)
boot_rww_enable();
}

#if (EEPROM_SUPPORT)
static uint8_t read_eeprom_byte(void)
{
EEARL = addr;
@@ -200,6 +205,7 @@ static void write_eeprom_byte(uint8_t val)
#endif
eeprom_busy_wait();
}
#endif /* EEPROM_SUPPORT */

ISR(TWI_vect)
{
@@ -256,10 +262,10 @@ ISR(TWI_vect)

} else if (data == MEMTYPE_FLASH) {
cmd = CMD_WRITE_FLASH;
#if (EEPROM_SUPPORT)
} else if (data == MEMTYPE_EEPROM) {
cmd = CMD_WRITE_EEPROM;
#endif
} else {
ack = (0<<TWEA);
}
@@ -289,12 +295,12 @@ ISR(TWI_vect)
ack = (0<<TWEA);
}
break;
#if (EEPROM_SUPPORT)
case CMD_WRITE_EEPROM:
write_eeprom_byte(data);
bcnt++;
break;
#endif
default:
ack = (0<<TWEA);
break;
@@ -329,11 +335,11 @@ ISR(TWI_vect)
case CMD_READ_FLASH:
data = pgm_read_byte_near(addr++);
break;
#if (EEPROM_SUPPORT)
case CMD_READ_EEPROM:
data = read_eeprom_byte();
break;
#endif
default:
data = 0xFF;
break;

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