Fixed Filename Uploader - Fusebits SOLVED! about arduino_sketches HOT 13 CLOSED

I had a discussion with someone else about this recently. His solution was as follows:

if (strcmp (currentSignature.desc, "ATtiny85") == 0)
  {
  writeFuse (0xE2, writeLowFuseByte);
  writeFuse (0xD5, writeHighFuseByte);
  writeFuse (0xFF, writeExtendedFuseByte);
  } 

You could do something similar (of course, with a different board name ("ATmega2560"), and appropriate fuse byte values).

I think I would put that code around line 1371 of the sketch, eg. in your case:

  // now fix up fuses so we can boot    
  if (errors == 0)
    {
    updateFuses (true);

    if (strcmp (currentSignature.desc, "ATmega2560") == 0)
      {
      writeFuse (0xFF, writeLowFuseByte);
      writeFuse (0xD8, writeHighFuseByte);
      writeFuse (0xFC, writeExtendedFuseByte);
      } 

    }

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Thats it!

thank you very much for your help!
everything runs now greatful

Wolfram.

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Does a chiperase clear everything?

Yes.

Also eeprom?

No.

Since you have changed the fuse to require a 16 MHz clock, do you in fact have a 16 MHz external clock when you try to reflash?

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But If i flash the same Board again it doesnt Run anymore.

You can't program it, or it programs OK (no error messages) but the board doesn't run?

And, to be clear, it runs when you program it the first time?

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See:

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Now i found the reason and the solution:

The HI Fuse must have D9 instead of D8 ! = BOOTRST
This doesn`t have to be set, because of no bootloader!
Now i can flash every board, even it was flashed before!

• SOLVED -

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