Interrupted sketch upload results in bricking?

Development Tools IDE 1.x
7

Hi, finally got the Chip Detector sketch working. The chip on Japanimo is ATmega168V-10AU, added the signature to the sketch such as:

 { { 0x1E, 0x94, 0x06 }, "ATmega168V", 16 * kb,       256 },

The 16kb I know, the 256 bootloader size I just guessed based on the rest of the chips. The output of the detection is the following:

Atmega chip detector.
Entered programming mode OK.
Signature = 1E 94 06 
Processor = ATmega168V
Flash memory size = 16384
LFuse = D2 
HFuse = DE 
EFuse = F8 
Lock byte = FF 
Clock calibration = B3 
Bootloader in use: Yes
EEPROM preserved through erase: No
Watchdog timer always on: No
Bootloader is 256 bytes starting at 3F00

Bootloader:

3F00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
3F10: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
3F20: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
3F30: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
3F40: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
3F50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
3F60: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
3F70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
3F80: 57 00 E8 95 00 91 57 00 01 70 01 30 D9 F3 01 E1 
3F90: 00 93 57 00 E8 95 32 96 02 97 09 F0 C7 CF 10 30 
3FA0: 11 F0 02 96 E5 CF 11 24 5C CF F8 94 FF CF 80 00 
3FB0: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 
3FC0: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 
3FD0: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 
3FE0: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 
3FF0: FF FF FF FF FF FF FF FF FF FF FF FF 07 04 06 B3 

MD5 sum of bootloader = C5 0A 34 A2 77 92 2E D2 70 BF 65 70 2B 7C 3F 4F 

First 256 bytes of program memory:

0: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 
10: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 
20: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 
30: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 
40: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 
50: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 
60: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 
70: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 
80: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 
90: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 
A0: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 
B0: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 
C0: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 
D0: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 
E0: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 
F0: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF

Some observations:

  • there was uploaded sketch on this board before, does it mean that it got erased?
  • the bootloader area starts with a bunch of 00s, is that normal? Or does that show that there's a problem?
  • the fuse values are quite different from what I used before, the settings I got from this blog post.

Any recommendation to get this board working again? :slight_smile: