[Uisp-dev] Re: Programing ATtiny13

[don]

On Thu, Oct 20, 2005 at 07:09:32PM -0700,  wrote:
> Using an stk500 system, I cannot program the device, the code always
> read as 0xff, until I tried to write to a fuce byte as a test.  Now
> any access gives "Failed to enter programming mode.".

Things are not as bad as I had thought. It seems I made an error setting
the fuses and it couldn't be programed over SPI.  With AvrStudio4 on
MS-WIn, I was able to use high voltage programming to fix the fuses.

Now that that is fixed, I can write and read the fuses with usip.

I also used AvrStudio to program it with my code.  Now when I try to verify
with uisp, I don't see all ones, or the right code.  This may be a clue
to what is wrong.

Atmel AVR ATtiny13 is found.
Verifying: flash
flash error at address 0x0: file=0x09, mem=0x0c
flash error at address 0x1: file=0xc0, mem=0x94
flash error at address 0x2: file=0x20, mem=0x46
flash error at address 0x3: file=0xc0, mem=0x00
flash error at address 0x4: file=0x1f, mem=0x0c
flash error at address 0x5: file=0xc0, mem=0x94
flash error at address 0x6: file=0x1e, mem=0x63
flash error at address 0x7: file=0xc0, mem=0x00
flash error at address 0x8: file=0x1d, mem=0x0c
flash error at address 0x9: file=0xc0, mem=0x94
flash error at address 0xa: file=0x1c, mem=0x63

The values 0x00, 0x0c, 0x94, 0x63 then repeat for the rest of the
programed space.

-- 
Don Reid