Re: [avrdude-dev] Verification errors with TPI and PDI programming

[joa]

> As Joakim Lubeck wrote:
>
>> When I use usbasp (latest firmware) with TPI (tested tiny10, 20, 40)
>> it gives me verification errors, like
>
> ...
>
>> But it works without problems if I use the version RELEASE_5_11_1.
>
> This is kind of strange.

Yes, I also (with my limited knowledge of the inner workings of avrdude)
see some strange things.

If I build in tags/RELEASE_5_11_1/avrdude I get a working version. If I
"svn log" in that directory then this is the last entry
---
r1016 | joerg_wunsch | 2011-09-16 13:27:20 +0200 (Fri, 16 Sep 2011) | 3 lines

5.11.1 has been released.
---

If I checkout r1016 in trunc I get a non working version(?).


So I did some brute-force testing with a lot of different versions.

First working release is r961 where tpi support was added to usbasp.

962 - 975 - also working.
976 - 977 - can't compile, tpi.h missing
With 978 - 980, 990, 995, 996, 997, 998, 999, 1000, 1005, 1007 I get
---
avrdude: AVR device initialized and ready to accept instructions

Reading |                                                    | 0%
0.00savrdude: Error: usbasp programmer does not support TPI
avrdude: error reading signature data for part "ATtiny10", rc=-1
avrdude: error reading signature data, rc=-1
---

and from 1008 and a couple of tested releases after that I get
verification error.

/Joakim