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#1 2023-08-16 18:05:32

quterydyf
Contributor
Registered: 2023-02-15
Posts: 23

Chipset detection - T55xx

It occurred to me that while I have plenty of T5577-based cards, only few of them show up as such during `lf search`.
Looking at the source code for this part, I see that `P1Detect()` is called to test for T55xx. Indeed, `lf t55xx p1detect` is much less reliable than `lf t55xx detect`.
Is it just for me? What was the ground for decision to use `p1detect` instead of `detect`? Should it be amended?

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#2 2023-08-21 18:50:35

fazer
Contributor
Registered: 2019-03-02
Posts: 156

Re: Chipset detection - T55xx

Hello, in the pm3 doc there is a guide for this kind of badge.
I hope you will get an answer.
Good evening.

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#3 2023-10-24 18:05:04

quterydyf
Contributor
Registered: 2023-02-15
Posts: 23

Re: Chipset detection - T55xx

Update: figured out why p1detect is unreliable. It wants manufacturer ID in traceability info to be "ATMEL France", while most of my cards are Chinese clones and have "Silicon Craft Technology Thailand".

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#4 2023-10-29 21:10:06

iceman
Administrator
Registered: 2013-04-25
Posts: 9,538
Website

Re: Chipset detection - T55xx

wasn't there a fix for that already merged?

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#5 2023-11-01 18:55:39

quterydyf
Contributor
Registered: 2023-02-15
Posts: 23

Re: Chipset detection - T55xx

Indeed it was, but I lag behind the master branch. Thanks both for fixing and for notice.

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#6 2023-11-02 02:01:36

iceman
Administrator
Registered: 2013-04-25
Posts: 9,538
Website

Re: Chipset detection - T55xx

Being on latest source is helpful some times

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#7 2023-11-03 18:47:35

quterydyf
Contributor
Registered: 2023-02-15
Posts: 23

Re: Chipset detection - T55xx

I know. I'm just lazy. Sorry.

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