Are key bytes in the wrong order for ISO14230-4/KWP2000 Fast?

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dingoguy72
Posts: 2
Joined: Tue Sep 14, 2021 11:59 am

Are key bytes in the wrong order for ISO14230-4/KWP2000 Fast?

Post by dingoguy72 »

Hello,

So the ISO-14230-2 doc I have looks to specify that the key bytes for fast init should be essentially little endian, but I've used a scope on the freematics emulator and it looks like they are being sent in big endian order.

What I'm expecting is to receive 0xEF = KEY_BYTE_1, 0x8F = KEY_BYTE_2, but I'm receiving them in opposite order.

For reference I'm looking at "ISO 14230-2-2016" section 8.3.4.2--Table 9 and section 8.4.4

Am I missing something here? Is the problem on the OBDII emulator or on my understanding of this document?
stanley
Site Admin
Posts: 928
Joined: Sat Mar 01, 2014 3:15 am

Re: Are key bytes in the wrong order for ISO14230-4/KWP2000 Fast?

Post by stanley »

This is a known bug in the earlier firmware. We will soon release a firmware update for users to upgrade.
dingoguy72
Posts: 2
Joined: Tue Sep 14, 2021 11:59 am

Re: Are key bytes in the wrong order for ISO14230-4/KWP2000 Fast?

Post by dingoguy72 »

Okay, thanks for the reply!

One more question: how will I know when new firmware is released?
stanley
Site Admin
Posts: 928
Joined: Sat Mar 01, 2014 3:15 am

Re: Are key bytes in the wrong order for ISO14230-4/KWP2000 Fast?

Post by stanley »

Please keep an eye on our blog.
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