BQ40Z50 - Change Security Keys 0x0035

Lawrence Herskowitz

Hello,

I am struggling to change security keys. For example if I want to change the security keys for both unseal and full access to (unseal) 1234 5678 and (full access) 9ABC DEFG, I would send the following bytes

44 35 00 34 12 78 56 BC 9A FG DE

But that isn't working. Can someone help me correct it?

Thanks

over 8 years ago

0 ThomasCosby over 8 years ago

TI__Guru 73830 points

Your process and commands are correct, but "G" is not a valid HEX character.

0 Lawrence Herskowitz over 8 years ago in reply to ThomasCosby

Prodigy 40 points

I'm sorry I was just using that as an example. When I do try it I use only valid Hex characters. I didn't think when I posted the example above. So if I change the full access to 9ABC DEFF then the entire sequence is

44 35 00 34 12 78 56 BC 9A FF DE

That should work correct?

0 ThomasCosby over 8 years ago in reply to Lawrence Herskowitz

TI__Guru 73830 points

Yes, I just tested it and it works.

0 Lawrence Herskowitz over 8 years ago in reply to ThomasCosby

Prodigy 40 points

We got it to work, however we needed to add the number of bytes. So to get it to work we needed to send the following bytes

44 0A 35 0 34 12 78 56 BC 9A FF DE

Power management

Power management forum

BQ40Z50 - Change Security Keys 0x0035