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qca / open-plc-utils

Qualcomm Atheros Open Powerline Toolkit.
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bad mmv #156

Open goRaspy opened 2 years ago

goRaspy commented 2 years ago

Hello,

I am trying to enable SLAC as evse and connected to my car. And I obtain "bad mmv" message during the SLAC . I can't find information about this message.

Any help would be appreciated.

Many thanks

catphish commented 2 years ago

I have the same issue. Looking at the packets, it appears to be the case that the AR7420, in its default configuration, does not generate CM_ATTEN_PROFILE frames. It does generate anther frame in its place (0xA14E) but I have no idea what this frame is, so I am currently not able to implement SLAC correctly on the AR7420.

yuanbo20 commented 1 year ago

I'm having the same problem.

mhei commented 1 year ago

As far as I know, only QCA7000/QCA7005/QCA7006 chipsets/firmware support SLAC at all.

catphish commented 1 year ago

The answer is that SLAC works on the AR7420, but it does NOT implement attenuation measurement (CM_ATTEN_PROFILE). It can therefore be used on the vehicle side, but but on the EVSE side.