Add EdgeTech Smart EVSE

[premultiply]

Replaces #13852

[andig]

@premultiply was fehlt noch?

[andig]

@swallage ok?

[swallage]

All check passed, great! Should I check out the unstable branch to verify?

[andig]

@swallage please check out this PR for testing! If not possible we could merge as-is and you can test in nightly.

[swallage]

I just started to test it. It seems however that the features
cphwonlock: true/false
cpwakeauto: true/false
are not supported in this version.

[swallage]

@andig : at the moment the board only supports a hardware lock (that locks the plug) or a CP-disconnects requires additional hardware. So when the features cphwonlock and cpwakeauto are not available that is fine. The line 243-246 is a different issue. Let me check

[swallage]

Your suggestion seems better as it avoids specifying the value at different places. As I am not a Go-expert, this double check:
settings |= 1 // set bit 0 (smartEVSEConfPhases)
is the same as
settings |= 0x1
?

[premultiply]

Yes, it is the same.

[premultiply]

I just started to test it. It seems however that the features
cphwonlock: true/false
cpwakeauto: true/false
are not supported in this version.

If the hardware supports wake-up it always should handle it by itself.
Looks to me that this may only require a firmware update?

So there is no need to do any special handling by evcc or special config vars to be set by the user.

Hint: Maybe you can alter the firmware to skip the crude and not recommended relais solution on CP line at all and provide just the -12V on CP by EVSE for wake-up assist function as defined by EV40.

“E.V. READY” CERTIFICATION TECHNICAL REFERENCE DOCUMENT
Version 2.0

EV40:
After a starting sequence, if the car does not close its S2 switch within 30 s after the B2 state, the station will simulate a disconnection of cable on
station side during 4 to 10 s and will restart the charging sequence with a B1 state. The station shall wait longer than 0,5 s and lower than 1 s before
entering X2 state (X2 means B2 or C2).
In case the car turns to C1 state during B1 state, the station should supply energy within 2 s max after beginning of C2 state.
Purpose of this sequence is to wake up a possible car asleep. This will be applied only once.

[swallage]

Cool @premultiply , thanks a lot. We were not that happy with the CP-disconnect using a relay.

[swallage]

I just started to test it. It seems however that the features cphwonlock: true/false cpwakeauto: true/false are not supported in this version.

@premultiply : see the issue #13946 (comment) above. Not sure what happened with the cphwonlock feature (requires additional hardware, but feature was in original PR).

[swallage]

Perhaps @andig removed the HW-lock feature. For me that is fine for now. We have to look at CP disconnect again after the suggestion of @premultiply . Is the PR good enough to merge into the main tree?

[premultiply]

Not sure what happened with the cphwonlock feature (requires additional hardware, but feature was in original PR).

I removed it as if it exists it should be handled by EVSE itself without any configuration needs on evcc side.
Seems to have an "automatic" mode from what I understand about it.

[swallage]

So cool, does that mean the charger will be merged?

[swallage]

😃