Search found 105 matches
- Sat Jan 20, 2024 10:14 pm
- Forum: Charging
- Topic: Develop a QCA7000 board?
- Replies: 594
- Views: 9458784
Re: Develop a QCA7000 board?
The commercial sniffers I am aware of use ether ST or Vertexcom PLC chips, not Qualcomm.
- Fri Dec 01, 2023 3:43 am
- Forum: Charging
- Topic: Drawing power out of CCS port (V2x, inverse charging, bidirectional CCS)
- Replies: 51
- Views: 28502
Re: Drawing power out of CCS port (V2x, inverse charging, bidirectional CCS)
In your charge parameter discovery response I see the following issues:
Your minimum current limit is 20A - check your multiplier, you probably meant 2A.
Your peak current ripple is 40A, probably meant 4A.
Your PMax is 0 in SAScheduleList. Most EVs ignore this though.
Your minimum current limit is 20A - check your multiplier, you probably meant 2A.
Your peak current ripple is 40A, probably meant 4A.
Your PMax is 0 in SAScheduleList. Most EVs ignore this though.
- Sun Sep 24, 2023 3:54 pm
- Forum: Charging
- Topic: Open source CCS using AR7420
- Replies: 422
- Views: 372813
Re: Open source CCS using AR7420
For the Tesla issue- make sure your modem is ready to start SLAC as soon as you switch to 5% duty cycle. Teslas (and a few others) will almost immediately try to start communicating after 5% starts. Stay in 100% duty for a few seconds beforehand if needed to verify the modem is ready before switchin...
- Sat Sep 23, 2023 4:59 am
- Forum: Charging
- Topic: Open source CCS using AR7420
- Replies: 422
- Views: 372813
Re: Open source CCS using AR7420
Hyundai/Kia HV vehicles run at 450V when dealing with “low voltage” chargers (typically 500v max). If charge parameter discovery response EVSE max voltage is below 450v, you’ll very likely fail out. Newer model S and X are ~450v as well, so your likely faulting out for the same reason for both vehic...
- Tue Sep 05, 2023 6:26 am
- Forum: Charging
- Topic: Drawing power out of CCS port (V2x, inverse charging, bidirectional CCS)
- Replies: 51
- Views: 28502
Re: Drawing power out of CCS port (V2x, inverse charging, bidirectional CCS)
No real way to keep those switches closed. Could try 1 or 2 amps of current value in your currentdemandres EVSE actual current. Not actual current flow, just the reported value. There’s a chance the vehicle timer only fires due to your value staying at 0A for so long, and non zero might defeat it. W...
- Fri Aug 25, 2023 4:39 am
- Forum: Charging
- Topic: Open source CCS using AR7420
- Replies: 422
- Views: 372813
Re: Open source CCS using AR7420
I thought the QCA7420 couldn’t measure the sounding messages from the PEV? If that’s true, you are probably failing to send CM_ATTEN_CHAR.IND or sending nonsense values. You can certainly fake the measurements and send a value that the PEV side will accept.
- Fri Aug 25, 2023 4:24 am
- Forum: Charging
- Topic: Open source CCS using AR7420
- Replies: 422
- Views: 372813
Re: Open source CCS using AR7420
The iotecha tool is a professional device and costs professional device money. Low five figures. It is only a passive sniffer, but a mostly good one. A true bargain compared to the Keysight stuff (which can do a lot more, but also costs an order of magnitude more).
- Thu Aug 10, 2023 4:31 am
- Forum: Charging
- Topic: Open source CCS using AR7420
- Replies: 422
- Views: 372813
Re: PP differences for CCS1 vs CCS2
def resetTheConnection(self): # in case of a broken connection, here we try to start it again FYI if the tcp connection is broken (closed or reset) at any point during a session, the session will end. You can try to reconnect, but should start at the beginning. Stations that support also CHAdeMO ar...
- Mon Jul 31, 2023 1:52 am
- Forum: Charging
- Topic: Aliexpress QCA7005 modules
- Replies: 15
- Views: 22622
Re: Aliexpress QCA7005 modules
The firmware is stored in a separate SPI flash chip. Assuming whatever you did only damaged the QCA7000 and not the flash too, replacement of the chip is all that is necessary.
- Thu Jul 13, 2023 12:33 pm
- Forum: Charging
- Topic: Open source CCS using AR7420
- Replies: 422
- Views: 372813
Re: Open source CCS using AR7420
There are vehicles in the market today that 100% rely on the station’s EVSE preset voltage value and essentially do no estimate of the actual charger voltage during precharge. There’s also vehicles that do measure the inlet voltage and ignore whatever the EVSE says… And also there are some vehicles ...
- Mon Jul 03, 2023 4:27 pm
- Forum: Charging
- Topic: Open source CCS using AR7420
- Replies: 422
- Views: 372813
Re: Open source CCS using AR7420
You might be choking on the response code. ABB appears to send “ok” but they should send “OK_NewSessionEstablished”.
Work around it.
Work around it.
- Sat Jul 01, 2023 6:07 pm
- Forum: Charging
- Topic: Open source CCS using AR7420
- Replies: 422
- Views: 372813
Re: Open source CCS using AR7420
The difference between the good case with the Chademo-Test and the todays it, that the charger feels not well and seems to need more time. In the ChargeParameterDiscoveryRes, the good case is "ResponseCode": "OK", "EVSEProcessing": "Finished", "EVSEStatu...
- Sat Jul 01, 2023 6:01 pm
- Forum: Charging
- Topic: Open source CCS using AR7420
- Replies: 422
- Views: 372813
Re: Open source CCS using AR7420
Make sure you are in state C before you send your first cable check request.
- Mon Jun 12, 2023 4:30 am
- Forum: Charging
- Topic: Open source CCS using AR7420
- Replies: 422
- Views: 372813
Re: Open source CCS using AR7420
Curious to know if you guys think this python implementation would work on something even lower end than a raspberry pi zero? How much ram does it take up when running?
- Mon May 15, 2023 5:07 am
- Forum: Charging
- Topic: Open source CCS using AR7420
- Replies: 422
- Views: 372813
Re: Open source CCS using AR7420
In your Delta pcap, the second attempt looks like the station responded with failed negotiation… why, I have no idea, but your logs show accepted and moving onto the next step. You should exit out here instead of continuing. First attempt my only guess is part of the charger state machine got messed...
- Sat Mar 25, 2023 6:38 pm
- Forum: Charging
- Topic: Chademo Controller Development
- Replies: 511
- Views: 116516
Re: Chademo Controller Development
Not sure if obvious but in CHAdeMO spec, if the vehicle doesn’t ask for non-zero current within 6 seconds of charge start, the charger will stop (and at least some will show EVSE malfunction flag). Maxchargevoltage is a sort of “never exceed during charging” parameter and is usually set higher than ...
- Sat Mar 25, 2023 6:07 pm
- Forum: Charging
- Topic: Open source CCS using AR7420
- Replies: 422
- Views: 372813
Re: Open source CCS using AR7420
Most chargers will sit in contract authentication until you’ve authorized, yes. So you can do all your SLAC and setup verification without paying. Any charger on a network that advertises plug and charge capability by definition must set up communication before authentication as the vehicle itself i...
- Thu Mar 23, 2023 10:36 pm
- Forum: Charging
- Topic: Open source CCS using AR7420
- Replies: 422
- Views: 372813
Re: Open source CCS using AR7420
You could run tcpdump on the interface, you don’t necessarily need a sniffer on the line.
You’ll need to set EVReady to true or 1 for cable check, pre charge, power delivery, and current demand.
You’ll need to set EVReady to true or 1 for cable check, pre charge, power delivery, and current demand.
- Thu Mar 23, 2023 8:41 pm
- Forum: Charging
- Topic: Open source CCS using AR7420
- Replies: 422
- Views: 372813
Re: Open source CCS using AR7420
Ok I misspoke, you might be missing EVReady entirely? Most vehicles send true but apparently some send false here. It must be set to true in cable check and beyond until end of charging. Since it’s not in the charger logs, and everything else seems to be decoded, it’s suspicious. Really hard to work...
- Thu Mar 23, 2023 8:23 pm
- Forum: Charging
- Topic: Open source CCS using AR7420
- Replies: 422
- Views: 372813
Re: Open source CCS using AR7420
You’re missing EVReady: True in DC_EVStatus.
- Thu Mar 23, 2023 1:28 am
- Forum: Charging
- Topic: Open source CCS using AR7420
- Replies: 422
- Views: 372813
Re: Open source CCS using AR7420
EVCCID should be equivalent to MAC minus the normal colons between digits. If your EVCCID is blank, I could see that messing up some chargers. The charger is expecting something there. If you could get pcaps of sessions I could be more helpful. :) If you want to quickly check, throw 010000000002 in ...
- Wed Mar 22, 2023 4:35 am
- Forum: Charging
- Topic: Open source CCS using AR7420
- Replies: 422
- Views: 372813
Re: Open source CCS using AR7420
You guys are going from state C back to state B after power delivery request (the second one), prior to sending welding detection, right? If you are still in state C when sending welding, that could certainly throw a wrench into the charger’s state machine, although not technically a sequence error.
- Fri Mar 10, 2023 6:04 pm
- Forum: Charging
- Topic: Open source CCS using AR7420
- Replies: 422
- Views: 372813
Re: Open source CCS using AR7420
I tried looking at the alpitronics pcap where you get a failed response to a welding detection request. I am not sure what you’re doing wrong here. I have seen identical requests from real ccs vehicles. You might try setting EV ready to false and see if it doesn’t fail out. Seems like Alpitronics mi...
- Tue Jan 03, 2023 7:29 am
- Forum: Charging
- Topic: BMW i3 CCS/charge port controller
- Replies: 1205
- Views: 6628022
Re: BMW i3 CCS/charge port controller
A lot of stations will send back to the EV parameters no higher than what the vehicle reports. So in this case 125A being sent by the LIM is returned by the station as it’s upper limit.
This is done mostly for compatibility with early CCS EVs.
This is done mostly for compatibility with early CCS EVs.
- Sun Dec 18, 2022 7:20 pm
- Forum: Charging
- Topic: BMW i3 CCS/charge port controller
- Replies: 1205
- Views: 6628022
Re: BMW i3 CCS/charge port controller
DIN 70121 was limited to 500V and at some point they moved to ISO 15118 which supports 1000V. There's vehicles out there that can do ~920V but still speak DIN. DIN 70121 may have been written when all cars were below 500V, but that doesn't mean vehicles don't use it. The upper bounds for a lot of v...