About not getting a response using python openinverter-can-tool

[rrryy39]

Hi, I am currently using foccci&clara for the EVCC development and I want to be able to let the controller send and receive can frames. RIght now I setup the openinverter-can-tool using pip and I am using pcan. After running the commend

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oic can add tx 0x100 AdcProximityPilot 0 16 10

I get this

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canopen.sdo.exceptions.SdoCommunicationError: No SDO response received

Does this mean that I don't have communication to the board? Thank you in advance

[johu]

You need to specify the node id, it defaults to 1 but Clara has 22

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oic -n 22 ....

Are you writing EVSE code for Clara?

[rrryy39]

You need to specify the node id, it defaults to 1 but Clara has 22

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oic -n 22 ....

Are you writing EVSE code for Clara?

No, I want to integrate the clara into a vehicle and let the bms control the clara outputs to EVSE. Thank you

[davefiddes]

Glad you got sorted. If you run

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oic scan

the tool will scan the CAN bus looking for any openinverter nodes (well technically anything that responds to CANopen SDO). I find this a useful way to check that all the devices I expect are up and running on the bus.

[rrryy39]

Glad you got sorted. If you run

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oic scan

the tool will scan the CAN bus looking for any openinverter nodes (well technically anything that responds to CANopen SDO). I find this a useful way to check that all the devices I expect are up and running on the bus.

Thanks, after the scan, I found Found possible openinverter node: 22. But then I do the commend

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oic -n 22 can add tx 0x100 AdcProximityPilot 0 16 10

I got an error

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can.interfaces.pcan.pcan.PcanCanInitializationError: A PCAN Channel has not been initialized yet or the initialization process has failed

. I made sure there is no other app using the pcan and also restart the labtop. Any hint on how to solve this issue? thank you very much.

[davefiddes]

That's an odd looking error message. Has the scan stopped working now?

I don't have any experience of using PCAN adapters (on Windows I presume). Have you got a config file setup like the docs describe: https://python-can.readthedocs.io/en/st ... /pcan.html

If scanning still works can you try a simpler command like "listparams" and/or "dumpall" to check the basic comms are working well.