CAN Con Problem

[steffensow]

Hello!

I have a setup where I want to connect a sensor via CAN. We have the RevPi Connect and the CAN Con interface.
I have set up everything according the the manual and can see the can0 within the ifconfig view.
However, I do not receive any data packages through the interface.

I assume the handbook is up to date stating CAN_H is on Pin 2 and CAN_L on 3 (the picture on the device states it inverted)

The following troubleshooting has been already done:
- Verification of terminal resistors -> Fine total resistor 60 Ohm (2x 120 Ohm in parallel)
- Measuring the CAN_H and CAN_L just with the sensor in the bus. CAN_H is 3 V, CAN_L is 2 V -> seems like a valid sending of data
- Measuring only the CAN Con interface in the bus - here both CAN_H and CAN_L are 2 V which is strange. Any idea on this?

Any thoughts (German or English) are very much appreciated. Thanks!

[steffensow]

Your documentation in https://revolutionpi.de/tutorials/ueber ... chliessen/ is still wrong:
The correct wiring is:

Pin Assignment
1 Resistor 60 Ω
2 CAN_L
3 CAN_H
4 Resistor 60 Ω

Eure Dokumentation https://revolutionpi.de/tutorials/ueber ... chliessen/ ist immer noch falsch:
Die korrekte Verdrahtung ist:

Pin Belegung
1 Resistor 60 Ω
2 CAN_L
3 CAN_H
4 Resistor 60 Ω