USB-CAN Analyzer

…by Seeed Studio

SKU: 114991193

Links:

• https://www.seeedstudio.com/USB-CAN-Analyzer-p-2888.html
• https://github.com/SeeedDocument/USB-CAN_Analyzer
• https://copperhilltech.com/blog/usbcan-analyzer-usb-to-can-bus-serial-protocol-definition/

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Installation

This interface has additional dependencies which can be installed using pip and the optional extra [seeedstudio]. That will install an additional packages if not already available:

• pyserial

pip3 install python-can[seeedstudio]

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Interface

can.interfaces.seeedstudio.SeeedBus

A bus example:

bus = can.interface.Bus(bustype='seeedstudio', channel='/dev/ttyUSB0', bitrate=500000)

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Parameters

SeeedBus(channel,
         baudrate=2000000,
         timeout=0.1,
         frame_type='STD',
         operation_mode='normal',
         bitrate=500000)

ChANNEL

The serial port created by the USB device when connected.

TIMEOUT

Only used by the underling serial port, it probably should not be changed. The serial port baudrate=2000000 and rtscts=false are also matched to the device so are not added here.

FRAMETYPE

• “STD”
• “EXT”

OPERATIONMODE

• “normal”
• “loopback”
• “silent”
• “loopback_and_silent”

BITRATE

• 1000000
• 800000
• 500000
• 400000
• 250000
• 200000
• 125000
• 100000
• 50000
• 20000
• 10000
• 5000