Seeed Studio USB-CAN Analyzer

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/

Installation

This interface has additional dependencies which can be installed using pip and the optional extra seeedstudio. That will include the dependency pyserial:

pip install python-can[seeedstudio]

Interface

can.interfaces.seeedstudio.SeeedBus

A bus example:

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

Configuration

SeeedBus(channel,
         baudrate=2000000,
         timeout=0.1,
         frame_type='STD',
         operation_mode='normal',
         bitrate=500000,
         can_filters=None)

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

CAN_FILTERS

A list of can filter dictionaries. Defaults to None (i.e. no filtering). Each filter dictionary should have the following keys: - can_id: The CAN ID to filter on. - can_mask: The mask to apply to the ID.

Example: [{"can_id": 0x11, "can_mask": 0x21},]

If one filter is provided, it will be used by the high-performance hardware filter. If zero or more than one filter is provided, software-based filtering will be used.