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Can bus monitoring tool based on arduino and can bus shield. Implements CAN ASCII/SLCAN protocol compatible with Lawicel CAN232/CANUSB. Can be used for monitoring low speed CAN (interior can bus of most cars, less than 500kbps). For higher speeds serial port can become a bottleneck in case data density is high.
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latonita/arduino-canbus-monitor
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CAN BUS monitoring software based on Arduino with Seeduino/ElecFreaks CAN BUS shield based on MCP2515 (Numerous other MCP2515 based CAN BUS modules from ebay and aliexpress work well to).
This software implements CAN ASCII / Serial CAN / SLCAN protocol compatible with Lawicel CAN232/CANUSB.
As for PC counterpart software I personally used and can recommend two tools:
[Windows] CANHacker tool v.2.00.01 (by fuchs) to sniff and visualize data on the bus. You can download CANHacker tool from this forum page:http://www.canhack.net/viewforum.php?f=25&sid=ac01d465f19e088cb160cab630561607 (P.S. Looks like canhack.net no longer operating, here is a copy of installation file:CANHackerV2.00.01.exe)
[Windows] CAN-COOL (by MHS Elektronik), open source, but unfortunaly available only in German. Download link:http://www.mhs-elektronik.de/index.php?module=content&action=show&page=can_cool (Make sure you select RS232 and SL-CAN protocol and then click hardware bus reset icon on a toolbar)
[Linux] SLCAN/SocketCAN can be usedhttps://github.com/linux-can/can-utils. See details in the end of this README file
This monitor uses CAN BUS library forked fromhttps://github.com/Seeed-Studio/CAN_BUS_Shield.
Copyright (C) 2015,2016 Anton Viktorovlatonita@yandex.ru
You can buy me a beer if you like the tool :o)
See protocol definition herehttp://www.can232.com/docs/can232_v3.pdf and herehttp://www.can232.com/docs/canusb_manual.pdf
Commands not supported/not implemented:
- s, W, M, m, U.
Commands modified:
- S - supports not declared 83.3 rate
- F - returns MCP2515 error flags
- Z - extra Z2 option enables 4 byte timestamp vs standard 2 byte (60000ms max)
CMD | IMPLEMENTED | SYNTAX | DESCRIPTION------------------------------------------------------------------------------------------------------------'S' | YES+ | Sn[CR] Setup with standard CAN bit-rates where n is 0-8. | | S0 10Kbit S4 125Kbit S8 1Mbit | | S1 20Kbit S5 250Kbit S9 83.3Kbit | | S2 50Kbit S6 500Kbit | | S3 100Kbit S7 800Kbit's' | - | sxxyy[CR] Setup with BTR0/BTR1 CAN bit-rates where xx and yy is a hex value.'O' | YES | O[CR] Open the CAN channel in normal mode (sending & receiving).'L' | YES | L[CR] Open the CAN channel in listen only mode (receiving).'C' | YES | C[CR] Close the CAN channel.'t' | YES | tiiildd...[CR] Transmit a standard (11bit) CAN frame.'T' | YES | Tiiiiiiiildd...[CR] Transmit an extended (29bit) CAN frame'r' | YES | riiil[CR] Transmit an standard RTR (11bit) CAN frame.'R' | YES | Riiiiiiiil[CR] Transmit an extended RTR (29bit) CAN frame.'P' | YES | P[CR] Poll incomming FIFO for CAN frames (single poll)'A' | YES | A[CR] Polls incomming FIFO for CAN frames (all pending frames)'F' | YES+ | F[CR] Read Status Flags.'X' | YES | Xn[CR] Sets Auto Poll/Send ON/OFF for received frames.'W' | - | Wn[CR] Filter mode setting. By default CAN232 works in dual filter mode (0) and is backwards compatible with previous CAN232 versions.'M' | - | Mxxxxxxxx[CR] Sets Acceptance Code Register (ACn Register of SJA1000). // we use MCP2515, not supported'm' | - | mxxxxxxxx[CR] Sets Acceptance Mask Register (AMn Register of SJA1000). // we use MCP2515, not supported'U' | YES | Un[CR] Setup UART with a new baud rate where n is 0-6.'V' | YES | v[CR] Get Version number of both CAN232 hardware and software'v' | YES | V[CR] Get Version number of both CAN232 hardware and software'N' | YES | N[CR] Get Serial number of the CAN232.'Z' | YES+ | Zn[CR] Sets Time Stamp ON/OFF for received frames only. EXTENSION to LAWICEL: Z2 - millis() timestamp w/o standard 60000ms cycle'Q' | YES todo | Qn[CR] Auto Startup feature (from power on).Installcan-utils first.On Ubuntu and other Debian-based distroscan-utils package is included into standard repositories:
sudo apt install can-utilsFor other distros please follow respective instructions, start from herehttps://github.com/linux-can/can-utils
sudo slcan_attach -f -s4 -o /dev/ttyUSB0sudo slcand -S 115200 /dev/ttyUSB0 can0 sudo ifconfig can0 upwhere 115200 is port speed,/dev/ttyUSB0 - name of your arduino device. can be different
candump can0sudo ifconfig can0 downsudo killall slcandAbout
Can bus monitoring tool based on arduino and can bus shield. Implements CAN ASCII/SLCAN protocol compatible with Lawicel CAN232/CANUSB. Can be used for monitoring low speed CAN (interior can bus of most cars, less than 500kbps). For higher speeds serial port can become a bottleneck in case data density is high.
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