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50 lines
3.5 KiB
Markdown
50 lines
3.5 KiB
Markdown
# arduino-canbus-monitor
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CAN BUS monitoring software based on Arduino with Seeduino/ElecFreaks CAN BUS shield based on MCP2515.
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Implements CAN ASCII/SLCAN protocol compatible with Lawicel CAN232/CANUSB.
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I might recommend 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
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Copyright (C) 2015 Anton Viktorov <latonita@yandex.ru>
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See protocol definition here http://www.can232.com/docs/can232_v3.pdf and here http://www.can232.com/docs/canusb_manual.pdf
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Commands not supported/not implemented:
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- s, W, M, m, U.
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Commands modified:
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- S - supports not declared 83.3 rate, refer to https://github.com/latonita/CAN_BUS_Shield fork
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- F - returns MCP2515 error flags
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- Z - extra Z2 option enables 4 byte timestamp vs standard 2 byte (60000ms max)
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```
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CMD | IMPLEMENTED | SYNTAX | DESCRIPTION
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------------------------------------------------------------------------------------------------------------
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'S' | YES+ | Sn[CR] Setup with standard CAN bit-rates where n is 0-8.
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| | S0 10Kbit S4 125Kbit S8 1Mbit
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| | S1 20Kbit S5 250Kbit S9 83.3Kbit
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| | S2 50Kbit S6 500Kbit
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| | S3 100Kbit S7 800Kbit
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's' | - | sxxyy[CR] Setup with BTR0/BTR1 CAN bit-rates where xx and yy is a hex value.
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'O' | YES | O[CR] Open the CAN channel in normal mode (sending & receiving).
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'L' | YES | L[CR] Open the CAN channel in listen only mode (receiving).
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'C' | YES | C[CR] Close the CAN channel.
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't' | YES | tiiildd...[CR] Transmit a standard (11bit) CAN frame.
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'T' | YES | Tiiiiiiiildd...[CR] Transmit an extended (29bit) CAN frame
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'r' | YES | riiil[CR] Transmit an standard RTR (11bit) CAN frame.
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'R' | YES | Riiiiiiiil[CR] Transmit an extended RTR (29bit) CAN frame.
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'P' | YES | P[CR] Poll incomming FIFO for CAN frames (single poll)
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'A' | YES | A[CR] Polls incomming FIFO for CAN frames (all pending frames)
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'F' | YES+ | F[CR] Read Status Flags.
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'X' | YES | Xn[CR] Sets Auto Poll/Send ON/OFF for received frames.
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'W' | - | Wn[CR] Filter mode setting. By default CAN232 works in dual filter mode (0) and is backwards compatible with previous CAN232 versions.
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'M' | - | Mxxxxxxxx[CR] Sets Acceptance Code Register (ACn Register of SJA1000). // we use MCP2515, not supported
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'm' | - | mxxxxxxxx[CR] Sets Acceptance Mask Register (AMn Register of SJA1000). // we use MCP2515, not supported
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'U' | YES | Un[CR] Setup UART with a new baud rate where n is 0-6.
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'V' | YES | v[CR] Get Version number of both CAN232 hardware and software
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'v' | YES | V[CR] Get Version number of both CAN232 hardware and software
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'N' | YES | N[CR] Get Serial number of the CAN232.
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'Z' | YES+ | Zn[CR] Sets Time Stamp ON/OFF for received frames only. EXTENSION to LAWICEL: Z2 - millis() timestamp w/o standard 60000ms cycle
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'Q' | YES todo | Qn[CR] Auto Startup feature (from power on).
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```
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