RefuhrandClaude Opus 5
3ae429ae48
candleLight, CANable, CANnectivity and cantact adapters speak gs_usb. On Linux and macOS the kernel driver exposes them as SocketCAN interfaces, so SavvyCAN already reached them through Qt SerialBus. Windows has no such driver, which left those adapters unusable there. Add a GSUSBConnection that talks to the hardware directly over WinUSB: - one connection per physical device, one SavvyCAN bus per CAN channel - CAN FD including BRS, plus RTR, extended IDs and error frames - known good bit timings for 16/48/80/160/170 MHz device clocks, with a generic solver for clocks the tables do not cover - hardware timestamps, unwrapped across the 32 bit rollover and anchored to the host clock so they line up with the rest of SavvyCAN gs_usb multiplexes every channel over a single USB bulk IN endpoint, so a single reader thread drains it and hands frames to the connection thread in batches, coalescing the wakeups. That keeps one producer on the lock free queue, which the tx echo path already writes to. Device scans skip adapters that a live connection holds. candle_dev_open() shares the file handle and queues read URBs immediately, so probing a device in use would consume frames the open connection is waiting for. connections/candle_api is an unmodified copy of the candle Windows API, LGPL 3.0 rather than MIT and only compiled into Windows builds. See its README for provenance. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01XZnuZJ7zc3e8hk6C8bGDZN
SavvyCAN
Qt based cross platform canbus tool (C) 2015-2024 Collin Kidder
A Qt5 based cross platform tool which can be used to load, save, and capture canbus frames. This tool is designed to help with visualization, reverse engineering, debugging, and capturing of canbus frames.
Please use the "Discussions" tab here on GitHub to ask questions and interact with the community.
Requires a resolution of at least 1024x768. Fully multi-monitor capable. Works on 4K monitors as well.
You are highly recommended to use the CANDue board from EVTV.
The CANDue board must be running the GVRET firmware which can also be found within the collin80 repos.
It is now possible to use any Qt SerialBus driver (socketcan, Vector, PeakCAN, TinyCAN).
It should, however, be noted that use of a capture device is not required to make use of this program. It can load and save in several formats:
- BusMaster log file
- Microchip log file
- CRTD format (OVMS log file format from Mark Webb-Johnson)
- GVRET native format
- Generic CSV file (ID, D0 D1 D2 D3 D4 D5 D6 D7)
- Vector Trace files
- IXXAT Minilog files
- CAN-DO Logs
- Vehicle Spy log files
- CANDump / Kayak (Read only)
- PCAN Viewer (Read Only)
- Wireshark socketcan PCAP file (Read only)
Dependencies
Now this code does not depend on anything other than what is in the source tree or available from the Qt installer.
Uses QCustomPlot available at:
However, this source code is integrated into the source for SavvyCAN and one isn't required to download it separately.
This project requires 5.14.0 or higher because of a dependency on QtSerialBus and other new additions to Qt.
NOTE: There is a work-in-progress branch QT6WIP that can compile with QT6 (Tested with Qt 6.9 on 2026-03-11). Support for QT6 is approximately "beta" quality. Most all functions should work, please send issues if found.
It appears that the current binary build for MacOS requires at least MacOS 10.15
Instructions for compiling:
Download the newest stable version of Qt directly from qt.io (You need 5.14.x or newer (tested with 6.9.0))
cd ~
git clone https://github.com/fasttube/SavvyCAN.git
cd SavvyCAN
~/Qt/6.9.0/gcc_64/bin/qmake
make
Now run SavvyCAN
./SavvyCAN
On linux systems you can run ./install.sh to create a desktop shortcut.
Compiling in debug mode for additional information
qmake CONFIG+=debug
make
What to do if your compile failed?
The very first thing to do is try:
qmake
make clean
make
Did that fix it? Great! If not, ensure that you selected SerialBUS support when you installed Qt.
What to do if qmake fails with error Project ERROR: Unknown module(s) in QT: qml serialbus help on Ubuntu? :
sudo apt install libqt5serialbus5-dev libqt5serialport5-dev qtdeclarative5-dev qttools5-dev
Used Items Requiring Attribution
nodes by Adrien Coquet from the Noun Project
message by Vectorstall from the Noun Project
signal by shashank singh from the Noun Project
signal by juli from the Noun Project
signal by yudi from the Noun Project
Death by Adrien Coquet from the Noun Project