sl-perception 9d6c72bd24 feat: Here4 GPS DroneCAN integration via CANable2 (bd-p47c)
Implements saltybot_dronecan_gps ROS2 package — DroneCAN/UAVCAN v0
bridge that publishes Here4 GPS, IMU, magnetometer, and barometer data
to ROS2. CANable2 freed from ESP32 BALANCE comms (bd-wim1) now runs
Here4 at 1 Mbps DroneCAN.

Key features:
- dronecan_parser.py: pure-Python DSDL converters (Fix2, RawIMU, Mag,
  StaticPressure, StaticTemperature, NodeStatus, RTCMStream chunks),
  testable without dronecan library or CAN hardware
- here4_node.py: ROS2 node, auto-discovers Here4 node ID on first Fix2,
  publishes /gps/fix + /gps/velocity for navsat_transform EKF fusion,
  HDOP-based NavSatStatus upgrade (RTK/SBAS), RTCM injection via
  /rtcm (ByteMultiArray) or /rtcm_hex (String hex fallback)
- 39 unit tests, all passing
- bring_up_can:=true parameter to configure SocketCAN at launch

Resolves bd-p47c

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-04-17 21:49:00 -04:00

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XML

<?xml version="1.0"?>
<?xml-model href="http://download.ros.org/schema/package_format3.xsd" schematypens="http://www.w3.org/2001/XMLSchema"?>
<package format="3">
<name>saltybot_dronecan_gps</name>
<version>0.1.0</version>
<description>
DroneCAN/UAVCAN v0 bridge for Here4 GPS on the CANable2 SocketCAN adapter.
Publishes GPS fix, IMU, magnetometer, and barometer data to ROS2.
Injects RTCM corrections for RTK.
bd-p47c: CANable2 freed from ESP32 BALANCE comms by bd-wim1.
Here4 operates at 1 Mbps on can0 (was 500 kbps for VESC comms).
System dependency: dronecan Python library (pip install dronecan)
</description>
<maintainer email="sl-perception@saltylab.local">sl-perception</maintainer>
<license>MIT</license>
<exec_depend>rclpy</exec_depend>
<exec_depend>std_msgs</exec_depend>
<exec_depend>sensor_msgs</exec_depend>
<exec_depend>geometry_msgs</exec_depend>
<!-- dronecan: pip install dronecan (DroneCAN/UAVCAN v0 Python library) -->
<!-- python3-can is a transitive dependency of dronecan -->
<buildtool_depend>ament_python</buildtool_depend>
<test_depend>ament_copyright</test_depend>
<test_depend>ament_flake8</test_depend>
<test_depend>ament_pep257</test_depend>
<test_depend>python3-pytest</test_depend>
<export>
<build_type>ament_python</build_type>
</export>
</package>