feat: STM32 serial bridge — USB CDC to ROS2 topics #16

Merged
seb merged 1 commits from sl-jetson/stm32-serial-bridge into main 2026-02-28 17:19:25 -05:00

1 Commits

Author SHA1 Message Date
7c4e46aaa1 feat: STM32-to-Jetson ROS2 serial bridge node
saltybot_bridge ROS2 Python package (ament_python):
- serial_bridge_node.py: reads USB CDC JSON telemetry from STM32F722 at 50Hz
  Parses exact firmware format: {"p","r","e","ig","m","s","y"} (all ×10 ints)
  State enum: 0=DISARMED, 1=ARMED, 2=TILT_FAULT (matched to balance_state_t)
- Publishes sensor_msgs/Imu on /saltybot/imu (pitch/roll/yaw as angular_velocity)
- Publishes std_msgs/String on /saltybot/balance_state (full PID JSON diagnostics)
- Publishes diagnostic_msgs/DiagnosticArray on /diagnostics (OK/WARN/ERROR by state)
- Auto-reconnects on serial disconnect; IMU fault frames → ERROR diagnostic
- launch/bridge.launch.py with serial_port + baud_rate launch args
- config/bridge_params.yaml (921600 baud, /dev/ttyACM0)
- test/test_parse.py: 8 unit tests covering normal, fault, edge cases (all pass)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-02-28 17:11:02 -05:00