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a8816d4226
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feat: CAN bus driver for BLDC motor controllers (Issue #597)
- Add can_driver.h / can_driver.c: CAN2 on PB12/PB13 (AF9) at 500 kbps
APB1=54 MHz, PSC=6, BS1=13tq, BS2=4tq, SJW=1tq → 18tq/bit, SP 77.8%
Filter bank 14 (SlaveStartFilterBank=14); 32-bit mask; FIFO0
Accept std IDs 0x200–0x21F (left/right feedback frames)
TX: velocity+torque cmd (0x100+nid, DLC=4) at 100 Hz via main loop
RX: velocity/current/position/temp/fault feedback (0x200+nid, DLC=8)
AutoBusOff=ENABLE for HW recovery; can_driver_process() drains FIFO0
- Add JLINK_TLM_CAN_STATS (0x89, 16 bytes) + JLINK_CMD_CAN_STATS_GET (0x10)
Also add JLINK_TLM_SLOPE (0x88) + jlink_tlm_slope_t missing from Issue #600
- Wire into main.c: init after jlink_init; 100Hz TX loop (differential drive
speed_rpm ± steer_rpm/2); CAN enable follows arm state; 1Hz stats telemetry
- Add CAN_RPM_SCALE=10 and CAN_TLM_HZ=1 to config.h
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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2026-03-14 15:15:41 -04:00 |
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