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Firmware Work: Lddh350aa75

A complete firmware work package includes:

  • Test log with oscilloscope screenshots
  • User manual for field update procedure

    • If firmware update fails mid-way:

    Internal manufacturer note: The bootloader itself is write-protected via flash option bytes. lddh350aa75 firmware work

    | Symptom | Possible FW cause | |---------|--------------------| | No PWM output | Clock gate disabled for TIM; dead-time too high | | CAN error frames | Wrong baudrate; missing termination; Bit timing misconfig | | Overcurrent fault on startup | Current sensor offset not calibrated; ADC sampling point wrong | | Watchdog reset during flash | Erase/write too slow; need to feed WDG every 500 ms | A complete firmware work package includes:

    Connect via UART and send the command ?VER or $SYS_STATUS. A typical response: Test log with oscilloscope screenshots User manual for

    LDDH350AA75 FW v1.2.4 (Build date: 2022-03-15)
Checksum: 0xE4A7

    Cross-reference this with manufacturer release notes. If you see v1.0.0 through v1.2.2, those versions contain a known overmodulation bug at 12kHz PWM—mandating an update.