- nuttx in PX4/Firmware (537fe886015be0ccb6b691a8a2802fb29d17c410): https://github.com/PX4-NuttX/nuttx/commit/63775322bf25adb406594f8e610122fe0cef2f7a
    - nuttx current upstream: https://github.com/PX4-NuttX/nuttx/commit/f57752b6f16f54bd50188024475657c6a7a1604c
    - Changes: https://github.com/PX4-NuttX/nuttx/compare/63775322bf25adb406594f8e610122fe0cef2f7a...f57752b6f16f54bd50188024475657c6a7a1604c

    f57752b 2018-06-25 Daniel Agar - Merged in dagar/nuttx/pr-fixCompileError (pull request #660)