Phenix Devkit Firmware v0.1 Mar 26 12:19:31 2017
First version (git commit 3a4a65)
Support copter self-stabilization flight mode
Support sbus remote control receiver
Compatible with common ground station: Mission Planner/APM Planner/QGround
Phenix Devkit Firmware v0.2 Apr 19 16:34:59 2017
Changes from 0.1
Change serial IP core from uartlite to uart16550, which can change baudrate
Support GPS and alt hold flight mode
Support log record during flight
Fix crash problem, update FreeRTOS version to v9.0.0, old version FreeRTOS can not support saving FPU context in task switch, it cause fatal float error in EKF
Phenix Devkit Firmware v2.0 Oct 13 19:23:59 2017
Change Divket OS Platform,running only Linux on dual CPU core.
APM is running as a linux task.