FMUv2.4.6 test complete
===

## gpio
- [x] RGB led
- [x] motor1 ~ 6
- [ ] S.BUS

## usart
- [x] uart2

## tasks
- [x] debug shell
- [x] debug link
- [ ] flight contorl
- [ ] mavlink

## sensors
- [x] mpu6000
- [ ] barameter