基于STM32F407的四旋翼飞行器的C语言源码和上位机软件，其中加速度计陀螺选择MPU6050，气压计选择MS5611，电子罗盘选择AK8975。-The C source code and the upper computer software of the four-rotor aircraft flight based on STM32F407, which using MPU6050 as accelerometer and gyroscope, using MS5611 as ba