The commander port is used to send control set-points for the roll/pitch/yaw/thrust regulators in the Crazyflie. As soon as the communication link has been established these packets can be sent and the values are valid until the next packet is received.

        +-------+-------+-------+-------+
        | ROLL  | PITCH |  YAW  |THRUST |
        +-------+-------+-------+-------+
Length      4       4       4       2      bytes