uint8[2] head
uint8 level_flag
uint8 frame_reserve
uint32[2] sn
uint32[2] version
uint16 bandwidth
MotorCmd[20] motor_cmd
BmsCmd bms_cmd
uint8[40] wireless_remote
uint8[12] led
uint8[2] fan
uint8 gpio
uint32 reserve
uint32 crc

