Take the structs accel, gyro and mag out of the box_imu struct and place them before the box_imu struct. Now you can add variables of type accel_t, gyro_t and mag_t to the box_imu struct.
Take the structs accel, gyro and mag out of the box_imu struct and place them before the box_imu struct. Now you can add variables of type accel_t, gyro_t and mag_t to the box_imu struct.