float64 stamp
string firmware_version
string software_version
string sdk_version
float32 sys_rotation_speed
float32 com_rotation_speed
uint8 error_state
float32 cloud_frequency
float32 cloud_packet_loss_rate
uint32 cloud_size
uint32 cloud_scan_num
float32 imu_frequency
float32 imu_packet_loss_rate
float32[3] imu_rpy
float64 serial_recv_stamp
uint32 serial_buffer_size
uint32 serial_buffer_read