Namespace nebula::drivers

Namespace List > nebula > drivers

Namespaces

Type	Name
namespace	vlp16
namespace	vlp32
namespace	vls128

Classes

Type	Name
class	VelodyneCalibration Calibration information for the entire device.
struct	VelodyneCalibrationConfiguration struct for Velodyne calibration configuration
class	VelodyneDriver Velodyne driver.
class	VelodyneHwInterface Hardware interface of velodyne driver.
struct	VelodyneLaserCorrection
class	VelodyneScanDecoder Base class for Velodyne LiDAR decoder.
struct	VelodyneSensorConfiguration struct for Velodyne sensor configuration
struct	raw_block Raw Velodyne data block.
struct	raw_packet Raw Velodyne packet.

Public Types

Type	Name
enum	RETURN_TYPE Velodyne echo types.
union	two_bytes
typedef struct nebula::drivers::raw_block	raw_block_t Raw Velodyne data block.
typedef struct nebula::drivers::raw_packet	raw_packet_t Raw Velodyne packet.

Public Static Attributes

Type	Name
const int	g_block_data_size = (g\_scans\_per\_block \* g\_raw\_scan\_size)
const int	g_blocks_per_packet = 12
const uint32_t	g_degree_subdivisions = 100
const uint16_t	g_lower_bank = 0xddff
const size_t	g_offset_first_azimuth = 2
const size_t	g_offset_last_azimuth = 1102
const int	g_packet_size = 1206
const int	g_packet_status_size = 4
const int	g_raw_scan_size = 3
const uint16_t	g_return_mode_dual = 57
const size_t	g_return_mode_index = 1204
const uint16_t	g_return_mode_last = 56
const uint16_t	g_return_mode_strongest = 55
const uint16_t	g_rotation_max_units = 36000u
const double	g_rotation_resolution = 0.01
const int	g_scans_per_block = 32
const int	g_scans_per_packet = (g\_scans\_per\_block \* g\_blocks\_per\_packet)
const int	g_size_block = 100
const uint16_t	g_upper_bank = 0xeeff
const float	g_vlp128_distance_resolution = 0.004f
const float	g_vlp16_block_duration = 110.592f
const float	g_vlp16_dsr_toffset = 2.304f
const float	g_vlp16_firing_toffset = 55.296f
const int	g_vlp16_firings_per_block = 2
const int	g_vlp16_scans_per_firing = 16
const float	g_vlp32_channel_duration = 2.304f
const float	g_vlp32_seq_duration = 55.296f
const uint16_t	g_vls128_bank_1 = 0xeeff
const uint16_t	g_vls128_bank_2 = 0xddff
const uint16_t	g_vls128_bank_3 = 0xccff
const uint16_t	g_vls128_bank_4 = 0xbbff
const float	g_vls128_channel_duration = /* multi line expression */
const float	g_vls128_seq_duration = /* multi line expression */

Public Functions

Type	Name
std::ostream &	operator<< (std::ostream & os, VelodyneSensorConfiguration const & arg) Convert VelodyneSensorConfiguration to string (Overloading the << operator)
ReturnMode	return_mode_from_string_velodyne (const std::string & return_mode) Convert return mode name to ReturnMode enum (Velodyne-specific return_mode_from_string)

Public Types Documentation

enum RETURN_TYPE

Velodyne echo types.

enum nebula::drivers::RETURN_TYPE {
    INVALID = 0,
    SINGLE_STRONGEST = 1,
    SINGLE_LAST = 2,
    DUAL_STRONGEST_FIRST = 3,
    DUAL_STRONGEST_LAST = 4,
    DUAL_WEAK_FIRST = 5,
    DUAL_WEAK_LAST = 6,
    DUAL_ONLY = 7
};

---

union two_bytes

used for unpacking the first two data bytes in a block

They are packed into the actual data stream misaligned. I doubt this works on big endian machines.

---

typedef raw_block_t

Raw Velodyne data block.

typedef struct nebula::drivers::raw_block nebula::drivers::raw_block_t;

Each block contains data from either the upper or lower laser bank. The device returns three times as many upper bank blocks.

use stdint.h types, so things work with both 64 and 32-bit machines

---

typedef raw_packet_t

Raw Velodyne packet.

typedef struct nebula::drivers::raw_packet nebula::drivers::raw_packet_t;

revolution is described in the device manual as incrementing (mod 65536) for each physical turn of the device. Our device seems to alternate between two different values every third packet. One value increases, the other decreases.

Todo

figure out if revolution is only present for one of the two types of status fields

status has either a temperature encoding or the microcode level

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Public Static Attributes Documentation

variable g_block_data_size

const int nebula::drivers::g_block_data_size;

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variable g_blocks_per_packet

const int nebula::drivers::g_blocks_per_packet;

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variable g_degree_subdivisions

const uint32_t nebula::drivers::g_degree_subdivisions;

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variable g_lower_bank

const uint16_t nebula::drivers::g_lower_bank;

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variable g_offset_first_azimuth

const size_t nebula::drivers::g_offset_first_azimuth;

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variable g_offset_last_azimuth

const size_t nebula::drivers::g_offset_last_azimuth;

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variable g_packet_size

const int nebula::drivers::g_packet_size;

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variable g_packet_status_size

const int nebula::drivers::g_packet_status_size;

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variable g_raw_scan_size

const int nebula::drivers::g_raw_scan_size;

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variable g_return_mode_dual

const uint16_t nebula::drivers::g_return_mode_dual;

---

variable g_return_mode_index

const size_t nebula::drivers::g_return_mode_index;

---

variable g_return_mode_last

const uint16_t nebula::drivers::g_return_mode_last;

---

variable g_return_mode_strongest

const uint16_t nebula::drivers::g_return_mode_strongest;

Return Modes

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variable g_rotation_max_units

const uint16_t nebula::drivers::g_rotation_max_units;

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variable g_rotation_resolution

const double nebula::drivers::g_rotation_resolution;

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variable g_scans_per_block

const int nebula::drivers::g_scans_per_block;

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variable g_scans_per_packet

const int nebula::drivers::g_scans_per_packet;

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variable g_size_block

const int nebula::drivers::g_size_block;

Raw Velodyne packet constants and structures.

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variable g_upper_bank

const uint16_t nebula::drivers::g_upper_bank;

Todo

make this work for both big and little-endian machines

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variable g_vlp128_distance_resolution

const float nebula::drivers::g_vlp128_distance_resolution;

Special Definitions for VLS128 support

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variable g_vlp16_block_duration

const float nebula::drivers::g_vlp16_block_duration;

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variable g_vlp16_dsr_toffset

const float nebula::drivers::g_vlp16_dsr_toffset;

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variable g_vlp16_firing_toffset

const float nebula::drivers::g_vlp16_firing_toffset;

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variable g_vlp16_firings_per_block

const int nebula::drivers::g_vlp16_firings_per_block;

Special Defines for VLP16 support

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variable g_vlp16_scans_per_firing

const int nebula::drivers::g_vlp16_scans_per_firing;

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variable g_vlp32_channel_duration

const float nebula::drivers::g_vlp32_channel_duration;

Special Defines for VLP32 support

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variable g_vlp32_seq_duration

const float nebula::drivers::g_vlp32_seq_duration;

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variable g_vls128_bank_1

const uint16_t nebula::drivers::g_vls128_bank_1;

Special Definitions for VLS128 support

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variable g_vls128_bank_2

const uint16_t nebula::drivers::g_vls128_bank_2;

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variable g_vls128_bank_3

const uint16_t nebula::drivers::g_vls128_bank_3;

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variable g_vls128_bank_4

const uint16_t nebula::drivers::g_vls128_bank_4;

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variable g_vls128_channel_duration

const float nebula::drivers::g_vls128_channel_duration;

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variable g_vls128_seq_duration

const float nebula::drivers::g_vls128_seq_duration;

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Public Functions Documentation

function operator<<

Convert VelodyneSensorConfiguration to string (Overloading the << operator)

inline std::ostream & nebula::drivers::operator<< (
    std::ostream & os,
    VelodyneSensorConfiguration const & arg
) 

Parameters:

• os
• arg

Returns:

stream

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function return_mode_from_string_velodyne

Convert return mode name to ReturnMode enum (Velodyne-specific return_mode_from_string)

inline ReturnMode nebula::drivers::return_mode_from_string_velodyne (
    const std::string & return_mode
) 

Parameters:

• return_mode Return mode name (Upper and lower case letters must match)

Returns:

Corresponding ReturnMode

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The documentation for this class was generated from the following file src/nebula_velodyne/nebula_velodyne_common/include/nebula_velodyne_common/velodyne_calibration_decoder.hpp