#include <visp3/robot/vpQbSoftHand.h>

Inheritance diagram for vpQbSoftHand:

Public Member Functions
	vpQbSoftHand ()

void	getCurrent (vpColVector &current, const int &id=1)

void	getPosition (vpColVector &position, const int &id=1)

void	setPosition (const vpColVector &position, const int &id=1)

void	setPosition (const vpColVector &position, double speed_factor, double stiffness, const int &id=1)

Inherited public functionalities from vpQbDevice
double	getCurrentMax () const

std::vector< short int >	getPositionLimits () const

void	setMaxRepeats (const int &max_repeats)

Inherited protected functionalities from vpQbDevice
int	m_max_repeats

bool	m_init_done

virtual int	activate (const int &id, const bool &command, const int &max_repeats)

virtual int	activate (const int &id, const int &max_repeats)

virtual bool	close (const std::string &serial_port)

virtual int	deactivate (const int &id, const int &max_repeats)

virtual int	getCurrents (const int &id, const int &max_repeats, std::vector< short int > &currents)

virtual int	getInfo (const int &id, const int &max_repeats, std::string &info)

virtual int	getMeasurements (const int &id, const int &max_repeats, std::vector< short int > &currents, std::vector< short int > &positions)

virtual int	getParameters (const int &id, std::vector< int > &limits, std::vector< int > &resolutions)

virtual int	getPositions (const int &id, const int &max_repeats, std::vector< short int > &positions)

virtual int	getSerialPortsAndDevices (const int &max_repeats)

virtual bool	init (const int &id)

virtual int	isActive (const int &id, const int &max_repeats, bool &status)

int	isConnected (const int &id, const int &max_repeats)

virtual bool	isInConnectedSet (const int &id)

virtual bool	isInOpenMap (const std::string &serial_port)

bool	isReliable (int const &failures, int const &max_repeats)

virtual int	open (const std::string &serial_port)

virtual int	setCommandsAndWait (const int &id, const int &max_repeats, std::vector< short int > &commands)

virtual int	setCommandsAsync (const int &id, std::vector< short int > &commands)

Detailed Description

Interface for qbSoftHand device.

See https://qbrobotics.com/ for more details.

Note: Before using this class under Linux (Ubuntu, Debian, Fedora...) it is mandatory to add user to the dialout group. To do so, you must execute:
$ sudo adduser user_name dialout

otherwise you will get an error:
vpQbDevice fails while opening [/dev/ttyUSB0] and sets errno [Permission denied].

vpQbDevice
Definition: vpQbDevice.h:61

The following example shows how to close and open the SoftHand with a given speed factor and stiffness used to stop the command applied to the motors when the measured current is larger than the stiffness multiplied by the maximum allowed current that can be applied to the motors.

#include <visp3/robot/vpQbSoftHand.h>
 
int main()
{
  vpQbSoftHand qbsofthand;
 
  vpColVector q(1);
 
  double speed_factor = 0.5; // half speed
  double stiffness = 0.7;    // 70% of the max allowed current supported by the motors
  std::cout << "** Close the hand with blocking positioning function" << std::endl;
  q[0] = 1;
  qbsofthand.setPosition(q, speed_factor, stiffness);
 
  std::cout << "** Open the hand with blocking positioning function" << std::endl;
  q[0] = 0;
  qbsofthand.setPosition(q, speed_factor, stiffness);
}

Examples: testQbSoftHand.cpp.

Definition at line 87 of file vpQbSoftHand.h.

Constructor & Destructor Documentation

◆ vpQbSoftHand()

vpQbSoftHand::vpQbSoftHand ( )

Default constructor that does nothing. To connect to a device call init().

Definition at line 47 of file vpQbSoftHand.cpp.

Member Function Documentation

◆ activate() [1/2]

int vpQbDevice::activate	(	const int &	id,
		const bool &	command,
		const int &	max_repeats
	)

protectedvirtualinherited

Activate (or deactivate, according to the given command) the motors of the given device. Do nothing if the device is not connected in the Communication Handler.

Parameters

id	The ID of the device to be activated (or deactivated), in range [`1`, `128`].
command	`true` to turn motors on, `false` to turn them off.
max_repeats	The maximum number of consecutive repetitions to mark retrieved data as corrupted.

See also: activate(const int &, const int &), deactivate(), isActive()

Definition at line 496 of file vpQbDevice.cpp.

◆ activate() [2/2]

int vpQbDevice::activate	(	const int &	id,
		const int &	max_repeats
	)

protectedvirtualinherited

Activate the motors of the given device. Do nothing if the device is not connected in the Communication Handler.

Parameters

id	The ID of the device to be activated, in range [`1`, `128`].
max_repeats	The maximum number of consecutive repetitions to mark retrieved data as corrupted.

See also: isActive()

Definition at line 507 of file vpQbDevice.cpp.

◆ close()

bool vpQbDevice::close ( const std::string & serial_port )

protectedvirtualinherited

Close the communication with all the devices connected to the given serial port.

Parameters

serial_port The serial port which has to be closed, e.g. /dev/ttyUSB* (Unix), /dev/tty.usbserial-* (MacOS) or COM* (Windows).

See also: isInOpenMap(), open()

Definition at line 515 of file vpQbDevice.cpp.

◆ deactivate()

int vpQbDevice::deactivate	(	const int &	id,
		const int &	max_repeats
	)

protectedvirtualinherited

Deactivate the motors of the given device. Do nothing if the device is not connected in the Communication Handler.

Parameters

id	The ID of the device to be deactivated, in range [`1`, `128`].
max_repeats	The maximum number of consecutive repetitions to mark retrieved data as corrupted.

See also: activate(const int &, const bool &, const int &), isActive()

Definition at line 523 of file vpQbDevice.cpp.

◆ getCurrent()

void vpQbSoftHand::getCurrent	(	vpColVector &	current,
		const int &	id = `1`
	)

Retrieve the motor currents of the given device.

Parameters

	id	The ID of the device of interest, in range [`1`, `128`].
[out]	current	The one-element device motor current vector, expressed in mA.

Examples: testQbSoftHand.cpp.

Definition at line 54 of file vpQbSoftHand.cpp.

References vpException::fatalError, vpQbDevice::getCurrents(), vpQbDevice::init(), vpQbDevice::isInConnectedSet(), vpQbDevice::isReliable(), vpQbDevice::m_init_done, vpQbDevice::m_max_repeats, and vpColVector::resize().

Referenced by setPosition().

◆ getCurrentMax()

double vpQbDevice::getCurrentMax ( ) const

inherited

Return the maximum current supported by the device.

Examples: testQbSoftHand.cpp.

Definition at line 528 of file vpQbDevice.cpp.

Referenced by setPosition().

◆ getCurrents()

int vpQbDevice::getCurrents	(	const int &	id,
		const int &	max_repeats,
		std::vector< short int > &	currents
	)

protectedvirtualinherited

Retrieve the motor currents of the given device.

Parameters

	id	The ID of the device of interest, in range [`1`, `128`].
	max_repeats	The maximum number of consecutive repetitions to mark retrieved data as corrupted.
[out]	currents	The two-element device motor current vector, expressed in mA: if the device is a qbhand only the first element is filled while the other remains always `0`; in the case of a qbmove both the elements contain relevant data, i.e. the currents respectively of `motor_1` and `motor_2`.

Returns: 0 on success.

See also: getMeasurements(), getPositions()

Definition at line 540 of file vpQbDevice.cpp.

Referenced by getCurrent().

◆ getInfo()

int vpQbDevice::getInfo	(	const int &	id,
		const int &	max_repeats,
		std::string &	info
	)

protectedvirtualinherited

Retrieve the printable configuration setup of the given device.

Parameters

id	The ID of the device of interest, in range [`1`, `128`].
max_repeats	The maximum number of consecutive repetitions to mark retrieved data as corrupted.
info	The configuration setup formatted as a plain text string (empty string on communication error).

Returns: The number of failure reads between 0 and max_repeats.

See also: getParameters()

Definition at line 553 of file vpQbDevice.cpp.

◆ getMeasurements()

int vpQbDevice::getMeasurements	(	const int &	id,
		const int &	max_repeats,
		std::vector< short int > &	currents,
		std::vector< short int > &	positions
	)

protectedvirtualinherited

Retrieve the motor currents of the given device.

Parameters

	id	The ID of the device of interest, in range [`1`, `128`].
[out]	currents	The two-element device motor current vector, expressed in mA: if the device is a qbhand only the first element is filled while the other remains always `0`; in the case of a qbmove both the elements contain relevant data, i.e. the currents respectively of `motor_1` and `motor_2`.
[out]	positions	The device position vector, expressed in ticks: if the device is a qbhand only the first element is filled while the others remain always `0`; in the case of a qbmove all the elements contain relevant data, i.e. the positions respectively of `motor_1`, `motor_2` and `motor_shaft` (which is not directly actuated).
	max_repeats	The maximum number of consecutive repetitions to mark retrieved data as corrupted.

Returns: The number of failure reads between 0 and max_repeats.

See also: getCurrents(), getPositions()

Definition at line 572 of file vpQbDevice.cpp.

◆ getParameters()

int vpQbDevice::getParameters	(	const int &	id,
		std::vector< int > &	limits,
		std::vector< int > &	resolutions
	)

protectedvirtualinherited

Retrieve some of the parameters from the given device.

Parameters

	id	The ID of the device of interest, in range [`1`, `128`].
[out]	limits	The vector of motor position limits expressed in ticks: two values for each motor, respectively [`lower_limit`, `upper_limit`].
[out]	resolutions	The vector of encoder resolutions, each in range [`0`, `8`]: one value for each encoder (note: the qbmove has also the shaft encoder even if it is not actuated). The word "resolution" could be misunderstood: taken the resolution `r`, is the number of turns of the wire inside the device mechanics. It is used essentially to convert the measured position of the motors in ticks to radians or degrees.

Returns: 0 on success.

See also: getInfo(), init()

Definition at line 590 of file vpQbDevice.cpp.

◆ getPosition()

void vpQbSoftHand::getPosition	(	vpColVector &	position,
		const int &	id = `1`
	)

Retrieve the motor position of the given device.

Parameters

	id	The ID of the device of interest, in range [`1`, `128`].
[out]	position	The device one-element position vector, expressed in range [`0`, `1`] with 0 corresponding to an opened hand and 1 a closed hand.

See also: getMeasurements()

Examples: testQbSoftHand.cpp.

Definition at line 81 of file vpQbSoftHand.cpp.

References vpException::fatalError, vpQbDevice::getPositionLimits(), vpQbDevice::getPositions(), vpQbDevice::init(), vpQbDevice::isInConnectedSet(), vpQbDevice::isReliable(), vpQbDevice::m_init_done, vpQbDevice::m_max_repeats, and vpColVector::resize().

Referenced by setPosition().

◆ getPositionLimits()

std::vector< short int > vpQbDevice::getPositionLimits ( ) const

inherited

Returns: Position limits as a 2-dim vector with min and max values.

Definition at line 598 of file vpQbDevice.cpp.

Referenced by getPosition(), and setPosition().

◆ getPositions()

int vpQbDevice::getPositions	(	const int &	id,
		const int &	max_repeats,
		std::vector< short int > &	positions
	)

protectedvirtualinherited

Retrieve the motor positions of the given device.

Parameters

	id	The ID of the device of interest, in range [`1`, `128`].
[out]	positions	The device position vector, expressed in ticks: if the device is a qbhand only the first element is filled while the others remain always `0`; in the case of a qbmove all the elements contain relevant data, i.e. the positions respectively of `motor_1`, `motor_2` and `motor_shaft` (which is not directly actuated).
	max_repeats	The maximum number of consecutive repetitions to mark retrieved data as corrupted.

Returns: The number of failure reads between 0 and max_repeats.

See also: getMeasurements()

Definition at line 611 of file vpQbDevice.cpp.

Referenced by getPosition().

◆ getSerialPortsAndDevices()

int vpQbDevice::getSerialPortsAndDevices ( const int & max_repeats )

protectedvirtualinherited

Scan for all the serial ports of type /dev/ttyUSB* detected in the system, initialize their mutex protector (each serial port connected to the system has to be accessed in a mutually exclusive fashion), and retrieve all the qbrobotics devices connected to them. For each device, store its ID in the private map m_connected_devices, i.e. insert a pair [device_id, serial_port]. The map m_connected_devices is constructed from scratch at each call.

Parameters

max_repeats The maximum number of consecutive repetitions to mark retrieved data as corrupted.

Returns: the number of connected devices.

See also: isInConnectedSet(), open()

Definition at line 626 of file vpQbDevice.cpp.

◆ init()

bool vpQbDevice::init ( const int & id )

protectedvirtualinherited

Initialize the device if the relative physical device is connected through any serial port to the system. If the device is found, retrieve some of its parameter and activate its motors, if requested.

Parameters

id	The ID of the device of interest, in range [`1`, `128`].

Returns: true if the call succeed.

See also: getSerialPortsAndDevices()

Definition at line 638 of file vpQbDevice.cpp.

References vpQbDevice::m_init_done.

Referenced by getCurrent(), getPosition(), and setPosition().

◆ isActive()

int vpQbDevice::isActive	(	const int &	id,
		const int &	max_repeats,
		bool &	status
	)

protectedvirtualinherited

Check whether the motors of the device specified by the given ID are active.

Parameters

id	The ID of the device of interest, in range [`1`, `128`].
max_repeats	The maximum number of consecutive repetitions to mark retrieved data as corrupted.
status	`true` if the device motors are on.

Returns: The number of failure reads between 0 and max_repeats.

Definition at line 655 of file vpQbDevice.cpp.

◆ isConnected()

int vpQbDevice::isConnected	(	const int &	id,
		const int &	max_repeats
	)

protectedinherited

Check whether the the device specified by the given ID is connected through the serial port.

Parameters

id	The ID of the device of interest, in range [`1`, `128`].
max_repeats	The maximum number of consecutive repetitions to mark retrieved data as corrupted.

Returns: The number of failure reads between 0 and max_repeats.

Definition at line 666 of file vpQbDevice.cpp.

◆ isInConnectedSet()

bool vpQbDevice::isInConnectedSet ( const int & id )

protectedvirtualinherited

Check whether the physical device specified by the given ID is connected to the Communication Handler.

Parameters

id	The ID of the device of interest, in range [`1`, `128`].

Returns: true if the given device belongs to the connected device vector, i.e. m_connected_devices.

See also: getSerialPortsAndDevices()

Definition at line 674 of file vpQbDevice.cpp.

Referenced by getCurrent(), getPosition(), and setPosition().

◆ isInOpenMap()

bool vpQbDevice::isInOpenMap ( const std::string & serial_port )

protectedvirtualinherited

Check whether the given serial port is managed by the communication handler, i.e. is open.

Parameters

serial_port The name of the serial port of interest, e.g. /dev/ttyUSB0.

Returns: true if the given serial port belongs to the open file descriptor map, i.e. m_file_descriptors.

See also: open(), close()

Definition at line 682 of file vpQbDevice.cpp.

◆ isReliable()

bool vpQbDevice::isReliable	(	int const &	failures,
		int const &	max_repeats
	)

protectedinherited

Check whether the reading failures are in the given range.

Parameters

failures	The current number of communication failures per serial resource reading.
max_repeats	The maximum number of consecutive repetitions to mark retrieved data as corrupted.

Returns: true if the failures are less than the given threshold.

Definition at line 690 of file vpQbDevice.cpp.

Referenced by getCurrent(), getPosition(), and setPosition().

◆ open()

int vpQbDevice::open ( const std::string & serial_port )

protectedvirtualinherited

Open the serial communication on the given serial port. On success, store the opened file descriptor in the private map m_file_descriptors, i.e. insert a pair [serial_port, file_descriptor].

Parameters

serial_port The serial port which has to be opened, e.g. /dev/ttyUSB0.

Returns: 0 on success.

See also: close(), isInOpenMap()

Definition at line 702 of file vpQbDevice.cpp.

◆ setCommandsAndWait()

int vpQbDevice::setCommandsAndWait	(	const int &	id,
		const int &	max_repeats,
		std::vector< short int > &	commands
	)

protectedvirtualinherited

Send the reference command to the motors of the given device and wait for acknowledge.

Parameters

id	The ID of the device of interest, in range [`1`, `128`].
max_repeats	The maximum number of consecutive repetitions to mark retrieved data as corrupted.
commands	The reference command vector, expressed in ticks: if the device is a qbhand only the first element is meaningful while the other remains always `0`; in the case of a qbmove both the elements contain relevant data, i.e. the commands respectively of `motor_1` and `motor_2`.

Returns: 0 on success.

Definition at line 713 of file vpQbDevice.cpp.

◆ setCommandsAsync()

int vpQbDevice::setCommandsAsync	(	const int &	id,
		std::vector< short int > &	commands
	)

protectedvirtualinherited

Send the reference command to the motors of the given device in a non-blocking fashion.

Parameters

id	The ID of the device of interest, in range [`1`, `128`].
commands	The reference command vector, expressed in ticks: if the device is a qbhand only the first element is meaningful while the other remains always `0`; in the case of a qbmove both the elements contain relevant data, i.e. the commands respectively of `motor_1` and `motor_2`.

Returns: Always 0 (note that this is a non reliable method).

Definition at line 726 of file vpQbDevice.cpp.

Referenced by setPosition().

◆ setMaxRepeats()

void vpQbDevice::setMaxRepeats ( const int & max_repeats )

inherited

Set the maximum number of consecutive repetitions to mark retrieved data as corrupted. This value is set by default to 1.

Definition at line 735 of file vpQbDevice.cpp.

References vpQbDevice::m_max_repeats.

Referenced by vpQbDevice::vpQbDevice().

◆ setPosition() [1/2]

void vpQbSoftHand::setPosition	(	const vpColVector &	position,
		const int &	id = `1`
	)

Send the reference command to the motors of the device with given id in a non-blocking fashion.

Parameters

id	The ID of the device of interest, in range [`1`, `128`].
position	The one-element position vector in range [`0`, `1`] with 0 corresponding to an opened hand and 1 a closed hand.

Examples: testQbSoftHand.cpp.

Definition at line 109 of file vpQbSoftHand.cpp.

References vpException::fatalError, vpQbDevice::getPositionLimits(), vpQbDevice::init(), vpQbDevice::isInConnectedSet(), vpQbDevice::isReliable(), vpQbDevice::m_init_done, vpQbDevice::m_max_repeats, vpQbDevice::setCommandsAsync(), and vpArray2D< Type >::size().

Referenced by setPosition().

◆ setPosition() [2/2]

void vpQbSoftHand::setPosition	(	const vpColVector &	position,
		double	speed_factor,
		double	stiffness,
		const int &	id = `1`
	)

Send the reference command to the motors of the device with given id in a blocking fashion.

Parameters

id	The ID of the device of interest, in range [`1`, `128`].
position	The one-element position vector in range [`0`, `1`] with 0 corresponding to an opened hand and 1 a closed hand.
speed_factor	The speed factor in range [`0.01`, `1`] with 1 corresponding to the fastest mouvement.
stiffness	Stiffness parameter in range [`0`, `1`] is the scale factor applied to the maximum allowed current in order to limit the current into the motors. When set at zero, you can send any position command to the motors, but he will not move. When set to 1, it means that the maximum current returned by getCurrentMax() could be reached during positioning.

Definition at line 154 of file vpQbSoftHand.cpp.

References vpMath::equal(), getCurrent(), vpQbDevice::getCurrentMax(), getPosition(), vpQbDevice::getPositionLimits(), vpTime::measureTimeMs(), setPosition(), and vpTime::wait().

Member Data Documentation

◆ m_init_done

bool vpQbDevice::m_init_done

protectedinherited

Flag used to indicate if the device is initialized.

Definition at line 113 of file vpQbDevice.h.

Referenced by getCurrent(), getPosition(), vpQbDevice::init(), and setPosition().

◆ m_max_repeats

int vpQbDevice::m_max_repeats

protectedinherited

Max number of trials to send a command.

Definition at line 112 of file vpQbDevice.h.

Referenced by getCurrent(), getPosition(), vpQbDevice::setMaxRepeats(), and setPosition().

Public Member Functions

Inherited protected functionalities from vpQbDevice

Detailed Description

Constructor & Destructor Documentation

◆ vpQbSoftHand()

Member Function Documentation

◆ activate() [1/2]

◆ activate() [2/2]

◆ close()

◆ deactivate()

◆ getCurrent()

◆ getCurrentMax()

◆ getCurrents()

◆ getInfo()

◆ getMeasurements()

◆ getParameters()

◆ getPosition()

◆ getPositionLimits()

◆ getPositions()

◆ getSerialPortsAndDevices()

◆ init()

◆ isActive()

◆ isConnected()

◆ isInConnectedSet()

◆ isInOpenMap()

◆ isReliable()

◆ open()

◆ setCommandsAndWait()

◆ setCommandsAsync()

◆ setMaxRepeats()

◆ setPosition() [1/2]

◆ setPosition() [2/2]

Member Data Documentation

◆ m_init_done

◆ m_max_repeats