#include <uwahoimodem.h>

Inheritance diagram for UwAhoiModem:

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Collaboration diagram for UwAhoiModem:

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Public Types
enum class	ModemState { AVAILABLE = 0 , TRANSMITTING , CONFIGURING }

enum class	TransmissionState { TX_IDLE = 0 , TX_WAITING }

Public Types inherited from UwModem
enum class	LogLevel { ERROR = 0 , INFO = 1 , DEBUG = 2 }

Public Member Functions
	UwAhoiModem ()

virtual	~UwAhoiModem ()

virtual void	recv (Packet *p)

virtual int	recvSyncClMsg (ClMessage *m)

virtual int	command (int argc, const char const argv)

Public Member Functions inherited from UwModem
	UwModem ()

virtual	~UwModem ()

virtual double	getTxDuration (Packet *p)

virtual int	getModulationType (Packet *P)

void	setModemID (int ID)

int	getModemID ()

void	printOnLog (LogLevel log_level, string module, string message)

LogLevel	getLogLevel ()

int	getDebug ()

std::string	getLogFile ()

void	realTxEnded (Packet *p)

Private Member Functions
virtual void	startTx (Packet *p)

virtual void	startRx (Packet *p)

virtual void	endRx (Packet *p)

virtual void	start ()

virtual void	stop ()

virtual void	transmittingData ()

virtual void	receivingData ()

void	updateStatus (std::shared_ptr< ahoi::packet_t > packet)

ahoi::packet_t	fillAhoiPkt (Packet *p)

void	createRxPacket (Packet *p)

bool	parseFooter (std::shared_ptr< ahoi::footer_t > footer)

bool	storePacketInfo (std::shared_ptr< ahoi::packet_t > header, Packet *p)

void	updateSN ()

Private Attributes
std::unique_ptr< UwConnector >	p_connector

std::unique_ptr< UwInterpreterAhoi >	p_interpreter

ModemState	status

TransmissionState	tx_status

std::mutex	status_m

std::mutex	tx_status_m

std::mutex	tx_queue_m

std::condition_variable	status_cv

std::condition_variable	tx_status_cv

std::condition_variable	tx_queue_cv

std::atomic< bool >	receiving

std::atomic< bool >	transmitting

std::thread	rx_thread

std::thread	tx_thread

std::string	rx_payload

double	virtual_time_ref

std::chrono::milliseconds	WAIT_DELIVERY

ahoi::packet_t	tmpPacket

uint	id

int	parity_bit

int	stop_bit

int	flow_control

int	baud_rate

uint	power

uint	rssi

uint	bit_errors

uint	agc_mean

uint	agc_min

uint	agc_max

Static Private Attributes
static const std::chrono::milliseconds	MODEM_TIMEOUT

static uint	MAX_RETX = 0

static uint8_t	sn = 0

static const double	EPSILON_S

static uint	WAIT_DELIVERY_INT = 3000

Additional Inherited Members
Static Public Member Functions inherited from UwModem
static bool	string2log (const std::string &ll_string, LogLevel &ll)

static bool	log2string (LogLevel ll, std::string &ll_string)

Protected Member Functions inherited from UwModem
virtual void	endTx (Packet *p)

void	checkEvent ()

Protected Attributes inherited from UwModem
int	modemID

std::vector< char >	data_buffer

std::queue< Packet * >	tx_queue

std::queue< Packet * >	rx_queue

unsigned int	DATA_BUFFER_LEN

int	MAX_READ_BYTES

std::string	modem_address

int	debug_

std::ofstream	outLog

std::string	logFile

std::string	log_suffix

LogLevel	loglevel_

bool	log_is_open

CheckTimer *	checkTimer

double	period

std::queue< ModemEvent >	event_q

Detailed Description

The ahoi! modems are an underwater acoustic modems developed by TUUH University, Hamburg by the SmartPORT Group.

The reference website can be found here: https://www.tuhh.de/smartport/research/acoustic-modem.html

Definition at line 56 of file uwahoimodem.h.

Member Enumeration Documentation

◆ ModemState

enum class UwAhoiModem::ModemState

strong

Enum type for the modem general state.

AVAILABLE: immediately available to perform an operation TRANSMITTING: executing a tranmission command: must wait for it ot complete CONFIGURING: executing a configuration command: must wait for it to complete

Enumerator
AVAILABLE
TRANSMITTING
CONFIGURING

Definition at line 65 of file uwahoimodem.h.

◆ TransmissionState

enum class UwAhoiModem::TransmissionState

strong

Enum type for the trasnmission state.

TX_IDLE: the modem is available for transmission of a new packet TX_WAITING: a packet was tranmitted but the command was not acknowledged

Enumerator
TX_IDLE
TX_WAITING

Definition at line 72 of file uwahoimodem.h.

Constructor & Destructor Documentation

◆ UwAhoiModem()

UwAhoiModem::UwAhoiModem ( )

Constructor of the UwAhoiModem class.

Parameters

address	string containing the address to connect to
buflen	lenght in char of the data buffer
read	len length in char of a signle read from the connector

Definition at line 73 of file uwahoimodem.cpp.

◆ ~UwAhoiModem()

UwAhoiModem::~UwAhoiModem ( )

virtual

Destructor of the UwAhoiModem class.

Definition at line 116 of file uwahoimodem.cpp.

Member Function Documentation

◆ command()

int UwAhoiModem::command	(	int	argc,
		const char const	argv
	)

virtual

Tcl command interpreter: Method that maps Tcl commands into C++ methods.

Parameters

argc	number of arguments in argv
argv	array of strings which are the command parameters (Note that argv[0] is the name of the object).

Returns: TCL_OK or TCL_ERROR whether the command has been dispatched successfully or not

Reimplemented from UwModem.

Definition at line 164 of file uwahoimodem.cpp.

◆ createRxPacket()

void UwAhoiModem::createRxPacket ( Packet * p )

private

Method that fills up a packet with the needed header and payload and makes it ready to be sent to the layer above.

Parameters

p	instance of an empty packet to be filled

Definition at line 450 of file uwahoimodem.cpp.

◆ endRx()

void UwAhoiModem::endRx ( Packet * p )

privatevirtual

Method that ends a packet reception.

This method is also in charge of sending the received NS-MIRACLE packet to the upper layers

Parameters

p	Packet pointer to the packet being sent

Implements UwModem.

Definition at line 262 of file uwahoimodem.cpp.

◆ fillAhoiPkt()

ahoi::packet_t UwAhoiModem::fillAhoiPkt ( Packet * p )

private

Method that fills the fields of an ahoi! packet with the needed values, so that later it can be serialized.

param p Packet pointer of the DESERT packet

Definition at line 229 of file uwahoimodem.cpp.

◆ parseFooter()

bool UwAhoiModem::parseFooter ( std::shared_ptr< ahoi::footer_t > footer )

private

Method that extarcts fields from a provided ahoi! packet and save the info values to class field for later access.

Info parameters include values such as received power, RSSI, number of corrupted packets, ecc...

Parameters

packet the packet from which to extract the values

Definition at line 490 of file uwahoimodem.cpp.

◆ receivingData()

void UwAhoiModem::receivingData ( )

privatevirtual

Mehod that detach a thread devoted to receiving data from the connector.

Definition at line 393 of file uwahoimodem.cpp.

◆ recv()

void UwAhoiModem::recv ( Packet * p )

virtual

Method that handles the reception of packets arriving from upper layers of the network simulator.

Parameters

p	pointer to the packet that has been received from the simulator upper layers

Implements UwModem.

Definition at line 122 of file uwahoimodem.cpp.

◆ recvSyncClMsg()

int UwAhoiModem::recvSyncClMsg ( ClMessage * m )

virtual

Cross-Layer messages synchronous interpreter.

Parameters

ClMessage* an instance of ClMessage that represent the message received

Returns: 0 if successful.

Implements UwModem.

Definition at line 170 of file uwahoimodem.cpp.

◆ start()

void UwAhoiModem::start ( )

privatevirtual

Method that starts the driver operations.

It performs all the needed operations to correctly fire up the device's driver.

Implements UwModem.

Definition at line 269 of file uwahoimodem.cpp.

◆ startRx()

void UwAhoiModem::startRx ( Packet * p )

privatevirtual

Method that starts a packet reception.

This method is also in charge of sending a ClMsg, Phy2MacStartRx(p), to notify the upper layers of the simulator about the start of the reception

Parameters

p	Packet pointer to the packet to be received

Implements UwModem.

Definition at line 255 of file uwahoimodem.cpp.

◆ startTx()

void UwAhoiModem::startTx ( Packet * p )

privatevirtual

Method that triggers the transmission of a packet through a specified modem.

Parameters

p	Packet pointer to the packet to be sent

Implements UwModem.

Definition at line 176 of file uwahoimodem.cpp.

◆ stop()

void UwAhoiModem::stop ( )

privatevirtual

Method that stops the driver operations.

It performs all the needed operations to correctly stop the device's driver before closing the simulation.

Implements UwModem.

Definition at line 322 of file uwahoimodem.cpp.

◆ storePacketInfo()

bool UwAhoiModem::storePacketInfo	(	std::shared_ptr< ahoi::packet_t >	header,
		Packet *	p
	)

private

Method that extarcts fields from a provided ahoi! packet and save the info values to class field for later access.

Info parameters include values such as received power, RSSI, number of corrupted packets, ecc...

Parameters

header	ahoi header the packet from which to extract the values
p	ns2 packet in which to save the destination address, ecc...

Definition at line 461 of file uwahoimodem.cpp.

◆ transmittingData()

void UwAhoiModem::transmittingData ( )

privatevirtual

Method that detach a thread devoted to sending packets found in tx_queue.

Definition at line 342 of file uwahoimodem.cpp.

◆ updateSN()

void UwAhoiModem::updateSN ( )

private

Method for Sequence Number (SN) update.

Definition at line 577 of file uwahoimodem.cpp.

◆ updateStatus()

void UwAhoiModem::updateStatus ( std::shared_ptr< ahoi::packet_t > packet )

private

Method that updates the status of the modem State Machine: state change is triggered by recepting the response packet from the ahoi! modem on the connector interface.

Parameters

packet packet received on the connector interface

Definition at line 503 of file uwahoimodem.cpp.

Member Data Documentation

◆ agc_max

uint UwAhoiModem::agc_max

private

Maximum gain set by the AGC (if used) in reception of the last packet.

Definition at line 286 of file uwahoimodem.h.

◆ agc_mean

uint UwAhoiModem::agc_mean

private

Mean gain set by the AGC (if used) in reception of the last packet.

Definition at line 282 of file uwahoimodem.h.

◆ agc_min

uint UwAhoiModem::agc_min

private

Minimum gain set by the AGC (if used) in reception of the last packet.

Definition at line 284 of file uwahoimodem.h.

◆ baud_rate

int UwAhoiModem::baud_rate

private

Integer for port baud rate.

Definition at line 272 of file uwahoimodem.h.

◆ bit_errors

uint UwAhoiModem::bit_errors

private

Number of repaired bit errors during reception in the last packet.

Definition at line 280 of file uwahoimodem.h.

◆ EPSILON_S

const double UwAhoiModem::EPSILON_S

staticprivate

minimum time to wait before to schedule a new event in seconds

Definition at line 248 of file uwahoimodem.h.

◆ flow_control

int UwAhoiModem::flow_control

private

flag for flow control

Definition at line 270 of file uwahoimodem.h.

◆ id

uint UwAhoiModem::id

private

Modem ID, to be set in simulation.

Definition at line 263 of file uwahoimodem.h.

◆ MAX_RETX

uint UwAhoiModem::MAX_RETX = 0

staticprivate

Maximum number of retransmissions for the same packet.

Definition at line 239 of file uwahoimodem.h.

◆ MODEM_TIMEOUT

const std::chrono::milliseconds UwAhoiModem::MODEM_TIMEOUT

staticprivate

Initial value:

=

std::chrono::milliseconds(3600)

Maximum time to wait for modem to become ModemState::AVAILABLE.

Definition at line 237 of file uwahoimodem.h.

◆ p_connector

std::unique_ptr<UwConnector> UwAhoiModem::p_connector

private

Pointer to Connector object that interfaces with the device.

Definition at line 204 of file uwahoimodem.h.

◆ p_interpreter

std::unique_ptr<UwInterpreterAhoi> UwAhoiModem::p_interpreter

private

Pointer to Interpreter object to parse device syntax.

Definition at line 207 of file uwahoimodem.h.

◆ parity_bit

int UwAhoiModem::parity_bit

private

flag for parity bit

Definition at line 266 of file uwahoimodem.h.

◆ power

uint UwAhoiModem::power

private

Received power (RMSE) ratio and "ideal packet".

Above 100 = clipping

Definition at line 276 of file uwahoimodem.h.

◆ receiving

std::atomic<bool> UwAhoiModem::receiving

private

Atomic boolean variable that controls the receiving looping thread.

Definition at line 227 of file uwahoimodem.h.

◆ rssi

uint UwAhoiModem::rssi

private

RSSI vs an "ideal packet".

Above 100 = clipping

Definition at line 278 of file uwahoimodem.h.

◆ rx_payload

std::string UwAhoiModem::rx_payload

private

String that is updated witn each new received messsage.

Definition at line 235 of file uwahoimodem.h.

◆ rx_thread

std::thread UwAhoiModem::rx_thread

private

Object with the rx thread.

Definition at line 231 of file uwahoimodem.h.

◆ sn

uint8_t UwAhoiModem::sn = 0

staticprivate

Sequence number, which follows all the packets transmitted to the modem.

Definition at line 242 of file uwahoimodem.h.

◆ status

ModemState UwAhoiModem::status

private

Variable holding the current status of the modem.

Definition at line 209 of file uwahoimodem.h.

◆ status_cv

std::condition_variable UwAhoiModem::status_cv

private

Condition variable to wait for ModemState::AVAILABLE.

Definition at line 221 of file uwahoimodem.h.

◆ status_m

std::mutex UwAhoiModem::status_m

private

Mutex associated with the state machine of the modem.

Definition at line 215 of file uwahoimodem.h.

◆ stop_bit

int UwAhoiModem::stop_bit

private

flag for stop bit

Definition at line 268 of file uwahoimodem.h.

◆ tmpPacket

ahoi::packet_t UwAhoiModem::tmpPacket

private

Packet to be checked to unlock state machine.

Definition at line 260 of file uwahoimodem.h.

◆ transmitting

std::atomic<bool> UwAhoiModem::transmitting

private

Atomic boolean variable that controls the transmitting looping thread.

Definition at line 229 of file uwahoimodem.h.

◆ tx_queue_cv

std::condition_variable UwAhoiModem::tx_queue_cv

private

Condition variable that is linked with the transmitting queue.

Definition at line 225 of file uwahoimodem.h.

◆ tx_queue_m

std::mutex UwAhoiModem::tx_queue_m

private

Mutex associated with the transmission queue.

Definition at line 219 of file uwahoimodem.h.

◆ tx_status

TransmissionState UwAhoiModem::tx_status

private

Variable holding the current transmission status of the modem.

Definition at line 211 of file uwahoimodem.h.

◆ tx_status_cv

std::condition_variable UwAhoiModem::tx_status_cv

private

Condition variable to wait for TransmissionState::TX_IDLE.

Definition at line 223 of file uwahoimodem.h.

◆ tx_status_m

std::mutex UwAhoiModem::tx_status_m

private

Mutex associated with the state machine of the transmission process.

Definition at line 217 of file uwahoimodem.h.

◆ tx_thread

std::thread UwAhoiModem::tx_thread

private

Object with the tx thread.

Definition at line 233 of file uwahoimodem.h.

◆ virtual_time_ref

double UwAhoiModem::virtual_time_ref

private

virtual time reference

Definition at line 245 of file uwahoimodem.h.

◆ WAIT_DELIVERY

std::chrono::milliseconds UwAhoiModem::WAIT_DELIVERY

private

Time interval to wait for the modem notifying the response of a given packet.

Definition at line 252 of file uwahoimodem.h.

◆ WAIT_DELIVERY_INT

uint UwAhoiModem::WAIT_DELIVERY_INT = 3000

staticprivate

Time interval matching the WAIT_DELIVERY variable: version of type int to match the chrono one, needed because TclObject::bind does not support binding std::chrono variable [milliseconds]

Definition at line 257 of file uwahoimodem.h.

The documentation for this class was generated from the following files:

Public Types

Public Member Functions

Private Member Functions

Private Attributes

Static Private Attributes

Additional Inherited Members

Detailed Description

Member Enumeration Documentation

◆ ModemState

◆ TransmissionState

Constructor & Destructor Documentation

◆ UwAhoiModem()

◆ ~UwAhoiModem()

Member Function Documentation

◆ command()

◆ createRxPacket()

◆ endRx()

◆ fillAhoiPkt()

◆ parseFooter()

◆ receivingData()

◆ recv()

◆ recvSyncClMsg()

◆ start()

◆ startRx()

◆ startTx()

◆ stop()

◆ storePacketInfo()

◆ transmittingData()

◆ updateSN()

◆ updateStatus()

Member Data Documentation

◆ agc_max

◆ agc_mean

◆ agc_min

◆ baud_rate

◆ bit_errors

◆ EPSILON_S

◆ flow_control

◆ id

◆ MAX_RETX

◆ MODEM_TIMEOUT

◆ p_connector

◆ p_interpreter

◆ parity_bit

◆ power

◆ receiving

◆ rssi

◆ rx_payload

◆ rx_thread

◆ sn

◆ status

◆ status_cv

◆ status_m

◆ stop_bit

◆ tmpPacket

◆ transmitting

◆ tx_queue_cv

◆ tx_queue_m

◆ tx_status

◆ tx_status_cv

◆ tx_status_m

◆ tx_thread

◆ virtual_time_ref

◆ WAIT_DELIVERY

◆ WAIT_DELIVERY_INT