UbloxCellularBase class. More...

#include <UbloxCellularBase.h>

Data Structures
struct	DeviceInfo
	Info about the modem. More...
Public Types
enum	NetworkRegistrationStatusCsd
	Circuit Switched network registration status (CREG Usage). More...
enum	NetworkRegistrationStatusPsd
	Packet Switched network registration status (CGREG Usage). More...
enum	NetworkRegistrationStatusEps
	EPS network registration status (CEREG Usage). More...
enum	ModemPSMState
	modem PSM states. More...
enum	tEDRXAccessTechnology
	edrx access technology More...
enum	RAT
	RAT values for +URAT command R412M only supports value 7 (CatM1), 8 (NB1), and 9 (GPRS) More...
enum	FunctionalityMode
	Module functionality modes. More...
enum	MNOProfile
	Supported MNO profiles for SARA-R4. More...
Public Member Functions
bool	init (const char *pin=0)
	Initialise the modem, ready for use.
bool	nwk_registration ()
	Perform registration with the network.
bool	is_registered_csd ()
	True if the modem is registered for circuit switched data, otherwise false.
bool	is_registered_psd ()
	True if the modem is registered for packet switched data, otherwise false.
bool	is_registered_eps ()
	True if the modem is registered for enhanced packet switched data (i.e.
bool	nwk_deregistration ()
	Perform deregistration from the network.
void	deinit ()
	Put the modem into its lowest power state.
void	set_pin (const char *pin)
	Set the PIN code for the SIM card.
bool	sim_pin_check_enable (bool enableNotDisable)
	Enable or disable SIM pin checking.
bool	change_sim_pin (const char *new_pin)
	Change the SIM pin.
	MBED_DEPRECATED ("This method is now replaced by const char * imei(), please use that instead") bool get_imei(char *imei_to_send
	Get the IMEI.
const char *	imei ()
	Get the IMEI of the module.
const char *	meid ()
	Get the Mobile Equipment ID (which may be the same as the IMEI).
const char *	imsi ()
	Get the IMSI of the SIM.
const char *	iccid ()
	Get the ICCID of the SIM.
int	rssi ()
	Get the RSSI.
bool	set_mno_profile (MNOProfile profile=DEFAULT_MNO_PROFILE)
	Reads the current MNO profile from modem and sets it to user specified profile.
bool	get_mno_profile (int *profile)
	Get current MNO profile.
bool	set_idle_mode (bool enable=false)
	Enable or disable the UPSV Power Saving Mode.
bool	get_idle_mode (int *status)
	Queries the modem for idle mode status.
bool	set_modem_rat (RAT selected_rat, RAT preferred_rat=NOT_USED, RAT second_preferred_rat=NOT_USED)
	Set Radio Access Technology on modem.
bool	get_modem_rat (int selected_rat, int preferred_rat, int *second_preferred_rat)
	Get last saved values for RAT using +URAT read command.
bool	set_functionality_mode (FunctionalityMode mode)
	Sets the modem to specified functionality mode.
bool	get_functionality_mode (int *mode)
	Get the modem functionality mode.
bool	reboot_modem ()
	reboot the modem using AT+CFUN=15.
void	attach_cb_psm_going_in (Callback< void(void )> func, void param)
	Important: Callback function is executed in context of AT parser so a user should not issue any AT commands from inside the callback.
void	attach_cb_psm_coming_out (Callback< void(void )> func, void param)
	Important: Callback function is executed in context of AT parser so a user should not issue any AT commands from inside the callback.
void	detach_cb_psm_going_in ()
	de-register the application callback for modem going in to PSM sleep
void	detach_cb_psm_coming_out ()
	de-register application callback for modem coming out of PSM sleep
bool	set_power_saving_mode (int periodic_tau, int active_time)
	Enable or disable the 3GPP PSM.
bool	get_power_saving_mode (int status, int periodic_tau, int *active_time)
	Reads the 3GPP PSM status (enabled or disabled) and returns assigned periodic tau and active time values.
void	wakeup_modem ()
	Wake up the modem from PSM.
bool	is_modem_awake ()
	True if the modem is not in PSM sleep otherwise false.
int	set_receive_period (int mode, tEDRXAccessTechnology act_type, uint8_t edrx_value)
	Set discontinuous reception time on cellular device.
int	set_receive_period (int mode, tEDRXAccessTechnology act_type)
	Set discontinuous reception time on cellular device.
int	set_receive_period (int mode)
	Set discontinuous reception time on cellular device.
uint32_t	get_receive_period ()
	get discontinuous reception time on cellular device.
Protected Types
enum	DeviceType
	Supported u-blox modem variants. More...
enum	RadioAccessNetworkType
	Network registration status. More...
Protected Member Functions
virtual void	modem_init ()
	Sets the modem up for powering on.
virtual void	modem_deinit ()
	Sets the modem in unplugged state.
virtual void	modem_power_up ()
	Powers up the modem.
virtual void	modem_power_down ()
	Powers down the modem.
void	baseClassInit (PinName tx=MDMTXD, PinName rx=MDMRXD, int baud=MBED_CONF_UBLOX_CELL_BAUD_RATE, bool debug_on=false)
	Initialise this class.
void	at_set_timeout (int timeout)
	Set the AT parser timeout.
int	read_at_to_char (char *buf, int size, char end)
	Read up to size characters from buf or until the character "end" is reached, overwriting the newline with 0 and ensuring a terminator in all cases.
bool	power_up ()
	Powers up the modem.
void	power_down ()
	Power down the modem.
void	lock (void)
	Lock a mutex when accessing the modem.
void	unlock (void)
	Unlock the modem when done accessing it.
bool	set_device_identity (DeviceType *dev)
	Set the device identity in _dev_info based on the ATI string returned by the module.
bool	device_init (DeviceType dev)
	Perform any modem initialisation that is specialised by device type.
bool	initialise_sim_card ()
	Set up the SIM.
void	uint_to_binary_str (uint32_t num, char *str, int str_size, int bit_cnt)
	Converts the given uint to binary string.
uint32_t	binary_str_to_uint (const char *binary_string, int binary_string_length)
	Converts the given binary string to uint.
Protected Attributes
UbloxATCmdParser *	_at
	Point to the instance of the AT parser in use.
int	_at_timeout
	The current AT parser timeout value.
FileHandle *	_fh
	File handle used by the AT parser.
Mutex	_mtx
	The mutex resource.
DeviceInfo	_dev_info
	General info about the modem as a device.
const char *	_pin
	The SIM PIN to use.
bool	_debug_trace_on
	Set to true to spit out debug traces.
int	_baud
	The baud rate to the modem.
bool	_modem_initialised
	True if the modem is ready register to the network, otherwise false.
bool	_sim_pin_check_enabled
	True it the SIM requires a PIN, otherwise false.

Detailed Description

UbloxCellularBase class.

This class provides all the base support for generic u-blox modems on C030 and C027 boards: module identification, power-up, network registration, etc.

Definition at line 34 of file UbloxCellularBase.h.

Member Enumeration Documentation

enum DeviceType [protected]

Supported u-blox modem variants.

Definition at line 484 of file UbloxCellularBase.h.

enum FunctionalityMode

Module functionality modes.

Ref to section 5.3.3 of UBX-13002752 for details.

Definition at line 215 of file UbloxCellularBase.h.

enum MNOProfile

Supported MNO profiles for SARA-R4.

Definition at line 231 of file UbloxCellularBase.h.

enum ModemPSMState

modem PSM states.

Definition at line 81 of file UbloxCellularBase.h.

enum NetworkRegistrationStatusCsd

Circuit Switched network registration status (CREG Usage).

UBX-13001820 - AT Commands Example Application Note (Section 7.10.3).

Definition at line 40 of file UbloxCellularBase.h.

enum NetworkRegistrationStatusEps

EPS network registration status (CEREG Usage).

UBX-13001820 - AT Commands Example Application Note (Section 18.36.3).

Definition at line 68 of file UbloxCellularBase.h.

enum NetworkRegistrationStatusPsd

Packet Switched network registration status (CGREG Usage).

UBX-13001820 - AT Commands Example Application Note (Section 18.27.3).

Definition at line 55 of file UbloxCellularBase.h.

enum RadioAccessNetworkType [protected]

Network registration status.

UBX-13001820 - AT Commands Example Application Note (Section 4.1.4.5).

Definition at line 499 of file UbloxCellularBase.h.

enum RAT

RAT values for +URAT command R412M only supports value 7 (CatM1), 8 (NB1), and 9 (GPRS)

Definition at line 199 of file UbloxCellularBase.h.

enum tEDRXAccessTechnology

edrx access technology

Definition at line 89 of file UbloxCellularBase.h.

Member Function Documentation

void at_set_timeout ( int timeout ) [protected]

Set the AT parser timeout.

Definition at line 567 of file UbloxCellularBase.cpp.

void attach_cb_psm_coming_out	(	Callback< void(void *)>	func,
		void *	param
	)

Important: Callback function is executed in context of AT parser so a user should not issue any AT commands from inside the callback.

It is recommended to set a flag/event/signal in callback and application can use that to wake up the modem and re-initialize it

application callback for modem coming out of PSM sleep

Parameters:

func	callback function to be executed when modem is coming out of PSM sleep.
param	parameter to be passed to callback function.

Definition at line 351 of file UbloxCellularBase.h.

void attach_cb_psm_going_in	(	Callback< void(void *)>	func,
		void *	param
	)

Important: Callback function is executed in context of AT parser so a user should not issue any AT commands from inside the callback.

It is recommended to set a flag/event/signal in callback and application can use that to wake up the modem and re-initialize it

application callback for modem going in to PSM sleep

Parameters:

func	callback function to be executed when modem is going in to PSM sleep
param	parameter to be passed to callback function.

Definition at line 337 of file UbloxCellularBase.h.

void baseClassInit	(	PinName	tx = `MDMTXD`,
		PinName	rx = `MDMRXD`,
		int	baud = `MBED_CONF_UBLOX_CELL_BAUD_RATE`,
		bool	debug_on = `false`
	)		`[protected]`

Initialise this class.

Parameters:

tx	the UART TX data pin to which the modem is attached.
rx	the UART RX data pin to which the modem is attached.
baud	the UART baud rate.
debug_on	true to switch AT interface debug on, otherwise false.

Note: it would be more natural to do this in the constructor however, to avoid the diamond of death, this class is only every inherited virtually. Classes that are inherited virtually do not get passed parameters in their constructor and hence classInit() must be called separately by the first one to wake the beast.

Definition at line 516 of file UbloxCellularBase.cpp.

uint32_t binary_str_to_uint	(	const char *	binary_string,
		int	binary_string_length
	)		`[protected]`

Converts the given binary string to uint.

For example binary_str_to_uint("0000001001", 10) would return 9

Parameters:

binary_string	binary string from where chars are converted to uint
binary_string_length	length of the param binary_string

Returns:: uint represented by the binary string

bool change_sim_pin ( const char * new_pin )

Change the SIM pin.

Parameters:

new_pin the new PIN to use.

Returns:: true if successful, otherwise false.

void deinit ( )

Put the modem into its lowest power state.

void detach_cb_psm_coming_out ( )

de-register application callback for modem coming out of PSM sleep

Definition at line 369 of file UbloxCellularBase.h.

void detach_cb_psm_going_in ( )

de-register the application callback for modem going in to PSM sleep

Definition at line 360 of file UbloxCellularBase.h.

bool device_init ( DeviceType dev ) [protected]

Perform any modem initialisation that is specialised by device type.

Returns:: true if successful, otherwise false.

Definition at line 727 of file UbloxCellularBase.cpp.

bool get_functionality_mode ( int * mode )

Get the modem functionality mode.

Returns:: true if successful, otherwise false.

bool get_idle_mode ( int * status )

Queries the modem for idle mode status.

Parameters:

status pointer to variable that can hold the value for idle mode status 1: enabled 0: disabled

Returns:: true if successful, otherwise false.

bool get_mno_profile ( int * profile )

Get current MNO profile.

Parameters:

profile pointer to variable that can hold the value for returned profile

Returns:: true if operation was successful, false if there was an error

bool get_modem_rat	(	int *	selected_rat,
		int *	preferred_rat,
		int *	second_preferred_rat
	)

Get last saved values for RAT using +URAT read command.

Note: The current selected RAT is indicated by DeviceInfo.rat

Parameters:

selected_rat	pointer to variable that can hold the value for selected_rat
preferred_rat	pointer to variable that can hold the value for preferred_rat
second_preferred_rat	pointer to variable that can hold the value for second_preferred_rat

Note: NOT_USED will be returned in the variables if dual or tri modes are not enabled.

Returns:: true if successful, otherwise false.

bool get_power_saving_mode	(	int *	status,
		int *	periodic_tau,
		int *	active_time
	)

Reads the 3GPP PSM status (enabled or disabled) and returns assigned periodic tau and active time values.

Parameters:

status	0: PSM disabled, 1: PSM enabled
periodic_tau	assigned periodic TAU in seconds.
active_time	assigned active time in seconds

Returns:: True if command successful, otherwise false.

uint32_t get_receive_period ( )

get discontinuous reception time on cellular device.

Remarks:: See 3GPP TS 27.007 eDRX for details.

Returns:: uint32_t

const char* iccid ( )

Get the ICCID of the SIM.

Returns:: a pointer to the ICCID as a null-terminated string.

const char* imei ( )

Get the IMEI of the module.

Returns:: a pointer to the IMEI as a null-terminated string.

const char* imsi ( )

Get the IMSI of the SIM.

Returns:: a pointer to the IMSI as a null-terminated string.

bool init ( const char * pin = 0 )

Initialise the modem, ready for use.

Parameters:

pin	PIN for the SIM card.

Returns:: true if successful, otherwise false.

Table 10.5.163a/3GPP TS 24.008: GPRS Timer 3 information element

Bits 5 to 1 represent the binary coded timer value.

Bits 6 to 8 defines the timer value unit for the GPRS timer as follows: 8 7 6 0 0 0 value is incremented in multiples of 10 minutes 0 0 1 value is incremented in multiples of 1 hour 0 1 0 value is incremented in multiples of 10 hours 0 1 1 value is incremented in multiples of 2 seconds 1 0 0 value is incremented in multiples of 30 seconds 1 0 1 value is incremented in multiples of 1 minute 1 1 0 value is incremented in multiples of 320 hours (NOTE 1) 1 1 1 value indicates that the timer is deactivated (NOTE 2).

Table 10.5.172/3GPP TS 24.008: GPRS Timer information element

Bits 5 to 1 represent the binary coded timer value.

Bits 6 to 8 defines the timer value unit for the GPRS timer as follows:

8 7 6 0 0 0 value is incremented in multiples of 2 seconds 0 0 1 value is incremented in multiples of 1 minute 0 1 0 value is incremented in multiples of decihours 1 1 1 value indicates that the timer is deactivated.

Other values shall be interpreted as multiples of 1 minute in this version of the protocol.

Definition at line 802 of file UbloxCellularBase.cpp.

bool initialise_sim_card ( ) [protected]

Set up the SIM.

Returns:: true if successful, otherwiss false.

Definition at line 747 of file UbloxCellularBase.cpp.

bool is_modem_awake ( )

True if the modem is not in PSM sleep otherwise false.

bool is_registered_csd ( )

True if the modem is registered for circuit switched data, otherwise false.

bool is_registered_eps ( )

True if the modem is registered for enhanced packet switched data (i.e.

LTE and beyond), otherwise false.

bool is_registered_psd ( )

True if the modem is registered for packet switched data, otherwise false.

void lock ( void ) [protected]

Lock a mutex when accessing the modem.

Definition at line 664 of file UbloxCellularBase.h.

MBED_DEPRECATED	(	"This method is now replaced by const char *	imei(),
		please use that instead"
	)

Get the IMEI.

Returns:: true if successful, otherwise false.

const char* meid ( )

Get the Mobile Equipment ID (which may be the same as the IMEI).

Returns:: a pointer to the Mobile Equipment ID as a null-terminated string.

void modem_deinit ( ) [protected, virtual]

Sets the modem in unplugged state.

modem_deinit() will be equivalent to pulling the plug off of the device, i.e., detaching power and serial port. This puts the modem in lowest power state. Uses onboard_modem_api.h where the implementation of onboard_modem_api is provided by the target.

Definition at line 440 of file UbloxCellularBase.cpp.

void modem_init ( ) [protected, virtual]

Sets the modem up for powering on.

modem_init() is equivalent to plugging in the device, e.g., attaching power and serial port. Uses onboard_modem_api.h where the implementation of onboard_modem_api is provided by the target.

Definition at line 435 of file UbloxCellularBase.cpp.

void modem_power_down ( ) [protected, virtual]

Powers down the modem.

modem_power_down() is equivalent to turning off the modem by button press. Uses onboard_modem_api.h where the implementation of onboard_modem_api is provided by the target.

Definition at line 450 of file UbloxCellularBase.cpp.

void modem_power_up ( ) [protected, virtual]

Powers up the modem.

modem_power_up() is equivalent to pressing the soft power button. The driver may repeat this if the modem is not responsive to AT commands. Uses onboard_modem_api.h where the implementation of onboard_modem_api is provided by the target.

Definition at line 445 of file UbloxCellularBase.cpp.

bool nwk_deregistration ( )

Perform deregistration from the network.

Returns:: true if successful, otherwise false.

bool nwk_registration ( )

Perform registration with the network.

Returns:: true if successful, otherwise false.

void power_down ( ) [protected]

Power down the modem.

Definition at line 665 of file UbloxCellularBase.cpp.

bool power_up ( ) [protected]

Powers up the modem.

Returns:: true if successful, otherwise false.

Definition at line 605 of file UbloxCellularBase.cpp.

int read_at_to_char	(	char *	buf,
		int	size,
		char	end
	)		`[protected]`

Read up to size characters from buf or until the character "end" is reached, overwriting the newline with 0 and ensuring a terminator in all cases.

Parameters:

buf	the buffer to write to.
size	the size of the buffer.
end	the character to stop at.

Returns:: the number of characters read, not including the terminator.

Definition at line 577 of file UbloxCellularBase.cpp.

bool reboot_modem ( )

reboot the modem using AT+CFUN=15.

Application should call init() or connect() before making any other API calls.

Returns:: true if successful, otherwise false.

int rssi ( )

Get the RSSI.

Returns:: the RSSI in dBm. If it is not possible to obtain an RSSI reading at the time (e.g. because the modem is in data mode rather than AT command mode) then 0 is returned.

bool set_device_identity ( DeviceType * dev ) [protected]

Set the device identity in _dev_info based on the ATI string returned by the module.

Returns:: true if dev is a known value, otherwise false.

Definition at line 693 of file UbloxCellularBase.cpp.

bool set_functionality_mode ( FunctionalityMode mode )

Sets the modem to specified functionality mode.

Returns:: true if successful, otherwise false.

bool set_idle_mode ( bool enable = false )

Enable or disable the UPSV Power Saving Mode.

Parameters:

idle_mode_value 1: enable idle mode 0: disable idle mode

Returns:: true if successful, otherwise false.

bool set_mno_profile ( MNOProfile profile = DEFAULT_MNO_PROFILE )

Reads the current MNO profile from modem and sets it to user specified profile.

User can also specify profile in mbed_lib.json file and call set_mno_profile without any arguments.

Note: MNO profile should only be set in detached state and a reboot is required for settings to take effect

Parameters:

profile MNO profile to use

Returns:: true if operation was successful, false if there was an error

bool set_modem_rat	(	RAT	selected_rat,
		RAT	preferred_rat = `NOT_USED`,
		RAT	second_preferred_rat = `NOT_USED`
	)

Set Radio Access Technology on modem.

Note: RAT should only be set in detached state and a reboot is required for settings to take effect

Parameters:

selected_rat	Radio Access Technology to use
preferred_rat	Radio Access Technology to use if selected_rat is not available
second_preferred_rat	Radio Access Technology to use if selected_rat and preferred_rat are not available

Returns:: true if successful, otherwise false.

void set_pin ( const char * pin )

Set the PIN code for the SIM card.

Parameters:

pin	PIN for the SIM card.

bool set_power_saving_mode	(	int	periodic_tau,
		int	active_time
	)

Enable or disable the 3GPP PSM.

Note: Application should reboot the module after enabling PSM in order to enter PSM state. (reboot_modem()) Note: Modem can be woken up by toggling the power-on signal. (wakeup_modem()) Note: When device enters PSM, all connections(PPP, sockets) and settings that are not saved in NV memory(ATE0, CREG etc) are lost. host application should be prepared to re-initialize the modem and re-establish the connections. Note: PSM is disabled if both periodic_time and active_time are 0. Note: Not all variants/firmware versions support PSM URCs and in that case function will return false.

PSM string encoding code is borrowed from AT_CellularPower.cpp

Parameters:

periodic_time	requested periodic TAU in seconds.
active_time	requested active time in seconds.
func	callback function to execute when modem goes to sleep
ptr	parameter to callback function

Returns:: True if successful, otherwise false.

int set_receive_period ( int mode )

Set discontinuous reception time on cellular device.

(Disable)

Remarks:: See 3GPP TS 27.007 eDRX for details.

Parameters:

mode	disable or enable the use of eDRX

Returns:: 0 on success 1 on failure

int set_receive_period	(	int	mode,
		tEDRXAccessTechnology	act_type,
		uint8_t	edrx_value
	)

Set discontinuous reception time on cellular device.

SARA-R404M / SARA-R410M-02B / SARA-R410M-52B / SARA-R412M / SARA-N4 : The <Paging_time_window> parameter cannot be set by means of the set command.

Remarks:: See 3GPP TS 27.007 eDRX for details.

Parameters:

mode	disable or enable the use of eDRX
act_type	type of access technology
edrx_value	requested edxr value. Extended DRX parameters information element.

Returns:: 0 on success 1 on failure

int set_receive_period	(	int	mode,
		tEDRXAccessTechnology	act_type
	)

Set discontinuous reception time on cellular device.

Remarks:: See 3GPP TS 27.007 eDRX for details.

Parameters:

mode	disable or enable the use of eDRX
act_type	type of access technology

Returns:: 0 on success 1 on failure

bool sim_pin_check_enable ( bool enableNotDisable )

Enable or disable SIM pin checking.

Parameters:

enableNotDisable true if SIM PIN checking is to be enabled, otherwise false.

Returns:: true if successful, otherwise false.

void uint_to_binary_str	(	uint32_t	num,
		char *	str,
		int	str_size,
		int	bit_cnt
	)		`[protected]`

Converts the given uint to binary string.

Fills the given str starting from [0] with the number of bits defined by bit_cnt For example uint_to_binary_string(9, str, 10) would fill str "0000001001" For example uint_to_binary_string(9, str, 3) would fill str "001"

Parameters:

num	uint to converts to binary string
str	buffer for converted binary string
str_size	size of the str buffer
bit_cnt	defines how many bits are filled to buffer started from lsb

void unlock ( void ) [protected]

Unlock the modem when done accessing it.

Definition at line 672 of file UbloxCellularBase.h.

void wakeup_modem ( )

Wake up the modem from PSM.

Ref to comment on set_power_saving_mode, application should call init() or connect() before making any other API calls.

Field Documentation

UbloxATCmdParser* _at [protected]

Point to the instance of the AT parser in use.

Definition at line 538 of file UbloxCellularBase.h.

int _at_timeout [protected]

The current AT parser timeout value.

Definition at line 545 of file UbloxCellularBase.h.

int _baud [protected]

The baud rate to the modem.

Definition at line 569 of file UbloxCellularBase.h.

bool _debug_trace_on [protected]

Set to true to spit out debug traces.

Definition at line 565 of file UbloxCellularBase.h.

DeviceInfo _dev_info [protected]

General info about the modem as a device.

Definition at line 557 of file UbloxCellularBase.h.

FileHandle* _fh [protected]

File handle used by the AT parser.

Definition at line 549 of file UbloxCellularBase.h.

bool _modem_initialised [protected]

True if the modem is ready register to the network, otherwise false.

Definition at line 574 of file UbloxCellularBase.h.

Mutex _mtx [protected]

The mutex resource.

Definition at line 553 of file UbloxCellularBase.h.

const char* _pin [protected]

The SIM PIN to use.

Definition at line 561 of file UbloxCellularBase.h.

bool _sim_pin_check_enabled [protected]

True it the SIM requires a PIN, otherwise false.

Definition at line 578 of file UbloxCellularBase.h.

Type:	Library
Created:	01 Aug 2019
Imports:	4
Forks:	0
Commits:	27
Dependents:	0
Dependencies:	0
Followers:	2

UbloxCellularBase Class Reference

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Detailed Description

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UbloxCellularBase Class Reference

Data Structures

Public Types

Public Member Functions

Protected Types

Protected Member Functions

Protected Attributes

Detailed Description

Member Enumeration Documentation

Member Function Documentation

Field Documentation

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Repository details

Important Information for this Arm website

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