ESP8266Interface class Implementation of the NetworkStack for the ESP8266. More...

#include <ESP8266Interface.h>

Inherits NetworkStack, and WiFiInterface.

Public Types
typedef mbed::Callback< void(nsapi_error_t result, SocketAddress *address)	hostbyname_cb_t )
	Hostname translation callback (asynchronous)
typedef mbed::Callback< void(nsapi_error_t result, SocketAddress *address)	hostbyname_cb_t )
	Hostname translation callback (for use with gethostbyname_async()).
Public Member Functions
	ESP8266Interface ()
	ESP8266Interface default constructor Will use values defined in mbed_lib.json.
	ESP8266Interface (PinName tx, PinName rx, bool debug=false)
	ESP8266Interface lifetime.
virtual int	connect ()
	Start the interface.
virtual int	connect (const char ssid, const char pass, nsapi_security_t security=NSAPI_SECURITY_NONE, uint8_t channel=0)
	Start the interface.
virtual int	set_credentials (const char ssid, const char pass, nsapi_security_t security=NSAPI_SECURITY_NONE)
	Set the WiFi network credentials.
virtual int	set_channel (uint8_t channel)
	Set the WiFi network channel - NOT SUPPORTED.
virtual int	disconnect ()
	Stop the interface.
virtual const char *	get_ip_address ()
	Get the internally stored IP address.
virtual const char *	get_mac_address ()
	Get the internally stored MAC address.
virtual const char *	get_gateway ()
	Get the local gateway.
virtual const char *	get_netmask ()
	Get the local network mask.
virtual int8_t	get_rssi ()
	Gets the current radio signal strength for active connection.
virtual int	scan (WiFiAccessPoint *res, unsigned count)
	Scan for available networks.
virtual nsapi_error_t	setsockopt (nsapi_socket_t handle, int level, int optname, const void *optval, unsigned optlen)
virtual nsapi_error_t	getsockopt (nsapi_socket_t handle, int level, int optname, void optval, unsigned optlen)
virtual void	attach (mbed::Callback< void(nsapi_event_t, intptr_t)> status_cb)
	Register callback for status reporting.
virtual nsapi_connection_status_t	get_connection_status () const
	Get the connection status.
virtual nsapi_error_t	gethostbyname (const char host, SocketAddress address, nsapi_version_t version=NSAPI_UNSPEC)
	Translates a hostname to an IP address with specific version.
virtual nsapi_value_or_error_t	gethostbyname_async (const char *host, hostbyname_cb_t callback, nsapi_version_t version=NSAPI_UNSPEC)
	Translates a hostname to an IP address (asynchronous)
virtual nsapi_error_t	gethostbyname_async_cancel (int id)
	Cancels asynchronous hostname translation.
virtual nsapi_error_t	add_dns_server (const SocketAddress &address)
	Add a domain name server to list of servers to query.
virtual nsapi_error_t	get_dns_server (int index, SocketAddress *address)
	Get a domain name server from a list of servers to query.
virtual OnboardNetworkStack *	onboardNetworkStack ()
	Dynamic downcast to a OnboardNetworkStack.
virtual nsapi_size_or_error_t	scan (WiFiAccessPoint *res, nsapi_size_t count)=0
	Scan for available networks.
virtual WiFiInterface *	wifiInterface ()
virtual nsapi_error_t	set_network (const char ip_address, const char netmask, const char *gateway)
	Configure this network interface to use a static IP address.
virtual nsapi_error_t	set_dhcp (bool dhcp)
	Enable or disable DHCP on connecting the network.
virtual nsapi_error_t	gethostbyname (const char host, SocketAddress address, nsapi_version_t version=NSAPI_UNSPEC)
	Translate a hostname to an IP address with specific version.
virtual nsapi_value_or_error_t	gethostbyname_async (const char *host, hostbyname_cb_t callback, nsapi_version_t version=NSAPI_UNSPEC)
	Translate a hostname to an IP address (asynchronous).
virtual nsapi_error_t	gethostbyname_async_cancel (int id)
	Cancel asynchronous hostname translation.
virtual nsapi_error_t	add_dns_server (const SocketAddress &address)
	Add a domain name server to list of servers to query.
virtual nsapi_error_t	set_blocking (bool blocking)
	Set blocking status of connect() which by default should be blocking.
virtual EthInterface *	ethInterface ()
	Return pointer to an EthInterface.
virtual MeshInterface *	meshInterface ()
	Return pointer to a MeshInterface.
virtual CellularBase *	cellularBase ()
	Return pointer to a CellularBase.
virtual EMACInterface *	emacInterface ()
	Return pointer to an EMACInterface.
Static Public Member Functions
static WiFiInterface *	get_default_instance ()
	Get the default Wi-Fi interface.
Protected Member Functions
virtual int	socket_open (void **handle, nsapi_protocol_t proto)
	Open a socket.
virtual int	socket_close (void *handle)
	Close the socket.
virtual int	socket_bind (void *handle, const SocketAddress &address)
	Bind a server socket to a specific port.
virtual int	socket_listen (void *handle, int backlog)
	Start listening for incoming connections.
virtual int	socket_connect (void *handle, const SocketAddress &address)
	Connects this TCP socket to the server.
virtual int	socket_accept (void handle, void socket, SocketAddress address)
	Accept a new connection.
virtual int	socket_send (void handle, const void data, unsigned size)
	Send data to the remote host.
virtual int	socket_recv (void handle, void data, unsigned size)
	Receive data from the remote host.
virtual int	socket_sendto (void handle, const SocketAddress &address, const void data, unsigned size)
	Send a packet to a remote endpoint.
virtual int	socket_recvfrom (void handle, SocketAddress address, void *buffer, unsigned size)
	Receive a packet from a remote endpoint.
virtual void	socket_attach (void handle, void(callback)(void ), void data)
	Register a callback on state change of the socket.
virtual NetworkStack *	get_stack ()
	Provide access to the NetworkStack object.
virtual nsapi_error_t	socket_open (nsapi_socket_t *handle, nsapi_protocol_t proto)=0
	Opens a socket.
virtual nsapi_error_t	socket_close (nsapi_socket_t handle)=0
	Close the socket.
virtual nsapi_error_t	socket_bind (nsapi_socket_t handle, const SocketAddress &address)=0
	Bind a specific address to a socket.
virtual nsapi_error_t	socket_listen (nsapi_socket_t handle, int backlog)=0
	Listen for connections on a TCP socket.
virtual nsapi_error_t	socket_connect (nsapi_socket_t handle, const SocketAddress &address)=0
	Connects TCP socket to a remote host.
virtual nsapi_error_t	socket_accept (nsapi_socket_t server, nsapi_socket_t handle, SocketAddress address=0)=0
	Accepts a connection on a TCP socket.
virtual nsapi_size_or_error_t	socket_send (nsapi_socket_t handle, const void *data, nsapi_size_t size)=0
	Send data over a TCP socket.
virtual nsapi_size_or_error_t	socket_recv (nsapi_socket_t handle, void *data, nsapi_size_t size)=0
	Receive data over a TCP socket.
virtual nsapi_size_or_error_t	socket_sendto (nsapi_socket_t handle, const SocketAddress &address, const void *data, nsapi_size_t size)=0
	Send a packet over a UDP socket.
virtual nsapi_size_or_error_t	socket_recvfrom (nsapi_socket_t handle, SocketAddress address, void buffer, nsapi_size_t size)=0
	Receive a packet over a UDP socket.
virtual void	socket_attach (nsapi_socket_t handle, void(callback)(void ), void *data)=0
	Register a callback on state change of the socket.
Static Protected Member Functions
static WiFiInterface *	get_target_default_instance ()
	Get the target's default Wi-Fi interface.
Friends
class	InternetSocket
class	UDPSocket
class	TCPSocket
class	InternetSocket
class	UDPSocket
class	TCPSocket

Detailed Description

ESP8266Interface class Implementation of the NetworkStack for the ESP8266.

Definition at line 29 of file ESP8266Interface.h.

Member Typedef Documentation

typedef mbed::Callback<void (nsapi_error_t result, SocketAddress *address) hostbyname_cb_t) [inherited]

Hostname translation callback (asynchronous)

Callback will be called after DNS resolution completes or a failure occurs.

Callback should not take more than 10ms to execute, otherwise it might prevent underlying thread processing. A portable user of the callback should not make calls to network operations due to stack size limitations. The callback should not perform expensive operations such as socket recv/send calls or blocking operations.

Parameters:

status	NSAPI_ERROR_OK on success, negative error code on failure
address	On success, destination for the host SocketAddress

Definition at line 78 of file NetworkStack.h.

typedef mbed::Callback<void (nsapi_error_t result, SocketAddress *address) hostbyname_cb_t) [inherited]

Hostname translation callback (for use with gethostbyname_async()).

Callback will be called after DNS resolution completes or a failure occurs.

Note:: Callback should not take more than 10ms to execute, otherwise it might prevent underlying thread processing. A portable user of the callback should not make calls to network operations due to stack size limitations. The callback should not perform expensive operations such as socket recv/send calls or blocking operations.

Parameters:

result	NSAPI_ERROR_OK on success, negative error code on failure.
address	On success, destination for the host SocketAddress.

Definition at line 178 of file NetworkInterface.h.

Constructor & Destructor Documentation

ESP8266Interface ( )

ESP8266Interface default constructor Will use values defined in mbed_lib.json.

Definition at line 43 of file ESP8266Interface.cpp.

ESP8266Interface	(	PinName	tx,
		PinName	rx,
		bool	debug = `false`
	)

ESP8266Interface lifetime.

Parameters:

tx	TX pin
rx	RX pin
debug	Enable debugging

Definition at line 60 of file ESP8266Interface.cpp.

Member Function Documentation

nsapi_error_t add_dns_server ( const SocketAddress & address ) [virtual, inherited]

Add a domain name server to list of servers to query.

Parameters:

address Destination for the host address

Returns:: NSAPI_ERROR_OK on success, negative error code on failure

Definition at line 93 of file NetworkStack.cpp.

nsapi_error_t add_dns_server ( const SocketAddress & address ) [virtual, inherited]

Add a domain name server to list of servers to query.

Parameters:

address Address for the dns host.

Returns:: NSAPI_ERROR_OK on success, negative error code on failure.

Definition at line 73 of file NetworkInterface.cpp.

void attach ( mbed::Callback< void(nsapi_event_t, intptr_t)> status_cb ) [virtual]

Register callback for status reporting.

The specified status callback function will be called on status changes on the network. The parameters on the callback are the event type and event-type dependent reason parameter.

In ESP8266 the callback will be called when processing OOB-messages via AT-parser. Do NOT call any ESP8266Interface -functions or do extensive processing in the callback.

Parameters:

status_cb The callback for status changes

Reimplemented from NetworkInterface.

Definition at line 569 of file ESP8266Interface.cpp.

virtual CellularBase* cellularBase ( ) [virtual, inherited]

Return pointer to a CellularBase.

Returns:: Pointer to requested interface type or NULL if this class doesn't implement the interface.

Definition at line 272 of file NetworkInterface.h.

int connect	(	const char *	ssid,
		const char *	pass,
		nsapi_security_t	security = `NSAPI_SECURITY_NONE`,
		uint8_t	channel = `0`
	)		`[virtual]`

Start the interface.

Attempts to connect to a WiFi network.

Parameters:

ssid	Name of the network to connect to
pass	Security passphrase to connect to the network
security	Type of encryption for connection (Default: NSAPI_SECURITY_NONE)
channel	This parameter is not supported, setting it to anything else than 0 will result in NSAPI_ERROR_UNSUPPORTED

Returns:: 0 on success, or error code on failure

Definition at line 76 of file ESP8266Interface.cpp.

int connect ( ) [virtual]

Start the interface.

Attempts to connect to a WiFi network. Requires ssid and passphrase to be set. If passphrase is invalid, NSAPI_ERROR_AUTH_ERROR is returned.

Returns:: 0 on success, negative error code on failure

Implements NetworkInterface.

Definition at line 91 of file ESP8266Interface.cpp.

int disconnect ( void ) [virtual]

Stop the interface.

Returns:: 0 on success, negative on failure

Implements NetworkInterface.

Definition at line 181 of file ESP8266Interface.cpp.

virtual EMACInterface* emacInterface ( ) [virtual, inherited]

Return pointer to an EMACInterface.

Returns:: Pointer to requested interface type or NULL if this class doesn't implement the interface.

Reimplemented in EMACInterface.

Definition at line 280 of file NetworkInterface.h.

virtual EthInterface* ethInterface ( ) [virtual, inherited]

Return pointer to an EthInterface.

Returns:: Pointer to requested interface type or NULL if this class doesn't implement the interface.

Reimplemented in EthInterface.

Definition at line 248 of file NetworkInterface.h.

nsapi_connection_status_t get_connection_status ( ) const [virtual]

Get the connection status.

Returns:: The connection status according to ConnectionStatusType

Reimplemented from NetworkInterface.

Definition at line 574 of file ESP8266Interface.cpp.

MBED_WEAK WiFiInterface * get_default_instance ( ) [static, inherited]

Get the default Wi-Fi interface.

This is provided as a weak method so applications can override. Default behaviour is to get the target's default interface, if any.

Returns:: pointer to interface, if any.

Definition at line 581 of file ESP8266Interface.cpp.

nsapi_error_t get_dns_server	(	int	index,
		SocketAddress *	address
	)		`[virtual, inherited]`

Get a domain name server from a list of servers to query.

Returns a DNS server address for a index. If returns error no more DNS servers to read.

Parameters:

index	Index of the DNS server, starts from zero
address	Destination for the host address

Returns:: NSAPI_ERROR_OK on success, negative error code on failure

Definition at line 98 of file NetworkStack.cpp.

const char * get_gateway ( ) [virtual]

Get the local gateway.

Returns:: Null-terminated representation of the local gateway or null if no network mask has been recieved

Reimplemented from NetworkInterface.

Definition at line 208 of file ESP8266Interface.cpp.

const char * get_ip_address ( ) [virtual]

Get the internally stored IP address.

Returns:: IP address of the interface or null if not yet connected

Reimplemented from NetworkInterface.

Definition at line 189 of file ESP8266Interface.cpp.

const char * get_mac_address ( ) [virtual]

Get the internally stored MAC address.

Returns:: MAC address of the interface

Reimplemented from NetworkInterface.

Definition at line 203 of file ESP8266Interface.cpp.

const char * get_netmask ( ) [virtual]

Get the local network mask.

Returns:: Null-terminated representation of the local network mask or null if no network mask has been recieved

Reimplemented from NetworkInterface.

Definition at line 213 of file ESP8266Interface.cpp.

int8_t get_rssi ( ) [virtual]

Gets the current radio signal strength for active connection.

Returns:: Connection strength in dBm (negative value)

Definition at line 218 of file ESP8266Interface.cpp.

virtual NetworkStack* get_stack ( void ) [protected, virtual]

Provide access to the NetworkStack object.

Returns:: The underlying NetworkStack object

Implements NetworkInterface.

Definition at line 289 of file ESP8266Interface.h.

MBED_WEAK WiFiInterface * get_target_default_instance ( ) [static, protected, inherited]

Get the target's default Wi-Fi interface.

This is provided as a weak method so targets can override. The default implementation returns NULL.

Returns:: pointer to interface, if any.

Definition at line 54 of file NetworkInterfaceDefaults.cpp.

nsapi_error_t gethostbyname	(	const char *	host,
		SocketAddress *	address,
		nsapi_version_t	version = `NSAPI_UNSPEC`
	)		`[virtual, inherited]`

Translate a hostname to an IP address with specific version.

The hostname may be either a domain name or an IP address. If the hostname is an IP address, no network transactions will be performed.

If no stack-specific DNS resolution is provided, the hostname will be resolve using a UDP socket on the stack.

Parameters:

host	Hostname to resolve.
address	Pointer to a SocketAddress to store the result.
version	IP version of address to resolve, NSAPI_UNSPEC indicates version is chosen by the stack (defaults to NSAPI_UNSPEC).

Returns:: NSAPI_ERROR_OK on success, negative error code on failure.

Definition at line 58 of file NetworkInterface.cpp.

nsapi_error_t gethostbyname	(	const char *	host,
		SocketAddress *	address,
		nsapi_version_t	version = `NSAPI_UNSPEC`
	)		`[virtual, inherited]`

Translates a hostname to an IP address with specific version.

The hostname may be either a domain name or an IP address. If the hostname is an IP address, no network transactions will be performed.

If no stack-specific DNS resolution is provided, the hostname will be resolve using a UDP socket on the stack.

Parameters:

host	Hostname to resolve
address	Pointer to a SocketAddress to store the result.
version	IP version of address to resolve, NSAPI_UNSPEC indicates version is chosen by the stack (defaults to NSAPI_UNSPEC)

Returns:: NSAPI_ERROR_OK on success, negative error code on failure

Definition at line 29 of file NetworkStack.cpp.

nsapi_value_or_error_t gethostbyname_async	(	const char *	host,
		hostbyname_cb_t	callback,
		nsapi_version_t	version = `NSAPI_UNSPEC`
	)		`[virtual, inherited]`

Translate a hostname to an IP address (asynchronous).

The hostname may be either a domain name or a dotted IP address. If the hostname is an IP address, no network transactions will be performed.

If no stack-specific DNS resolution is provided, the hostname will be resolve using a UDP socket on the stack.

Call is non-blocking. Result of the DNS operation is returned by the callback. If this function returns failure, callback will not be called. In case result is success (IP address was found from DNS cache), callback will be called before function returns.

Parameters:

host	Hostname to resolve.
callback	Callback that is called for result.
version	IP version of address to resolve, NSAPI_UNSPEC indicates version is chosen by the stack (defaults to NSAPI_UNSPEC).

Returns:: 0 on immediate success, negative error code on immediate failure or a positive unique id that represents the hostname translation operation and can be passed to cancel.

Definition at line 63 of file NetworkInterface.cpp.

nsapi_value_or_error_t gethostbyname_async	(	const char *	host,
		hostbyname_cb_t	callback,
		nsapi_version_t	version = `NSAPI_UNSPEC`
	)		`[virtual, inherited]`

Translates a hostname to an IP address (asynchronous)

The hostname may be either a domain name or an IP address. If the hostname is an IP address, no network transactions will be performed.

If no stack-specific DNS resolution is provided, the hostname will be resolve using a UDP socket on the stack.

Call is non-blocking. Result of the DNS operation is returned by the callback. If this function returns failure, callback will not be called. In case result is success (IP address was found from DNS cache), callback will be called before function returns.

Parameters:

host	Hostname to resolve
callback	Callback that is called for result
version	IP version of address to resolve, NSAPI_UNSPEC indicates version is chosen by the stack (defaults to NSAPI_UNSPEC)

Returns:: 0 on immediate success, negative error code on immediate failure or a positive unique id that represents the hostname translation operation and can be passed to cancel

Definition at line 56 of file NetworkStack.cpp.

nsapi_error_t gethostbyname_async_cancel ( int id ) [virtual, inherited]

Cancels asynchronous hostname translation.

When translation is cancelled, callback will not be called.

Parameters:

id	Unique id of the hostname translation operation

Returns:: NSAPI_ERROR_OK on success, negative error code on failure

Definition at line 88 of file NetworkStack.cpp.

nsapi_error_t gethostbyname_async_cancel ( int id ) [virtual, inherited]

Cancel asynchronous hostname translation.

When translation is cancelled, callback will not be called.

Parameters:

id	Unique id of the hostname translation operation (returned by gethostbyname_async)

Returns:: NSAPI_ERROR_OK on success, negative error code on failure.

Definition at line 68 of file NetworkInterface.cpp.

nsapi_error_t getsockopt	(	nsapi_socket_t	handle,
		int	level,
		int	optname,
		void *	optval,
		unsigned *	optlen
	)		`[virtual]`

Definition at line 534 of file ESP8266Interface.cpp.

virtual MeshInterface* meshInterface ( ) [virtual, inherited]

Return pointer to a MeshInterface.

Returns:: Pointer to requested interface type or NULL if this class doesn't implement the interface.

Reimplemented in MeshInterface.

Definition at line 264 of file NetworkInterface.h.

virtual OnboardNetworkStack* onboardNetworkStack ( ) [virtual, inherited]

Dynamic downcast to a OnboardNetworkStack.

Definition at line 164 of file NetworkStack.h.

int scan	(	WiFiAccessPoint *	res,
		unsigned	count
	)		`[virtual]`

Scan for available networks.

This function will block.

Parameters:

ap	Pointer to allocated array to store discovered AP
count	Size of allocated res array, or 0 to only count available AP
timeout	Timeout in milliseconds; 0 for no timeout (Default: 0)

Returns:: Number of entries in , or if count was 0 number of available networks, negative on error see nsapi_error

Definition at line 223 of file ESP8266Interface.cpp.

virtual nsapi_size_or_error_t scan	(	WiFiAccessPoint *	res,
		nsapi_size_t	count
	)		`[pure virtual, inherited]`

Scan for available networks.

This function will block. If the count is 0, function will only return count of available networks, so that user can allocated necessary memory. If the count is grater than 0 and the a res is not NULL it'll be populated with discovered networks up to value of count.

Parameters:

res	Pointer to allocated array to store discovered APs.
count	Size of allocated res array, or 0 to only count available APs.

Returns:: Number of entries in res, or if count was 0 number of available networks. Negative on error (

See also:: nsapi_types.h for nsapi_error).

nsapi_error_t set_blocking ( bool blocking ) [virtual, inherited]

Set blocking status of connect() which by default should be blocking.

Parameters:

blocking Use true to make connect() blocking.

Returns:: NSAPI_ERROR_OK on success, negative error code on failure.

Reimplemented in CellularNetwork, AT_CellularNetwork, and EMACInterface.

Definition at line 87 of file NetworkInterface.cpp.

int set_channel ( uint8_t channel ) [virtual]

Set the WiFi network channel - NOT SUPPORTED.

This function is not supported and will return NSAPI_ERROR_UNSUPPORTED

Parameters:

channel Channel on which the connection is to be made, or 0 for any (Default: 0)

Returns:: Not supported, returns NSAPI_ERROR_UNSUPPORTED

Definition at line 175 of file ESP8266Interface.cpp.

int set_credentials	(	const char *	ssid,
		const char *	pass,
		nsapi_security_t	security = `NSAPI_SECURITY_NONE`
	)		`[virtual]`

Set the WiFi network credentials.

Parameters:

ssid	Name of the network to connect to
pass	Security passphrase to connect to the network
security	Type of encryption for connection (defaults to NSAPI_SECURITY_NONE)

Returns:: 0 on success, or error code on failure

Definition at line 136 of file ESP8266Interface.cpp.

nsapi_error_t set_dhcp ( bool dhcp ) [virtual, inherited]

Enable or disable DHCP on connecting the network.

Enabled by default unless a static IP address has been assigned. Requires that the network is disconnected.

Parameters:

dhcp	True to enable DHCP.

Returns:: NSAPI_ERROR_OK on success, negative error code on failure.

Reimplemented in EMACInterface.

Definition at line 48 of file NetworkInterface.cpp.

nsapi_error_t set_network	(	const char *	ip_address,
		const char *	netmask,
		const char *	gateway
	)		`[virtual, inherited]`

Configure this network interface to use a static IP address.

Implicitly disables DHCP, which can be enabled in set_dhcp. Requires that the network is disconnected.

Parameters:

ip_address	Null-terminated representation of the local IP address
netmask	Null-terminated representation of the local network mask
gateway	Null-terminated representation of the local gateway

Returns:: NSAPI_ERROR_OK on success, negative error code on failure

Reimplemented in EMACInterface.

Definition at line 43 of file NetworkInterface.cpp.

nsapi_error_t setsockopt	(	nsapi_socket_t	handle,
		int	level,
		int	optname,
		const void *	optval,
		unsigned	optlen
	)		`[virtual]`

Definition at line 501 of file ESP8266Interface.cpp.

virtual nsapi_error_t socket_accept	(	nsapi_socket_t	server,
		nsapi_socket_t *	handle,
		SocketAddress *	address = `0`
	)		`[protected, pure virtual, inherited]`

Accepts a connection on a TCP socket.

The server socket must be bound and set to listen for connections. On a new connection, creates a network socket and stores it in the specified handle. The handle must be passed to following calls on the socket.

A stack may have a finite number of sockets, in this case NSAPI_ERROR_NO_SOCKET is returned if no socket is available.

This call is non-blocking. If accept would block, NSAPI_ERROR_WOULD_BLOCK is returned immediately.

Parameters:

server	Socket handle to server to accept from
handle	Destination for a handle to the newly created socket
address	Destination for the remote address or NULL

Returns:: NSAPI_ERROR_OK on success, negative error code on failure

int socket_accept	(	void *	handle,
		void **	socket,
		SocketAddress *	address
	)		`[protected, virtual]`

Accept a new connection.

Parameters:

handle	Handle in which to store new socket
server	Socket handle to server to accept from

Returns:: 0 on success, negative on failure

Note:: This call is not-blocking, if this call would block, must immediately return NSAPI_ERROR_WOULD_WAIT

Definition at line 408 of file ESP8266Interface.cpp.

void socket_attach	(	void *	handle,
		void()(void )	callback,
		void *	data
	)		`[protected, virtual]`

Register a callback on state change of the socket.

Parameters:

handle	Socket handle
callback	Function to call on state change
data	Argument to pass to callback

Note:: Callback may be called in an interrupt context.

Definition at line 494 of file ESP8266Interface.cpp.

virtual void socket_attach	(	nsapi_socket_t	handle,
		void()(void )	callback,
		void *	data
	)		`[protected, pure virtual, inherited]`

Register a callback on state change of the socket.

The specified callback will be called on state changes such as when the socket can recv/send/accept successfully and on when an error occurs. The callback may also be called spuriously without reason.

The callback may be called in an interrupt context and should not perform expensive operations such as recv/send calls.

Parameters:

handle	Socket handle
callback	Function to call on state change
data	Argument to pass to callback

int socket_bind	(	void *	handle,
		const SocketAddress &	address
	)		`[protected, virtual]`

Bind a server socket to a specific port.

Parameters:

handle	Socket handle
address	Local address to listen for incoming connections on

Returns:: 0 on success, negative on failure.

Definition at line 352 of file ESP8266Interface.cpp.

virtual nsapi_error_t socket_bind	(	nsapi_socket_t	handle,
		const SocketAddress &	address
	)		`[protected, pure virtual, inherited]`

Bind a specific address to a socket.

Binding a socket specifies the address and port on which to receive data. If the IP address is zeroed, only the port is bound.

Parameters:

handle	Socket handle
address	Local address to bind

Returns:: NSAPI_ERROR_OK on success, negative error code on failure.

int socket_close ( void * handle ) [protected, virtual]

Close the socket.

Parameters:

handle Socket handle

Returns:: 0 on success, negative on failure

Note:: On failure, any memory associated with the socket must still be cleaned up

Definition at line 332 of file ESP8266Interface.cpp.

virtual nsapi_error_t socket_close ( nsapi_socket_t handle ) [protected, pure virtual, inherited]

Close the socket.

Closes any open connection and deallocates any memory associated with the socket.

Parameters:

handle Socket handle

Returns:: NSAPI_ERROR_OK on success, negative error code on failure

int socket_connect	(	void *	handle,
		const SocketAddress &	address
	)		`[protected, virtual]`

Connects this TCP socket to the server.

Parameters:

handle	Socket handle
address	SocketAddress to connect to

Returns:: 0 on success, negative on failure

Definition at line 384 of file ESP8266Interface.cpp.

virtual nsapi_error_t socket_connect	(	nsapi_socket_t	handle,
		const SocketAddress &	address
	)		`[protected, pure virtual, inherited]`

Connects TCP socket to a remote host.

Initiates a connection to a remote server specified by the indicated address.

Parameters:

handle	Socket handle
address	The SocketAddress of the remote host

Returns:: NSAPI_ERROR_OK on success, negative error code on failure

virtual nsapi_error_t socket_listen	(	nsapi_socket_t	handle,
		int	backlog
	)		`[protected, pure virtual, inherited]`

Listen for connections on a TCP socket.

Marks the socket as a passive socket that can be used to accept incoming connections.

Parameters:

handle	Socket handle
backlog	Number of pending connections that can be queued simultaneously

Returns:: NSAPI_ERROR_OK on success, negative error code on failure

int socket_listen	(	void *	handle,
		int	backlog
	)		`[protected, virtual]`

Start listening for incoming connections.

Parameters:

handle	Socket handle
backlog	Number of pending connections that can be queued up at any one time [Default: 1]

Returns:: 0 on success, negative on failure

Definition at line 379 of file ESP8266Interface.cpp.

virtual nsapi_error_t socket_open	(	nsapi_socket_t *	handle,
		nsapi_protocol_t	proto
	)		`[protected, pure virtual, inherited]`

Opens a socket.

Creates a network socket and stores it in the specified handle. The handle must be passed to following calls on the socket.

A stack may have a finite number of sockets, in this case NSAPI_ERROR_NO_SOCKET is returned if no socket is available.

Parameters:

handle	Destination for the handle to a newly created socket
proto	Protocol of socket to open, NSAPI_TCP or NSAPI_UDP

Returns:: NSAPI_ERROR_OK on success, negative error code on failure

int socket_open	(	void **	handle,
		nsapi_protocol_t	proto
	)		`[protected, virtual]`

Open a socket.

Parameters:

handle	Handle in which to store new socket
proto	Type of socket to open, NSAPI_TCP or NSAPI_UDP

Returns:: 0 on success, negative on failure

Definition at line 302 of file ESP8266Interface.cpp.

int socket_recv	(	void *	handle,
		void *	data,
		unsigned	size
	)		`[protected, virtual]`

Receive data from the remote host.

Parameters:

handle	Socket handle
data	The buffer in which to store the data received from the host
size	The maximum length of the buffer

Returns:: Number of received bytes on success, negative on failure

Note:: This call is not-blocking, if this call would block, must immediately return NSAPI_ERROR_WOULD_WAIT

Definition at line 427 of file ESP8266Interface.cpp.

virtual nsapi_size_or_error_t socket_recv	(	nsapi_socket_t	handle,
		void *	data,
		nsapi_size_t	size
	)		`[protected, pure virtual, inherited]`

Receive data over a TCP socket.

The socket must be connected to a remote host. Returns the number of bytes received into the buffer.

This call is non-blocking. If recv would block, NSAPI_ERROR_WOULD_BLOCK is returned immediately.

Parameters:

handle	Socket handle
data	Destination buffer for data received from the host
size	Size of the buffer in bytes

Returns:: Number of received bytes on success, negative error code on failure

virtual nsapi_size_or_error_t socket_recvfrom	(	nsapi_socket_t	handle,
		SocketAddress *	address,
		void *	buffer,
		nsapi_size_t	size
	)		`[protected, pure virtual, inherited]`

Receive a packet over a UDP socket.

Receives data and stores the source address in address if address is not NULL. Returns the number of bytes received into the buffer.

This call is non-blocking. If recvfrom would block, NSAPI_ERROR_WOULD_BLOCK is returned immediately.

Parameters:

handle	Socket handle
address	Destination for the source address or NULL
buffer	Destination buffer for data received from the host
size	Size of the buffer in bytes

Returns:: Number of received bytes on success, negative error code on failure

int socket_recvfrom	(	void *	handle,
		SocketAddress *	address,
		void *	buffer,
		unsigned	size
	)		`[protected, virtual]`

Receive a packet from a remote endpoint.

Parameters:

handle	Socket handle
address	Destination for the remote SocketAddress or null
buffer	The buffer for storing the incoming packet data If a packet is too long to fit in the supplied buffer, excess bytes are discarded
size	The length of the buffer

Returns:: The number of received bytes on success, negative on failure

Note:: This call is not-blocking, if this call would block, must immediately return NSAPI_ERROR_WOULD_WAIT

Definition at line 478 of file ESP8266Interface.cpp.

int socket_send	(	void *	handle,
		const void *	data,
		unsigned	size
	)		`[protected, virtual]`

Send data to the remote host.

Parameters:

handle	Socket handle
data	The buffer to send to the host
size	The length of the buffer to send

Returns:: Number of written bytes on success, negative on failure

Note:: This call is not-blocking, if this call would block, must immediately return NSAPI_ERROR_WOULD_WAIT

Definition at line 413 of file ESP8266Interface.cpp.

virtual nsapi_size_or_error_t socket_send	(	nsapi_socket_t	handle,
		const void *	data,
		nsapi_size_t	size
	)		`[protected, pure virtual, inherited]`

Send data over a TCP socket.

The socket must be connected to a remote host. Returns the number of bytes sent from the buffer.

This call is non-blocking. If send would block, NSAPI_ERROR_WOULD_BLOCK is returned immediately.

Parameters:

handle	Socket handle
data	Buffer of data to send to the host
size	Size of the buffer in bytes

Returns:: Number of sent bytes on success, negative error code on failure

virtual nsapi_size_or_error_t socket_sendto	(	nsapi_socket_t	handle,
		const SocketAddress &	address,
		const void *	data,
		nsapi_size_t	size
	)		`[protected, pure virtual, inherited]`

Send a packet over a UDP socket.

Sends data to the specified address. Returns the number of bytes sent from the buffer.

This call is non-blocking. If sendto would block, NSAPI_ERROR_WOULD_BLOCK is returned immediately.

Parameters:

handle	Socket handle
address	The SocketAddress of the remote host
data	Buffer of data to send to the host
size	Size of the buffer in bytes

Returns:: Number of sent bytes on success, negative error code on failure

int socket_sendto	(	void *	handle,
		const SocketAddress &	address,
		const void *	data,
		unsigned	size
	)		`[protected, virtual]`

Send a packet to a remote endpoint.

Parameters:

handle	Socket handle
address	The remote SocketAddress
data	The packet to be sent
size	The length of the packet to be sent

Returns:: The number of written bytes on success, negative on failure

Note:: This call is not-blocking, if this call would block, must immediately return NSAPI_ERROR_WOULD_WAIT

Definition at line 448 of file ESP8266Interface.cpp.

virtual WiFiInterface* wifiInterface ( ) [virtual, inherited]

Return pointer to a WiFiInterface.

Returns:: Pointer to requested interface type or NULL if this class doesn't implement the interface.

Definition at line 105 of file WiFiInterface.h.

Important changes to repositories hosted on mbed.com

ESP8266Interface Class Reference

Public Types

Public Member Functions

Static Public Member Functions

Protected Member Functions

Static Protected Member Functions

Friends

Detailed Description

Member Typedef Documentation

Constructor & Destructor Documentation

Member Function Documentation

Repository toolbox

Repository details

Important Information for this Arm website

Important changes to repositories hosted on mbed.com

ESP8266Interface Class Reference

Public Types

Public Member Functions

Static Public Member Functions

Protected Member Functions

Static Protected Member Functions

Friends

Detailed Description

Member Typedef Documentation

Constructor & Destructor Documentation

Member Function Documentation

Repository toolbox

Repository details

Important Information for this Arm website

Access Warning