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Data Structures | Public Types | Public Member Functions | Protected Member Functions
WhdSTAInterface Class Referenceabstract

WhdSTAInterface class Implementation of the NetworkStack for the WHD. More...

#include <WhdSTAInterface.h>

Inheritance diagram for WhdSTAInterface:
WiFiInterface EMACInterface NetworkInterface NetworkInterface DNS DNS

Data Structures

class  OlmInterface
 

Public Types

typedef mbed::Callback< void(nsapi_error_t result, SocketAddress *address)> hostbyname_cb_t
 Hostname translation callback (for use with gethostbyname_async()). More...
 

Public Member Functions

nsapi_error_t connect ()
 Start the interface. More...
 
nsapi_error_t connect (const char *ssid, const char *pass, nsapi_security_t security=NSAPI_SECURITY_NONE, uint8_t channel=0)
 Start the interface. More...
 
nsapi_error_t disconnect ()
 Stop the interface. More...
 
nsapi_error_t set_credentials (const char *ssid, const char *pass, nsapi_security_t security=NSAPI_SECURITY_NONE)
 Set the WiFi network credentials. More...
 
nsapi_error_t set_channel (uint8_t channel)
 Set the WiFi network channel - NOT SUPPORTED. More...
 
nsapi_error_t set_blocking (bool blocking)
 Set blocking status of interface. More...
 
int8_t get_rssi ()
 Gets the current radio signal strength for active connection. More...
 
int scan (WiFiAccessPoint *res, unsigned count)
 Scan for available networks in WiFiAccessPoint format. More...
 
int scan_whd (WhdAccessPoint *res, unsigned count)
 Scan for available networks in WhdAccessPoint format. More...
 
int set_olm (OlmInterface *olm)
 Set Offload Manager Information NOTE: Only allowed while disconnected. More...
 
int net_suspended ()
 Network stack is suspended. More...
 
int net_resuming ()
 Network stack is resuming. More...
 
virtual nsapi_size_or_error_t scan (WiFiAccessPoint *res, nsapi_size_t count)=0
 Scan for available networks. More...
 
virtual WiFiInterfacewifiInterface ()
 Return pointer to a WiFiInterface. More...
 
virtual void set_default_parameters ()
 defined(DOXYGEN_ONLY) More...
 
virtual void set_as_default ()
 Set network interface as default one. More...
 
virtual const char * get_mac_address ()
 Get the local MAC address. More...
 
virtual const char * get_ip_address ()
 Get the local IP address. More...
 
virtual const char * get_netmask ()
 Get the local network mask. More...
 
virtual const char * get_gateway ()
 Get the local gateway. More...
 
virtual char * get_interface_name (char *interface_name)
 Get the network interface name. More...
 
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. More...
 
virtual nsapi_error_t set_dhcp (bool dhcp)
 Enable or disable DHCP on connecting the network. More...
 
virtual nsapi_error_t gethostbyname (const char *host, SocketAddress *address, nsapi_version_t version=NSAPI_UNSPEC, const char *interface_name=NULL)
 Translate a hostname to an IP address with specific version using network interface name. More...
 
virtual nsapi_value_or_error_t gethostbyname_async (const char *host, hostbyname_cb_t callback, nsapi_version_t version=NSAPI_UNSPEC, const char *interface_name=NULL)
 Translate a hostname to an IP address (asynchronous) using network interface name. More...
 
virtual nsapi_error_t gethostbyname_async_cancel (int id)
 Cancel asynchronous hostname translation. More...
 
virtual nsapi_error_t add_dns_server (const SocketAddress &address, const char *interface_name)
 Add a domain name server to list of servers to query. More...
 
virtual void attach (mbed::Callback< void(nsapi_event_t, intptr_t)> status_cb)
 Register callback for status reporting. More...
 
void add_event_listener (mbed::Callback< void(nsapi_event_t, intptr_t)> status_cb)
 Add event listener for interface. More...
 
void remove_event_listener (mbed::Callback< void(nsapi_event_t, intptr_t)> status_cb)
 Remove event listener from interface. More...
 
virtual nsapi_connection_status_t get_connection_status () const
 Get the connection status. More...
 
virtual EthInterfaceethInterface ()
 Return pointer to an EthInterface. More...
 
virtual MeshInterfacemeshInterface ()
 Return pointer to a MeshInterface. More...
 
virtual CellularInterfacecellularBase ()
 Return pointer to a CellularInterface. More...
 
virtual EMACInterfaceemacInterface ()
 Return pointer to an EMACInterface. More...
 
virtual CellularInterfacecellularInterface ()
 Return pointer to a CellularInterface. More...
 
virtual nsapi_error_t set_network (const char *ip_address, const char *netmask, const char *gateway)
 Set a static IP address. More...
 
virtual nsapi_error_t set_dhcp (bool dhcp)
 Enable or disable DHCP on the network. More...
 
virtual const char * get_mac_address ()
 Get the local MAC address. More...
 
virtual const char * get_ip_address ()
 Get the local IP address. More...
 
virtual const char * get_netmask ()
 Get the local network mask. More...
 
virtual const char * get_gateway ()
 Get the local gateways. More...
 
virtual char * get_interface_name (char *interface_name)
 Get the network interface name. More...
 
virtual void set_as_default ()
 Set the network interface as default one. More...
 
virtual void attach (mbed::Callback< void(nsapi_event_t, intptr_t)> status_cb)
 Register callback for status reporting. More...
 
virtual nsapi_connection_status_t get_connection_status () const
 Get the connection status. More...
 
EMACget_emac () const
 Provide access to the EMAC. More...
 
virtual EMACInterfaceemacInterface ()
 Return pointer to an EMACInterface. More...
 

Protected Member Functions

virtual NetworkStackget_stack ()
 Provide access to the underlying stack. More...
 

Detailed Description

WhdSTAInterface class Implementation of the NetworkStack for the WHD.

Definition at line 34 of file WhdSTAInterface.h.

Member Typedef Documentation

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
resultNSAPI_ERROR_OK on success, negative error code on failure.
addressOn success, destination for the host SocketAddress.

Definition at line 219 of file NetworkInterface.h.

Member Function Documentation

virtual nsapi_error_t add_dns_server ( const SocketAddress address,
const char *  interface_name 
)
virtualinherited

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

Parameters
addressAddress for the dns host.
Returns
NSAPI_ERROR_OK on success, negative error code on failure.

Implements DNS.

void add_event_listener ( mbed::Callback< void(nsapi_event_t, intptr_t)>  status_cb)
inherited

Add event listener for interface.

This API allows multiple callback to be registered for a single interface. When first called, internal list of event handlers are created and registered to interface through attach() API.

Application may only use attach() or add_event_listener() interface. Mixing usage of both leads to undefined behavior.

Parameters
status_cbThe callback for status changes.
virtual void attach ( mbed::Callback< void(nsapi_event_t, intptr_t)>  status_cb)
virtualinherited

Register callback for status reporting.

Parameters
status_cbThe callback for status changes

Reimplemented from NetworkInterface.

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

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. Only one callback can be registered at a time.

To unregister a callback call with status_cb parameter as a zero.

NOTE: Any callbacks registered with this function will be overwritten if add_event_listener() API is used.

Parameters
status_cbThe callback for status changes.

Reimplemented in CellularContext, EMACInterface, L3IPInterface, InterfaceNanostack, PPPInterface, and AT_CellularContext.

virtual CellularInterface* cellularBase ( )
virtualinherited

Return pointer to a CellularInterface.

Returns
Pointer to requested interface type or NULL if this class doesn't implement the interface.
Deprecated:
CellularBase migrated to CellularInterface - use cellularInterface()

Reimplemented in CellularInterface.

Definition at line 347 of file NetworkInterface.h.

virtual CellularInterface* cellularInterface ( )
virtualinherited

Return pointer to a CellularInterface.

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

Reimplemented in CellularInterface.

Definition at line 424 of file NetworkInterface.h.

nsapi_error_t 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

Reimplemented from EMACInterface.

nsapi_error_t 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
ssidName of the network to connect to
passSecurity passphrase to connect to the network
securityType of encryption for connection (Default: NSAPI_SECURITY_NONE)
channelThis 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

Implements WiFiInterface.

nsapi_error_t disconnect ( )
virtual

Stop the interface.

Returns
0 on success, negative on failure

Reimplemented from EMACInterface.

virtual EMACInterface* emacInterface ( )
virtualinherited

Return pointer to an EMACInterface.

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

Reimplemented from NetworkInterface.

Definition at line 163 of file EMACInterface.h.

virtual EMACInterface* emacInterface ( )
virtualinherited

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 355 of file NetworkInterface.h.

virtual EthInterface* ethInterface ( )
virtualinherited

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 321 of file NetworkInterface.h.

virtual nsapi_connection_status_t get_connection_status ( ) const
virtualinherited

Get the connection status.

Returns
The connection status according to nsapi_connection_status_t

Reimplemented from NetworkInterface.

virtual nsapi_connection_status_t get_connection_status ( ) const
virtualinherited

Get the connection status.

Returns
The connection status (
See also
nsapi_types.h).

Reimplemented in EMACInterface, L3IPInterface, InterfaceNanostack, PPPInterface, and AT_CellularContext.

EMAC& get_emac ( ) const
inherited

Provide access to the EMAC.

This should be used with care - normally the network stack would control the EMAC, so manipulating the EMAC while the stack is also using it (ie after connect) will likely cause problems.

Returns
Reference to the EMAC in use

Definition at line 158 of file EMACInterface.h.

virtual const char* get_gateway ( )
virtualinherited

Get the local gateways.

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

Reimplemented from NetworkInterface.

virtual const char* get_gateway ( )
virtualinherited

Get the local gateway.

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

Reimplemented in CellularContext, EMACInterface, CellularInterface, L3IPInterface, PPPInterface, and AT_CellularContext.

virtual char* get_interface_name ( char *  interface_name)
virtualinherited

Get the network interface name.

Returns
Null-terminated representation of the network interface name or null if interface not exists

Reimplemented from NetworkInterface.

virtual char* get_interface_name ( char *  interface_name)
virtualinherited

Get the network interface name.

Returns
Null-terminated representation of the network interface name or null if interface not exists

Reimplemented in EMACInterface, L3IPInterface, PPPInterface, and AT_CellularContext.

virtual const char* get_ip_address ( )
virtualinherited

Get the local IP address.

Returns
Null-terminated representation of the local IP address or null if no IP address has been received

Reimplemented from NetworkInterface.

virtual const char* get_ip_address ( )
virtualinherited

Get the local IP address.

Returns
Null-terminated representation of the local IP address or null if not yet connected

Reimplemented in CellularContext, InterfaceNanostack, EMACInterface, CellularInterface, L3IPInterface, PPPInterface, and AT_CellularContext.

virtual const char* get_mac_address ( )
virtualinherited

Get the local MAC address.

Provided MAC address is intended for info or debug purposes and may not be provided if the underlying network interface does not provide a MAC address

Returns
Null-terminated representation of the local MAC address or null if no MAC address is available

Reimplemented from NetworkInterface.

virtual const char* get_mac_address ( )
virtualinherited

Get the local MAC address.

Provided MAC address is intended for info or debug purposes and may be not provided if the underlying network interface does not provide a MAC address.

Returns
Null-terminated representation of the local MAC address or null if no MAC address is available.

Reimplemented in InterfaceNanostack, and EMACInterface.

virtual const char* get_netmask ( )
virtualinherited

Get the local network mask.

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

Reimplemented from NetworkInterface.

virtual const char* get_netmask ( )
virtualinherited

Get the local network mask.

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

Reimplemented in CellularContext, EMACInterface, CellularInterface, L3IPInterface, PPPInterface, and AT_CellularContext.

int8_t get_rssi ( )
virtual

Gets the current radio signal strength for active connection.

Returns
Connection strength in dBm (negative value)

Implements WiFiInterface.

virtual NetworkStack* get_stack ( )
protectedvirtualinherited

Provide access to the underlying stack.

Returns
The underlying network stack
virtual nsapi_error_t gethostbyname ( const char *  host,
SocketAddress address,
nsapi_version_t  version = NSAPI_UNSPEC,
const char *  interface_name = NULL 
)
virtualinherited

Translate a hostname to an IP address with specific version using network interface name.

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
hostHostname to resolve.
addressPointer to a SocketAddress to store the result.
versionIP version of address to resolve, NSAPI_UNSPEC indicates version is chosen by the stack (defaults to NSAPI_UNSPEC).
interface_nameNetwork interface name
Returns
NSAPI_ERROR_OK on success, negative error code on failure.

Implements DNS.

virtual nsapi_value_or_error_t gethostbyname_async ( const char *  host,
hostbyname_cb_t  callback,
nsapi_version_t  version = NSAPI_UNSPEC,
const char *  interface_name = NULL 
)
virtualinherited

Translate a hostname to an IP address (asynchronous) using network interface name.

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
hostHostname to resolve.
callbackCallback that is called for result.
versionIP version of address to resolve, NSAPI_UNSPEC indicates version is chosen by the stack (defaults to NSAPI_UNSPEC).
interface_nameNetwork interface name
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.

Implements DNS.

virtual nsapi_error_t gethostbyname_async_cancel ( int  id)
virtualinherited

Cancel asynchronous hostname translation.

When translation is cancelled, callback will not be called.

Parameters
idUnique id of the hostname translation operation (returned by gethostbyname_async)
Returns
NSAPI_ERROR_OK on success, negative error code on failure.

Implements DNS.

virtual MeshInterface* meshInterface ( )
virtualinherited

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 337 of file NetworkInterface.h.

int net_resuming ( )

Network stack is resuming.

Returns
0 if successful

Definition at line 236 of file WhdSTAInterface.h.

int net_suspended ( )

Network stack is suspended.

Returns
0 if successful

Definition at line 226 of file WhdSTAInterface.h.

void remove_event_listener ( mbed::Callback< void(nsapi_event_t, intptr_t)>  status_cb)
inherited

Remove event listener from interface.

Remove previously added callback from the handler list.

Parameters
status_cbThe callback to unregister.
virtual nsapi_size_or_error_t scan ( WiFiAccessPoint res,
nsapi_size_t  count 
)
pure virtualinherited

Scan for available networks.

Note
This is a blocking function.

If the count is 0, the function only returns the number of available networks. If the count is greater than 0 and the res is not NULL, the array of discovered APs is populated with discovered networks up to the value of the count.

Parameters
resPointer to allocated array to store discovered APs.
countSize 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).

Implemented in RDAWiFiInterface.

int scan ( WiFiAccessPoint res,
unsigned  count 
)

Scan for available networks in WiFiAccessPoint format.

This function will block.

Parameters
apPointer to allocated array of WiFiAccessPoint format for discovered AP
countSize of allocated res array, or 0 to only count available AP
timeoutTimeout 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
int scan_whd ( WhdAccessPoint res,
unsigned  count 
)

Scan for available networks in WhdAccessPoint format.

This function will block.

Parameters
apPointer to allocated array of WhdAccessPoint format for discovered AP
countSize of allocated res array, or 0 to only count available AP
timeoutTimeout 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
virtual void set_as_default ( )
virtualinherited

Set network interface as default one.

Reimplemented in EMACInterface, L3IPInterface, and PPPInterface.

virtual void set_as_default ( )
virtualinherited

Set the network interface as default one.

Reimplemented from NetworkInterface.

nsapi_error_t set_blocking ( bool  blocking)
virtual

Set blocking status of interface.

Nonblocking mode unsupported.

Parameters
blockingtrue if connect is blocking
Returns
0 on success, negative error code on failure

Reimplemented from EMACInterface.

Definition at line 128 of file WhdSTAInterface.h.

nsapi_error_t 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
channelChannel on which the connection is to be made, or 0 for any (Default: 0)
Returns
Not supported, returns NSAPI_ERROR_UNSUPPORTED

Implements WiFiInterface.

Definition at line 113 of file WhdSTAInterface.h.

nsapi_error_t set_credentials ( const char *  ssid,
const char *  pass,
nsapi_security_t  security = NSAPI_SECURITY_NONE 
)
virtual

Set the WiFi network credentials.

Parameters
ssidName of the network to connect to
passSecurity passphrase to connect to the network
securityType of encryption for connection (defaults to NSAPI_SECURITY_NONE)
Returns
0 on success, or error code on failure

Implements WiFiInterface.

virtual void set_default_parameters ( )
virtualinherited

defined(DOXYGEN_ONLY)

Set default parameters on a Wi-Fi interface.

A Wi-Fi interface instantiated directly or using WiFiInterface::get_default_instance() is initially unconfigured. This call can be used to set the default parameters that would have been set if the interface had been requested using NetworkInterface::get_default_instance() (see nsapi JSON configuration).

Reimplemented from NetworkInterface.

virtual nsapi_error_t set_dhcp ( bool  dhcp)
virtualinherited

Enable or disable DHCP on the network.

Requires that the network is disconnected

Parameters
dhcpFalse to disable dhcp (defaults to enabled)
Returns
0 on success, negative error code on failure

Reimplemented from NetworkInterface.

virtual nsapi_error_t set_dhcp ( bool  dhcp)
virtualinherited

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
dhcpTrue to enable DHCP.
Returns
NSAPI_ERROR_OK on success, negative error code on failure.

Reimplemented in EMACInterface, and L3IPInterface.

virtual nsapi_error_t set_network ( const char *  ip_address,
const char *  netmask,
const char *  gateway 
)
virtualinherited

Set a static IP address.

Configures 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_addressNull-terminated representation of the local IP address
netmaskNull-terminated representation of the local network mask
gatewayNull-terminated representation of the local gateway
Returns
0 on success, negative error code on failure

Reimplemented from NetworkInterface.

virtual nsapi_error_t set_network ( const char *  ip_address,
const char *  netmask,
const char *  gateway 
)
virtualinherited

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_addressNull-terminated representation of the local IP address
netmaskNull-terminated representation of the local network mask
gatewayNull-terminated representation of the local gateway
Returns
NSAPI_ERROR_OK on success, negative error code on failure

Reimplemented in EMACInterface, L3IPInterface, and PPPInterface.

int set_olm ( OlmInterface olm)

Set Offload Manager Information NOTE: Only allowed while disconnected.

Parameters
olmOffload Manager info structure
Returns
true if completed successfully false if Interface is connected

Definition at line 213 of file WhdSTAInterface.h.

virtual WiFiInterface* wifiInterface ( )
virtualinherited

Return pointer to a WiFiInterface.

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

Reimplemented from NetworkInterface.

Definition at line 109 of file WiFiInterface.h.

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