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OneNet_IoT_demo for ASC platform
Dependencies: Common_lib ESP8266 EdpKit_lib cJSON_lib driver_mbed_HP20x driver_mbed_TH02 wifi_example
Fork of mbed-os-example-esp8266 by
esp8266-driver/ESP8266Interface.h
- Committer:
- group-ESP8266
- Date:
- 2017-01-12
- Revision:
- 0:b887535f68bf
- Child:
- 1:b4a718e62e0b
File content as of revision 0:b887535f68bf:
/* ESP8266 implementation of NetworkInterfaceAPI * Copyright (c) 2015 ARM Limited * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #ifndef ESP8266_INTERFACE_H #define ESP8266_INTERFACE_H #include "mbed.h" #include "ESP8266.h" #define ESP8266_SOCKET_COUNT 5 /** ESP8266Interface class * Implementation of the NetworkStack for the ESP8266 */ class ESP8266Interface : public NetworkStack, public WiFiInterface { public: /** ESP8266Interface lifetime * @param tx TX pin * @param rx RX pin * @param debug Enable debugging */ ESP8266Interface(PinName tx, PinName rx, bool debug = false); /** 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. * * @return 0 on success, negative error code on failure */ virtual int connect(); /** Start the interface * * Attempts to connect to a WiFi network. * * @param ssid Name of the network to connect to * @param pass Security passphrase to connect to the network * @param security Type of encryption for connection (Default: NSAPI_SECURITY_NONE) * @param channel This parameter is not supported, setting it to anything else than 0 will result in NSAPI_ERROR_UNSUPPORTED * @return 0 on success, or error code on failure */ virtual int connect(const char *ssid, const char *pass, nsapi_security_t security = NSAPI_SECURITY_NONE, uint8_t channel = 0); /** Set the WiFi network credentials * * @param ssid Name of the network to connect to * @param pass Security passphrase to connect to the network * @param security Type of encryption for connection * (defaults to NSAPI_SECURITY_NONE) * @return 0 on success, or error code on failure */ virtual int set_credentials(const char *ssid, const char *pass, nsapi_security_t security = NSAPI_SECURITY_NONE); /** Set the WiFi network channel - NOT SUPPORTED * * This function is not supported and will return NSAPI_ERROR_UNSUPPORTED * * @param channel Channel on which the connection is to be made, or 0 for any (Default: 0) * @return Not supported, returns NSAPI_ERROR_UNSUPPORTED */ virtual int set_channel(uint8_t channel); /** Stop the interface * @return 0 on success, negative on failure */ virtual int disconnect(); /** Get the internally stored IP address * @return IP address of the interface or null if not yet connected */ virtual const char *get_ip_address(); /** Get the internally stored MAC address * @return MAC address of the interface */ virtual const char *get_mac_address(); /** Get the local gateway * * @return Null-terminated representation of the local gateway * or null if no network mask has been recieved */ virtual const char *get_gateway(); /** Get the local network mask * * @return Null-terminated representation of the local network mask * or null if no network mask has been recieved */ virtual const char *get_netmask(); /** Gets the current radio signal strength for active connection * * @return Connection strength in dBm (negative value) */ virtual int8_t get_rssi(); /** Scan for available networks * * This function will block. * * @param ap Pointer to allocated array to store discovered AP * @param count Size of allocated @a res array, or 0 to only count available AP * @param timeout Timeout in milliseconds; 0 for no timeout (Default: 0) * @return Number of entries in @a, or if @a count was 0 number of available networks, negative on error * see @a nsapi_error */ virtual int scan(WiFiAccessPoint *res, unsigned count); protected: /** Open a socket * @param handle Handle in which to store new socket * @param proto Type of socket to open, NSAPI_TCP or NSAPI_UDP * @return 0 on success, negative on failure */ virtual int socket_open(void **handle, nsapi_protocol_t proto); /** Close the socket * @param handle Socket handle * @return 0 on success, negative on failure * @note On failure, any memory associated with the socket must still * be cleaned up */ virtual int socket_close(void *handle); /** Bind a server socket to a specific port * @param handle Socket handle * @param address Local address to listen for incoming connections on * @return 0 on success, negative on failure. */ virtual int socket_bind(void *handle, const SocketAddress &address); /** Start listening for incoming connections * @param handle Socket handle * @param backlog Number of pending connections that can be queued up at any * one time [Default: 1] * @return 0 on success, negative on failure */ virtual int socket_listen(void *handle, int backlog); /** Connects this TCP socket to the server * @param handle Socket handle * @param address SocketAddress to connect to * @return 0 on success, negative on failure */ virtual int socket_connect(void *handle, const SocketAddress &address); /** Accept a new connection. * @param handle Handle in which to store new socket * @param server Socket handle to server to accept from * @return 0 on success, negative on failure * @note This call is not-blocking, if this call would block, must * immediately return NSAPI_ERROR_WOULD_WAIT */ virtual int socket_accept(void *handle, void **socket, SocketAddress *address); /** Send data to the remote host * @param handle Socket handle * @param data The buffer to send to the host * @param size The length of the buffer to send * @return 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 */ virtual int socket_send(void *handle, const void *data, unsigned size); /** Receive data from the remote host * @param handle Socket handle * @param data The buffer in which to store the data received from the host * @param size The maximum length of the buffer * @return 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 */ virtual int socket_recv(void *handle, void *data, unsigned size); /** Send a packet to a remote endpoint * @param handle Socket handle * @param address The remote SocketAddress * @param data The packet to be sent * @param size The length of the packet to be sent * @return 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 */ virtual int socket_sendto(void *handle, const SocketAddress &address, const void *data, unsigned size); /** Receive a packet from a remote endpoint * @param handle Socket handle * @param address Destination for the remote SocketAddress or null * @param 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 * @param size The length of the buffer * @return 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 */ virtual int socket_recvfrom(void *handle, SocketAddress *address, void *buffer, unsigned size); /** Register a callback on state change of the socket * @param handle Socket handle * @param callback Function to call on state change * @param data Argument to pass to callback * @note Callback may be called in an interrupt context. */ virtual void socket_attach(void *handle, void (*callback)(void *), void *data); /** Provide access to the NetworkStack object * * @return The underlying NetworkStack object */ virtual NetworkStack *get_stack() { return this; } private: ESP8266 _esp; bool _ids[ESP8266_SOCKET_COUNT]; char ap_ssid[33]; /* 32 is what 802.11 defines as longest possible name; +1 for the \0 */ nsapi_security_t ap_sec; uint8_t ap_ch; char ap_pass[64]; /* The longest allowed passphrase */ void event(); struct { void (*callback)(void *); void *data; } _cbs[ESP8266_SOCKET_COUNT]; }; #endif