Diff: drivers/network/COMPONENT_WIFI_WIZFI310/WizFi310Interface.h

Revision:

0:8f0bb79ddd48

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/drivers/network/COMPONENT_WIFI_WIZFI310/WizFi310Interface.h	Tue May 04 08:55:12 2021 +0000
@@ -0,0 +1,280 @@
+/* WizFi310 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.
+ */
+
+/**
+  ******************************************************************************
+  * @file    WizFi310Interface.h
+  * @author  Gateway Team
+  * @brief   Header file of the NetworkStack for the WizFi310 WiFi Device
+  ******************************************************************************
+  * @attention
+  *
+  * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
+  * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
+  * TIME. AS A RESULT, WIZnet SHALL NOT BE HELD LIABLE FOR ANY
+  * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
+  * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
+  * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
+  *
+  * <h2><center>&copy; COPYRIGHT 2017 WIZnet Co.,Ltd.</center></h2>
+  ******************************************************************************
+  */
+
+#ifndef WIZFI310_INTERFACE_H
+#define WIZFI310_INTERFACE_H
+
+#include "mbed_trace.h"
+#include "NetworkStack.h"
+#include "WiFiInterface.h"
+#include "WizFi310.h"
+
+/** WizFi310Interface class
+ *  Implementation of the NetworkStack for the WizFi310
+ */
+class WizFi310Interface : public NetworkStack, public WiFiInterface {
+public:
+    /* WizFi310Interface constructor
+     */
+
+    WizFi310Interface(PinName tx = MBED_CONF_WIZFI310_TX,
+                      PinName rx = MBED_CONF_WIZFI310_RX,
+                      PinName rts = MBED_CONF_WIZFI310_RTS,
+                      PinName cts = MBED_CONF_WIZFI310_CTS,
+                      PinName rst = MBED_CONF_WIZFI310_RST);
+
+    /** 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();
+    virtual nsapi_connection_status_t get_connection_status() const;
+
+    virtual const char *get_ip_address();
+
+    /** Gets the current radio signal strength for active connection
+     *
+     * @return          Connection strength in dBm (negative value)
+     */
+    virtual int8_t get_rssi();
+    virtual nsapi_size_or_error_t scan(WiFiAccessPoint *res, nsapi_size_t count);
+    virtual void attach(Callback<void(nsapi_event_t, intptr_t)> status_cb);
+
+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:
+    struct wizfi310_socket {
+        WizFi310 &wifi;
+        Mutex op_mtx;
+        Mutex state_mtx;
+        nsapi_protocol_t proto;
+        SocketAddress addr;
+        Packet *first;
+        Packet *last;
+
+        int id;
+        volatile bool connected;
+
+        Semaphore semphr;
+        Callback<void (void *)> cbk;
+        void *data;
+
+        wizfi310_socket(WizFi310 &wiz, nsapi_protocol_t proto):
+            wifi(wiz),
+            op_mtx("wizfi310_socket_op"),
+            state_mtx("wizfi310_socket_state"),
+            proto(proto), first(NULL), last(NULL),
+            id(-1), connected(false),
+            semphr(0, 1), cbk(NULL), data(NULL) {}
+
+
+        void close();
+
+        ~wizfi310_socket();
+    };
+    struct scan_ctx_t {
+        uint32_t count;
+        uint32_t idx;
+        WiFiAccessPoint *res;
+    } volatile m_scan_ctx;
+
+    WizFi310 m_wizfi310;
+
+    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 */
+
+    Mutex m_mutex;
+    Semaphore m_semphr;
+    Callback<void(nsapi_event_t, intptr_t)>  m_on_status_change;
+    uint32_t m_socket_count;
+
+
+    void evt_rdy(bool dhcp, const char *ip, const char *gw, const char *mac);
+    void do_send_data(wizfi310_socket *s);
+    void scan_ap(nsapi_wifi_ap_t *ap);
+    void link_status_change(nsapi_connection_status_t event);
+    static void socket_event(void *ctx, WizFi310::socket_event_t type, WizFi310::socket_event_data_t &data);
+};
+
+#endif
+