ISM43362.h

00001 /* ISM43362Interface Example
00002  * Copyright (c) STMicroelectronics 2017
00003  *
00004  * Licensed under the Apache License, Version 2.0 (the "License");
00005  * you may not use this file except in compliance with the License.
00006  * You may obtain a copy of the License at
00007  *
00008  *     http://www.apache.org/licenses/LICENSE-2.0
00009  *
00010  * Unless required by applicable law or agreed to in writing, software
00011  * distributed under the License is distributed on an "AS IS" BASIS,
00012  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00013  * See the License for the specific language governing permissions and
00014  * limitations under the License.
00015  */
00016 
00017 #ifndef ISM43362_H
00018 #define ISM43362_H
00019 #include "ATParser.h"
00020 
00021 #define ES_WIFI_MAX_SSID_NAME_SIZE                  32
00022 #define ES_WIFI_MAX_PSWD_NAME_SIZE                  32
00023 #define ES_WIFI_PRODUCT_ID_SIZE                     32
00024 #define ES_WIFI_PRODUCT_NAME_SIZE                   32
00025 #define ES_WIFI_FW_REV_SIZE                         16
00026 #define ES_WIFI_API_REV_SIZE                        16
00027 #define ES_WIFI_STACK_REV_SIZE                      16
00028 #define ES_WIFI_RTOS_REV_SIZE                       16
00029 
00030 // The input range for AT Command 'R1' is 0 to 1200 bytes
00031 // 'R1' Set Read Transport Packet Size (bytes)
00032 #define ES_WIFI_MAX_RX_PACKET_SIZE                     1200
00033 // Module maxume DATA payload for Tx packet is 1460
00034 #define ES_WIFI_MAX_TX_PACKET_SIZE                     1460
00035 typedef enum ism_security {
00036     ISM_SECURITY_NONE         = 0x0,      /*!< open access point */
00037     ISM_SECURITY_WEP          = 0x1,      /*!< phrase conforms to WEP */
00038     ISM_SECURITY_WPA          = 0x2,      /*!< phrase conforms to WPA */
00039     ISM_SECURITY_WPA2         = 0x3,      /*!< phrase conforms to WPA2 */
00040     ISM_SECURITY_WPA_WPA2     = 0x4,      /*!< phrase conforms to WPA/WPA2 */
00041     ISM_SECURITY_UNKNOWN      = 0xFF,     /*!< unknown/unsupported security in scan results */
00042 } ism_security_t;
00043 
00044 extern "C" int32_t ParseNumber(char *ptr, uint8_t *cnt);
00045 
00046 /** ISM43362Interface class.
00047     This is an interface to a ISM43362 radio.
00048  */
00049 class ISM43362 {
00050 public:
00051     ISM43362(PinName mosi, PinName miso, PinName clk, PinName nss, PinName resetpin, PinName datareadypin, PinName wakeup, bool debug = false);
00052 
00053     /**
00054     * Check firmware version of ISM43362
00055     *
00056     * @return fw version or null if no version is read
00057     */
00058     uint32_t get_firmware_version(void);
00059 
00060     /**
00061     * Reset ISM43362
00062     *
00063     * @return true only if ISM43362 resets successfully
00064     */
00065     bool reset(void);
00066 
00067     /**
00068     * Enable/Disable DHCP
00069     *
00070     * @param enabled DHCP enabled when true
00071     * @return true only if ISM43362 enables/disables DHCP successfully
00072     */
00073     bool dhcp(bool enabled);
00074 
00075     /**
00076     * Connect ISM43362 to AP
00077     *
00078     * @param ap the name of the AP
00079     * @param passPhrase the password of AP
00080     * @param ap_sec the security level of network AP
00081     * @return nsapi_error enum
00082     */
00083     int connect(const char *ap, const char *passPhrase, ism_security_t ap_sec);
00084 
00085     /**
00086     * Disconnect ISM43362 from AP
00087     *
00088     * @return true only if ISM43362 is disconnected successfully
00089     */
00090     bool disconnect(void);
00091 
00092     /**
00093     * Get the IP address of ISM43362
00094     *
00095     * @return null-teriminated IP address or null if no IP address is assigned
00096     */
00097     const char *getIPAddress(void);
00098 
00099     /**
00100     * Get the MAC address of ISM43362
00101     *
00102     * @return null-terminated MAC address or null if no MAC address is assigned
00103     */
00104     const char *getMACAddress(void);
00105 
00106     /** Get the local gateway
00107     *
00108     *  @return         Null-terminated representation of the local gateway
00109     *                  or null if no network mask has been recieved
00110     */
00111     const char *getGateway();
00112 
00113     /** Get the local network mask
00114      *
00115      *  @return         Null-terminated representation of the local network mask
00116      *                  or null if no network mask has been recieved
00117      */
00118     const char *getNetmask();
00119 
00120     /* Return RSSI for active connection
00121      *
00122      * @return      Measured RSSI
00123      */
00124     int8_t getRSSI();
00125 
00126     /**
00127     * Check if ISM43362 is conenected
00128     *
00129     * @return true only if the chip has an IP address
00130     */
00131     bool isConnected(void);
00132 
00133     /** Scan for available networks
00134      *
00135      * @param  ap    Pointer to allocated array to store discovered AP
00136      * @param  limit Size of allocated @a res array, or 0 to only count available AP
00137      * @return       Number of entries in @a res, or if @a count was 0 number of available networks, negative on error
00138      *               see @a nsapi_error
00139      */
00140     int scan(WiFiAccessPoint *res, unsigned limit);
00141 
00142     /**Perform a dns query
00143     *
00144     * @param name Hostname to resolve
00145     * @param ip   Buffer to store IP address
00146     * @return 0 true on success, false on failure
00147     */
00148     bool dns_lookup(const char *name, char *ip);
00149 
00150     /**
00151     * Open a socketed connection
00152     *
00153     * @param type the type of socket to open "UDP" or "TCP"
00154     * @param id id to give the new socket, valid 0-4
00155     * @param port port to open connection with
00156     * @param addr the IP address of the destination
00157     * @return true only if socket opened successfully
00158     */
00159     bool open(const char *type, int id, const char *addr, int port);
00160 
00161     /**
00162     * Sends data to an open socket
00163     *
00164     * @param id id of socket to send to
00165     * @param data data to be sent
00166     * @param amount amount of data to be sent - max 1024
00167     * @return true only if data sent successfully
00168     */
00169     bool send(int id, const void *data, uint32_t amount);
00170 
00171     /**
00172     * Receives data from an open socket
00173     *
00174     * @param id id to receive from
00175     * @param data placeholder for returned information
00176     * @param amount number of bytes to be received
00177     * @return the number of bytes received
00178     */
00179     int32_t recv(int id, void *data, uint32_t amount);
00180 
00181     /**
00182     * Closes a socket
00183     *
00184     * @param id id of socket to close, valid only 0-4
00185     * @return true only if socket is closed successfully
00186     */
00187     bool close(int id);
00188 
00189     /**
00190     * Checks if data is available
00191     */
00192     bool readable();
00193 
00194     /**
00195     * Checks if data can be written
00196     */
00197     bool writeable();
00198 
00199     /**
00200     * Attach a function to call whenever network state has changed
00201     *
00202     * @param func A pointer to a void function, or 0 to set as none
00203     */
00204     void attach(Callback<void()> func);
00205 
00206     /**
00207     * Check is datas are available to read for a socket
00208     * @param id socket id
00209     * @param data placeholder for returned information
00210     * @param amount size to read for the check
00211     * @return amount of read value, or -1 for errors
00212     */
00213     int check_recv_status(int id, void *data);
00214 
00215     /**
00216     * Attach a function to call whenever network state has changed
00217     *
00218     * @param obj pointer to the object to call the member function on
00219     * @param method pointer to the member function to call
00220     */
00221     template <typename T, typename M>
00222     void attach(T *obj, M method)
00223     {
00224         attach(Callback<void()>(obj, method));
00225     }
00226 
00227     /** Get the connection status
00228      *
00229      *  @return         The connection status according to ConnectionStatusType
00230      */
00231     nsapi_connection_status_t connection_status() const;
00232 
00233 
00234 private:
00235     BufferedSpi _bufferspi;
00236     ATParser _parser;
00237     DigitalOut _resetpin;
00238     volatile int _active_id;
00239     void print_rx_buff(void);
00240     bool check_response(void);
00241     struct packet {
00242         struct packet *next;
00243         int id;
00244         uint32_t len;
00245         // data follows
00246     } *_packets, * *_packets_end;
00247     void _packet_handler();
00248     bool _ism_debug;
00249 
00250     char _ip_buffer[16];
00251     char _gateway_buffer[16];
00252     char _netmask_buffer[16];
00253     char _mac_buffer[18];
00254     uint32_t _FwVersionId;
00255 
00256     // Connection state reporting
00257     nsapi_connection_status_t _conn_status;
00258     mbed::Callback<void()> _conn_stat_cb;
00259 };
00260 
00261 #endif