W5200.h

00001 /* Copyright (C) 2012 mbed.org, MIT License
00002  *
00003  * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
00004  * and associated documentation files (the "Software"), to deal in the Software without restriction,
00005  * including without limitation the rights to use, copy, modify, merge, publish, distribute,
00006  * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
00007  * furnished to do so, subject to the following conditions:
00008  *
00009  * The above copyright notice and this permission notice shall be included in all copies or
00010  * substantial portions of the Software.
00011  *
00012  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
00013  * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
00014  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
00015  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
00016  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
00017  *
00018  */
00019 
00020 #pragma once
00021 
00022 #include "mbed.h"
00023 #include "mbed_debug.h"
00024 
00025 #define TEST_ASSERT(A) while(!(A)){debug("\n\n%s@%d %s ASSERT!\n\n",__PRETTY_FUNCTION__,__LINE__,#A);exit(1);};
00026 
00027 #define DEFAULT_WAIT_RESP_TIMEOUT 500
00028 
00029 enum Protocol {
00030     CLOSED = 0,
00031     TCP    = 1,
00032     UDP    = 2,
00033 };
00034 
00035 enum Command {
00036     OPEN      = 0x01,
00037     LISTEN    = 0x02,
00038     CONNECT   = 0x04,
00039     DISCON    = 0x08,
00040     CLOSE     = 0x10,
00041     SEND      = 0x20,
00042     SEND_MAC  = 0x21, 
00043     SEND_KEEP = 0x22,
00044     RECV      = 0x40,
00045     
00046 };
00047 
00048 enum Interrupt {
00049     INT_CON     = 0x01,
00050     INT_DISCON  = 0x02,
00051     INT_RECV    = 0x04,
00052     INT_TIMEOUT = 0x08,
00053     INT_SEND_OK = 0x10,
00054 };
00055 
00056 enum Status {
00057     SOCK_CLOSED      = 0x00,
00058     SOCK_INIT        = 0x13,
00059     SOCK_LISTEN      = 0x14,
00060     SOCK_SYNSENT     = 0x15,
00061     SOCK_ESTABLISHED = 0x17,
00062     SOCK_CLOSE_WAIT  = 0x1c,
00063     SOCK_UDP         = 0x22,
00064 };
00065 
00066 #define MAX_SOCK_NUM 8
00067 
00068 #define MR        0x0000
00069 #define GAR       0x0001
00070 #define SUBR      0x0005
00071 #define SHAR      0x0009
00072 #define SIPR      0x000f
00073 #define PHYSTATUS 0x0035
00074 
00075 // W5200 socket
00076 #define Sn_MR         0x4000
00077 #define Sn_CR         0x4001
00078 #define Sn_IR         0x4002
00079 #define Sn_SR         0x4003
00080 #define Sn_PORT       0x4004
00081 #define Sn_DIPR       0x400c
00082 #define Sn_DPORT      0x4010
00083 #define Sn_RXBUF_SIZE 0x401e
00084 #define Sn_TXBUF_SIZE 0x401f
00085 #define Sn_TX_FSR     0x4020
00086 #define Sn_TX_WR      0x4024
00087 #define Sn_RX_RSR     0x4026
00088 #define Sn_RX_RD      0x4028
00089 
00090 class WIZnet_Chip {
00091 public:
00092     /*
00093     * Constructor
00094     *
00095     * @param spi spi class
00096     * @param cs cs of the W5200
00097     * @param reset reset pin of the W5200
00098     */
00099     WIZnet_Chip(PinName mosi, PinName miso, PinName sclk, PinName cs, PinName reset);
00100     WIZnet_Chip(SPI* spi, PinName cs, PinName reset);
00101 
00102     /*
00103     * Connect the W5200 module to the ssid contained in the constructor.
00104     *
00105     * @return true if connected, false otherwise
00106     */
00107     bool setip();
00108 
00109     /*
00110     * Disconnect the W5200 module from the access point
00111     *
00112     * @ returns true if successful
00113     */
00114     bool disconnect();
00115 
00116     /*
00117     * Open a tcp connection with the specified host on the specified port
00118     *
00119     * @param host host (can be either an ip address or a name. If a name is provided, a dns request will be established)
00120     * @param port port
00121     * @ returns true if successful
00122     */
00123     bool connect(int socket, const char * host, int port, int timeout_ms = 10*1000);
00124 
00125     /*
00126     * Set the protocol (UDP or TCP)
00127     *
00128     * @param p protocol
00129     * @ returns true if successful
00130     */
00131     bool setProtocol(int socket, Protocol p);
00132 
00133     /*
00134     * Reset the W5200 module
00135     */
00136     void reset();
00137     
00138    
00139     int wait_readable(int socket, int wait_time_ms, int req_size = 0);
00140 
00141     int wait_writeable(int socket, int wait_time_ms, int req_size = 0);
00142 
00143     /*
00144     * Check if a tcp link is active
00145     *
00146     * @returns true if successful
00147     */
00148     bool is_connected(int socket);
00149 
00150     /*
00151     * Close a tcp connection
00152     *
00153     * @ returns true if successful
00154     */
00155     bool close(int socket);
00156 
00157     /*
00158     * @param str string to be sent
00159     * @param len string length
00160     */
00161     int send(int socket, const char * str, int len);
00162 
00163     int recv(int socket, char* buf, int len);
00164 
00165     /*
00166     * Return true if the module is using dhcp
00167     *
00168     * @returns true if the module is using dhcp
00169     */
00170     bool isDHCP() {
00171         return dhcp;
00172     }
00173 
00174     bool gethostbyname(const char* host, uint32_t* ip);
00175 
00176     static WIZnet_Chip * getInstance() {
00177         return inst;
00178     };
00179 
00180     int new_socket();
00181     uint16_t new_port();
00182     void scmd(int socket, Command cmd);
00183 
00184     template<typename T>
00185     void sreg(int socket, uint16_t addr, T data) {
00186         reg_wr<T>(addr+0x100*socket, data);
00187     }
00188 
00189     template<typename T>
00190     T sreg(int socket, uint16_t addr) {
00191         return reg_rd<T>(addr+0x100*socket);
00192     }
00193 
00194     template<typename T>
00195     void reg_wr(uint16_t addr, T data) {
00196         uint8_t buf[sizeof(T)];
00197         *reinterpret_cast<T*>(buf) = data;
00198         for(int i = 0; i < sizeof(buf)/2; i++) { //  Little Endian to Big Endian
00199             uint8_t t = buf[i];
00200             buf[i] = buf[sizeof(buf)-1-i];
00201             buf[sizeof(buf)-1-i] = t;
00202         }
00203         spi_write(addr, buf, sizeof(buf));
00204     }
00205 
00206     template<typename T>
00207     T reg_rd(uint16_t addr) {
00208         uint8_t buf[sizeof(T)];
00209         spi_read(addr, buf, sizeof(buf));
00210         for(int i = 0; i < sizeof(buf)/2; i++) { // Big Endian to Little Endian
00211             uint8_t t = buf[i];
00212             buf[i] = buf[sizeof(buf)-1-i];
00213             buf[sizeof(buf)-1-i] = t;
00214         }
00215         return *reinterpret_cast<T*>(buf);
00216     }
00217 
00218     void reg_rd_mac(uint16_t addr, uint8_t* data) {
00219         spi_read(addr, data, 6);
00220     }
00221 
00222     void reg_wr_ip(uint16_t addr, const char* ip) {
00223         uint8_t buf[4];
00224         char* p = (char*)ip;
00225         for(int i = 0; i < 4; i++) {
00226             buf[i] = atoi(p);
00227             p = strchr(p, '.');
00228             if (p == NULL) {
00229                 break;
00230             }
00231             p++;
00232         }
00233         spi_write(addr, buf, sizeof(buf));
00234     }
00235 
00236     void sreg_ip(int socket, uint16_t addr, const char* ip) {
00237         reg_wr_ip(addr+0x100*socket, ip);
00238     }
00239 
00240 protected:
00241     uint8_t mac[6];
00242     uint32_t ip;
00243     uint32_t netmask;
00244     uint32_t gateway;
00245     uint32_t dnsaddr;
00246     bool dhcp;
00247 
00248     static WIZnet_Chip* inst;
00249 
00250     void reg_wr_mac(uint16_t addr, uint8_t* data) {
00251         spi_write(addr, data, 6);
00252     }
00253 
00254     void spi_write(uint16_t addr, const uint8_t *buf, uint16_t len);
00255     void spi_read(uint16_t addr, uint8_t *buf, uint16_t len);
00256     SPI* spi;
00257     DigitalOut cs;
00258     DigitalOut reset_pin;
00259 };
00260 
00261 extern uint32_t str_to_ip(const char* str);
00262 extern void printfBytes(char* str, uint8_t* buf, int len);
00263 extern void printHex(uint8_t* buf, int len);
00264 extern void debug_hex(uint8_t* buf, int len);