Diff: Wifly/Wifly.cpp

Revision:

5:fb15c35d1e28

Parent:

4:0bcec6272784

--- a/Wifly/Wifly.cpp	Thu Dec 20 15:08:58 2012 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,546 +0,0 @@
-/* Copyright (C) 2012 mbed.org, MIT License
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
- * and associated documentation files (the "Software"), to deal in the Software without restriction,
- * including without limitation the rights to use, copy, modify, merge, publish, distribute,
- * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in all copies or
- * substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
- * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
- * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
- * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- */
-
-#include "mbed.h"
-#include "Wifly.h"
-#include <string>
-#include <algorithm>
-
-//Debug is disabled by default
-#if (0 && !defined(TARGET_LPC11U24))
-#define DBG(x, ...) std::printf("[Wifly : DBG]"x"\r\n", ##__VA_ARGS__);
-#define WARN(x, ...) std::printf("[Wifly : WARN]"x"\r\n", ##__VA_ARGS__);
-#define ERR(x, ...) std::printf("[Wifly : ERR]"x"\r\n", ##__VA_ARGS__);
-#else
-#define DBG(x, ...)
-#define WARN(x, ...)
-#define ERR(x, ...)
-#endif
-
-#if !defined(TARGET_LPC11U24)
-#define INFO(x, ...) printf("[Wifly : INFO]"x"\r\n", ##__VA_ARGS__);
-#else
-#define INFO(x, ...)
-#endif
-
-#define MAX_TRY_JOIN 3
-
-Wifly * Wifly::inst;
-
-Wifly::Wifly(   PinName tx, PinName rx, PinName _reset, PinName tcp_status, const char * ssid, const char * phrase, Security sec):
-    wifi(tx, rx), reset_pin(_reset), tcp_status(tcp_status), buf_wifly(256)
-{
-    memset(&state, 0, sizeof(state));
-    state.sec = sec;
-
-    // change all ' ' in '$' in the ssid and the passphrase
-    strcpy(this->ssid, ssid);
-    for (int i = 0; i < strlen(ssid); i++) {
-        if (this->ssid[i] == ' ')
-            this->ssid[i] = '$';
-    }
-    strcpy(this->phrase, phrase);
-    for (int i = 0; i < strlen(phrase); i++) {
-        if (this->phrase[i] == ' ')
-            this->phrase[i] = '$';
-    }
-
-    inst = this;
-    attach_rx(false);
-    state.cmd_mode = false;
-}
-
-bool Wifly::join()
-{
-    char cmd[20];
-
-    for (int i= 0; i < MAX_TRY_JOIN; i++) {
-
-        // no auto join
-        if (!sendCommand("set w j 0\r", "AOK"))
-            continue;
-
-        //no echo
-        if (!sendCommand("set u m 1\r", "AOK"))
-            continue;
-
-        // set time
-        if (!sendCommand("set c t 30\r", "AOK"))
-            continue;
-
-        // set size
-        if (!sendCommand("set c s 1024\r", "AOK"))
-            continue;
-
-        // red led on when tcp connection active
-        if (!sendCommand("set s i 0x40\r", "AOK"))
-            continue;
-
-        // no string sent to the tcp client
-        if (!sendCommand("set c r 0\r", "AOK"))
-            continue;
-
-        // tcp protocol
-        if (!sendCommand("set i p 2\r", "AOK"))
-            continue;
-
-        // tcp retry
-        if (!sendCommand("set i f 0x7\r", "AOK"))
-            continue;
-            
-        // set dns server
-        if (!sendCommand("set d n rn.microchip.com\r", "AOK"))
-            continue;
-
-        //dhcp
-        sprintf(cmd, "set i d %d\r", (state.dhcp) ? 1 : 0);
-        if (!sendCommand(cmd, "AOK"))
-            continue;
-
-        // ssid
-        sprintf(cmd, "set w s %s\r", ssid);
-        if (!sendCommand(cmd, "AOK"))
-            continue;
-
-        //auth
-        sprintf(cmd, "set w a %d\r", state.sec);
-        if (!sendCommand(cmd, "AOK"))
-            continue;
-
-        // if no dhcp, set ip, netmask and gateway
-        if (!state.dhcp) {
-            DBG("not dhcp\r");
-
-            sprintf(cmd, "set i a %s\r\n", ip);
-            if (!sendCommand(cmd, "AOK"))
-                continue;
-
-            sprintf(cmd, "set i n %s\r", netmask);
-            if (!sendCommand(cmd, "AOK"))
-                continue;
-
-            sprintf(cmd, "set i g %s\r", gateway);
-            if (!sendCommand(cmd, "AOK"))
-                continue;
-        }
-
-        //key step
-        if (state.sec != NONE) {
-            if (state.sec == WPA)
-                sprintf(cmd, "set w p %s\r", phrase);
-            else if (state.sec == WEP_128)
-                sprintf(cmd, "set w k %s\r", phrase);
-
-            if (!sendCommand(cmd, "AOK"))
-                continue;
-        }
-
-        //join the network (10s timeout)
-        if (state.dhcp) {
-            if (!sendCommand("join\r", "DHCP=ON", NULL, 10000))
-                continue;
-        } else {
-            if (!sendCommand("join\r", "Associated", NULL, 10000))
-                continue;
-        }
-
-        if (!sendCommand("save\r", "Stor"))
-            continue;
-
-        exit();
-
-        state.associated = true;
-        INFO("\r\nssid: %s\r\nphrase: %s\r\nsecurity: %s\r\n\r\n", this->ssid, this->phrase, getStringSecurity());
-        return true;
-    }
-    return false;
-}
-
-
-bool Wifly::setProtocol(Protocol p)
-{
-    // use udp auto pairing
-    char cmd[20];
-    sprintf(cmd, "set i p %d\r", p);
-    if (!sendCommand(cmd, "AOK"))
-        return false;
-
-    switch(p) {
-        case TCP:
-            // set ip flags: tcp retry enabled
-            if (!sendCommand("set i f 0x07\r", "AOK"))
-                return false;
-            break;
-        case UDP:
-            // set ip flags: udp auto pairing enabled
-            if (!sendCommand("set i h 0.0.0.0\r", "AOK"))
-                return false;
-            if (!sendCommand("set i f 0x40\r", "AOK"))
-                return false;
-            break;
-    }
-    state.proto = p;
-    return true;
-}
-
-char * Wifly::getStringSecurity()
-{
-    switch(state.sec) {
-        case NONE:
-            return "NONE";
-        case WEP_128:
-            return "WEP_128";
-        case WPA:
-            return "WPA";
-    }
-    return "UNKNOWN";
-}
-
-bool Wifly::connect(const char * host, int port)
-{
-    char rcv[20];
-    char cmd[20];
-
-    // try to open
-    sprintf(cmd, "open %s %d\r", host, port);
-    if (sendCommand(cmd, "OPEN", NULL, 10000)) {
-        state.tcp = true;
-        state.cmd_mode = false;
-        return true;
-    }
-
-    // if failed, retry and parse the response
-    if (sendCommand(cmd, NULL, rcv, 5000)) {
-        if (strstr(rcv, "OPEN") == NULL) {
-            if (strstr(rcv, "Connected") != NULL) {
-                wait(0.25);
-                if (!sendCommand("close\r", "CLOS"))
-                    return false;
-                wait(0.25);
-                if (!sendCommand(cmd, "OPEN", NULL, 10000))
-                    return false;
-            } else {
-                return false;
-            }
-        }
-    } else {
-        return false;
-    }
-
-    state.tcp = true;
-    state.cmd_mode = false;
-
-    return true;
-}
-
-
-bool Wifly::gethostbyname(const char * host, char * ip)
-{
-    string h = host;
-    char cmd[30], rcv[100];
-    int l = 0;
-    char * point;
-    int nb_digits = 0;
-
-    // no dns needed
-    int pos = h.find(".");
-    if (pos != string::npos) {
-        string sub = h.substr(0, h.find("."));
-        nb_digits = atoi(sub.c_str());
-    }
-    //printf("substrL %s\r\n", sub.c_str());
-    if (count(h.begin(), h.end(), '.') == 3 && nb_digits > 0) {
-        strcpy(ip, host);
-    }
-    // dns needed
-    else {
-        nb_digits = 0;
-        sprintf(cmd, "lookup %s\r", host);
-        if (!sendCommand(cmd, NULL, rcv))
-            return false;
-
-        // look for the ip address
-        char * begin = strstr(rcv, "=") + 1;
-        for (int i = 0; i < 3; i++) {
-            point = strstr(begin + l, ".");
-            DBG("str: %s", begin + l);
-            l += point - (begin + l) + 1;
-        }
-        DBG("str: %s", begin + l);
-        while(*(begin + l + nb_digits) >= '0' && *(begin + l + nb_digits) <= '9') {
-            DBG("digit: %c", *(begin + l + nb_digits));
-            nb_digits++;
-        }
-        memcpy(ip, begin, l + nb_digits);
-        ip[l+nb_digits] = 0;
-        DBG("ip from dns: %s", ip);
-    }
-    return true;
-}
-
-
-void Wifly::flush()
-{
-    buf_wifly.flush();
-}
-
-bool Wifly::sendCommand(const char * cmd, const char * ack, char * res, int timeout)
-{
-    if (!state.cmd_mode) {
-        cmdMode();
-    }
-    if (send(cmd, strlen(cmd), ack, res, timeout) == -1) {
-        ERR("sendCommand: cannot %s\r\n", cmd);
-        exit();
-        return false;
-    }
-    return true;
-}
-
-bool Wifly::cmdMode()
-{
-    // if already in cmd mode, return
-    if (state.cmd_mode)
-        return true;
-
-    if (send("$$$", 3, "CMD") == -1) {
-        ERR("cannot enter in cmd mode\r\n");
-        exit();
-        return false;
-    }
-    state.cmd_mode = true;
-    return true;
-}
-
-bool Wifly::disconnect()
-{
-    // if already disconnected, return
-    if (!state.associated)
-        return true;
-
-    if (!sendCommand("leave\r", "DeAuth"))
-        return false;
-    exit();
-
-    state.associated = false;
-    return true;
-
-}
-
-bool Wifly::is_connected()
-{
-    return (tcp_status.read() ==  1) ? true : false;
-}
-
-
-void Wifly::reset()
-{
-    reset_pin = 0;
-    wait(0.2);
-    reset_pin = 1;
-    wait(0.2);
-}
-
-bool Wifly::reboot()
-{
-    // if already in cmd mode, return
-    if (!sendCommand("reboot\r"))
-        return false;
-    
-    wait(0.3);
-
-    state.cmd_mode = false;
-    return true;
-}
-
-bool Wifly::close()
-{
-    // if not connected, return
-    if (!state.tcp)
-        return true;
-
-    wait(0.25);
-    if (!sendCommand("close\r", "CLOS"))
-        return false;
-    exit();
-
-    state.tcp = false;
-    return true;
-}
-
-
-int Wifly::putc(char c)
-{
-    while (!wifi.writeable());
-    return wifi.putc(c);
-}
-
-
-bool Wifly::exit()
-{
-    flush();
-    if (!state.cmd_mode)
-        return true;
-    if (!sendCommand("exit\r", "EXIT"))
-        return false;
-    state.cmd_mode = false;
-    flush();
-    return true;
-}
-
-
-int Wifly::readable()
-{
-    return buf_wifly.available();
-}
-
-int Wifly::writeable()
-{
-    return wifi.writeable();
-}
-
-char Wifly::getc()
-{
-    char c;
-    while (!buf_wifly.available());
-    buf_wifly.dequeue(&c);
-    return c;
-}
-
-void Wifly::handler_rx(void)
-{
-    //read characters
-    while (wifi.readable())
-        buf_wifly.queue(wifi.getc());
-}
-
-void Wifly::attach_rx(bool callback)
-{
-    if (!callback)
-        wifi.attach(NULL);
-    else
-        wifi.attach(this, &Wifly::handler_rx);
-}
-
-
-int Wifly::send(const char * str, int len, const char * ACK, char * res, int timeout)
-{
-    char read;
-    size_t found = string::npos;
-    string checking;
-    Timer tmr;
-    int result = 0;
-
-    DBG("will send: %s\r\n",str);
-
-    attach_rx(false);
-
-    //We flush the buffer
-    while (wifi.readable())
-        wifi.getc();
-
-    if (!ACK || !strcmp(ACK, "NO")) {
-        for (int i = 0; i < len; i++)
-            result = (putc(str[i]) == str[i]) ? result + 1 : result;
-    } else {
-        //We flush the buffer
-        while (wifi.readable())
-            wifi.getc();
-
-        tmr.start();
-        for (int i = 0; i < len; i++)
-            result = (putc(str[i]) == str[i]) ? result + 1 : result;
-
-        while (1) {
-            if (tmr.read_ms() > timeout) {
-                //We flush the buffer
-                while (wifi.readable())
-                    wifi.getc();
-
-                DBG("check: %s\r\n", checking.c_str());
-
-                attach_rx(true);
-                return -1;
-            } else if (wifi.readable()) {
-                read = wifi.getc();
-                if ( read != '\r' && read != '\n') {
-                    checking += read;
-                    found = checking.find(ACK);
-                    if (found != string::npos) {
-                        wait(0.01);
-
-                        //We flush the buffer
-                        while (wifi.readable())
-                            wifi.getc();
-
-                        break;
-                    }
-                }
-            }
-        }
-        DBG("check: %s\r\n", checking.c_str());
-
-        attach_rx(true);
-        return result;
-    }
-
-    //the user wants the result from the command (ACK == NULL, res != NULL)
-    if ( res != NULL) {
-        int i = 0;
-        Timer timeout;
-        timeout.start();
-        tmr.reset();
-        while (1) {
-            if (timeout.read() > 2) {
-                if (i == 0) {
-                    res = NULL;
-                    break;
-                }
-                res[i] = '\0';
-                DBG("user str 1: %s\r\n", res);
-
-                break;
-            } else {
-                if (tmr.read_ms() > 300) {
-                    res[i] = '\0';
-                    DBG("user str: %s\r\n", res);
-
-                    break;
-                }
-                if (wifi.readable()) {
-                    tmr.start();
-                    read = wifi.getc();
-
-                    // we drop \r and \n
-                    if ( read != '\r' && read != '\n') {
-                        res[i++] = read;
-                    }
-                }
-            }
-        }
-        DBG("user str: %s\r\n", res);
-    }
-
-    //We flush the buffer
-    while (wifi.readable())
-        wifi.getc();
-
-    attach_rx(true);
-    DBG("result: %d\r\n", result)
-    return result;
-}
\ No newline at end of file