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Improve Wifly Interface

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Wifly/Wifly.cpp@2:8e54830d0df7, 2012-11-24 (annotated)

Committer:
samux
Date:
Sat Nov 24 16:59:36 2012 +0000
Revision:
2:8e54830d0df7
Parent:
1:fb4494783863
Child:
3:9aa05e19c62e
set dns server name (now able to use "open host port")

Who changed what in which revision?

UserRevisionLine numberNew contents of line
samux 1:fb4494783863 1 /* Copyright (C) 2012 mbed.org, MIT License
samux 1:fb4494783863 2 *
samux 1:fb4494783863 3 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
samux 1:fb4494783863 4 * and associated documentation files (the "Software"), to deal in the Software without restriction,
samux 1:fb4494783863 5 * including without limitation the rights to use, copy, modify, merge, publish, distribute,
samux 1:fb4494783863 6 * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
samux 1:fb4494783863 7 * furnished to do so, subject to the following conditions:
samux 1:fb4494783863 8 *
samux 1:fb4494783863 9 * The above copyright notice and this permission notice shall be included in all copies or
samux 1:fb4494783863 10 * substantial portions of the Software.
samux 1:fb4494783863 11 *
samux 1:fb4494783863 12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
samux 1:fb4494783863 13 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
samux 1:fb4494783863 14 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
samux 1:fb4494783863 15 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
samux 1:fb4494783863 16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
samux 1:fb4494783863 17 */
samux 1:fb4494783863 18
samux 1:fb4494783863 19 #include "mbed.h"
samux 1:fb4494783863 20 #include "Wifly.h"
samux 1:fb4494783863 21 #include <string>
samux 1:fb4494783863 22 #include <algorithm>
samux 1:fb4494783863 23
samux 1:fb4494783863 24 //Debug is disabled by default
samux 2:8e54830d0df7 25 #if (0 && !defined(TARGET_LPC11U24))
samux 1:fb4494783863 26 #define DBG(x, ...) std::printf("[Wifly : DBG]"x"\r\n", ##__VA_ARGS__);
samux 1:fb4494783863 27 #define WARN(x, ...) std::printf("[Wifly : WARN]"x"\r\n", ##__VA_ARGS__);
samux 1:fb4494783863 28 #define ERR(x, ...) std::printf("[Wifly : ERR]"x"\r\n", ##__VA_ARGS__);
samux 1:fb4494783863 29 #else
samux 1:fb4494783863 30 #define DBG(x, ...)
samux 1:fb4494783863 31 #define WARN(x, ...)
samux 1:fb4494783863 32 #define ERR(x, ...)
samux 1:fb4494783863 33 #endif
samux 1:fb4494783863 34
samux 2:8e54830d0df7 35 #if !defined(TARGET_LPC11U24)
samux 1:fb4494783863 36 #define INFO(x, ...) printf("[Wifly : INFO]"x"\r\n", ##__VA_ARGS__);
samux 1:fb4494783863 37 #else
samux 1:fb4494783863 38 #define INFO(x, ...)
samux 1:fb4494783863 39 #endif
samux 1:fb4494783863 40
samux 1:fb4494783863 41 #define MAX_TRY_JOIN 3
samux 1:fb4494783863 42
samux 1:fb4494783863 43 Wifly * Wifly::inst;
samux 1:fb4494783863 44
samux 1:fb4494783863 45 Wifly::Wifly( PinName tx, PinName rx, PinName _reset, PinName tcp_status, const char * ssid, const char * phrase, Security sec):
samux 1:fb4494783863 46 wifi(tx, rx), reset_pin(_reset), tcp_status(tcp_status), buf_wifly(256)
samux 1:fb4494783863 47 {
samux 1:fb4494783863 48 memset(&state, 0, sizeof(state));
samux 1:fb4494783863 49 state.sec = sec;
samux 1:fb4494783863 50
samux 1:fb4494783863 51 // change all ' ' in '$' in the ssid and the passphrase
samux 1:fb4494783863 52 strcpy(this->ssid, ssid);
samux 1:fb4494783863 53 for (int i = 0; i < strlen(ssid); i++) {
samux 1:fb4494783863 54 if (this->ssid[i] == ' ')
samux 1:fb4494783863 55 this->ssid[i] = '$';
samux 1:fb4494783863 56 }
samux 1:fb4494783863 57 strcpy(this->phrase, phrase);
samux 1:fb4494783863 58 for (int i = 0; i < strlen(phrase); i++) {
samux 1:fb4494783863 59 if (this->phrase[i] == ' ')
samux 1:fb4494783863 60 this->phrase[i] = '$';
samux 1:fb4494783863 61 }
samux 1:fb4494783863 62
samux 1:fb4494783863 63 inst = this;
samux 1:fb4494783863 64 attach_rx(false);
samux 1:fb4494783863 65 state.cmd_mode = false;
samux 1:fb4494783863 66 }
samux 1:fb4494783863 67
samux 1:fb4494783863 68 bool Wifly::join()
samux 1:fb4494783863 69 {
samux 1:fb4494783863 70 char cmd[20];
samux 1:fb4494783863 71
samux 1:fb4494783863 72 for (int i= 0; i < MAX_TRY_JOIN; i++) {
samux 2:8e54830d0df7 73
samux 2:8e54830d0df7 74 // no auto join
samux 2:8e54830d0df7 75 if (!sendCommand("set w j 0\r", "AOK"))
samux 2:8e54830d0df7 76 continue;
samux 2:8e54830d0df7 77
samux 2:8e54830d0df7 78 //no echo
samux 2:8e54830d0df7 79 if (!sendCommand("set u m 1\r", "AOK"))
samux 2:8e54830d0df7 80 continue;
samux 2:8e54830d0df7 81
samux 1:fb4494783863 82 // set time
samux 1:fb4494783863 83 if (!sendCommand("set c t 20\r", "AOK"))
samux 1:fb4494783863 84 continue;
samux 1:fb4494783863 85
samux 1:fb4494783863 86 // set size
samux 1:fb4494783863 87 if (!sendCommand("set c s 128\r", "AOK"))
samux 1:fb4494783863 88 continue;
samux 1:fb4494783863 89
samux 1:fb4494783863 90 // red led on when tcp connection active
samux 1:fb4494783863 91 if (!sendCommand("set s i 0x40\r", "AOK"))
samux 1:fb4494783863 92 continue;
samux 1:fb4494783863 93
samux 1:fb4494783863 94 // no string sent to the tcp client
samux 1:fb4494783863 95 if (!sendCommand("set c r 0\r", "AOK"))
samux 1:fb4494783863 96 continue;
samux 1:fb4494783863 97
samux 1:fb4494783863 98 // tcp protocol
samux 1:fb4494783863 99 if (!sendCommand("set i p 2\r", "AOK"))
samux 1:fb4494783863 100 continue;
samux 1:fb4494783863 101
samux 1:fb4494783863 102 // tcp retry
samux 1:fb4494783863 103 if (!sendCommand("set i f 0x7\r", "AOK"))
samux 1:fb4494783863 104 continue;
samux 2:8e54830d0df7 105
samux 2:8e54830d0df7 106 // set dns server
samux 2:8e54830d0df7 107 if (!sendCommand("set d n rn.microchip.com\r", "AOK"))
samux 1:fb4494783863 108 continue;
samux 1:fb4494783863 109
samux 1:fb4494783863 110 //dhcp
samux 1:fb4494783863 111 sprintf(cmd, "set i d %d\r", (state.dhcp) ? 1 : 0);
samux 1:fb4494783863 112 if (!sendCommand(cmd, "AOK"))
samux 1:fb4494783863 113 continue;
samux 1:fb4494783863 114
samux 1:fb4494783863 115 // ssid
samux 1:fb4494783863 116 sprintf(cmd, "set w s %s\r", ssid);
samux 1:fb4494783863 117 if (!sendCommand(cmd, "AOK"))
samux 1:fb4494783863 118 continue;
samux 1:fb4494783863 119
samux 1:fb4494783863 120 //auth
samux 1:fb4494783863 121 sprintf(cmd, "set w a %d\r", state.sec);
samux 1:fb4494783863 122 if (!sendCommand(cmd, "AOK"))
samux 1:fb4494783863 123 continue;
samux 1:fb4494783863 124
samux 1:fb4494783863 125 // if no dhcp, set ip, netmask and gateway
samux 1:fb4494783863 126 if (!state.dhcp) {
samux 1:fb4494783863 127 DBG("not dhcp\r");
samux 1:fb4494783863 128
samux 1:fb4494783863 129 sprintf(cmd, "set i a %s\r\n", ip);
samux 1:fb4494783863 130 if (!sendCommand(cmd, "AOK"))
samux 1:fb4494783863 131 continue;
samux 1:fb4494783863 132
samux 1:fb4494783863 133 sprintf(cmd, "set i n %s\r", netmask);
samux 1:fb4494783863 134 if (!sendCommand(cmd, "AOK"))
samux 1:fb4494783863 135 continue;
samux 1:fb4494783863 136
samux 1:fb4494783863 137 sprintf(cmd, "set i g %s\r", gateway);
samux 1:fb4494783863 138 if (!sendCommand(cmd, "AOK"))
samux 1:fb4494783863 139 continue;
samux 1:fb4494783863 140 }
samux 1:fb4494783863 141
samux 1:fb4494783863 142 //key step
samux 1:fb4494783863 143 if (state.sec != NONE) {
samux 1:fb4494783863 144 if (state.sec == WPA)
samux 1:fb4494783863 145 sprintf(cmd, "set w p %s\r", phrase);
samux 1:fb4494783863 146 else if (state.sec == WEP_128)
samux 1:fb4494783863 147 sprintf(cmd, "set w k %s\r", phrase);
samux 1:fb4494783863 148
samux 1:fb4494783863 149 if (!sendCommand(cmd, "AOK"))
samux 1:fb4494783863 150 continue;
samux 1:fb4494783863 151 }
samux 1:fb4494783863 152
samux 2:8e54830d0df7 153 //join the network (10s timeout)
samux 1:fb4494783863 154 if (state.dhcp) {
samux 2:8e54830d0df7 155 if (!sendCommand("join\r", "DHCP=ON", NULL, 10000))
samux 2:8e54830d0df7 156 continue;
samux 2:8e54830d0df7 157 } else {
samux 2:8e54830d0df7 158 if (!sendCommand("join\r", "Associated", NULL, 10000))
samux 1:fb4494783863 159 continue;
samux 1:fb4494783863 160 }
samux 1:fb4494783863 161
samux 2:8e54830d0df7 162 if (!sendCommand("save\r", "Stor"))
samux 2:8e54830d0df7 163 continue;
samux 2:8e54830d0df7 164
samux 1:fb4494783863 165 exit();
samux 1:fb4494783863 166
samux 1:fb4494783863 167 state.associated = true;
samux 1:fb4494783863 168 INFO("\r\nssid: %s\r\nphrase: %s\r\nsecurity: %s\r\n\r\n", this->ssid, this->phrase, getStringSecurity());
samux 1:fb4494783863 169 return true;
samux 1:fb4494783863 170 }
samux 1:fb4494783863 171 return false;
samux 1:fb4494783863 172 }
samux 1:fb4494783863 173
samux 1:fb4494783863 174
samux 1:fb4494783863 175 bool Wifly::setProtocol(Protocol p)
samux 1:fb4494783863 176 {
samux 1:fb4494783863 177 // use udp auto pairing
samux 1:fb4494783863 178 char cmd[20];
samux 1:fb4494783863 179 sprintf(cmd, "set i p %d\r", p);
samux 1:fb4494783863 180 if (!sendCommand(cmd, "AOK"))
samux 1:fb4494783863 181 return false;
samux 1:fb4494783863 182
samux 1:fb4494783863 183 switch(p) {
samux 1:fb4494783863 184 case TCP:
samux 1:fb4494783863 185 // set ip flags: tcp retry enabled
samux 1:fb4494783863 186 if (!sendCommand("set i f 0x07\r", "AOK"))
samux 1:fb4494783863 187 return false;
samux 1:fb4494783863 188 break;
samux 1:fb4494783863 189 case UDP:
samux 1:fb4494783863 190 // set ip flags: udp auto pairing enabled
samux 1:fb4494783863 191 if (!sendCommand("set i f 0x40\r", "AOK"))
samux 1:fb4494783863 192 return false;
samux 1:fb4494783863 193 if (!sendCommand("set i h 0.0.0.0\r", "AOK"))
samux 1:fb4494783863 194 return false;
samux 1:fb4494783863 195 if (!sendCommand("set i r 0\r", "AOK"))
samux 1:fb4494783863 196 return false;
samux 1:fb4494783863 197 break;
samux 1:fb4494783863 198 }
samux 1:fb4494783863 199 state.proto = p;
samux 1:fb4494783863 200 return true;
samux 1:fb4494783863 201 }
samux 1:fb4494783863 202
samux 1:fb4494783863 203 char * Wifly::getStringSecurity()
samux 1:fb4494783863 204 {
samux 1:fb4494783863 205 switch(state.sec) {
samux 1:fb4494783863 206 case NONE:
samux 1:fb4494783863 207 return "NONE";
samux 1:fb4494783863 208 case WEP_128:
samux 1:fb4494783863 209 return "WEP_128";
samux 1:fb4494783863 210 case WPA:
samux 1:fb4494783863 211 return "WPA";
samux 1:fb4494783863 212 }
samux 1:fb4494783863 213 return "UNKNOWN";
samux 1:fb4494783863 214 }
samux 1:fb4494783863 215
samux 1:fb4494783863 216 bool Wifly::connect(const char * host, int port)
samux 1:fb4494783863 217 {
samux 1:fb4494783863 218 char rcv[20];
samux 1:fb4494783863 219 char cmd[20];
samux 1:fb4494783863 220
samux 2:8e54830d0df7 221 // try to open
samux 2:8e54830d0df7 222 sprintf(cmd, "open %s %d\r", host, port);
samux 2:8e54830d0df7 223 if (sendCommand(cmd, "OPEN", NULL, 10000)) {
samux 2:8e54830d0df7 224 state.tcp = true;
samux 2:8e54830d0df7 225 state.cmd_mode = false;
samux 2:8e54830d0df7 226 return true;
samux 1:fb4494783863 227 }
samux 1:fb4494783863 228
samux 2:8e54830d0df7 229 // if failed, retry and parse the response
samux 2:8e54830d0df7 230 if (sendCommand(cmd, NULL, rcv, 5000)) {
samux 1:fb4494783863 231 if (strstr(rcv, "OPEN") == NULL) {
samux 1:fb4494783863 232 if (strstr(rcv, "Connected") != NULL) {
samux 2:8e54830d0df7 233 wait(0.25);
samux 1:fb4494783863 234 if (!sendCommand("close\r", "CLOS"))
samux 1:fb4494783863 235 return false;
samux 2:8e54830d0df7 236 wait(0.25);
samux 2:8e54830d0df7 237 if (!sendCommand(cmd, "OPEN", NULL, 10000))
samux 1:fb4494783863 238 return false;
samux 1:fb4494783863 239 } else {
samux 1:fb4494783863 240 return false;
samux 1:fb4494783863 241 }
samux 1:fb4494783863 242 }
samux 1:fb4494783863 243 } else {
samux 1:fb4494783863 244 return false;
samux 1:fb4494783863 245 }
samux 2:8e54830d0df7 246
samux 1:fb4494783863 247 state.tcp = true;
samux 1:fb4494783863 248 state.cmd_mode = false;
samux 1:fb4494783863 249
samux 1:fb4494783863 250 return true;
samux 1:fb4494783863 251 }
samux 1:fb4494783863 252
samux 1:fb4494783863 253
samux 1:fb4494783863 254 bool Wifly::gethostbyname(const char * host, char * ip)
samux 1:fb4494783863 255 {
samux 1:fb4494783863 256 string h = host;
samux 1:fb4494783863 257 char cmd[30], rcv[100];
samux 1:fb4494783863 258 int l = 0;
samux 1:fb4494783863 259 char * point;
samux 1:fb4494783863 260 int nb_digits = 0;
samux 1:fb4494783863 261
samux 1:fb4494783863 262 // no dns needed
samux 1:fb4494783863 263 int pos = h.find(".");
samux 1:fb4494783863 264 if (pos != string::npos) {
samux 1:fb4494783863 265 string sub = h.substr(0, h.find("."));
samux 1:fb4494783863 266 nb_digits = atoi(sub.c_str());
samux 1:fb4494783863 267 }
samux 1:fb4494783863 268 //printf("substrL %s\r\n", sub.c_str());
samux 1:fb4494783863 269 if (count(h.begin(), h.end(), '.') == 3 && nb_digits > 0) {
samux 1:fb4494783863 270 strcpy(ip, host);
samux 1:fb4494783863 271 }
samux 1:fb4494783863 272 // dns needed
samux 1:fb4494783863 273 else {
samux 1:fb4494783863 274 nb_digits = 0;
samux 1:fb4494783863 275 sprintf(cmd, "lookup %s\r", host);
samux 1:fb4494783863 276 if (!sendCommand(cmd, NULL, rcv))
samux 1:fb4494783863 277 return false;
samux 1:fb4494783863 278
samux 1:fb4494783863 279 // look for the ip address
samux 1:fb4494783863 280 char * begin = strstr(rcv, "=") + 1;
samux 1:fb4494783863 281 for (int i = 0; i < 3; i++) {
samux 1:fb4494783863 282 point = strstr(begin + l, ".");
samux 1:fb4494783863 283 DBG("str: %s", begin + l);
samux 1:fb4494783863 284 l += point - (begin + l) + 1;
samux 1:fb4494783863 285 }
samux 1:fb4494783863 286 DBG("str: %s", begin + l);
samux 1:fb4494783863 287 while(*(begin + l + nb_digits) >= '0' && *(begin + l + nb_digits) <= '9') {
samux 1:fb4494783863 288 DBG("digit: %c", *(begin + l + nb_digits));
samux 1:fb4494783863 289 nb_digits++;
samux 1:fb4494783863 290 }
samux 1:fb4494783863 291 memcpy(ip, begin, l + nb_digits);
samux 1:fb4494783863 292 ip[l+nb_digits] = 0;
samux 1:fb4494783863 293 DBG("ip from dns: %s", ip);
samux 1:fb4494783863 294 }
samux 1:fb4494783863 295 return true;
samux 1:fb4494783863 296 }
samux 1:fb4494783863 297
samux 1:fb4494783863 298
samux 1:fb4494783863 299 void Wifly::flush()
samux 1:fb4494783863 300 {
samux 1:fb4494783863 301 buf_wifly.flush();
samux 1:fb4494783863 302 }
samux 1:fb4494783863 303
samux 1:fb4494783863 304 bool Wifly::sendCommand(const char * cmd, const char * ack, char * res, int timeout)
samux 1:fb4494783863 305 {
samux 1:fb4494783863 306 if (!state.cmd_mode) {
samux 1:fb4494783863 307 cmdMode();
samux 1:fb4494783863 308 }
samux 1:fb4494783863 309 if (send(cmd, strlen(cmd), ack, res, timeout) == -1) {
samux 1:fb4494783863 310 ERR("sendCommand: cannot %s\r\n", cmd);
samux 1:fb4494783863 311 exit();
samux 1:fb4494783863 312 return false;
samux 1:fb4494783863 313 }
samux 1:fb4494783863 314 return true;
samux 1:fb4494783863 315 }
samux 1:fb4494783863 316
samux 1:fb4494783863 317 bool Wifly::cmdMode()
samux 1:fb4494783863 318 {
samux 1:fb4494783863 319 // if already in cmd mode, return
samux 1:fb4494783863 320 if (state.cmd_mode)
samux 1:fb4494783863 321 return true;
samux 2:8e54830d0df7 322
samux 1:fb4494783863 323 if (send("$$$", 3, "CMD") == -1) {
samux 1:fb4494783863 324 ERR("cannot enter in cmd mode\r\n");
samux 2:8e54830d0df7 325 exit();
samux 1:fb4494783863 326 return false;
samux 1:fb4494783863 327 }
samux 1:fb4494783863 328 state.cmd_mode = true;
samux 1:fb4494783863 329 return true;
samux 1:fb4494783863 330 }
samux 1:fb4494783863 331
samux 1:fb4494783863 332 bool Wifly::disconnect()
samux 1:fb4494783863 333 {
samux 1:fb4494783863 334 // if already disconnected, return
samux 1:fb4494783863 335 if (!state.associated)
samux 1:fb4494783863 336 return true;
samux 2:8e54830d0df7 337
samux 1:fb4494783863 338 if (!sendCommand("leave\r", "DeAuth"))
samux 1:fb4494783863 339 return false;
samux 1:fb4494783863 340 exit();
samux 2:8e54830d0df7 341
samux 1:fb4494783863 342 state.associated = false;
samux 1:fb4494783863 343 return true;
samux 1:fb4494783863 344
samux 1:fb4494783863 345 }
samux 1:fb4494783863 346
samux 1:fb4494783863 347 bool Wifly::is_connected()
samux 1:fb4494783863 348 {
samux 1:fb4494783863 349 return (tcp_status.read() == 1) ? true : false;
samux 1:fb4494783863 350 }
samux 1:fb4494783863 351
samux 1:fb4494783863 352
samux 1:fb4494783863 353 void Wifly::reset()
samux 1:fb4494783863 354 {
samux 1:fb4494783863 355 reset_pin = 0;
samux 1:fb4494783863 356 wait(0.2);
samux 1:fb4494783863 357 reset_pin = 1;
samux 1:fb4494783863 358 wait(0.2);
samux 1:fb4494783863 359 }
samux 1:fb4494783863 360
samux 1:fb4494783863 361 bool Wifly::close()
samux 1:fb4494783863 362 {
samux 1:fb4494783863 363 // if not connected, return
samux 1:fb4494783863 364 if (!state.tcp)
samux 1:fb4494783863 365 return true;
samux 2:8e54830d0df7 366
samux 1:fb4494783863 367 wait(0.25);
samux 1:fb4494783863 368 if (!sendCommand("close\r", "CLOS"))
samux 1:fb4494783863 369 return false;
samux 1:fb4494783863 370 exit();
samux 2:8e54830d0df7 371
samux 1:fb4494783863 372 state.tcp = false;
samux 1:fb4494783863 373 return true;
samux 1:fb4494783863 374 }
samux 1:fb4494783863 375
samux 1:fb4494783863 376
samux 1:fb4494783863 377 int Wifly::putc(char c)
samux 1:fb4494783863 378 {
samux 1:fb4494783863 379 while (!wifi.writeable());
samux 1:fb4494783863 380 return wifi.putc(c);
samux 1:fb4494783863 381 }
samux 1:fb4494783863 382
samux 1:fb4494783863 383
samux 1:fb4494783863 384 bool Wifly::exit()
samux 1:fb4494783863 385 {
samux 1:fb4494783863 386 flush();
samux 1:fb4494783863 387 if (!state.cmd_mode)
samux 1:fb4494783863 388 return true;
samux 1:fb4494783863 389 if (!sendCommand("exit\r", "EXIT"))
samux 1:fb4494783863 390 return false;
samux 1:fb4494783863 391 state.cmd_mode = false;
samux 1:fb4494783863 392 flush();
samux 1:fb4494783863 393 return true;
samux 1:fb4494783863 394 }
samux 1:fb4494783863 395
samux 1:fb4494783863 396
samux 1:fb4494783863 397 int Wifly::readable()
samux 1:fb4494783863 398 {
samux 1:fb4494783863 399 return buf_wifly.available();
samux 1:fb4494783863 400 }
samux 1:fb4494783863 401
samux 1:fb4494783863 402 int Wifly::writeable()
samux 1:fb4494783863 403 {
samux 1:fb4494783863 404 return wifi.writeable();
samux 1:fb4494783863 405 }
samux 1:fb4494783863 406
samux 1:fb4494783863 407 char Wifly::getc()
samux 1:fb4494783863 408 {
samux 1:fb4494783863 409 char c;
samux 1:fb4494783863 410 while (!buf_wifly.available());
samux 1:fb4494783863 411 buf_wifly.dequeue(&c);
samux 1:fb4494783863 412 return c;
samux 1:fb4494783863 413 }
samux 1:fb4494783863 414
samux 1:fb4494783863 415 void Wifly::handler_rx(void)
samux 1:fb4494783863 416 {
samux 1:fb4494783863 417 //read characters
samux 1:fb4494783863 418 while (wifi.readable())
samux 1:fb4494783863 419 buf_wifly.queue(wifi.getc());
samux 1:fb4494783863 420 }
samux 1:fb4494783863 421
samux 1:fb4494783863 422 void Wifly::attach_rx(bool callback)
samux 1:fb4494783863 423 {
samux 1:fb4494783863 424 if (!callback)
samux 1:fb4494783863 425 wifi.attach(NULL);
samux 1:fb4494783863 426 else
samux 1:fb4494783863 427 wifi.attach(this, &Wifly::handler_rx);
samux 1:fb4494783863 428 }
samux 1:fb4494783863 429
samux 1:fb4494783863 430
samux 1:fb4494783863 431 int Wifly::send(const char * str, int len, const char * ACK, char * res, int timeout)
samux 1:fb4494783863 432 {
samux 1:fb4494783863 433 char read;
samux 1:fb4494783863 434 size_t found = string::npos;
samux 1:fb4494783863 435 string checking;
samux 1:fb4494783863 436 Timer tmr;
samux 1:fb4494783863 437 int result = 0;
samux 1:fb4494783863 438
samux 1:fb4494783863 439 DBG("will send: %s\r\n",str);
samux 1:fb4494783863 440
samux 1:fb4494783863 441 attach_rx(false);
samux 1:fb4494783863 442
samux 1:fb4494783863 443 //We flush the buffer
samux 1:fb4494783863 444 while (wifi.readable())
samux 1:fb4494783863 445 wifi.getc();
samux 1:fb4494783863 446
samux 1:fb4494783863 447 if (!ACK || !strcmp(ACK, "NO")) {
samux 1:fb4494783863 448 for (int i = 0; i < len; i++)
samux 1:fb4494783863 449 result = (putc(str[i]) == str[i]) ? result + 1 : result;
samux 1:fb4494783863 450 } else {
samux 1:fb4494783863 451 //We flush the buffer
samux 1:fb4494783863 452 while (wifi.readable())
samux 1:fb4494783863 453 wifi.getc();
samux 1:fb4494783863 454
samux 1:fb4494783863 455 tmr.start();
samux 1:fb4494783863 456 for (int i = 0; i < len; i++)
samux 1:fb4494783863 457 result = (putc(str[i]) == str[i]) ? result + 1 : result;
samux 1:fb4494783863 458
samux 1:fb4494783863 459 while (1) {
samux 1:fb4494783863 460 if (tmr.read_ms() > timeout) {
samux 1:fb4494783863 461 //We flush the buffer
samux 1:fb4494783863 462 while (wifi.readable())
samux 1:fb4494783863 463 wifi.getc();
samux 1:fb4494783863 464
samux 1:fb4494783863 465 DBG("check: %s\r\n", checking.c_str());
samux 1:fb4494783863 466
samux 1:fb4494783863 467 attach_rx(true);
samux 1:fb4494783863 468 return -1;
samux 1:fb4494783863 469 } else if (wifi.readable()) {
samux 1:fb4494783863 470 read = wifi.getc();
samux 1:fb4494783863 471 if ( read != '\r' && read != '\n') {
samux 1:fb4494783863 472 checking += read;
samux 1:fb4494783863 473 found = checking.find(ACK);
samux 1:fb4494783863 474 if (found != string::npos) {
samux 1:fb4494783863 475 wait(0.01);
samux 1:fb4494783863 476
samux 1:fb4494783863 477 //We flush the buffer
samux 1:fb4494783863 478 while (wifi.readable())
samux 1:fb4494783863 479 wifi.getc();
samux 1:fb4494783863 480
samux 1:fb4494783863 481 break;
samux 1:fb4494783863 482 }
samux 1:fb4494783863 483 }
samux 1:fb4494783863 484 }
samux 1:fb4494783863 485 }
samux 1:fb4494783863 486 DBG("check: %s\r\n", checking.c_str());
samux 1:fb4494783863 487
samux 1:fb4494783863 488 attach_rx(true);
samux 1:fb4494783863 489 return result;
samux 1:fb4494783863 490 }
samux 1:fb4494783863 491
samux 1:fb4494783863 492 //the user wants the result from the command (ACK == NULL, res != NULL)
samux 1:fb4494783863 493 if ( res != NULL) {
samux 1:fb4494783863 494 int i = 0;
samux 1:fb4494783863 495 Timer timeout;
samux 1:fb4494783863 496 timeout.start();
samux 1:fb4494783863 497 tmr.reset();
samux 1:fb4494783863 498 while (1) {
samux 1:fb4494783863 499 if (timeout.read() > 2) {
samux 1:fb4494783863 500 if (i == 0) {
samux 1:fb4494783863 501 res = NULL;
samux 1:fb4494783863 502 break;
samux 1:fb4494783863 503 }
samux 1:fb4494783863 504 res[i] = '\0';
samux 1:fb4494783863 505 DBG("user str 1: %s\r\n", res);
samux 1:fb4494783863 506
samux 1:fb4494783863 507 break;
samux 1:fb4494783863 508 } else {
samux 1:fb4494783863 509 if (tmr.read_ms() > 300) {
samux 1:fb4494783863 510 res[i] = '\0';
samux 1:fb4494783863 511 DBG("user str: %s\r\n", res);
samux 1:fb4494783863 512
samux 1:fb4494783863 513 break;
samux 1:fb4494783863 514 }
samux 1:fb4494783863 515 if (wifi.readable()) {
samux 1:fb4494783863 516 tmr.start();
samux 1:fb4494783863 517 read = wifi.getc();
samux 1:fb4494783863 518
samux 1:fb4494783863 519 // we drop \r and \n
samux 1:fb4494783863 520 if ( read != '\r' && read != '\n') {
samux 1:fb4494783863 521 res[i++] = read;
samux 1:fb4494783863 522 }
samux 1:fb4494783863 523 }
samux 1:fb4494783863 524 }
samux 1:fb4494783863 525 }
samux 1:fb4494783863 526 DBG("user str: %s\r\n", res);
samux 1:fb4494783863 527 }
samux 1:fb4494783863 528
samux 1:fb4494783863 529 //We flush the buffer
samux 1:fb4494783863 530 while (wifi.readable())
samux 1:fb4494783863 531 wifi.getc();
samux 1:fb4494783863 532
samux 1:fb4494783863 533 attach_rx(true);
samux 1:fb4494783863 534 DBG("result: %d\r\n", result)
samux 1:fb4494783863 535 return result;
samux 1:fb4494783863 536 }