fernan robin / Projet-matthieu

wifly/socket interface for wifly modules

Dependents:   PROJET_MATTHIEU_2019 PROJET_MATTHIEU_2019

Wifly/Wifly.cpp@6:f281180726e8, 2012-08-23 (annotated)

Committer:
samux
Date:
Thu Aug 23 11:49:33 2012 +0000
Revision:
6:f281180726e8
Parent:
5:8e253731f76f
Child:
7:a92dbed32890
handle timeout == 0

Who changed what in which revision?

UserRevisionLine numberNew contents of line
samux 6:f281180726e8 1 /* Copyright (C) 2012 mbed.org, MIT License
samux 6:f281180726e8 2 *
samux 6:f281180726e8 3 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
samux 6:f281180726e8 4 * and associated documentation files (the "Software"), to deal in the Software without restriction,
samux 6:f281180726e8 5 * including without limitation the rights to use, copy, modify, merge, publish, distribute,
samux 6:f281180726e8 6 * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
samux 6:f281180726e8 7 * furnished to do so, subject to the following conditions:
samux 6:f281180726e8 8 *
samux 6:f281180726e8 9 * The above copyright notice and this permission notice shall be included in all copies or
samux 6:f281180726e8 10 * substantial portions of the Software.
samux 6:f281180726e8 11 *
samux 6:f281180726e8 12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
samux 6:f281180726e8 13 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
samux 6:f281180726e8 14 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
samux 6:f281180726e8 15 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
samux 6:f281180726e8 16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
samux 6:f281180726e8 17 */
samux 6:f281180726e8 18
samux 6:f281180726e8 19 #include "mbed.h"
samux 6:f281180726e8 20 #include "Wifly.h"
samux 6:f281180726e8 21 #include <string>
samux 6:f281180726e8 22 #include <algorithm>
samux 6:f281180726e8 23
samux 6:f281180726e8 24 //Debug is disabled by default
samux 6:f281180726e8 25 #if 0
samux 6:f281180726e8 26 #define DBG(x, ...) std::printf("[Wifly : DBG]"x"\r\n", ##__VA_ARGS__);
samux 6:f281180726e8 27 #define WARN(x, ...) std::printf("[Wifly : WARN]"x"\r\n", ##__VA_ARGS__);
samux 6:f281180726e8 28 #define ERR(x, ...) std::printf("[Wifly : ERR]"x"\r\n", ##__VA_ARGS__);
samux 6:f281180726e8 29 #else
samux 6:f281180726e8 30 #define DBG(x, ...)
samux 6:f281180726e8 31 #define WARN(x, ...)
samux 6:f281180726e8 32 #define ERR(x, ...)
samux 6:f281180726e8 33 #endif
samux 6:f281180726e8 34
samux 6:f281180726e8 35 #define INFO(x, ...) printf("[Wifly : INFO]"x"\r\n", ##__VA_ARGS__);
samux 6:f281180726e8 36
samux 6:f281180726e8 37 #define MAX_TRY_JOIN 3
samux 6:f281180726e8 38
samux 6:f281180726e8 39 Wifly * Wifly::inst;
samux 6:f281180726e8 40
samux 6:f281180726e8 41 Wifly::Wifly( PinName tx, PinName rx, PinName _reset, PinName tcp_status, const char * ssid, const char * phrase, bool wpa):
samux 6:f281180726e8 42 wifi(tx, rx), reset_pin(_reset), tcp_status(tcp_status), buf_wifly(512)
samux 6:f281180726e8 43 {
samux 6:f281180726e8 44 this->wpa = wpa;
samux 6:f281180726e8 45
samux 6:f281180726e8 46 // change all ' ' in '$' in the ssid and the passphrase
samux 6:f281180726e8 47 strcpy(this->ssid, ssid);
samux 6:f281180726e8 48 for (int i = 0; i < strlen(ssid); i++) {
samux 6:f281180726e8 49 if (this->ssid[i] == ' ')
samux 6:f281180726e8 50 this->ssid[i] = '$';
samux 6:f281180726e8 51 }
samux 6:f281180726e8 52 strcpy(this->phrase, phrase);
samux 6:f281180726e8 53 for (int i = 0; i < strlen(phrase); i++) {
samux 6:f281180726e8 54 if (this->phrase[i] == ' ')
samux 6:f281180726e8 55 this->phrase[i] = '$';
samux 6:f281180726e8 56 }
samux 6:f281180726e8 57
samux 6:f281180726e8 58 inst = this;
samux 6:f281180726e8 59 attach_rx(false);
samux 6:f281180726e8 60 cmd_mode = false;
samux 6:f281180726e8 61 }
samux 6:f281180726e8 62
samux 6:f281180726e8 63 bool Wifly::join()
samux 6:f281180726e8 64 {
samux 6:f281180726e8 65 char cmd[100];
samux 6:f281180726e8 66
samux 6:f281180726e8 67 for (int i= 0; i < MAX_TRY_JOIN; i++) {
samux 6:f281180726e8 68 if (!sendCommand("set comm time 20\r", "AOK"))
samux 6:f281180726e8 69 continue;
samux 6:f281180726e8 70
samux 6:f281180726e8 71 if (!sendCommand("set comm size 128\r", "AOK"))
samux 6:f281180726e8 72 continue;
samux 6:f281180726e8 73
samux 6:f281180726e8 74 if (!sendCommand("set sys iofunc 0x40\r", "AOK"))
samux 6:f281180726e8 75 continue;
samux 6:f281180726e8 76
samux 6:f281180726e8 77 // no string sent to the tcp client
samux 6:f281180726e8 78 if (!sendCommand("set comm remote 0\r", "AOK"))
samux 6:f281180726e8 79 continue;
samux 6:f281180726e8 80
samux 6:f281180726e8 81 // tcp protocol
samux 6:f281180726e8 82 if (!sendCommand("set ip proto 2\r", "AOK"))
samux 6:f281180726e8 83 continue;
samux 6:f281180726e8 84
samux 6:f281180726e8 85 // tcp retry
samux 6:f281180726e8 86 if (!sendCommand("set ip flags 0x7\r", "AOK"))
samux 6:f281180726e8 87 continue;
samux 6:f281180726e8 88
samux 6:f281180726e8 89 //no echo
samux 6:f281180726e8 90 if (!sendCommand("set u m 1\r", "AOK"))
samux 6:f281180726e8 91 continue;
samux 6:f281180726e8 92
samux 6:f281180726e8 93 // no auto join
samux 6:f281180726e8 94 if (!sendCommand("set w j 0\r", "AOK"))
samux 6:f281180726e8 95 continue;
samux 6:f281180726e8 96
samux 6:f281180726e8 97 //dhcp
samux 6:f281180726e8 98 sprintf(cmd, "set i d %d\r", (dhcp) ? 1 : 0);
samux 6:f281180726e8 99 if (!sendCommand(cmd, "AOK"))
samux 6:f281180726e8 100 continue;
samux 6:f281180726e8 101
samux 6:f281180726e8 102 // ssid
samux 6:f281180726e8 103 sprintf(cmd, "set w s %s\r", ssid);
samux 6:f281180726e8 104 if (!sendCommand(cmd, "AOK"))
samux 6:f281180726e8 105 continue;
samux 6:f281180726e8 106
samux 6:f281180726e8 107 //auth
samux 6:f281180726e8 108 sprintf(cmd, "set w a %d\r", (wpa) ? 3 : 1);
samux 6:f281180726e8 109 if (!sendCommand(cmd, "AOK"))
samux 6:f281180726e8 110 continue;
samux 6:f281180726e8 111
samux 6:f281180726e8 112 // if no dhcp, set ip, netmask and gateway
samux 6:f281180726e8 113 if (!dhcp) {
samux 6:f281180726e8 114 DBG("not dhcp\r");
samux 6:f281180726e8 115
samux 6:f281180726e8 116 sprintf(cmd, "set i a %s\r\n", ip);
samux 6:f281180726e8 117 if (!sendCommand(cmd, "AOK"))
samux 6:f281180726e8 118 continue;
samux 6:f281180726e8 119
samux 6:f281180726e8 120 sprintf(cmd, "set i n %s\r", netmask);
samux 6:f281180726e8 121 if (!sendCommand(cmd, "AOK"))
samux 6:f281180726e8 122 continue;
samux 6:f281180726e8 123
samux 6:f281180726e8 124 sprintf(cmd, "set i g %s\r", gateway);
samux 6:f281180726e8 125 if (!sendCommand(cmd, "AOK"))
samux 6:f281180726e8 126 continue;
samux 6:f281180726e8 127 }
samux 6:f281180726e8 128
samux 6:f281180726e8 129 //key step
samux 6:f281180726e8 130 if (wpa)
samux 6:f281180726e8 131 sprintf(cmd, "set w p %s\r", phrase);
samux 6:f281180726e8 132 else
samux 6:f281180726e8 133 sprintf(cmd, "set w k %s\r", phrase);
samux 6:f281180726e8 134
samux 6:f281180726e8 135 if (!sendCommand(cmd, "AOK"))
samux 6:f281180726e8 136 continue;
samux 6:f281180726e8 137
samux 6:f281180726e8 138 // save
samux 6:f281180726e8 139 if (!sendCommand("save\r", "Stor"))
samux 6:f281180726e8 140 return false;
samux 6:f281180726e8 141
samux 6:f281180726e8 142 //join the network
samux 6:f281180726e8 143 sprintf(cmd, "join\r");
samux 6:f281180726e8 144 if (!sendCommand(cmd, "Associated", NULL, 3000))
samux 6:f281180726e8 145 continue;
samux 6:f281180726e8 146
samux 6:f281180726e8 147 if (dhcp) {
samux 6:f281180726e8 148 if (!sendCommand("", "DHCP=ON", NULL, 3000))
samux 6:f281180726e8 149 continue;
samux 6:f281180726e8 150 }
samux 6:f281180726e8 151
samux 6:f281180726e8 152 exit();
samux 6:f281180726e8 153
samux 6:f281180726e8 154 INFO("\r\nssid: %s\r\nphrase: %s\r\nsecurity: %s\r\n\r\n", this->ssid, this->phrase, (wpa) ? "WPA" : "WEP");
samux 6:f281180726e8 155 return true;
samux 6:f281180726e8 156 }
samux 6:f281180726e8 157 return false;
samux 6:f281180726e8 158 }
samux 6:f281180726e8 159
samux 6:f281180726e8 160
samux 6:f281180726e8 161 bool Wifly::dnsLookup(const char * host, char * ip)
samux 6:f281180726e8 162 {
samux 6:f281180726e8 163 string h = host;
samux 6:f281180726e8 164 char cmd[30], rcv[100];
samux 6:f281180726e8 165 int l = 0;
samux 6:f281180726e8 166 char * point;
samux 6:f281180726e8 167 int nb_digits = 0;
samux 6:f281180726e8 168
samux 6:f281180726e8 169 // no dns needed
samux 6:f281180726e8 170 int pos = h.find(".");
samux 6:f281180726e8 171 if (pos != string::npos) {
samux 6:f281180726e8 172 string sub = h.substr(0, h.find("."));
samux 6:f281180726e8 173 nb_digits = atoi(sub.c_str());
samux 6:f281180726e8 174 }
samux 6:f281180726e8 175 //printf("substrL %s\r\n", sub.c_str());
samux 6:f281180726e8 176 if (count(h.begin(), h.end(), '.') == 3 && nb_digits > 0) {
samux 6:f281180726e8 177 strcpy(ip, host);
samux 6:f281180726e8 178 }
samux 6:f281180726e8 179 // dns needed
samux 6:f281180726e8 180 else {
samux 6:f281180726e8 181 nb_digits = 0;
samux 6:f281180726e8 182 sprintf(cmd, "lookup %s\r", host);
samux 6:f281180726e8 183 if (!sendCommand(cmd, NULL, rcv))
samux 6:f281180726e8 184 return false;
samux 6:f281180726e8 185
samux 6:f281180726e8 186 // look for the ip address
samux 6:f281180726e8 187 char * begin = strstr(rcv, "=") + 1;
samux 6:f281180726e8 188 for (int i = 0; i < 3; i++) {
samux 6:f281180726e8 189 point = strstr(begin + l, ".");
samux 6:f281180726e8 190 DBG("str: %s", begin + l);
samux 6:f281180726e8 191 l += point - (begin + l) + 1;
samux 6:f281180726e8 192 }
samux 6:f281180726e8 193 DBG("str: %s", begin + l);
samux 6:f281180726e8 194 while(*(begin + l + nb_digits) >= '0' && *(begin + l + nb_digits) <= '9') {
samux 6:f281180726e8 195 DBG("digit: %c", *(begin + l + nb_digits));
samux 6:f281180726e8 196 nb_digits++;
samux 6:f281180726e8 197 }
samux 6:f281180726e8 198 memcpy(ip, begin, l + nb_digits);
samux 6:f281180726e8 199 ip[l+nb_digits] = 0;
samux 6:f281180726e8 200 DBG("ip from dns: %s", ip);
samux 6:f281180726e8 201 }
samux 6:f281180726e8 202 return true;
samux 6:f281180726e8 203 }
samux 6:f281180726e8 204
samux 6:f281180726e8 205
samux 6:f281180726e8 206 void Wifly::flush()
samux 6:f281180726e8 207 {
samux 6:f281180726e8 208 buf_wifly.flush();
samux 6:f281180726e8 209 }
samux 6:f281180726e8 210
samux 6:f281180726e8 211 bool Wifly::sendCommand(const char * cmd, const char * ack, char * res, int timeout)
samux 6:f281180726e8 212 {
samux 6:f281180726e8 213 if (!cmd_mode) {
samux 6:f281180726e8 214 cmdMode();
samux 6:f281180726e8 215 }
samux 6:f281180726e8 216 if (send(cmd, strlen(cmd), ack, res, timeout) == -1) {
samux 6:f281180726e8 217 ERR("sendCommand: cannot %s\r\n", cmd);
samux 6:f281180726e8 218 exit();
samux 6:f281180726e8 219 return false;
samux 6:f281180726e8 220 }
samux 6:f281180726e8 221 return true;
samux 6:f281180726e8 222 }
samux 6:f281180726e8 223
samux 6:f281180726e8 224 bool Wifly::cmdMode()
samux 6:f281180726e8 225 {
samux 6:f281180726e8 226 if (send("$$$", 3, "CMD") == -1) {
samux 6:f281180726e8 227 ERR("cannot enter in cmd mode\r\n");
samux 6:f281180726e8 228 return false;
samux 6:f281180726e8 229 }
samux 6:f281180726e8 230 cmd_mode = true;
samux 6:f281180726e8 231 return true;
samux 6:f281180726e8 232 }
samux 6:f281180726e8 233
samux 6:f281180726e8 234 bool Wifly::leave()
samux 6:f281180726e8 235 {
samux 6:f281180726e8 236 if (!sendCommand("leave\r", "DeAuth"))
samux 6:f281180726e8 237 return false;
samux 6:f281180726e8 238 exit();
samux 6:f281180726e8 239 return true;
samux 6:f281180726e8 240
samux 6:f281180726e8 241 }
samux 6:f281180726e8 242
samux 6:f281180726e8 243 bool Wifly::is_connected()
samux 6:f281180726e8 244 {
samux 6:f281180726e8 245 return (tcp_status.read() == 1) ? true : false;
samux 6:f281180726e8 246 }
samux 6:f281180726e8 247
samux 6:f281180726e8 248
samux 6:f281180726e8 249 void Wifly::reset()
samux 6:f281180726e8 250 {
samux 6:f281180726e8 251 reset_pin = 0;
samux 6:f281180726e8 252 wait(0.2);
samux 6:f281180726e8 253 reset_pin = 1;
samux 6:f281180726e8 254 wait(0.2);
samux 6:f281180726e8 255 }
samux 6:f281180726e8 256
samux 6:f281180726e8 257 bool Wifly::close()
samux 6:f281180726e8 258 {
samux 6:f281180726e8 259 wait(0.25);
samux 6:f281180726e8 260 if (!cmdMode())
samux 6:f281180726e8 261 return false;
samux 6:f281180726e8 262 if (send("close\r", 6, "CLOS") == -1)
samux 6:f281180726e8 263 return false;
samux 6:f281180726e8 264 exit();
samux 6:f281180726e8 265 return true;
samux 6:f281180726e8 266 }
samux 6:f281180726e8 267
samux 6:f281180726e8 268
samux 6:f281180726e8 269 int Wifly::putc(char c)
samux 6:f281180726e8 270 {
samux 6:f281180726e8 271 while (!wifi.writeable());
samux 6:f281180726e8 272 return wifi.putc(c);
samux 6:f281180726e8 273 }
samux 6:f281180726e8 274
samux 6:f281180726e8 275
samux 6:f281180726e8 276 bool Wifly::read(char * str)
samux 6:f281180726e8 277 {
samux 6:f281180726e8 278 int length = buf_wifly.available();
samux 6:f281180726e8 279 if (length == 0)
samux 6:f281180726e8 280 return false;
samux 6:f281180726e8 281 for (int i = 0; i < length; i++)
samux 6:f281180726e8 282 buf_wifly.dequeue(&str[i]);
samux 6:f281180726e8 283 str[length] = 0;
samux 6:f281180726e8 284 return true;
samux 6:f281180726e8 285 }
samux 6:f281180726e8 286
samux 6:f281180726e8 287
samux 6:f281180726e8 288 bool Wifly::exit()
samux 6:f281180726e8 289 {
samux 6:f281180726e8 290 flush();
samux 6:f281180726e8 291 if (!cmd_mode)
samux 6:f281180726e8 292 return true;
samux 6:f281180726e8 293 if (send("exit\r", 5, "EXIT") == -1)
samux 6:f281180726e8 294 return false;
samux 6:f281180726e8 295 cmd_mode = false;
samux 6:f281180726e8 296 flush();
samux 6:f281180726e8 297 return true;
samux 6:f281180726e8 298 }
samux 6:f281180726e8 299
samux 6:f281180726e8 300
samux 6:f281180726e8 301 int Wifly::readable()
samux 6:f281180726e8 302 {
samux 6:f281180726e8 303 return buf_wifly.available();
samux 6:f281180726e8 304 }
samux 6:f281180726e8 305
samux 6:f281180726e8 306 int Wifly::writeable()
samux 6:f281180726e8 307 {
samux 6:f281180726e8 308 return wifi.writeable();
samux 6:f281180726e8 309 }
samux 6:f281180726e8 310
samux 6:f281180726e8 311 char Wifly::getc()
samux 6:f281180726e8 312 {
samux 6:f281180726e8 313 char c;
samux 6:f281180726e8 314 while (!buf_wifly.available());
samux 6:f281180726e8 315 buf_wifly.dequeue(&c);
samux 6:f281180726e8 316 return c;
samux 6:f281180726e8 317 }
samux 6:f281180726e8 318
samux 6:f281180726e8 319 void Wifly::handler_rx(void)
samux 6:f281180726e8 320 {
samux 6:f281180726e8 321 //read characters
samux 6:f281180726e8 322 while (wifi.readable())
samux 6:f281180726e8 323 buf_wifly.queue(wifi.getc());
samux 6:f281180726e8 324 }
samux 6:f281180726e8 325
samux 6:f281180726e8 326 void Wifly::attach_rx(bool callback)
samux 6:f281180726e8 327 {
samux 6:f281180726e8 328 if (!callback)
samux 6:f281180726e8 329 wifi.attach(NULL);
samux 6:f281180726e8 330 else
samux 6:f281180726e8 331 wifi.attach(this, &Wifly::handler_rx);
samux 6:f281180726e8 332 }
samux 6:f281180726e8 333
samux 6:f281180726e8 334
samux 6:f281180726e8 335 int Wifly::send(const char * str, int len, const char * ACK, char * res, int timeout)
samux 6:f281180726e8 336 {
samux 6:f281180726e8 337 char read;
samux 6:f281180726e8 338 size_t found = string::npos;
samux 6:f281180726e8 339 string checking;
samux 6:f281180726e8 340 Timer tmr;
samux 6:f281180726e8 341 int result = 0;
samux 6:f281180726e8 342
samux 6:f281180726e8 343 DBG("will send: %s\r\n",str);
samux 6:f281180726e8 344
samux 6:f281180726e8 345 attach_rx(false);
samux 6:f281180726e8 346
samux 6:f281180726e8 347 //We flush the buffer
samux 6:f281180726e8 348 while (wifi.readable())
samux 6:f281180726e8 349 wifi.getc();
samux 6:f281180726e8 350
samux 6:f281180726e8 351 if (!ACK || !strcmp(ACK, "NO")) {
samux 6:f281180726e8 352 for (int i = 0; i < len; i++)
samux 6:f281180726e8 353 result = (putc(str[i]) == str[i]) ? result + 1 : result;
samux 6:f281180726e8 354 } else {
samux 6:f281180726e8 355 //We flush the buffer
samux 6:f281180726e8 356 while (wifi.readable())
samux 6:f281180726e8 357 wifi.getc();
samux 6:f281180726e8 358
samux 6:f281180726e8 359 tmr.start();
samux 6:f281180726e8 360 for (int i = 0; i < len; i++)
samux 6:f281180726e8 361 result = (putc(str[i]) == str[i]) ? result + 1 : result;
samux 6:f281180726e8 362
samux 6:f281180726e8 363 while (1) {
samux 6:f281180726e8 364 if (tmr.read_ms() > timeout) {
samux 6:f281180726e8 365 //We flush the buffer
samux 6:f281180726e8 366 while (wifi.readable())
samux 6:f281180726e8 367 wifi.getc();
samux 6:f281180726e8 368
samux 6:f281180726e8 369 DBG("check: %s\r\n", checking.c_str());
samux 6:f281180726e8 370
samux 6:f281180726e8 371 attach_rx(true);
samux 6:f281180726e8 372 return -1;
samux 6:f281180726e8 373 } else if (wifi.readable()) {
samux 6:f281180726e8 374 read = wifi.getc();
samux 6:f281180726e8 375 if ( read != '\r' && read != '\n') {
samux 6:f281180726e8 376 checking += read;
samux 6:f281180726e8 377 found = checking.find(ACK);
samux 6:f281180726e8 378 if (found != string::npos) {
samux 6:f281180726e8 379 wait(0.01);
samux 6:f281180726e8 380
samux 6:f281180726e8 381 //We flush the buffer
samux 6:f281180726e8 382 while (wifi.readable())
samux 6:f281180726e8 383 wifi.getc();
samux 6:f281180726e8 384
samux 6:f281180726e8 385 break;
samux 6:f281180726e8 386 }
samux 6:f281180726e8 387 }
samux 6:f281180726e8 388 }
samux 6:f281180726e8 389 }
samux 6:f281180726e8 390 DBG("check: %s\r\n", checking.c_str());
samux 6:f281180726e8 391
samux 6:f281180726e8 392 attach_rx(true);
samux 6:f281180726e8 393 return result;
samux 6:f281180726e8 394 }
samux 6:f281180726e8 395
samux 6:f281180726e8 396 //the user wants the result from the command (ACK == NULL, res != NULL)
samux 6:f281180726e8 397 if ( res != NULL) {
samux 6:f281180726e8 398 int i = 0;
samux 6:f281180726e8 399 Timer timeout;
samux 6:f281180726e8 400 timeout.start();
samux 6:f281180726e8 401 tmr.reset();
samux 6:f281180726e8 402 while (1) {
samux 6:f281180726e8 403 if (timeout.read() > 2) {
samux 6:f281180726e8 404 if (i == 0) {
samux 6:f281180726e8 405 res = NULL;
samux 6:f281180726e8 406 break;
samux 6:f281180726e8 407 }
samux 6:f281180726e8 408 res[i] = '\0';
samux 6:f281180726e8 409 DBG("user str 1: %s\r\n", res);
samux 6:f281180726e8 410
samux 6:f281180726e8 411 break;
samux 6:f281180726e8 412 } else {
samux 6:f281180726e8 413 if (tmr.read_ms() > 300) {
samux 6:f281180726e8 414 res[i] = '\0';
samux 6:f281180726e8 415 DBG("user str: %s\r\n", res);
samux 6:f281180726e8 416
samux 6:f281180726e8 417 break;
samux 6:f281180726e8 418 }
samux 6:f281180726e8 419 if (wifi.readable()) {
samux 6:f281180726e8 420 tmr.start();
samux 6:f281180726e8 421 read = wifi.getc();
samux 6:f281180726e8 422
samux 6:f281180726e8 423 // we drop \r and \n
samux 6:f281180726e8 424 if ( read != '\r' && read != '\n') {
samux 6:f281180726e8 425 res[i++] = read;
samux 6:f281180726e8 426 }
samux 6:f281180726e8 427 }
samux 6:f281180726e8 428 }
samux 6:f281180726e8 429 }
samux 6:f281180726e8 430 DBG("user str: %s\r\n", res);
samux 6:f281180726e8 431 }
samux 6:f281180726e8 432
samux 6:f281180726e8 433 //We flush the buffer
samux 6:f281180726e8 434 while (wifi.readable())
samux 6:f281180726e8 435 wifi.getc();
samux 6:f281180726e8 436
samux 6:f281180726e8 437 attach_rx(true);
samux 6:f281180726e8 438 DBG("result: %d\r\n", result)
samux 6:f281180726e8 439 return result;
samux 0:6ffb0aeb3972 440 }