fernan robin / Projet-matthieu

wifly/socket interface for wifly modules

Dependents:   PROJET_MATTHIEU_2019 PROJET_MATTHIEU_2019

Wifly/Wifly.cpp@3:10b3866f0ea2, 2012-08-22 (annotated)

Committer:
samux
Date:
Wed Aug 22 16:22:32 2012 +0000
Revision:
3:10b3866f0ea2
Parent:
2:d78b1f66e345
Child:
4:74bfdd00362a
switched off dbg/can join ssid containing whitespace

Who changed what in which revision?

UserRevisionLine numberNew contents of line
samux 3:10b3866f0ea2 1 /* Copyright (C) 2012 mbed.org, MIT License
samux 3:10b3866f0ea2 2 *
samux 3:10b3866f0ea2 3 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
samux 3:10b3866f0ea2 4 * and associated documentation files (the "Software"), to deal in the Software without restriction,
samux 3:10b3866f0ea2 5 * including without limitation the rights to use, copy, modify, merge, publish, distribute,
samux 3:10b3866f0ea2 6 * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
samux 3:10b3866f0ea2 7 * furnished to do so, subject to the following conditions:
samux 3:10b3866f0ea2 8 *
samux 3:10b3866f0ea2 9 * The above copyright notice and this permission notice shall be included in all copies or
samux 3:10b3866f0ea2 10 * substantial portions of the Software.
samux 3:10b3866f0ea2 11 *
samux 3:10b3866f0ea2 12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
samux 3:10b3866f0ea2 13 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
samux 3:10b3866f0ea2 14 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
samux 3:10b3866f0ea2 15 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
samux 3:10b3866f0ea2 16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
samux 3:10b3866f0ea2 17 */
samux 3:10b3866f0ea2 18
samux 3:10b3866f0ea2 19 #include "mbed.h"
samux 3:10b3866f0ea2 20 #include "Wifly.h"
samux 3:10b3866f0ea2 21 #include <string>
samux 3:10b3866f0ea2 22 #include <algorithm>
samux 3:10b3866f0ea2 23
samux 3:10b3866f0ea2 24 //Debug is disabled by default
samux 3:10b3866f0ea2 25 #if 0
samux 3:10b3866f0ea2 26 #define DBG(x, ...) std::printf("[Wifly : DBG]"x"\r\n", ##__VA_ARGS__);
samux 3:10b3866f0ea2 27 #define WARN(x, ...) std::printf("[Wifly : WARN]"x"\r\n", ##__VA_ARGS__);
samux 3:10b3866f0ea2 28 #define ERR(x, ...) std::printf("[Wifly : ERR]"x"\r\n", ##__VA_ARGS__);
samux 3:10b3866f0ea2 29 #else
samux 3:10b3866f0ea2 30 #define DBG(x, ...)
samux 3:10b3866f0ea2 31 #define WARN(x, ...)
samux 3:10b3866f0ea2 32 #define ERR(x, ...)
samux 3:10b3866f0ea2 33 #endif
samux 3:10b3866f0ea2 34
samux 3:10b3866f0ea2 35 #define INFO(x, ...) printf("[Wifly : INFO]"x"\r\n", ##__VA_ARGS__);
samux 3:10b3866f0ea2 36
samux 3:10b3866f0ea2 37 Wifly * Wifly::inst;
samux 3:10b3866f0ea2 38
samux 3:10b3866f0ea2 39 Wifly::Wifly( PinName tx, PinName rx, PinName _reset, PinName tcp_status, const char * ssid, const char * phrase, bool wpa):
samux 3:10b3866f0ea2 40 wifi(tx, rx), reset_pin(_reset), tcp_status(tcp_status), buf_wifly(256)
samux 3:10b3866f0ea2 41 {
samux 3:10b3866f0ea2 42 this->wpa = wpa;
samux 3:10b3866f0ea2 43 this->phrase = phrase;
samux 3:10b3866f0ea2 44 this->ssid = ssid;
samux 3:10b3866f0ea2 45 inst = this;
samux 3:10b3866f0ea2 46 attach_rx(false);
samux 3:10b3866f0ea2 47 cmd_mode = false;
samux 3:10b3866f0ea2 48 }
samux 3:10b3866f0ea2 49
samux 3:10b3866f0ea2 50 bool Wifly::join()
samux 3:10b3866f0ea2 51 {
samux 3:10b3866f0ea2 52 char cmd[100];
samux 3:10b3866f0ea2 53
samux 3:10b3866f0ea2 54 if (!sendCommand("set comm time 20\r", "AOK"))
samux 3:10b3866f0ea2 55 return false;
samux 3:10b3866f0ea2 56
samux 3:10b3866f0ea2 57 if (!sendCommand("set comm size 128\r", "AOK"))
samux 3:10b3866f0ea2 58 return false;
samux 3:10b3866f0ea2 59
samux 3:10b3866f0ea2 60 if (!sendCommand("set sys iofunc 0x40\r", "AOK"))
samux 3:10b3866f0ea2 61 return false;
samux 3:10b3866f0ea2 62
samux 3:10b3866f0ea2 63 // no string sent to the tcp client
samux 3:10b3866f0ea2 64 if (!sendCommand("set comm remote 0\r", "AOK"))
samux 3:10b3866f0ea2 65 return false;
samux 3:10b3866f0ea2 66
samux 3:10b3866f0ea2 67 // tcp protocol
samux 3:10b3866f0ea2 68 if (!sendCommand("set ip proto 2\r", "AOK"))
samux 3:10b3866f0ea2 69 return false;
samux 3:10b3866f0ea2 70
samux 3:10b3866f0ea2 71 // tcp retry
samux 3:10b3866f0ea2 72 if (!sendCommand("set ip flags 0x7\r", "AOK"))
samux 3:10b3866f0ea2 73 return false;
samux 3:10b3866f0ea2 74
samux 3:10b3866f0ea2 75 //no echo
samux 3:10b3866f0ea2 76 if (!sendCommand("set u m 1\r", "AOK"))
samux 3:10b3866f0ea2 77 return false;
samux 3:10b3866f0ea2 78
samux 3:10b3866f0ea2 79 //dhcp
samux 3:10b3866f0ea2 80 sprintf(cmd, "set i d %d\r", (dhcp) ? 1 : 0);
samux 3:10b3866f0ea2 81 if (!sendCommand(cmd, "AOK"))
samux 3:10b3866f0ea2 82 return false;
samux 3:10b3866f0ea2 83
samux 3:10b3866f0ea2 84 if (dhcp) {
samux 3:10b3866f0ea2 85 if (!sendCommand("get w\r", NULL, cmd))
samux 3:10b3866f0ea2 86 return false;
samux 3:10b3866f0ea2 87
samux 3:10b3866f0ea2 88 // if the wlan parameters are already known, we just connect without resending all commands
samux 3:10b3866f0ea2 89 if ((string(cmd).find(ssid) != string::npos) && (string(cmd).find(phrase) != string::npos) ) {
samux 3:10b3866f0ea2 90 DBG("ssid found && phrase found\r\n");
samux 3:10b3866f0ea2 91 Timer tmr;
samux 3:10b3866f0ea2 92 tmr.start();
samux 3:10b3866f0ea2 93 while (tmr.read() < 2) {
samux 3:10b3866f0ea2 94 send("show c\r", 7, NULL, cmd);
samux 3:10b3866f0ea2 95 DBG("join: state of conn: %s\r\n", cmd);
samux 3:10b3866f0ea2 96 if ((cmd[2] - '0') & 0x01) {
samux 3:10b3866f0ea2 97 INFO("\r\nssid: %s\r\nphrase: %s\r\nsecurity: %s\r\n\r\n", this->ssid, this->phrase, (wpa) ? "WPA" : "WEP");
samux 3:10b3866f0ea2 98 // save
samux 3:10b3866f0ea2 99 if (!sendCommand("save\r", "Stor"))
samux 3:10b3866f0ea2 100 return false;
samux 3:10b3866f0ea2 101 reboot();
samux 3:10b3866f0ea2 102 return true;
samux 3:10b3866f0ea2 103 }
samux 3:10b3866f0ea2 104 wait(0.2);
samux 3:10b3866f0ea2 105 }
samux 3:10b3866f0ea2 106 }
samux 3:10b3866f0ea2 107
samux 3:10b3866f0ea2 108 DBG("getw: %s\r\n", cmd);
samux 3:10b3866f0ea2 109 }
samux 3:10b3866f0ea2 110
samux 3:10b3866f0ea2 111 // ssid
samux 3:10b3866f0ea2 112 sprintf(cmd, "set w s %s\r", ssid);
samux 3:10b3866f0ea2 113 if (!sendCommand(cmd, "AOK"))
samux 3:10b3866f0ea2 114 return false;
samux 3:10b3866f0ea2 115
samux 3:10b3866f0ea2 116 //auth
samux 3:10b3866f0ea2 117 sprintf(cmd, "set w a %d\r", (wpa) ? 3 : 1);
samux 3:10b3866f0ea2 118 if (!sendCommand(cmd, "AOK"))
samux 3:10b3866f0ea2 119 return false;
samux 3:10b3866f0ea2 120
samux 3:10b3866f0ea2 121 // if no dhcp, set ip, netmask and gateway
samux 3:10b3866f0ea2 122 if (!dhcp) {
samux 3:10b3866f0ea2 123 DBG("not dhcp\r");
samux 3:10b3866f0ea2 124
samux 3:10b3866f0ea2 125 sprintf(cmd, "set i a %s\r\n", ip);
samux 3:10b3866f0ea2 126 if (!sendCommand(cmd, "AOK"))
samux 3:10b3866f0ea2 127 return false;
samux 3:10b3866f0ea2 128
samux 3:10b3866f0ea2 129 sprintf(cmd, "set i n %s\r", netmask);
samux 3:10b3866f0ea2 130 if (!sendCommand(cmd, "AOK"))
samux 3:10b3866f0ea2 131 return false;
samux 3:10b3866f0ea2 132
samux 3:10b3866f0ea2 133 sprintf(cmd, "set i g %s\r", gateway);
samux 3:10b3866f0ea2 134 if (!sendCommand(cmd, "AOK"))
samux 3:10b3866f0ea2 135 return false;
samux 3:10b3866f0ea2 136 }
samux 3:10b3866f0ea2 137
samux 3:10b3866f0ea2 138 //key step
samux 3:10b3866f0ea2 139 if (wpa)
samux 3:10b3866f0ea2 140 sprintf(cmd, "set w p %s\r", phrase);
samux 3:10b3866f0ea2 141 else
samux 3:10b3866f0ea2 142 sprintf(cmd, "set w k %s\r", phrase);
samux 3:10b3866f0ea2 143
samux 3:10b3866f0ea2 144 if (!sendCommand(cmd, "AOK"))
samux 3:10b3866f0ea2 145 return false;
samux 3:10b3866f0ea2 146
samux 3:10b3866f0ea2 147 // auto join
samux 3:10b3866f0ea2 148 if (!sendCommand("set w j 1\r", "AOK"))
samux 3:10b3866f0ea2 149 return false;
samux 3:10b3866f0ea2 150
samux 3:10b3866f0ea2 151 // save
samux 3:10b3866f0ea2 152 if (!sendCommand("save\r", "Stor"))
samux 3:10b3866f0ea2 153 return false;
samux 3:10b3866f0ea2 154
samux 3:10b3866f0ea2 155 //join the network
samux 3:10b3866f0ea2 156 sprintf(cmd, "join\r");
samux 3:10b3866f0ea2 157 if (!sendCommand(cmd, "Associated"))
samux 3:10b3866f0ea2 158 return false;
samux 3:10b3866f0ea2 159
samux 3:10b3866f0ea2 160 reboot();
samux 3:10b3866f0ea2 161
samux 3:10b3866f0ea2 162 INFO("\r\nssid: %s\r\nphrase: %s\r\nsecurity: %s\r\n\r\n", this->ssid, this->phrase, (wpa) ? "WPA" : "WEP");
samux 3:10b3866f0ea2 163 return true;
samux 3:10b3866f0ea2 164 }
samux 3:10b3866f0ea2 165
samux 3:10b3866f0ea2 166
samux 3:10b3866f0ea2 167 bool Wifly::dnsLookup(const char * host, char * ip)
samux 3:10b3866f0ea2 168 {
samux 3:10b3866f0ea2 169 string h = host;
samux 3:10b3866f0ea2 170 char cmd[30], rcv[30];
samux 3:10b3866f0ea2 171 int l = 0;
samux 3:10b3866f0ea2 172 char * point;
samux 3:10b3866f0ea2 173 int nb_digits = 0;
samux 3:10b3866f0ea2 174
samux 3:10b3866f0ea2 175 // no dns needed
samux 3:10b3866f0ea2 176 if (atoi(host) > 0 && count(h.begin(), h.end(), '.') == 4) {
samux 3:10b3866f0ea2 177 strcpy(ip, host);
samux 3:10b3866f0ea2 178 }
samux 3:10b3866f0ea2 179 // dns needed
samux 3:10b3866f0ea2 180 else {
samux 3:10b3866f0ea2 181 sprintf(cmd, "lookup %s\r", host);
samux 3:10b3866f0ea2 182 if (!sendCommand(cmd, NULL, rcv))
samux 3:10b3866f0ea2 183 return false;
samux 3:10b3866f0ea2 184 DBG("lookup: %s\r\n", rcv);
samux 3:10b3866f0ea2 185
samux 3:10b3866f0ea2 186 // look for the ip address
samux 3:10b3866f0ea2 187 char * begin = strstr(rcv, "=") + 1;
samux 3:10b3866f0ea2 188 for (int i = 0; i < 3; i++) {
samux 3:10b3866f0ea2 189 point = strstr(begin + l, ".");
samux 3:10b3866f0ea2 190 DBG("str: %s", begin + l);
samux 3:10b3866f0ea2 191 l += point - (begin + l) + 1;
samux 3:10b3866f0ea2 192 }
samux 3:10b3866f0ea2 193 DBG("str: %s", begin + l);
samux 3:10b3866f0ea2 194 while(*(begin + l + nb_digits) >= '0' && *(begin + l + nb_digits) <= '9') {
samux 3:10b3866f0ea2 195 DBG("digit: %c", *(begin + l + nb_digits));
samux 3:10b3866f0ea2 196 nb_digits++;
samux 3:10b3866f0ea2 197 }
samux 3:10b3866f0ea2 198 memcpy(ip, begin, l + nb_digits);
samux 3:10b3866f0ea2 199 ip[l+nb_digits] = 0;
samux 3:10b3866f0ea2 200 DBG("ip from dns: %s", ip);
samux 3:10b3866f0ea2 201 }
samux 3:10b3866f0ea2 202 return true;
samux 3:10b3866f0ea2 203 }
samux 3:10b3866f0ea2 204
samux 3:10b3866f0ea2 205 bool Wifly::reboot()
samux 3:10b3866f0ea2 206 {
samux 3:10b3866f0ea2 207 if (!sendCommand("reboot\r", "boot"))
samux 3:10b3866f0ea2 208 return false;
samux 3:10b3866f0ea2 209 wait(0.2);
samux 3:10b3866f0ea2 210 // wait that the module fetches an IP
samux 3:10b3866f0ea2 211 if (dhcp) {
samux 3:10b3866f0ea2 212 while(send("", 0, "DHCP=ON") == -1);
samux 3:10b3866f0ea2 213 } else {
samux 3:10b3866f0ea2 214 while(send("", 0, "Static") == -1);
samux 3:10b3866f0ea2 215 }
samux 3:10b3866f0ea2 216 flush();
samux 3:10b3866f0ea2 217 cmd_mode = false;
samux 3:10b3866f0ea2 218 return true;
samux 3:10b3866f0ea2 219 }
samux 3:10b3866f0ea2 220
samux 3:10b3866f0ea2 221
samux 3:10b3866f0ea2 222 void Wifly::flush()
samux 3:10b3866f0ea2 223 {
samux 3:10b3866f0ea2 224 buf_wifly.flush();
samux 3:10b3866f0ea2 225 }
samux 3:10b3866f0ea2 226
samux 3:10b3866f0ea2 227 bool Wifly::sendCommand(const char * cmd, const char * ack, char * res)
samux 3:10b3866f0ea2 228 {
samux 3:10b3866f0ea2 229 if (!cmd_mode) {
samux 3:10b3866f0ea2 230 cmdMode();
samux 3:10b3866f0ea2 231 }
samux 3:10b3866f0ea2 232 if (send(cmd, strlen(cmd), ack, res) == -1) {
samux 3:10b3866f0ea2 233 ERR("sendCommand: cannot %s\r\n", cmd);
samux 3:10b3866f0ea2 234 exit();
samux 3:10b3866f0ea2 235 return false;
samux 3:10b3866f0ea2 236 }
samux 3:10b3866f0ea2 237 return true;
samux 3:10b3866f0ea2 238 }
samux 3:10b3866f0ea2 239
samux 3:10b3866f0ea2 240 bool Wifly::cmdMode()
samux 3:10b3866f0ea2 241 {
samux 3:10b3866f0ea2 242 if (send("$$$", 3, "CMD") == -1) {
samux 3:10b3866f0ea2 243 ERR("cannot enter in cmd mode\r\n");
samux 3:10b3866f0ea2 244 return false;
samux 3:10b3866f0ea2 245 }
samux 3:10b3866f0ea2 246 cmd_mode = true;
samux 3:10b3866f0ea2 247 return true;
samux 3:10b3866f0ea2 248 }
samux 3:10b3866f0ea2 249
samux 3:10b3866f0ea2 250 bool Wifly::leave()
samux 3:10b3866f0ea2 251 {
samux 3:10b3866f0ea2 252 if (!sendCommand("leave\r", "DeAuth"))
samux 3:10b3866f0ea2 253 return false;
samux 3:10b3866f0ea2 254 exit();
samux 3:10b3866f0ea2 255 return true;
samux 3:10b3866f0ea2 256
samux 3:10b3866f0ea2 257 }
samux 3:10b3866f0ea2 258
samux 3:10b3866f0ea2 259 bool Wifly::is_connected()
samux 3:10b3866f0ea2 260 {
samux 3:10b3866f0ea2 261 return (tcp_status.read() == 1) ? true : false;
samux 3:10b3866f0ea2 262 }
samux 3:10b3866f0ea2 263
samux 3:10b3866f0ea2 264
samux 3:10b3866f0ea2 265 void Wifly::reset()
samux 3:10b3866f0ea2 266 {
samux 3:10b3866f0ea2 267 reset_pin = 0;
samux 3:10b3866f0ea2 268 wait(0.2);
samux 3:10b3866f0ea2 269 reset_pin = 1;
samux 3:10b3866f0ea2 270 wait(0.2);
samux 3:10b3866f0ea2 271 }
samux 3:10b3866f0ea2 272
samux 3:10b3866f0ea2 273 bool Wifly::close()
samux 3:10b3866f0ea2 274 {
samux 3:10b3866f0ea2 275 wait(0.25);
samux 3:10b3866f0ea2 276 if (!cmdMode())
samux 3:10b3866f0ea2 277 return false;
samux 3:10b3866f0ea2 278 if (send("close\r", 6, "CLOS") == -1)
samux 3:10b3866f0ea2 279 return false;
samux 3:10b3866f0ea2 280 exit();
samux 3:10b3866f0ea2 281 return true;
samux 3:10b3866f0ea2 282 }
samux 3:10b3866f0ea2 283
samux 3:10b3866f0ea2 284
samux 3:10b3866f0ea2 285 int Wifly::putc(char c)
samux 3:10b3866f0ea2 286 {
samux 3:10b3866f0ea2 287 while (!wifi.writeable());
samux 3:10b3866f0ea2 288 return wifi.putc(c);
samux 3:10b3866f0ea2 289 }
samux 3:10b3866f0ea2 290
samux 3:10b3866f0ea2 291
samux 3:10b3866f0ea2 292 bool Wifly::read(char * str)
samux 3:10b3866f0ea2 293 {
samux 3:10b3866f0ea2 294 int length = buf_wifly.available();
samux 3:10b3866f0ea2 295 if (length == 0)
samux 3:10b3866f0ea2 296 return false;
samux 3:10b3866f0ea2 297 for (int i = 0; i < length; i++)
samux 3:10b3866f0ea2 298 buf_wifly.dequeue(&str[i]);
samux 3:10b3866f0ea2 299 str[length] = 0;
samux 3:10b3866f0ea2 300 return true;
samux 3:10b3866f0ea2 301 }
samux 3:10b3866f0ea2 302
samux 3:10b3866f0ea2 303
samux 3:10b3866f0ea2 304 bool Wifly::exit()
samux 3:10b3866f0ea2 305 {
samux 3:10b3866f0ea2 306 flush();
samux 3:10b3866f0ea2 307 if (send("exit\r", 5, "EXIT") == -1)
samux 3:10b3866f0ea2 308 return false;
samux 3:10b3866f0ea2 309 cmd_mode = false;
samux 3:10b3866f0ea2 310 return true;
samux 3:10b3866f0ea2 311 }
samux 3:10b3866f0ea2 312
samux 3:10b3866f0ea2 313
samux 3:10b3866f0ea2 314 int Wifly::readable()
samux 3:10b3866f0ea2 315 {
samux 3:10b3866f0ea2 316 return buf_wifly.available();
samux 3:10b3866f0ea2 317 }
samux 3:10b3866f0ea2 318
samux 3:10b3866f0ea2 319 int Wifly::writeable()
samux 3:10b3866f0ea2 320 {
samux 3:10b3866f0ea2 321 return wifi.writeable();
samux 3:10b3866f0ea2 322 }
samux 3:10b3866f0ea2 323
samux 3:10b3866f0ea2 324 char Wifly::getc()
samux 3:10b3866f0ea2 325 {
samux 3:10b3866f0ea2 326 char c;
samux 3:10b3866f0ea2 327 while (!buf_wifly.available());
samux 3:10b3866f0ea2 328 buf_wifly.dequeue(&c);
samux 3:10b3866f0ea2 329 return c;
samux 3:10b3866f0ea2 330 }
samux 3:10b3866f0ea2 331
samux 3:10b3866f0ea2 332 void Wifly::handler_rx(void)
samux 3:10b3866f0ea2 333 {
samux 3:10b3866f0ea2 334 //read characters
samux 3:10b3866f0ea2 335 while (wifi.readable())
samux 3:10b3866f0ea2 336 buf_wifly.queue(wifi.getc());
samux 3:10b3866f0ea2 337 }
samux 3:10b3866f0ea2 338
samux 3:10b3866f0ea2 339 void Wifly::attach_rx(bool callback)
samux 3:10b3866f0ea2 340 {
samux 3:10b3866f0ea2 341 if (!callback)
samux 3:10b3866f0ea2 342 wifi.attach(NULL);
samux 3:10b3866f0ea2 343 else
samux 3:10b3866f0ea2 344 wifi.attach(this, &Wifly::handler_rx);
samux 3:10b3866f0ea2 345 }
samux 3:10b3866f0ea2 346
samux 3:10b3866f0ea2 347
samux 3:10b3866f0ea2 348 int Wifly::send(const char * str, int len, const char * ACK, char * res)
samux 3:10b3866f0ea2 349 {
samux 3:10b3866f0ea2 350 char read;
samux 3:10b3866f0ea2 351 size_t found = string::npos;
samux 3:10b3866f0ea2 352 string checking;
samux 3:10b3866f0ea2 353 Timer tmr;
samux 3:10b3866f0ea2 354 int result = 0;
samux 3:10b3866f0ea2 355
samux 3:10b3866f0ea2 356 DBG("will send: %s\r\n",str);
samux 3:10b3866f0ea2 357
samux 3:10b3866f0ea2 358 attach_rx(false);
samux 3:10b3866f0ea2 359
samux 3:10b3866f0ea2 360 //We flush the buffer
samux 3:10b3866f0ea2 361 while (wifi.readable())
samux 3:10b3866f0ea2 362 wifi.getc();
samux 3:10b3866f0ea2 363
samux 3:10b3866f0ea2 364 if (!ACK || !strcmp(ACK, "NO")) {
samux 3:10b3866f0ea2 365 for (int i = 0; i < len; i++)
samux 3:10b3866f0ea2 366 result = (putc(str[i]) == str[i]) ? result + 1 : result;
samux 3:10b3866f0ea2 367 } else {
samux 3:10b3866f0ea2 368 //We flush the buffer
samux 3:10b3866f0ea2 369 while (wifi.readable())
samux 3:10b3866f0ea2 370 wifi.getc();
samux 3:10b3866f0ea2 371
samux 3:10b3866f0ea2 372 tmr.start();
samux 3:10b3866f0ea2 373 for (int i = 0; i < len; i++)
samux 3:10b3866f0ea2 374 result = (putc(str[i]) == str[i]) ? result + 1 : result;
samux 3:10b3866f0ea2 375
samux 3:10b3866f0ea2 376 while (1) {
samux 3:10b3866f0ea2 377 if (tmr.read() > 2) {
samux 3:10b3866f0ea2 378 //We flush the buffer
samux 3:10b3866f0ea2 379 while (wifi.readable())
samux 3:10b3866f0ea2 380 wifi.getc();
samux 3:10b3866f0ea2 381
samux 3:10b3866f0ea2 382 DBG("check: %s\r\n", checking.c_str());
samux 3:10b3866f0ea2 383
samux 3:10b3866f0ea2 384 attach_rx(true);
samux 3:10b3866f0ea2 385 return -1;
samux 3:10b3866f0ea2 386 } else if (wifi.readable()) {
samux 3:10b3866f0ea2 387 read = wifi.getc();
samux 3:10b3866f0ea2 388 if ( read != '\r' && read != '\n') {
samux 3:10b3866f0ea2 389 checking += read;
samux 3:10b3866f0ea2 390 found = checking.find(ACK);
samux 3:10b3866f0ea2 391 if (found != string::npos) {
samux 3:10b3866f0ea2 392 wait(0.01);
samux 3:10b3866f0ea2 393
samux 3:10b3866f0ea2 394 //We flush the buffer
samux 3:10b3866f0ea2 395 while (wifi.readable())
samux 3:10b3866f0ea2 396 wifi.getc();
samux 3:10b3866f0ea2 397
samux 3:10b3866f0ea2 398 break;
samux 3:10b3866f0ea2 399 }
samux 3:10b3866f0ea2 400 }
samux 3:10b3866f0ea2 401 }
samux 3:10b3866f0ea2 402 }
samux 3:10b3866f0ea2 403 DBG("check: %s\r\n", checking.c_str());
samux 3:10b3866f0ea2 404
samux 3:10b3866f0ea2 405 attach_rx(true);
samux 3:10b3866f0ea2 406 return result;
samux 3:10b3866f0ea2 407 }
samux 3:10b3866f0ea2 408
samux 3:10b3866f0ea2 409 //the user wants the result from the command (ACK == NULL, res != NULL)
samux 3:10b3866f0ea2 410 if ( res != NULL) {
samux 3:10b3866f0ea2 411 int i = 0;
samux 3:10b3866f0ea2 412 Timer timeout;
samux 3:10b3866f0ea2 413 timeout.start();
samux 3:10b3866f0ea2 414 tmr.reset();
samux 3:10b3866f0ea2 415 while (1) {
samux 3:10b3866f0ea2 416 if (timeout.read() > 2) {
samux 3:10b3866f0ea2 417 if (i == 0) {
samux 3:10b3866f0ea2 418 res = NULL;
samux 3:10b3866f0ea2 419 break;
samux 3:10b3866f0ea2 420 }
samux 3:10b3866f0ea2 421 res[i] = '\0';
samux 3:10b3866f0ea2 422 DBG("user str 1: %s\r\n", res);
samux 3:10b3866f0ea2 423
samux 3:10b3866f0ea2 424 break;
samux 3:10b3866f0ea2 425 } else {
samux 3:10b3866f0ea2 426 if (tmr.read_ms() > 300) {
samux 3:10b3866f0ea2 427 res[i] = '\0';
samux 3:10b3866f0ea2 428 DBG("user str: %s\r\n", res);
samux 3:10b3866f0ea2 429
samux 3:10b3866f0ea2 430 break;
samux 3:10b3866f0ea2 431 }
samux 3:10b3866f0ea2 432 if (wifi.readable()) {
samux 3:10b3866f0ea2 433 tmr.start();
samux 3:10b3866f0ea2 434 read = wifi.getc();
samux 3:10b3866f0ea2 435
samux 3:10b3866f0ea2 436 // we drop \r and \n
samux 3:10b3866f0ea2 437 if ( read != '\r' && read != '\n') {
samux 3:10b3866f0ea2 438 res[i++] = read;
samux 3:10b3866f0ea2 439 }
samux 3:10b3866f0ea2 440 }
samux 3:10b3866f0ea2 441 }
samux 3:10b3866f0ea2 442 }
samux 3:10b3866f0ea2 443 DBG("user str: %s\r\n", res);
samux 3:10b3866f0ea2 444 }
samux 3:10b3866f0ea2 445
samux 3:10b3866f0ea2 446 //We flush the buffer
samux 3:10b3866f0ea2 447 while (wifi.readable())
samux 3:10b3866f0ea2 448 wifi.getc();
samux 3:10b3866f0ea2 449
samux 3:10b3866f0ea2 450 attach_rx(true);
samux 3:10b3866f0ea2 451 DBG("result: %d\r\n", result)
samux 3:10b3866f0ea2 452 return result;
samux 0:6ffb0aeb3972 453 }