Damien Frost / WiflyInterface

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Wifly/Wifly.cpp@18:cf3bd54703a5, 2016-03-25 (annotated)

Committer:
defrost
Date:
Fri Mar 25 11:14:33 2016 +0000
Revision:
18:cf3bd54703a5
Parent:
16:de16e8b077c1
Child:
20:3616a765c1b8
- Added more debug statements; - increased the size of the rcv and cmd buffers in some commands to accomodate the string lengths that can be expected. For example: 'open 192.168.111.123 12345' contains 26 chars

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>
defrost 18:cf3bd54703a5 23 #define DEBUG
samux 1:fb4494783863 24 //Debug is disabled by default
screamer 10:131675c17372 25 #if (defined(DEBUG))
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
screamer 10:131675c17372 35 #if defined(DEBUG)
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
defrost 15:eaa1ec0e26bf 68 void Wifly::setBaud(int baudrate)
defrost 15:eaa1ec0e26bf 69 {
defrost 18:cf3bd54703a5 70 char cmd[28];
defrost 15:eaa1ec0e26bf 71 // This sets the baud rate 'instantly'
defrost 15:eaa1ec0e26bf 72 sprintf(cmd, "set u i %d\r", baudrate);
defrost 15:eaa1ec0e26bf 73 // This one sets it some other way that does not work
defrost 15:eaa1ec0e26bf 74 //sprintf(cmd, "set u b %d\r", baudrate);
defrost 15:eaa1ec0e26bf 75 // Set baud rate of wifly:
defrost 16:de16e8b077c1 76 sendCommand(cmd, NULL);
defrost 16:de16e8b077c1 77 wait(0.5);
defrost 15:eaa1ec0e26bf 78 // Set baud rate of UART:
defrost 15:eaa1ec0e26bf 79 wifi.baud(baudrate);
defrost 16:de16e8b077c1 80 wait(0.5);
defrost 15:eaa1ec0e26bf 81 exit();
defrost 15:eaa1ec0e26bf 82 }
defrost 15:eaa1ec0e26bf 83
samux 1:fb4494783863 84 bool Wifly::join()
samux 1:fb4494783863 85 {
defrost 18:cf3bd54703a5 86 char cmd[28];
samux 1:fb4494783863 87
samux 1:fb4494783863 88 for (int i= 0; i < MAX_TRY_JOIN; i++) {
samux 2:8e54830d0df7 89
samux 2:8e54830d0df7 90 // no auto join
samux 2:8e54830d0df7 91 if (!sendCommand("set w j 0\r", "AOK"))
samux 2:8e54830d0df7 92 continue;
samux 2:8e54830d0df7 93
samux 2:8e54830d0df7 94 //no echo
samux 2:8e54830d0df7 95 if (!sendCommand("set u m 1\r", "AOK"))
samux 2:8e54830d0df7 96 continue;
samux 2:8e54830d0df7 97
samux 1:fb4494783863 98 // set time
samux 4:0bcec6272784 99 if (!sendCommand("set c t 30\r", "AOK"))
samux 1:fb4494783863 100 continue;
samux 1:fb4494783863 101
samux 1:fb4494783863 102 // set size
samux 4:0bcec6272784 103 if (!sendCommand("set c s 1024\r", "AOK"))
samux 1:fb4494783863 104 continue;
samux 1:fb4494783863 105
samux 1:fb4494783863 106 // red led on when tcp connection active
samux 1:fb4494783863 107 if (!sendCommand("set s i 0x40\r", "AOK"))
samux 1:fb4494783863 108 continue;
samux 1:fb4494783863 109
samux 1:fb4494783863 110 // no string sent to the tcp client
samux 1:fb4494783863 111 if (!sendCommand("set c r 0\r", "AOK"))
samux 1:fb4494783863 112 continue;
samux 1:fb4494783863 113
samux 1:fb4494783863 114 // tcp protocol
samux 1:fb4494783863 115 if (!sendCommand("set i p 2\r", "AOK"))
samux 1:fb4494783863 116 continue;
samux 1:fb4494783863 117
samux 1:fb4494783863 118 // tcp retry
samux 1:fb4494783863 119 if (!sendCommand("set i f 0x7\r", "AOK"))
samux 1:fb4494783863 120 continue;
samux 2:8e54830d0df7 121
samux 2:8e54830d0df7 122 // set dns server
samux 2:8e54830d0df7 123 if (!sendCommand("set d n rn.microchip.com\r", "AOK"))
samux 1:fb4494783863 124 continue;
samux 1:fb4494783863 125
samux 1:fb4494783863 126 //dhcp
samux 1:fb4494783863 127 sprintf(cmd, "set i d %d\r", (state.dhcp) ? 1 : 0);
samux 1:fb4494783863 128 if (!sendCommand(cmd, "AOK"))
samux 1:fb4494783863 129 continue;
samux 1:fb4494783863 130
samux 1:fb4494783863 131 // ssid
samux 1:fb4494783863 132 sprintf(cmd, "set w s %s\r", ssid);
lz307 7:3152fcc74390 133 if (!sendCommand(cmd, "AOK", NULL, 1000))
samux 1:fb4494783863 134 continue;
samux 1:fb4494783863 135
samux 1:fb4494783863 136 //auth
samux 1:fb4494783863 137 sprintf(cmd, "set w a %d\r", state.sec);
samux 1:fb4494783863 138 if (!sendCommand(cmd, "AOK"))
samux 1:fb4494783863 139 continue;
samux 1:fb4494783863 140
samux 1:fb4494783863 141 // if no dhcp, set ip, netmask and gateway
samux 1:fb4494783863 142 if (!state.dhcp) {
samux 1:fb4494783863 143 DBG("not dhcp\r");
samux 1:fb4494783863 144
samux 1:fb4494783863 145 sprintf(cmd, "set i a %s\r\n", ip);
samux 1:fb4494783863 146 if (!sendCommand(cmd, "AOK"))
samux 1:fb4494783863 147 continue;
samux 1:fb4494783863 148
samux 1:fb4494783863 149 sprintf(cmd, "set i n %s\r", netmask);
samux 1:fb4494783863 150 if (!sendCommand(cmd, "AOK"))
samux 1:fb4494783863 151 continue;
samux 1:fb4494783863 152
samux 1:fb4494783863 153 sprintf(cmd, "set i g %s\r", gateway);
samux 1:fb4494783863 154 if (!sendCommand(cmd, "AOK"))
samux 1:fb4494783863 155 continue;
samux 1:fb4494783863 156 }
samux 1:fb4494783863 157
samux 1:fb4494783863 158 //key step
samux 1:fb4494783863 159 if (state.sec != NONE) {
defrost 12:1aaea7f302e6 160 if ((state.sec == WPA)||(state.sec == WPA2))
samux 1:fb4494783863 161 sprintf(cmd, "set w p %s\r", phrase);
samux 1:fb4494783863 162 else if (state.sec == WEP_128)
samux 1:fb4494783863 163 sprintf(cmd, "set w k %s\r", phrase);
samux 1:fb4494783863 164
lz307 7:3152fcc74390 165 if (!sendCommand(cmd, "AOK", NULL, 1000))
samux 1:fb4494783863 166 continue;
samux 1:fb4494783863 167 }
samux 1:fb4494783863 168
samux 1:fb4494783863 169 //join the network
samux 1:fb4494783863 170 sprintf(cmd, "join\r");
samux 1:fb4494783863 171 if (!sendCommand(cmd, "Associated", NULL, 3000))
samux 1:fb4494783863 172 continue;
lz307 7:3152fcc74390 173
lz307 7:3152fcc74390 174 if (!sendCommand("", "IP=", NULL, 10000))
lz307 7:3152fcc74390 175 continue;
samux 1:fb4494783863 176
samux 1:fb4494783863 177 if (state.dhcp) {
lz307 7:3152fcc74390 178 if (!sendCommand("get i\r", "DHCP=ON", NULL, 3000))
samux 1:fb4494783863 179 continue;
samux 1:fb4494783863 180 }
samux 1:fb4494783863 181
samux 2:8e54830d0df7 182 if (!sendCommand("save\r", "Stor"))
samux 2:8e54830d0df7 183 continue;
samux 2:8e54830d0df7 184
samux 1:fb4494783863 185 exit();
samux 1:fb4494783863 186
samux 1:fb4494783863 187 state.associated = true;
samux 1:fb4494783863 188 INFO("\r\nssid: %s\r\nphrase: %s\r\nsecurity: %s\r\n\r\n", this->ssid, this->phrase, getStringSecurity());
defrost 13:8846f12fa277 189
samux 1:fb4494783863 190 return true;
samux 1:fb4494783863 191 }
samux 1:fb4494783863 192 return false;
samux 1:fb4494783863 193 }
samux 1:fb4494783863 194
samux 1:fb4494783863 195
samux 1:fb4494783863 196 bool Wifly::setProtocol(Protocol p)
samux 1:fb4494783863 197 {
samux 1:fb4494783863 198 // use udp auto pairing
samux 1:fb4494783863 199 char cmd[20];
samux 1:fb4494783863 200 sprintf(cmd, "set i p %d\r", p);
samux 1:fb4494783863 201 if (!sendCommand(cmd, "AOK"))
samux 1:fb4494783863 202 return false;
samux 1:fb4494783863 203
samux 1:fb4494783863 204 switch(p) {
samux 1:fb4494783863 205 case TCP:
samux 1:fb4494783863 206 // set ip flags: tcp retry enabled
samux 1:fb4494783863 207 if (!sendCommand("set i f 0x07\r", "AOK"))
samux 1:fb4494783863 208 return false;
samux 1:fb4494783863 209 break;
samux 1:fb4494783863 210 case UDP:
samux 1:fb4494783863 211 // set ip flags: udp auto pairing enabled
samux 1:fb4494783863 212 if (!sendCommand("set i h 0.0.0.0\r", "AOK"))
samux 1:fb4494783863 213 return false;
samux 4:0bcec6272784 214 if (!sendCommand("set i f 0x40\r", "AOK"))
samux 1:fb4494783863 215 return false;
samux 1:fb4494783863 216 break;
samux 1:fb4494783863 217 }
samux 1:fb4494783863 218 state.proto = p;
samux 1:fb4494783863 219 return true;
samux 1:fb4494783863 220 }
samux 1:fb4494783863 221
samux 1:fb4494783863 222 char * Wifly::getStringSecurity()
samux 1:fb4494783863 223 {
samux 1:fb4494783863 224 switch(state.sec) {
samux 1:fb4494783863 225 case NONE:
samux 1:fb4494783863 226 return "NONE";
samux 1:fb4494783863 227 case WEP_128:
samux 1:fb4494783863 228 return "WEP_128";
samux 1:fb4494783863 229 case WPA:
samux 1:fb4494783863 230 return "WPA";
defrost 13:8846f12fa277 231 case WPA2:
defrost 13:8846f12fa277 232 return "WPA2";
samux 1:fb4494783863 233 }
samux 1:fb4494783863 234 return "UNKNOWN";
samux 1:fb4494783863 235 }
samux 1:fb4494783863 236
samux 1:fb4494783863 237 bool Wifly::connect(const char * host, int port)
samux 1:fb4494783863 238 {
defrost 18:cf3bd54703a5 239 char rcv[28];
defrost 18:cf3bd54703a5 240 char cmd[28];
defrost 12:1aaea7f302e6 241
defrost 12:1aaea7f302e6 242
samux 1:fb4494783863 243
samux 2:8e54830d0df7 244 // try to open
samux 2:8e54830d0df7 245 sprintf(cmd, "open %s %d\r", host, port);
defrost 18:cf3bd54703a5 246 DBG("CMD1: %s\n\r",cmd);
defrost 18:cf3bd54703a5 247 if (sendCommand(cmd, "OPEN", rcv, 10000)) {
samux 2:8e54830d0df7 248 state.tcp = true;
samux 2:8e54830d0df7 249 state.cmd_mode = false;
samux 2:8e54830d0df7 250 return true;
samux 1:fb4494783863 251 }
defrost 18:cf3bd54703a5 252 DBG("CMD2: %s\n\r",cmd);
defrost 18:cf3bd54703a5 253 DBG("CMD4: %s\n\r",rcv);
samux 2:8e54830d0df7 254 // if failed, retry and parse the response
samux 2:8e54830d0df7 255 if (sendCommand(cmd, NULL, rcv, 5000)) {
samux 1:fb4494783863 256 if (strstr(rcv, "OPEN") == NULL) {
samux 1:fb4494783863 257 if (strstr(rcv, "Connected") != NULL) {
samux 2:8e54830d0df7 258 wait(0.25);
samux 1:fb4494783863 259 if (!sendCommand("close\r", "CLOS"))
samux 1:fb4494783863 260 return false;
samux 2:8e54830d0df7 261 wait(0.25);
samux 2:8e54830d0df7 262 if (!sendCommand(cmd, "OPEN", NULL, 10000))
samux 1:fb4494783863 263 return false;
samux 1:fb4494783863 264 } else {
samux 1:fb4494783863 265 return false;
samux 1:fb4494783863 266 }
samux 1:fb4494783863 267 }
samux 1:fb4494783863 268 } else {
samux 1:fb4494783863 269 return false;
samux 1:fb4494783863 270 }
defrost 12:1aaea7f302e6 271
samux 2:8e54830d0df7 272
samux 1:fb4494783863 273 state.tcp = true;
samux 1:fb4494783863 274 state.cmd_mode = false;
samux 1:fb4494783863 275
samux 1:fb4494783863 276 return true;
samux 1:fb4494783863 277 }
samux 1:fb4494783863 278
samux 1:fb4494783863 279
samux 1:fb4494783863 280 bool Wifly::gethostbyname(const char * host, char * ip)
samux 1:fb4494783863 281 {
samux 1:fb4494783863 282 string h = host;
samux 1:fb4494783863 283 char cmd[30], rcv[100];
samux 1:fb4494783863 284 int l = 0;
samux 1:fb4494783863 285 char * point;
samux 1:fb4494783863 286 int nb_digits = 0;
samux 1:fb4494783863 287
samux 1:fb4494783863 288 // no dns needed
samux 1:fb4494783863 289 int pos = h.find(".");
samux 1:fb4494783863 290 if (pos != string::npos) {
samux 1:fb4494783863 291 string sub = h.substr(0, h.find("."));
samux 1:fb4494783863 292 nb_digits = atoi(sub.c_str());
samux 1:fb4494783863 293 }
samux 1:fb4494783863 294 //printf("substrL %s\r\n", sub.c_str());
samux 1:fb4494783863 295 if (count(h.begin(), h.end(), '.') == 3 && nb_digits > 0) {
samux 1:fb4494783863 296 strcpy(ip, host);
samux 1:fb4494783863 297 }
samux 1:fb4494783863 298 // dns needed
samux 1:fb4494783863 299 else {
samux 1:fb4494783863 300 nb_digits = 0;
samux 1:fb4494783863 301 sprintf(cmd, "lookup %s\r", host);
samux 1:fb4494783863 302 if (!sendCommand(cmd, NULL, rcv))
samux 1:fb4494783863 303 return false;
samux 1:fb4494783863 304
samux 1:fb4494783863 305 // look for the ip address
samux 1:fb4494783863 306 char * begin = strstr(rcv, "=") + 1;
samux 1:fb4494783863 307 for (int i = 0; i < 3; i++) {
samux 1:fb4494783863 308 point = strstr(begin + l, ".");
samux 1:fb4494783863 309 DBG("str: %s", begin + l);
samux 1:fb4494783863 310 l += point - (begin + l) + 1;
samux 1:fb4494783863 311 }
samux 1:fb4494783863 312 DBG("str: %s", begin + l);
samux 1:fb4494783863 313 while(*(begin + l + nb_digits) >= '0' && *(begin + l + nb_digits) <= '9') {
samux 1:fb4494783863 314 DBG("digit: %c", *(begin + l + nb_digits));
samux 1:fb4494783863 315 nb_digits++;
samux 1:fb4494783863 316 }
samux 1:fb4494783863 317 memcpy(ip, begin, l + nb_digits);
samux 1:fb4494783863 318 ip[l+nb_digits] = 0;
samux 1:fb4494783863 319 DBG("ip from dns: %s", ip);
samux 1:fb4494783863 320 }
samux 1:fb4494783863 321 return true;
samux 1:fb4494783863 322 }
samux 1:fb4494783863 323
samux 1:fb4494783863 324
samux 1:fb4494783863 325 void Wifly::flush()
samux 1:fb4494783863 326 {
samux 1:fb4494783863 327 buf_wifly.flush();
samux 1:fb4494783863 328 }
samux 1:fb4494783863 329
samux 1:fb4494783863 330 bool Wifly::sendCommand(const char * cmd, const char * ack, char * res, int timeout)
samux 1:fb4494783863 331 {
samux 1:fb4494783863 332 if (!state.cmd_mode) {
samux 1:fb4494783863 333 cmdMode();
samux 1:fb4494783863 334 }
samux 1:fb4494783863 335 if (send(cmd, strlen(cmd), ack, res, timeout) == -1) {
samux 1:fb4494783863 336 ERR("sendCommand: cannot %s\r\n", cmd);
samux 1:fb4494783863 337 exit();
samux 1:fb4494783863 338 return false;
samux 1:fb4494783863 339 }
samux 1:fb4494783863 340 return true;
samux 1:fb4494783863 341 }
samux 1:fb4494783863 342
samux 1:fb4494783863 343 bool Wifly::cmdMode()
samux 1:fb4494783863 344 {
samux 1:fb4494783863 345 // if already in cmd mode, return
samux 1:fb4494783863 346 if (state.cmd_mode)
samux 1:fb4494783863 347 return true;
samux 1:fb4494783863 348
lz307 7:3152fcc74390 349 if (send("$$$", 3, "CMD") == -1 && send("\r",1,">") != true) {
samux 1:fb4494783863 350 ERR("cannot enter in cmd mode\r\n");
samux 2:8e54830d0df7 351 exit();
samux 1:fb4494783863 352 return false;
samux 1:fb4494783863 353 }
samux 1:fb4494783863 354 state.cmd_mode = true;
samux 1:fb4494783863 355 return true;
samux 1:fb4494783863 356 }
samux 1:fb4494783863 357
samux 1:fb4494783863 358 bool Wifly::disconnect()
samux 1:fb4494783863 359 {
samux 1:fb4494783863 360 // if already disconnected, return
samux 1:fb4494783863 361 if (!state.associated)
samux 1:fb4494783863 362 return true;
samux 2:8e54830d0df7 363
samux 1:fb4494783863 364 if (!sendCommand("leave\r", "DeAuth"))
samux 1:fb4494783863 365 return false;
samux 1:fb4494783863 366 exit();
samux 2:8e54830d0df7 367
samux 1:fb4494783863 368 state.associated = false;
samux 1:fb4494783863 369 return true;
samux 1:fb4494783863 370
samux 1:fb4494783863 371 }
samux 1:fb4494783863 372
samux 1:fb4494783863 373 bool Wifly::is_connected()
samux 1:fb4494783863 374 {
samux 1:fb4494783863 375 return (tcp_status.read() == 1) ? true : false;
samux 1:fb4494783863 376 }
samux 1:fb4494783863 377
samux 1:fb4494783863 378
samux 1:fb4494783863 379 void Wifly::reset()
samux 1:fb4494783863 380 {
samux 1:fb4494783863 381 reset_pin = 0;
samux 1:fb4494783863 382 wait(0.2);
samux 1:fb4494783863 383 reset_pin = 1;
samux 1:fb4494783863 384 wait(0.2);
samux 1:fb4494783863 385 }
samux 1:fb4494783863 386
samux 3:9aa05e19c62e 387 bool Wifly::reboot()
samux 3:9aa05e19c62e 388 {
samux 3:9aa05e19c62e 389 // if already in cmd mode, return
samux 3:9aa05e19c62e 390 if (!sendCommand("reboot\r"))
samux 3:9aa05e19c62e 391 return false;
samux 3:9aa05e19c62e 392
samux 3:9aa05e19c62e 393 wait(0.3);
samux 3:9aa05e19c62e 394
samux 3:9aa05e19c62e 395 state.cmd_mode = false;
samux 3:9aa05e19c62e 396 return true;
samux 3:9aa05e19c62e 397 }
samux 3:9aa05e19c62e 398
samux 1:fb4494783863 399 bool Wifly::close()
samux 1:fb4494783863 400 {
samux 1:fb4494783863 401 // if not connected, return
samux 1:fb4494783863 402 if (!state.tcp)
samux 1:fb4494783863 403 return true;
samux 2:8e54830d0df7 404
samux 1:fb4494783863 405 wait(0.25);
samux 1:fb4494783863 406 if (!sendCommand("close\r", "CLOS"))
samux 1:fb4494783863 407 return false;
samux 1:fb4494783863 408 exit();
samux 2:8e54830d0df7 409
samux 1:fb4494783863 410 state.tcp = false;
samux 1:fb4494783863 411 return true;
samux 1:fb4494783863 412 }
samux 1:fb4494783863 413
samux 1:fb4494783863 414
samux 1:fb4494783863 415 int Wifly::putc(char c)
samux 1:fb4494783863 416 {
samux 1:fb4494783863 417 while (!wifi.writeable());
samux 1:fb4494783863 418 return wifi.putc(c);
samux 1:fb4494783863 419 }
samux 1:fb4494783863 420
samux 1:fb4494783863 421
samux 1:fb4494783863 422 bool Wifly::exit()
samux 1:fb4494783863 423 {
samux 1:fb4494783863 424 flush();
samux 1:fb4494783863 425 if (!state.cmd_mode)
samux 1:fb4494783863 426 return true;
samux 1:fb4494783863 427 if (!sendCommand("exit\r", "EXIT"))
samux 1:fb4494783863 428 return false;
samux 1:fb4494783863 429 state.cmd_mode = false;
samux 1:fb4494783863 430 flush();
samux 1:fb4494783863 431 return true;
samux 1:fb4494783863 432 }
samux 1:fb4494783863 433
samux 1:fb4494783863 434
samux 1:fb4494783863 435 int Wifly::readable()
samux 1:fb4494783863 436 {
samux 1:fb4494783863 437 return buf_wifly.available();
samux 1:fb4494783863 438 }
samux 1:fb4494783863 439
samux 1:fb4494783863 440 int Wifly::writeable()
samux 1:fb4494783863 441 {
samux 1:fb4494783863 442 return wifi.writeable();
samux 1:fb4494783863 443 }
samux 1:fb4494783863 444
samux 1:fb4494783863 445 char Wifly::getc()
samux 1:fb4494783863 446 {
samux 1:fb4494783863 447 char c;
samux 1:fb4494783863 448 while (!buf_wifly.available());
samux 1:fb4494783863 449 buf_wifly.dequeue(&c);
samux 1:fb4494783863 450 return c;
samux 1:fb4494783863 451 }
samux 1:fb4494783863 452
samux 1:fb4494783863 453 void Wifly::handler_rx(void)
samux 1:fb4494783863 454 {
samux 1:fb4494783863 455 //read characters
samux 1:fb4494783863 456 while (wifi.readable())
samux 1:fb4494783863 457 buf_wifly.queue(wifi.getc());
samux 1:fb4494783863 458 }
samux 1:fb4494783863 459
samux 1:fb4494783863 460 void Wifly::attach_rx(bool callback)
samux 1:fb4494783863 461 {
samux 1:fb4494783863 462 if (!callback)
samux 1:fb4494783863 463 wifi.attach(NULL);
samux 1:fb4494783863 464 else
samux 1:fb4494783863 465 wifi.attach(this, &Wifly::handler_rx);
samux 1:fb4494783863 466 }
samux 1:fb4494783863 467
samux 1:fb4494783863 468
samux 1:fb4494783863 469 int Wifly::send(const char * str, int len, const char * ACK, char * res, int timeout)
samux 1:fb4494783863 470 {
samux 1:fb4494783863 471 char read;
samux 1:fb4494783863 472 size_t found = string::npos;
samux 1:fb4494783863 473 string checking;
samux 1:fb4494783863 474 Timer tmr;
samux 1:fb4494783863 475 int result = 0;
samux 1:fb4494783863 476
samux 1:fb4494783863 477 DBG("will send: %s\r\n",str);
samux 1:fb4494783863 478
samux 1:fb4494783863 479 attach_rx(false);
samux 1:fb4494783863 480
samux 1:fb4494783863 481 //We flush the buffer
samux 1:fb4494783863 482 while (wifi.readable())
samux 1:fb4494783863 483 wifi.getc();
samux 1:fb4494783863 484
samux 1:fb4494783863 485 if (!ACK || !strcmp(ACK, "NO")) {
samux 1:fb4494783863 486 for (int i = 0; i < len; i++)
samux 1:fb4494783863 487 result = (putc(str[i]) == str[i]) ? result + 1 : result;
samux 1:fb4494783863 488 } else {
samux 1:fb4494783863 489 //We flush the buffer
samux 1:fb4494783863 490 while (wifi.readable())
samux 1:fb4494783863 491 wifi.getc();
samux 1:fb4494783863 492
samux 1:fb4494783863 493 tmr.start();
samux 1:fb4494783863 494 for (int i = 0; i < len; i++)
samux 1:fb4494783863 495 result = (putc(str[i]) == str[i]) ? result + 1 : result;
samux 1:fb4494783863 496
samux 1:fb4494783863 497 while (1) {
samux 1:fb4494783863 498 if (tmr.read_ms() > timeout) {
samux 1:fb4494783863 499 //We flush the buffer
samux 1:fb4494783863 500 while (wifi.readable())
samux 1:fb4494783863 501 wifi.getc();
samux 1:fb4494783863 502
samux 1:fb4494783863 503 DBG("check: %s\r\n", checking.c_str());
defrost 18:cf3bd54703a5 504 DBG("result ignored: %d\r\n", result)
samux 1:fb4494783863 505 attach_rx(true);
samux 1:fb4494783863 506 return -1;
samux 1:fb4494783863 507 } else if (wifi.readable()) {
samux 1:fb4494783863 508 read = wifi.getc();
samux 1:fb4494783863 509 if ( read != '\r' && read != '\n') {
samux 1:fb4494783863 510 checking += read;
samux 1:fb4494783863 511 found = checking.find(ACK);
samux 1:fb4494783863 512 if (found != string::npos) {
samux 1:fb4494783863 513 wait(0.01);
samux 1:fb4494783863 514
samux 1:fb4494783863 515 //We flush the buffer
samux 1:fb4494783863 516 while (wifi.readable())
samux 1:fb4494783863 517 wifi.getc();
samux 1:fb4494783863 518
samux 1:fb4494783863 519 break;
samux 1:fb4494783863 520 }
samux 1:fb4494783863 521 }
samux 1:fb4494783863 522 }
samux 1:fb4494783863 523 }
samux 1:fb4494783863 524 DBG("check: %s\r\n", checking.c_str());
defrost 18:cf3bd54703a5 525 DBG("result: %d\r\n", result)
samux 1:fb4494783863 526 attach_rx(true);
samux 1:fb4494783863 527 return result;
samux 1:fb4494783863 528 }
samux 1:fb4494783863 529
samux 1:fb4494783863 530 //the user wants the result from the command (ACK == NULL, res != NULL)
samux 1:fb4494783863 531 if ( res != NULL) {
samux 1:fb4494783863 532 int i = 0;
samux 1:fb4494783863 533 Timer timeout;
samux 1:fb4494783863 534 timeout.start();
samux 1:fb4494783863 535 tmr.reset();
samux 1:fb4494783863 536 while (1) {
samux 1:fb4494783863 537 if (timeout.read() > 2) {
samux 1:fb4494783863 538 if (i == 0) {
samux 1:fb4494783863 539 res = NULL;
samux 1:fb4494783863 540 break;
samux 1:fb4494783863 541 }
samux 1:fb4494783863 542 res[i] = '\0';
samux 1:fb4494783863 543 DBG("user str 1: %s\r\n", res);
samux 1:fb4494783863 544
samux 1:fb4494783863 545 break;
samux 1:fb4494783863 546 } else {
samux 1:fb4494783863 547 if (tmr.read_ms() > 300) {
samux 1:fb4494783863 548 res[i] = '\0';
defrost 18:cf3bd54703a5 549 DBG("user str2: %s\r\n", res);
samux 1:fb4494783863 550
samux 1:fb4494783863 551 break;
samux 1:fb4494783863 552 }
samux 1:fb4494783863 553 if (wifi.readable()) {
samux 1:fb4494783863 554 tmr.start();
samux 1:fb4494783863 555 read = wifi.getc();
samux 1:fb4494783863 556
samux 1:fb4494783863 557 // we drop \r and \n
samux 1:fb4494783863 558 if ( read != '\r' && read != '\n') {
samux 1:fb4494783863 559 res[i++] = read;
samux 1:fb4494783863 560 }
samux 1:fb4494783863 561 }
samux 1:fb4494783863 562 }
samux 1:fb4494783863 563 }
defrost 18:cf3bd54703a5 564 DBG("user str3: %s\r\n", res);
samux 1:fb4494783863 565 }
samux 1:fb4494783863 566
samux 1:fb4494783863 567 //We flush the buffer
samux 1:fb4494783863 568 while (wifi.readable())
samux 1:fb4494783863 569 wifi.getc();
samux 1:fb4494783863 570
samux 1:fb4494783863 571 attach_rx(true);
samux 1:fb4494783863 572 DBG("result: %d\r\n", result)
samux 1:fb4494783863 573 return result;
samux 1:fb4494783863 574 }