ESP8266 / ESP8266NodeMCUInterface

ESP8266 driver using the NodeMCU interface

Dependencies:   BufferedSerial

Dependents:   esp8266_nodeMCU1 esp8266_2_thingspeak1 Solarator_0-0-2 IoTBurglar_and_Fire_AlarmSystem ... more

Fork of ESP8266Interface by ESP8266

This is an alternative implementation of the ESP8266 driver that uses the NodeMCU firmware. The NodeMCU firmware provides a slightly larger feature set than the default firmware through a Lua interpreter.

Note

This library is currently in Alpha. It is not feature complete and has some bugs, proceed with caution. Fixes and patches are welcome!

Interface changes

  • SSID and passphrase moved out of ESP8266Interface constructor and to ESP8266Interface::connect
  • ESP8266Interface constructor provides optional timeout parameter to specify how long to wait for network operations

Note

NodeMCU defaults to a baud rate of 9600 instead of 115200 used by the default firmware.

Firmware

To install the NodeMCU firmware, follow the instructions on the Firmware Update wiki page using the nodemcu_integer_0.9.6-dev_20150406.bin binary at address 0x00000 instead of boot_v1.1.bin and user1.bin.

Since the NodeMCU firmware defaults to a baud rate of 9600, the Serial Passthrough program can be used to get direct access to the Lua interpreter running on the ESP8266.

Status

Working features:

  • TCP Client
  • UDP Client Transmit (Currently only UDP Server can recieve messages)
  • Single Connection at a time
  • Station Mode (Connects to AP)
  • DNS Lookups

To be implemented:

  • TCP Server
  • UDP Server
  • UDP Client recieve
  • Multiple Connections tracked through Lua variables
  • AP Mode (Act as access point)
  • IPV6 support (Existing issue with NodeMCU)

Wifly/Wifly.cpp@11:fc3d86645d23, 2014-06-03 (annotated)

Committer:
screamer
Date:
Tue Jun 03 18:43:14 2014 +0000
Revision:
11:fc3d86645d23
Parent:
10:131675c17372
Parent:
8:04afe20d7927
Child:
12:c5f0eac67a8a
More merges

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
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
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 4:0bcec6272784 83 if (!sendCommand("set c t 30\r", "AOK"))
samux 1:fb4494783863 84 continue;
samux 1:fb4494783863 85
samux 1:fb4494783863 86 // set size
samux 4:0bcec6272784 87 if (!sendCommand("set c s 1024\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);
lz307 7:3152fcc74390 117 if (!sendCommand(cmd, "AOK", NULL, 1000))
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
lz307 7:3152fcc74390 149 if (!sendCommand(cmd, "AOK", NULL, 1000))
samux 1:fb4494783863 150 continue;
samux 1:fb4494783863 151 }
samux 1:fb4494783863 152
samux 1:fb4494783863 153 //join the network
samux 1:fb4494783863 154 sprintf(cmd, "join\r");
samux 1:fb4494783863 155 if (!sendCommand(cmd, "Associated", NULL, 3000))
samux 1:fb4494783863 156 continue;
lz307 7:3152fcc74390 157
lz307 7:3152fcc74390 158 if (!sendCommand("", "IP=", NULL, 10000))
lz307 7:3152fcc74390 159 continue;
samux 1:fb4494783863 160
samux 1:fb4494783863 161 if (state.dhcp) {
lz307 7:3152fcc74390 162 if (!sendCommand("get i\r", "DHCP=ON", NULL, 3000))
samux 1:fb4494783863 163 continue;
samux 1:fb4494783863 164 }
samux 1:fb4494783863 165
samux 2:8e54830d0df7 166 if (!sendCommand("save\r", "Stor"))
samux 2:8e54830d0df7 167 continue;
samux 2:8e54830d0df7 168
samux 1:fb4494783863 169 exit();
samux 1:fb4494783863 170
samux 1:fb4494783863 171 state.associated = true;
samux 1:fb4494783863 172 INFO("\r\nssid: %s\r\nphrase: %s\r\nsecurity: %s\r\n\r\n", this->ssid, this->phrase, getStringSecurity());
samux 1:fb4494783863 173 return true;
samux 1:fb4494783863 174 }
samux 1:fb4494783863 175 return false;
samux 1:fb4494783863 176 }
samux 1:fb4494783863 177
samux 1:fb4494783863 178
samux 1:fb4494783863 179 bool Wifly::setProtocol(Protocol p)
samux 1:fb4494783863 180 {
samux 1:fb4494783863 181 // use udp auto pairing
samux 1:fb4494783863 182 char cmd[20];
samux 1:fb4494783863 183 sprintf(cmd, "set i p %d\r", p);
samux 1:fb4494783863 184 if (!sendCommand(cmd, "AOK"))
samux 1:fb4494783863 185 return false;
samux 1:fb4494783863 186
samux 1:fb4494783863 187 switch(p) {
samux 1:fb4494783863 188 case TCP:
samux 1:fb4494783863 189 // set ip flags: tcp retry enabled
samux 1:fb4494783863 190 if (!sendCommand("set i f 0x07\r", "AOK"))
samux 1:fb4494783863 191 return false;
samux 1:fb4494783863 192 break;
samux 1:fb4494783863 193 case UDP:
samux 1:fb4494783863 194 // set ip flags: udp auto pairing enabled
samux 1:fb4494783863 195 if (!sendCommand("set i h 0.0.0.0\r", "AOK"))
samux 1:fb4494783863 196 return false;
samux 4:0bcec6272784 197 if (!sendCommand("set i f 0x40\r", "AOK"))
samux 1:fb4494783863 198 return false;
samux 1:fb4494783863 199 break;
samux 1:fb4494783863 200 }
samux 1:fb4494783863 201 state.proto = p;
samux 1:fb4494783863 202 return true;
samux 1:fb4494783863 203 }
samux 1:fb4494783863 204
samux 1:fb4494783863 205 char * Wifly::getStringSecurity()
samux 1:fb4494783863 206 {
samux 1:fb4494783863 207 switch(state.sec) {
samux 1:fb4494783863 208 case NONE:
samux 1:fb4494783863 209 return "NONE";
samux 1:fb4494783863 210 case WEP_128:
samux 1:fb4494783863 211 return "WEP_128";
samux 1:fb4494783863 212 case WPA:
samux 1:fb4494783863 213 return "WPA";
samux 1:fb4494783863 214 }
samux 1:fb4494783863 215 return "UNKNOWN";
samux 1:fb4494783863 216 }
samux 1:fb4494783863 217
samux 1:fb4494783863 218 bool Wifly::connect(const char * host, int port)
samux 1:fb4494783863 219 {
samux 1:fb4494783863 220 char rcv[20];
samux 1:fb4494783863 221 char cmd[20];
samux 1:fb4494783863 222
samux 2:8e54830d0df7 223 // try to open
samux 2:8e54830d0df7 224 sprintf(cmd, "open %s %d\r", host, port);
samux 2:8e54830d0df7 225 if (sendCommand(cmd, "OPEN", NULL, 10000)) {
samux 2:8e54830d0df7 226 state.tcp = true;
samux 2:8e54830d0df7 227 state.cmd_mode = false;
samux 2:8e54830d0df7 228 return true;
samux 1:fb4494783863 229 }
samux 1:fb4494783863 230
samux 2:8e54830d0df7 231 // if failed, retry and parse the response
samux 2:8e54830d0df7 232 if (sendCommand(cmd, NULL, rcv, 5000)) {
samux 1:fb4494783863 233 if (strstr(rcv, "OPEN") == NULL) {
samux 1:fb4494783863 234 if (strstr(rcv, "Connected") != NULL) {
samux 2:8e54830d0df7 235 wait(0.25);
samux 1:fb4494783863 236 if (!sendCommand("close\r", "CLOS"))
samux 1:fb4494783863 237 return false;
samux 2:8e54830d0df7 238 wait(0.25);
samux 2:8e54830d0df7 239 if (!sendCommand(cmd, "OPEN", NULL, 10000))
samux 1:fb4494783863 240 return false;
samux 1:fb4494783863 241 } else {
samux 1:fb4494783863 242 return false;
samux 1:fb4494783863 243 }
samux 1:fb4494783863 244 }
samux 1:fb4494783863 245 } else {
samux 1:fb4494783863 246 return false;
samux 1:fb4494783863 247 }
samux 2:8e54830d0df7 248
samux 1:fb4494783863 249 state.tcp = true;
samux 1:fb4494783863 250 state.cmd_mode = false;
samux 1:fb4494783863 251
samux 1:fb4494783863 252 return true;
samux 1:fb4494783863 253 }
samux 1:fb4494783863 254
samux 1:fb4494783863 255
samux 1:fb4494783863 256 bool Wifly::gethostbyname(const char * host, char * ip)
samux 1:fb4494783863 257 {
samux 1:fb4494783863 258 string h = host;
samux 1:fb4494783863 259 char cmd[30], rcv[100];
samux 1:fb4494783863 260 int l = 0;
samux 1:fb4494783863 261 char * point;
samux 1:fb4494783863 262 int nb_digits = 0;
samux 1:fb4494783863 263
samux 1:fb4494783863 264 // no dns needed
samux 1:fb4494783863 265 int pos = h.find(".");
samux 1:fb4494783863 266 if (pos != string::npos) {
samux 1:fb4494783863 267 string sub = h.substr(0, h.find("."));
samux 1:fb4494783863 268 nb_digits = atoi(sub.c_str());
samux 1:fb4494783863 269 }
samux 1:fb4494783863 270 //printf("substrL %s\r\n", sub.c_str());
samux 1:fb4494783863 271 if (count(h.begin(), h.end(), '.') == 3 && nb_digits > 0) {
samux 1:fb4494783863 272 strcpy(ip, host);
samux 1:fb4494783863 273 }
samux 1:fb4494783863 274 // dns needed
samux 1:fb4494783863 275 else {
samux 1:fb4494783863 276 nb_digits = 0;
samux 1:fb4494783863 277 sprintf(cmd, "lookup %s\r", host);
samux 1:fb4494783863 278 if (!sendCommand(cmd, NULL, rcv))
samux 1:fb4494783863 279 return false;
samux 1:fb4494783863 280
samux 1:fb4494783863 281 // look for the ip address
samux 1:fb4494783863 282 char * begin = strstr(rcv, "=") + 1;
samux 1:fb4494783863 283 for (int i = 0; i < 3; i++) {
samux 1:fb4494783863 284 point = strstr(begin + l, ".");
samux 1:fb4494783863 285 DBG("str: %s", begin + l);
samux 1:fb4494783863 286 l += point - (begin + l) + 1;
samux 1:fb4494783863 287 }
samux 1:fb4494783863 288 DBG("str: %s", begin + l);
samux 1:fb4494783863 289 while(*(begin + l + nb_digits) >= '0' && *(begin + l + nb_digits) <= '9') {
samux 1:fb4494783863 290 DBG("digit: %c", *(begin + l + nb_digits));
samux 1:fb4494783863 291 nb_digits++;
samux 1:fb4494783863 292 }
samux 1:fb4494783863 293 memcpy(ip, begin, l + nb_digits);
samux 1:fb4494783863 294 ip[l+nb_digits] = 0;
samux 1:fb4494783863 295 DBG("ip from dns: %s", ip);
samux 1:fb4494783863 296 }
samux 1:fb4494783863 297 return true;
samux 1:fb4494783863 298 }
samux 1:fb4494783863 299
samux 1:fb4494783863 300
samux 1:fb4494783863 301 void Wifly::flush()
samux 1:fb4494783863 302 {
samux 1:fb4494783863 303 buf_wifly.flush();
samux 1:fb4494783863 304 }
samux 1:fb4494783863 305
samux 1:fb4494783863 306 bool Wifly::sendCommand(const char * cmd, const char * ack, char * res, int timeout)
samux 1:fb4494783863 307 {
samux 1:fb4494783863 308 if (!state.cmd_mode) {
samux 1:fb4494783863 309 cmdMode();
samux 1:fb4494783863 310 }
samux 1:fb4494783863 311 if (send(cmd, strlen(cmd), ack, res, timeout) == -1) {
samux 1:fb4494783863 312 ERR("sendCommand: cannot %s\r\n", cmd);
samux 1:fb4494783863 313 exit();
samux 1:fb4494783863 314 return false;
samux 1:fb4494783863 315 }
samux 1:fb4494783863 316 return true;
samux 1:fb4494783863 317 }
samux 1:fb4494783863 318
samux 1:fb4494783863 319 bool Wifly::cmdMode()
samux 1:fb4494783863 320 {
samux 1:fb4494783863 321 // if already in cmd mode, return
samux 1:fb4494783863 322 if (state.cmd_mode)
samux 1:fb4494783863 323 return true;
samux 1:fb4494783863 324
lz307 7:3152fcc74390 325 if (send("$$$", 3, "CMD") == -1 && send("\r",1,">") != true) {
samux 1:fb4494783863 326 ERR("cannot enter in cmd mode\r\n");
samux 2:8e54830d0df7 327 exit();
samux 1:fb4494783863 328 return false;
samux 1:fb4494783863 329 }
samux 1:fb4494783863 330 state.cmd_mode = true;
samux 1:fb4494783863 331 return true;
samux 1:fb4494783863 332 }
samux 1:fb4494783863 333
samux 1:fb4494783863 334 bool Wifly::disconnect()
samux 1:fb4494783863 335 {
samux 1:fb4494783863 336 // if already disconnected, return
samux 1:fb4494783863 337 if (!state.associated)
samux 1:fb4494783863 338 return true;
samux 2:8e54830d0df7 339
samux 1:fb4494783863 340 if (!sendCommand("leave\r", "DeAuth"))
samux 1:fb4494783863 341 return false;
samux 1:fb4494783863 342 exit();
samux 2:8e54830d0df7 343
samux 1:fb4494783863 344 state.associated = false;
samux 1:fb4494783863 345 return true;
samux 1:fb4494783863 346
samux 1:fb4494783863 347 }
samux 1:fb4494783863 348
samux 1:fb4494783863 349 bool Wifly::is_connected()
samux 1:fb4494783863 350 {
samux 1:fb4494783863 351 return (tcp_status.read() == 1) ? true : false;
samux 1:fb4494783863 352 }
samux 1:fb4494783863 353
samux 1:fb4494783863 354
samux 1:fb4494783863 355 void Wifly::reset()
samux 1:fb4494783863 356 {
samux 1:fb4494783863 357 reset_pin = 0;
samux 1:fb4494783863 358 wait(0.2);
samux 1:fb4494783863 359 reset_pin = 1;
samux 1:fb4494783863 360 wait(0.2);
samux 1:fb4494783863 361 }
samux 1:fb4494783863 362
samux 3:9aa05e19c62e 363 bool Wifly::reboot()
samux 3:9aa05e19c62e 364 {
samux 3:9aa05e19c62e 365 // if already in cmd mode, return
samux 3:9aa05e19c62e 366 if (!sendCommand("reboot\r"))
samux 3:9aa05e19c62e 367 return false;
samux 3:9aa05e19c62e 368
samux 3:9aa05e19c62e 369 wait(0.3);
samux 3:9aa05e19c62e 370
samux 3:9aa05e19c62e 371 state.cmd_mode = false;
samux 3:9aa05e19c62e 372 return true;
samux 3:9aa05e19c62e 373 }
samux 3:9aa05e19c62e 374
samux 1:fb4494783863 375 bool Wifly::close()
samux 1:fb4494783863 376 {
samux 1:fb4494783863 377 // if not connected, return
samux 1:fb4494783863 378 if (!state.tcp)
samux 1:fb4494783863 379 return true;
samux 2:8e54830d0df7 380
samux 1:fb4494783863 381 wait(0.25);
samux 1:fb4494783863 382 if (!sendCommand("close\r", "CLOS"))
samux 1:fb4494783863 383 return false;
samux 1:fb4494783863 384 exit();
samux 2:8e54830d0df7 385
samux 1:fb4494783863 386 state.tcp = false;
samux 1:fb4494783863 387 return true;
samux 1:fb4494783863 388 }
samux 1:fb4494783863 389
samux 1:fb4494783863 390
samux 1:fb4494783863 391 int Wifly::putc(char c)
samux 1:fb4494783863 392 {
samux 1:fb4494783863 393 while (!wifi.writeable());
samux 1:fb4494783863 394 return wifi.putc(c);
samux 1:fb4494783863 395 }
samux 1:fb4494783863 396
samux 1:fb4494783863 397
samux 1:fb4494783863 398 bool Wifly::exit()
samux 1:fb4494783863 399 {
samux 1:fb4494783863 400 flush();
samux 1:fb4494783863 401 if (!state.cmd_mode)
samux 1:fb4494783863 402 return true;
samux 1:fb4494783863 403 if (!sendCommand("exit\r", "EXIT"))
samux 1:fb4494783863 404 return false;
samux 1:fb4494783863 405 state.cmd_mode = false;
samux 1:fb4494783863 406 flush();
samux 1:fb4494783863 407 return true;
samux 1:fb4494783863 408 }
samux 1:fb4494783863 409
samux 1:fb4494783863 410
samux 1:fb4494783863 411 int Wifly::readable()
samux 1:fb4494783863 412 {
samux 1:fb4494783863 413 return buf_wifly.available();
samux 1:fb4494783863 414 }
samux 1:fb4494783863 415
samux 1:fb4494783863 416 int Wifly::writeable()
samux 1:fb4494783863 417 {
samux 1:fb4494783863 418 return wifi.writeable();
samux 1:fb4494783863 419 }
samux 1:fb4494783863 420
samux 1:fb4494783863 421 char Wifly::getc()
samux 1:fb4494783863 422 {
samux 1:fb4494783863 423 char c;
samux 1:fb4494783863 424 while (!buf_wifly.available());
samux 1:fb4494783863 425 buf_wifly.dequeue(&c);
samux 1:fb4494783863 426 return c;
samux 1:fb4494783863 427 }
samux 1:fb4494783863 428
samux 1:fb4494783863 429 void Wifly::handler_rx(void)
samux 1:fb4494783863 430 {
samux 1:fb4494783863 431 //read characters
samux 1:fb4494783863 432 while (wifi.readable())
samux 1:fb4494783863 433 buf_wifly.queue(wifi.getc());
samux 1:fb4494783863 434 }
samux 1:fb4494783863 435
samux 1:fb4494783863 436 void Wifly::attach_rx(bool callback)
samux 1:fb4494783863 437 {
samux 1:fb4494783863 438 if (!callback)
samux 1:fb4494783863 439 wifi.attach(NULL);
samux 1:fb4494783863 440 else
samux 1:fb4494783863 441 wifi.attach(this, &Wifly::handler_rx);
samux 1:fb4494783863 442 }
samux 1:fb4494783863 443
samux 1:fb4494783863 444
samux 1:fb4494783863 445 int Wifly::send(const char * str, int len, const char * ACK, char * res, int timeout)
samux 1:fb4494783863 446 {
samux 1:fb4494783863 447 char read;
samux 1:fb4494783863 448 size_t found = string::npos;
samux 1:fb4494783863 449 string checking;
samux 1:fb4494783863 450 Timer tmr;
samux 1:fb4494783863 451 int result = 0;
samux 1:fb4494783863 452
samux 1:fb4494783863 453 DBG("will send: %s\r\n",str);
samux 1:fb4494783863 454
samux 1:fb4494783863 455 attach_rx(false);
samux 1:fb4494783863 456
samux 1:fb4494783863 457 //We flush the buffer
samux 1:fb4494783863 458 while (wifi.readable())
samux 1:fb4494783863 459 wifi.getc();
samux 1:fb4494783863 460
samux 1:fb4494783863 461 if (!ACK || !strcmp(ACK, "NO")) {
samux 1:fb4494783863 462 for (int i = 0; i < len; i++)
samux 1:fb4494783863 463 result = (putc(str[i]) == str[i]) ? result + 1 : result;
samux 1:fb4494783863 464 } else {
samux 1:fb4494783863 465 //We flush the buffer
samux 1:fb4494783863 466 while (wifi.readable())
samux 1:fb4494783863 467 wifi.getc();
samux 1:fb4494783863 468
samux 1:fb4494783863 469 tmr.start();
samux 1:fb4494783863 470 for (int i = 0; i < len; i++)
samux 1:fb4494783863 471 result = (putc(str[i]) == str[i]) ? result + 1 : result;
samux 1:fb4494783863 472
samux 1:fb4494783863 473 while (1) {
samux 1:fb4494783863 474 if (tmr.read_ms() > timeout) {
samux 1:fb4494783863 475 //We flush the buffer
samux 1:fb4494783863 476 while (wifi.readable())
samux 1:fb4494783863 477 wifi.getc();
samux 1:fb4494783863 478
samux 1:fb4494783863 479 DBG("check: %s\r\n", checking.c_str());
samux 1:fb4494783863 480
samux 1:fb4494783863 481 attach_rx(true);
samux 1:fb4494783863 482 return -1;
samux 1:fb4494783863 483 } else if (wifi.readable()) {
samux 1:fb4494783863 484 read = wifi.getc();
samux 1:fb4494783863 485 if ( read != '\r' && read != '\n') {
samux 1:fb4494783863 486 checking += read;
samux 1:fb4494783863 487 found = checking.find(ACK);
samux 1:fb4494783863 488 if (found != string::npos) {
samux 1:fb4494783863 489 wait(0.01);
samux 1:fb4494783863 490
samux 1:fb4494783863 491 //We flush the buffer
samux 1:fb4494783863 492 while (wifi.readable())
samux 1:fb4494783863 493 wifi.getc();
samux 1:fb4494783863 494
samux 1:fb4494783863 495 break;
samux 1:fb4494783863 496 }
samux 1:fb4494783863 497 }
samux 1:fb4494783863 498 }
samux 1:fb4494783863 499 }
samux 1:fb4494783863 500 DBG("check: %s\r\n", checking.c_str());
samux 1:fb4494783863 501
samux 1:fb4494783863 502 attach_rx(true);
samux 1:fb4494783863 503 return result;
samux 1:fb4494783863 504 }
samux 1:fb4494783863 505
samux 1:fb4494783863 506 //the user wants the result from the command (ACK == NULL, res != NULL)
samux 1:fb4494783863 507 if ( res != NULL) {
samux 1:fb4494783863 508 int i = 0;
samux 1:fb4494783863 509 Timer timeout;
samux 1:fb4494783863 510 timeout.start();
samux 1:fb4494783863 511 tmr.reset();
samux 1:fb4494783863 512 while (1) {
samux 1:fb4494783863 513 if (timeout.read() > 2) {
samux 1:fb4494783863 514 if (i == 0) {
samux 1:fb4494783863 515 res = NULL;
samux 1:fb4494783863 516 break;
samux 1:fb4494783863 517 }
samux 1:fb4494783863 518 res[i] = '\0';
samux 1:fb4494783863 519 DBG("user str 1: %s\r\n", res);
samux 1:fb4494783863 520
samux 1:fb4494783863 521 break;
samux 1:fb4494783863 522 } else {
samux 1:fb4494783863 523 if (tmr.read_ms() > 300) {
samux 1:fb4494783863 524 res[i] = '\0';
samux 1:fb4494783863 525 DBG("user str: %s\r\n", res);
samux 1:fb4494783863 526
samux 1:fb4494783863 527 break;
samux 1:fb4494783863 528 }
samux 1:fb4494783863 529 if (wifi.readable()) {
samux 1:fb4494783863 530 tmr.start();
samux 1:fb4494783863 531 read = wifi.getc();
samux 1:fb4494783863 532
samux 1:fb4494783863 533 // we drop \r and \n
samux 1:fb4494783863 534 if ( read != '\r' && read != '\n') {
samux 1:fb4494783863 535 res[i++] = read;
samux 1:fb4494783863 536 }
samux 1:fb4494783863 537 }
samux 1:fb4494783863 538 }
samux 1:fb4494783863 539 }
samux 1:fb4494783863 540 DBG("user str: %s\r\n", res);
samux 1:fb4494783863 541 }
samux 1:fb4494783863 542
samux 1:fb4494783863 543 //We flush the buffer
samux 1:fb4494783863 544 while (wifi.readable())
samux 1:fb4494783863 545 wifi.getc();
samux 1:fb4494783863 546
samux 1:fb4494783863 547 attach_rx(true);
samux 1:fb4494783863 548 DBG("result: %d\r\n", result)
samux 1:fb4494783863 549 return result;
samux 1:fb4494783863 550 }