Alexander Rao / ESP8266NodeMCUInterface

A fork of the original interface for OS/2. Features a correctly-implemented recv (but retains the old behavior via recv2).

Dependencies:   BufferedSerial

Dependents:   weather_clock weather_clock

ESP8266/ESP8266.cpp@43:2e326d95fe2c, 2015-05-07 (annotated)

Committer:
mbedAustin
Date:
Thu May 07 04:00:27 2015 +0000
Revision:
43:2e326d95fe2c
Parent:
42:3f62103a4f3c 
added warning about sending messages > 2048 bytes

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"
michaeljkoster 13:41098c907200 20 #include "ESP8266.h"
michaeljkoster 16:3f0efaa57a12 21 #include "Endpoint.h"
samux 1:fb4494783863 22 #include <string>
samux 1:fb4494783863 23 #include <algorithm>
samux 1:fb4494783863 24
samux 1:fb4494783863 25 //Debug is disabled by default
mbedAustin 36:e1545c6c2cb3 26 #if 1
mbedAustin 42:3f62103a4f3c 27 #define DBG(x, ...) printf("[ESP8266 : DBG]"x" \t[%s,%d]\r\n", ##__VA_ARGS__,__FILE__,__LINE__);
mbedAustin 42:3f62103a4f3c 28 #define WARN(x, ...) printf("[ESP8266 : WARN]"x" \t[%s,%d]\r\n", ##__VA_ARGS__,__FILE__,__LINE__);
mbedAustin 42:3f62103a4f3c 29 #define ERR(x, ...) printf("[ESP8266 : ERR]"x" \t[%s,%d]\r\n", ##__VA_ARGS__,__FILE__,__LINE__);
samux 1:fb4494783863 30 #else
samux 1:fb4494783863 31 #define DBG(x, ...)
samux 1:fb4494783863 32 #define WARN(x, ...)
samux 1:fb4494783863 33 #define ERR(x, ...)
samux 1:fb4494783863 34 #endif
samux 1:fb4494783863 35
mbedAustin 36:e1545c6c2cb3 36 #if 1
mbedAustin 42:3f62103a4f3c 37 #define INFO(x, ...) printf("[ESP8266 : INFO]"x" \t[%s,%d]\r\n", ##__VA_ARGS__,__FILE__,__LINE__);
samux 1:fb4494783863 38 #else
samux 1:fb4494783863 39 #define INFO(x, ...)
samux 1:fb4494783863 40 #endif
samux 1:fb4494783863 41
mbedAustin 30:c035696b9397 42 #define ESP_MAX_TRY_JOIN 3
mbedAustin 30:c035696b9397 43 #define ESP_MAXID 4 // the largest possible ID Value (max num of sockets possible)
samux 1:fb4494783863 44
michaeljkoster 13:41098c907200 45 ESP8266 * ESP8266::inst;
mbedAustin 29:939372104145 46 char* ip = NULL;
samux 1:fb4494783863 47
sam_grove 40:0a83315aea0a 48 ESP8266::ESP8266(PinName tx, PinName rx, PinName reset, const char *ssid, const char *phrase, uint32_t baud) :
sam_grove 40:0a83315aea0a 49 wifi(tx, rx), reset_pin(reset), buf_ESP8266(ESP_MBUFFE_MAX)
samux 1:fb4494783863 50 {
mbedAustin 36:e1545c6c2cb3 51 INFO("Initializing ESP8266 object");
samux 1:fb4494783863 52 memset(&state, 0, sizeof(state));
samux 1:fb4494783863 53
michaeljkoster 26:0d5bcb3903e2 54 // change all ' ' in '$' in the ssid and the passphrase
samux 1:fb4494783863 55 strcpy(this->ssid, ssid);
samux 1:fb4494783863 56 for (int i = 0; i < strlen(ssid); i++) {
samux 1:fb4494783863 57 if (this->ssid[i] == ' ')
samux 1:fb4494783863 58 this->ssid[i] = '$';
samux 1:fb4494783863 59 }
sam_grove 40:0a83315aea0a 60
samux 1:fb4494783863 61 strcpy(this->phrase, phrase);
samux 1:fb4494783863 62 for (int i = 0; i < strlen(phrase); i++) {
samux 1:fb4494783863 63 if (this->phrase[i] == ' ')
samux 1:fb4494783863 64 this->phrase[i] = '$';
samux 1:fb4494783863 65 }
michaeljkoster 26:0d5bcb3903e2 66
samux 1:fb4494783863 67 inst = this;
samux 1:fb4494783863 68 attach_rx(false);
mbedAustin 28:91e65e22e63a 69
mbedAustin 28:91e65e22e63a 70 wifi.baud(baud); // initial baud rate of the ESP8266
mbedAustin 28:91e65e22e63a 71
michaeljkoster 22:c4360e61486a 72 state.associated = false;
michaeljkoster 22:c4360e61486a 73 state.cmdMode = false;
samux 1:fb4494783863 74 }
samux 1:fb4494783863 75
michaeljkoster 13:41098c907200 76 bool ESP8266::join()
samux 1:fb4494783863 77 {
michaeljkoster 23:de9221771e96 78 sendCommand( "AT+CWMODE=1", "change", NULL, 1000);
michaeljkoster 16:3f0efaa57a12 79 string cmd="AT+CWJAP=\""+(string)this->ssid+"\",\""+(string)this->phrase+"\"";
mbedAustin 28:91e65e22e63a 80 if( sendCommand( cmd.c_str(), "OK", NULL, 10000) ) {
michaeljkoster 16:3f0efaa57a12 81 // successfully joined the network
samux 1:fb4494783863 82 state.associated = true;
mbedAustin 37:6887e61cf674 83 INFO("ssid: %s, phrase: %s", this->ssid, this->phrase);
samux 1:fb4494783863 84 return true;
samux 1:fb4494783863 85 }
samux 1:fb4494783863 86 return false;
samux 1:fb4494783863 87 }
samux 1:fb4494783863 88
michaeljkoster 13:41098c907200 89 bool ESP8266::connect()
samux 1:fb4494783863 90 {
mbedAustin 28:91e65e22e63a 91 sendCommand("AT+CWDHCP=1,1","OK",NULL,1000); // DHCP Enabled in Station Mode
mbedAustin 28:91e65e22e63a 92 return ESP8266::join();
samux 1:fb4494783863 93 }
samux 1:fb4494783863 94
michaeljkoster 15:37a7a56a424f 95 bool ESP8266::is_connected()
michaeljkoster 15:37a7a56a424f 96 {
michaeljkoster 15:37a7a56a424f 97 return true;
michaeljkoster 15:37a7a56a424f 98 }
michaeljkoster 15:37a7a56a424f 99
mbedAustin 30:c035696b9397 100 bool ESP8266::start(bool type,char* ip, int port, int id)
mbedAustin 30:c035696b9397 101 {
mbedAustin 30:c035696b9397 102 // Error Check
mbedAustin 30:c035696b9397 103 if(id > ESP_MAXID) {
mbedAustin 30:c035696b9397 104 ERR("startUDPMulti: max id is: %d, id given is %d",ESP_MAXID,id);
mbedAustin 30:c035696b9397 105 return false;
mbedAustin 30:c035696b9397 106 }
mbedAustin 30:c035696b9397 107 // Single Connection Mode
mbedAustin 30:c035696b9397 108 if(id < 0) {
mbedAustin 30:c035696b9397 109 DBG("Start Single Connection Mode");
mbedAustin 30:c035696b9397 110 char portstr[5];
mbedAustin 30:c035696b9397 111 char idstr[2];
mbedAustin 30:c035696b9397 112 bool check [3] = {0};
mbedAustin 30:c035696b9397 113 sprintf(idstr,"%d",id);
mbedAustin 30:c035696b9397 114 sprintf(portstr, "%d", port);
mbedAustin 30:c035696b9397 115 switch(type) {
mbedAustin 30:c035696b9397 116 case ESP_UDP_TYPE : //UDP
mbedAustin 32:cf071dc33972 117 check[0] = sendCommand(( "AT+CIPSTART=\"UDP\",\"" + (string) ip + "\"," + (string) portstr ).c_str(), "OK", NULL, 10000);
mbedAustin 30:c035696b9397 118 break;
mbedAustin 30:c035696b9397 119 case ESP_TCP_TYPE : //TCP
mbedAustin 32:cf071dc33972 120 check[0] = sendCommand(( "AT+CIPSTART=\"TCP\",\"" + (string) ip + "\"," + (string) portstr ).c_str(), "OK", NULL, 10000);
mbedAustin 30:c035696b9397 121 break;
mbedAustin 30:c035696b9397 122 default:
mbedAustin 30:c035696b9397 123 ERR("Default hit for starting connection, this shouldnt be possible!!");
mbedAustin 30:c035696b9397 124 break;
mbedAustin 30:c035696b9397 125 }
mbedAustin 30:c035696b9397 126 check[1] = sendCommand("AT+CIPMODE=1", "OK", NULL, 1000);// go into transparent mode
mbedAustin 30:c035696b9397 127 check[2] = sendCommand("AT+CIPSEND", ">", NULL, 1000);// go into transparent mode
mbedAustin 30:c035696b9397 128 // check that all commands were sucessful
mbedAustin 32:cf071dc33972 129 if(check[0] and check[1] and check[2]) {
mbedAustin 30:c035696b9397 130 state.cmdMode = false;
mbedAustin 30:c035696b9397 131 return true;
mbedAustin 30:c035696b9397 132 } else {
mbedAustin 36:e1545c6c2cb3 133 ERR("startUDPTransparent Failed for ip:%s, port:%d",ip,port);
mbedAustin 30:c035696b9397 134 return false;
mbedAustin 30:c035696b9397 135 }
mbedAustin 30:c035696b9397 136 }
mbedAustin 30:c035696b9397 137 // Multi Connection Mode
mbedAustin 30:c035696b9397 138 else {
mbedAustin 30:c035696b9397 139 //TODO: impliment Multi Connection Mode
mbedAustin 30:c035696b9397 140 ERR("Not currently Supported!");
mbedAustin 30:c035696b9397 141 return false;
mbedAustin 32:cf071dc33972 142
mbedAustin 32:cf071dc33972 143 // DBG("Start Multi Connection Mode");
mbedAustin 32:cf071dc33972 144 // char portstr[5];
mbedAustin 32:cf071dc33972 145 // char idstr[2];
mbedAustin 32:cf071dc33972 146 // bool check [3] = {0};
mbedAustin 32:cf071dc33972 147 // sprintf(idstr,"%d",id);
mbedAustin 32:cf071dc33972 148 // sprintf(portstr, "%d", port);
mbedAustin 32:cf071dc33972 149 // switch(type) {
mbedAustin 32:cf071dc33972 150 // case ESP_UDP_TYPE : //UDP
mbedAustin 32:cf071dc33972 151 // check[0] = sendCommand(( "AT+CIPSTART=" + (string) idstr + ",\"UDP\",\"" + (string) ip + "\"," + (string) portstr ).c_str(), "OK", NULL, 10000);
mbedAustin 32:cf071dc33972 152 // break;
mbedAustin 32:cf071dc33972 153 // case ESP_TCP_TYPE : //TCP
mbedAustin 32:cf071dc33972 154 // check[0] = sendCommand(( "AT+CIPSTART=" + (string) idstr + ",\"TCP\",\"" + (string) ip + "\"," + (string) portstr ).c_str(), "OK", NULL, 10000);
mbedAustin 32:cf071dc33972 155 // break;
mbedAustin 32:cf071dc33972 156 // default:
mbedAustin 32:cf071dc33972 157 // ERR("Default hit for starting connection, this shouldnt be possible!!");
mbedAustin 32:cf071dc33972 158 // break;
mbedAustin 32:cf071dc33972 159 // }
mbedAustin 30:c035696b9397 160 }
mbedAustin 30:c035696b9397 161 }
mbedAustin 30:c035696b9397 162
mbedAustin 28:91e65e22e63a 163 bool ESP8266::startUDP(char* ip, int port)
mbedAustin 28:91e65e22e63a 164 {
michaeljkoster 17:d11fa4c3ac65 165 char portstr[5];
michaeljkoster 16:3f0efaa57a12 166 sprintf(portstr, "%d", port);
michaeljkoster 18:60422852e99c 167 sendCommand(( "AT+CIPSTART=\"UDP\",\"" + (string) ip + "\"," + (string) portstr ).c_str(), "OK", NULL, 10000);
mbedAustin 28:91e65e22e63a 168 sendCommand("AT+CIPMODE=1", "OK", NULL, 1000);// go into transparent mode
mbedAustin 28:91e65e22e63a 169 sendCommand("AT+CIPSEND", ">", NULL, 1000);// go into transparent mode
mbedAustin 38:86e75901efc1 170 //DBG("Data Mode");
michaeljkoster 22:c4360e61486a 171 state.cmdMode = false;
mbedAustin 28:91e65e22e63a 172
michaeljkoster 16:3f0efaa57a12 173 return true;
michaeljkoster 16:3f0efaa57a12 174 }
michaeljkoster 16:3f0efaa57a12 175
michaeljkoster 15:37a7a56a424f 176 bool ESP8266::close()
michaeljkoster 15:37a7a56a424f 177 {
sam_grove 40:0a83315aea0a 178 wait(0.1f);
michaeljkoster 17:d11fa4c3ac65 179 send("+++",3);
sam_grove 40:0a83315aea0a 180 wait(1.0f);
michaeljkoster 22:c4360e61486a 181 state.cmdMode = true;
michaeljkoster 16:3f0efaa57a12 182 sendCommand("AT+CIPCLOSE","OK", NULL, 10000);
michaeljkoster 15:37a7a56a424f 183 return true;
michaeljkoster 15:37a7a56a424f 184 }
michaeljkoster 15:37a7a56a424f 185
michaeljkoster 15:37a7a56a424f 186 bool ESP8266::disconnect()
michaeljkoster 15:37a7a56a424f 187 {
michaeljkoster 15:37a7a56a424f 188 // if already disconnected, return
michaeljkoster 15:37a7a56a424f 189 if (!state.associated)
michaeljkoster 15:37a7a56a424f 190 return true;
michaeljkoster 15:37a7a56a424f 191 // send command to quit AP
mbedAustin 28:91e65e22e63a 192 sendCommand("AT+CWQAP", "OK", NULL, 10000);
michaeljkoster 15:37a7a56a424f 193 state.associated = false;
michaeljkoster 15:37a7a56a424f 194 return true;
michaeljkoster 15:37a7a56a424f 195 }
michaeljkoster 15:37a7a56a424f 196
mbedAustin 28:91e65e22e63a 197 /*
mbedAustin 28:91e65e22e63a 198 Assuming Returned data looks like this:
mbedAustin 28:91e65e22e63a 199 +CIFSR:STAIP,"192.168.11.2"
mbedAustin 28:91e65e22e63a 200 +CIFSR:STAMAC,"18:fe:34:9f:3a:f5"
mbedAustin 28:91e65e22e63a 201 grabbing IP from first set of quotation marks
mbedAustin 28:91e65e22e63a 202 */
michaeljkoster 15:37a7a56a424f 203 char* ESP8266::getIPAddress()
michaeljkoster 15:37a7a56a424f 204 {
mbedAustin 28:91e65e22e63a 205 char result[30] = {0};
mbedAustin 28:91e65e22e63a 206 int check = 0;
mbedAustin 28:91e65e22e63a 207 check = sendCommand("AT+CIFSR", NULL, result, 1000);
mbedAustin 29:939372104145 208 //pc.printf("\r\nReceivedInfo for IP Command is: %s\r\n",result);
mbedAustin 29:939372104145 209 ip = ipString;
mbedAustin 29:939372104145 210 if(check) {
mbedAustin 28:91e65e22e63a 211 // Success
mbedAustin 28:91e65e22e63a 212 string resultString(result);
mbedAustin 28:91e65e22e63a 213 uint8_t pos1 = 0, pos2 = 0;
mbedAustin 28:91e65e22e63a 214 //uint8_t pos3 = 0, pos4 = 0;
mbedAustin 28:91e65e22e63a 215 pos1 = resultString.find("+CIFSR:STAIP");
mbedAustin 28:91e65e22e63a 216 pos1 = resultString.find('"',pos1);
mbedAustin 28:91e65e22e63a 217 pos2 = resultString.find('"',pos1+1);
mbedAustin 28:91e65e22e63a 218 //pos3 = resultString.find('"',pos2+1); //would find mac address
mbedAustin 28:91e65e22e63a 219 //pos4 = resultString.find('"',pos3+1);
mbedAustin 28:91e65e22e63a 220 strncpy(ipString,resultString.substr(pos1,pos2).c_str(),sizeof(ipString));
mbedAustin 28:91e65e22e63a 221 ipString[pos2 - pos1 +1] = 0; // null terminate string correctly.
mbedAustin 42:3f62103a4f3c 222 INFO("IP: %s",ipString);
mbedAustin 29:939372104145 223 ip = ipString;
mbedAustin 29:939372104145 224
mbedAustin 29:939372104145 225 } else {
mbedAustin 28:91e65e22e63a 226 // Failure
mbedAustin 41:264902b160ea 227 ERR("getIPAddress() failed");
mbedAustin 29:939372104145 228 ip = NULL;
mbedAustin 28:91e65e22e63a 229 }
mbedAustin 29:939372104145 230 return ip;
michaeljkoster 15:37a7a56a424f 231 }
michaeljkoster 15:37a7a56a424f 232
michaeljkoster 13:41098c907200 233 bool ESP8266::gethostbyname(const char * host, char * ip)
samux 1:fb4494783863 234 {
samux 1:fb4494783863 235 string h = host;
samux 1:fb4494783863 236 int nb_digits = 0;
samux 1:fb4494783863 237
samux 1:fb4494783863 238 // no dns needed
samux 1:fb4494783863 239 int pos = h.find(".");
samux 1:fb4494783863 240 if (pos != string::npos) {
samux 1:fb4494783863 241 string sub = h.substr(0, h.find("."));
samux 1:fb4494783863 242 nb_digits = atoi(sub.c_str());
samux 1:fb4494783863 243 }
samux 1:fb4494783863 244 //printf("substrL %s\r\n", sub.c_str());
samux 1:fb4494783863 245 if (count(h.begin(), h.end(), '.') == 3 && nb_digits > 0) {
samux 1:fb4494783863 246 strcpy(ip, host);
michaeljkoster 13:41098c907200 247 return true;
mbedAustin 28:91e65e22e63a 248 } else {
michaeljkoster 13:41098c907200 249 // dns needed, not currently available
mbedAustin 30:c035696b9397 250 ERR("gethostbyname(): DNS Not currently available, only use IP Addresses!");
michaeljkoster 13:41098c907200 251 return false;
michaeljkoster 13:41098c907200 252 }
michaeljkoster 13:41098c907200 253 }
samux 1:fb4494783863 254
michaeljkoster 13:41098c907200 255 void ESP8266::reset()
samux 1:fb4494783863 256 {
samux 1:fb4494783863 257 reset_pin = 0;
sam_grove 40:0a83315aea0a 258 wait_us(20);
samux 1:fb4494783863 259 reset_pin = 1;
sam_grove 40:0a83315aea0a 260 //wait(1);
mbedAustin 28:91e65e22e63a 261
michaeljkoster 24:03585a13ff3b 262 //send("+++",3);
michaeljkoster 24:03585a13ff3b 263 //wait(1);
michaeljkoster 24:03585a13ff3b 264 state.cmdMode = true;
michaeljkoster 24:03585a13ff3b 265 sendCommand("AT", "OK", NULL, 1000);
mbedAustin 28:91e65e22e63a 266 sendCommand("AT+RST", "ready", NULL, 10000);
michaeljkoster 24:03585a13ff3b 267 state.associated = false;
michaeljkoster 24:03585a13ff3b 268
samux 1:fb4494783863 269 }
samux 1:fb4494783863 270
michaeljkoster 13:41098c907200 271 bool ESP8266::reboot()
samux 3:9aa05e19c62e 272 {
michaeljkoster 16:3f0efaa57a12 273 reset();
samux 3:9aa05e19c62e 274 return true;
samux 3:9aa05e19c62e 275 }
samux 3:9aa05e19c62e 276
michaeljkoster 15:37a7a56a424f 277 void ESP8266::handler_rx(void)
samux 1:fb4494783863 278 {
michaeljkoster 15:37a7a56a424f 279 //read characters
michaeljkoster 16:3f0efaa57a12 280 char c;
mbedAustin 28:91e65e22e63a 281 while (wifi.readable()) {
michaeljkoster 16:3f0efaa57a12 282 c=wifi.getc();
michaeljkoster 16:3f0efaa57a12 283 buf_ESP8266.queue(c);
michaeljkoster 26:0d5bcb3903e2 284 //if (state.cmdMode) pc.printf("%c",c); //debug echo, needs fast serial console to prevent UART overruns
michaeljkoster 16:3f0efaa57a12 285 }
michaeljkoster 15:37a7a56a424f 286 }
michaeljkoster 15:37a7a56a424f 287
michaeljkoster 15:37a7a56a424f 288 void ESP8266::attach_rx(bool callback)
michaeljkoster 15:37a7a56a424f 289 {
sam_grove 40:0a83315aea0a 290 if (!callback) {
michaeljkoster 15:37a7a56a424f 291 wifi.attach(NULL);
sam_grove 40:0a83315aea0a 292 }
sam_grove 40:0a83315aea0a 293 else {
michaeljkoster 15:37a7a56a424f 294 wifi.attach(this, &ESP8266::handler_rx);
sam_grove 40:0a83315aea0a 295 }
samux 1:fb4494783863 296 }
samux 1:fb4494783863 297
michaeljkoster 13:41098c907200 298 int ESP8266::readable()
samux 1:fb4494783863 299 {
michaeljkoster 13:41098c907200 300 return buf_ESP8266.available();
samux 1:fb4494783863 301 }
samux 1:fb4494783863 302
michaeljkoster 13:41098c907200 303 int ESP8266::writeable()
samux 1:fb4494783863 304 {
samux 1:fb4494783863 305 return wifi.writeable();
samux 1:fb4494783863 306 }
samux 1:fb4494783863 307
michaeljkoster 13:41098c907200 308 char ESP8266::getc()
samux 1:fb4494783863 309 {
michaeljkoster 14:4d1128f72e00 310 char c=0;
michaeljkoster 13:41098c907200 311 while (!buf_ESP8266.available());
michaeljkoster 13:41098c907200 312 buf_ESP8266.dequeue(&c);
samux 1:fb4494783863 313 return c;
samux 1:fb4494783863 314 }
samux 1:fb4494783863 315
michaeljkoster 15:37a7a56a424f 316 int ESP8266::putc(char c)
samux 1:fb4494783863 317 {
michaeljkoster 20:d764237405c2 318 while (!wifi.writeable() || wifi.readable()); //wait for echoed command characters to be read first
michaeljkoster 15:37a7a56a424f 319 return wifi.putc(c);
samux 1:fb4494783863 320 }
samux 1:fb4494783863 321
michaeljkoster 15:37a7a56a424f 322 void ESP8266::flush()
samux 1:fb4494783863 323 {
michaeljkoster 15:37a7a56a424f 324 buf_ESP8266.flush();
samux 1:fb4494783863 325 }
samux 1:fb4494783863 326
michaeljkoster 16:3f0efaa57a12 327 int ESP8266::send(const char * buf, int len)
michaeljkoster 15:37a7a56a424f 328 {
mbedAustin 32:cf071dc33972 329 //TODO: need to add handler for data > 2048B, this is the max packet size of the ESP8266.
mbedAustin 43:2e326d95fe2c 330 if(len >= 2048){
mbedAustin 43:2e326d95fe2c 331 WARN("send buffer >= 2048B, need to chunk this up to be less.");
mbedAustin 43:2e326d95fe2c 332 }
michaeljkoster 16:3f0efaa57a12 333 const char* bufptr=buf;
mbedAustin 28:91e65e22e63a 334 for(int i=0; i<len; i++) {
michaeljkoster 17:d11fa4c3ac65 335 putc((int)*bufptr++);
michaeljkoster 18:60422852e99c 336 }
michaeljkoster 19:fb8d5bff2076 337 return len;
michaeljkoster 15:37a7a56a424f 338 }
samux 1:fb4494783863 339
michaeljkoster 16:3f0efaa57a12 340 bool ESP8266::sendCommand(const char * cmd, const char * ACK, char * res, int timeout)
samux 1:fb4494783863 341 {
samux 1:fb4494783863 342 char read;
samux 1:fb4494783863 343 size_t found = string::npos;
sam_grove 40:0a83315aea0a 344 string checking = "";
samux 1:fb4494783863 345 Timer tmr;
samux 1:fb4494783863 346 int result = 0;
samux 1:fb4494783863 347
mbedAustin 42:3f62103a4f3c 348 DBG("sendCmd:\t %s",cmd);
samux 1:fb4494783863 349
michaeljkoster 17:d11fa4c3ac65 350 attach_rx(true);
samux 1:fb4494783863 351
samux 1:fb4494783863 352 //We flush the buffer
michaeljkoster 17:d11fa4c3ac65 353 while (readable())
michaeljkoster 17:d11fa4c3ac65 354 getc();
mbedAustin 28:91e65e22e63a 355
samux 1:fb4494783863 356 if (!ACK || !strcmp(ACK, "NO")) {
mbedAustin 28:91e65e22e63a 357 for (int i = 0; i < strlen(cmd); i++) {
michaeljkoster 16:3f0efaa57a12 358 result = (putc(cmd[i]) == cmd[i]) ? result + 1 : result;
sam_grove 40:0a83315aea0a 359 wait(0.005f); // prevents stuck recieve ready (?) need to let echoed character get read first
michaeljkoster 16:3f0efaa57a12 360 }
michaeljkoster 16:3f0efaa57a12 361 putc(13); //CR
sam_grove 40:0a83315aea0a 362 wait(0.005f); // wait for echo
michaeljkoster 16:3f0efaa57a12 363 putc(10); //LF
michaeljkoster 16:3f0efaa57a12 364
samux 1:fb4494783863 365 } else {
samux 1:fb4494783863 366 //We flush the buffer
michaeljkoster 17:d11fa4c3ac65 367 while (readable())
michaeljkoster 17:d11fa4c3ac65 368 getc();
samux 1:fb4494783863 369
samux 1:fb4494783863 370 tmr.start();
mbedAustin 28:91e65e22e63a 371 for (int i = 0; i < strlen(cmd); i++) {
michaeljkoster 16:3f0efaa57a12 372 result = (putc(cmd[i]) == cmd[i]) ? result + 1 : result;
michaeljkoster 20:d764237405c2 373 wait(.005); // wait for echo
michaeljkoster 16:3f0efaa57a12 374 }
michaeljkoster 16:3f0efaa57a12 375 putc(13); //CR
sam_grove 40:0a83315aea0a 376 wait(0.005f); // wait for echo
michaeljkoster 16:3f0efaa57a12 377 putc(10); //LF
samux 1:fb4494783863 378
samux 1:fb4494783863 379 while (1) {
samux 1:fb4494783863 380 if (tmr.read_ms() > timeout) {
samux 1:fb4494783863 381 //We flush the buffer
michaeljkoster 17:d11fa4c3ac65 382 while (readable())
michaeljkoster 17:d11fa4c3ac65 383 getc();
samux 1:fb4494783863 384
mbedAustin 42:3f62103a4f3c 385 DBG("check:\t %s", checking.c_str());
samux 1:fb4494783863 386
samux 1:fb4494783863 387 attach_rx(true);
samux 1:fb4494783863 388 return -1;
michaeljkoster 17:d11fa4c3ac65 389 } else if (readable()) {
michaeljkoster 17:d11fa4c3ac65 390 read = getc();
sam_grove 40:0a83315aea0a 391 //printf("%c",read); //debug echo
samux 1:fb4494783863 392 if ( read != '\r' && read != '\n') {
samux 1:fb4494783863 393 checking += read;
samux 1:fb4494783863 394 found = checking.find(ACK);
samux 1:fb4494783863 395 if (found != string::npos) {
sam_grove 40:0a83315aea0a 396 wait(0.01f);
samux 1:fb4494783863 397
samux 1:fb4494783863 398 //We flush the buffer
michaeljkoster 17:d11fa4c3ac65 399 while (readable())
michaeljkoster 26:0d5bcb3903e2 400 read = getc();
sam_grove 40:0a83315aea0a 401 //printf("%c",read); //debug echo
samux 1:fb4494783863 402 break;
samux 1:fb4494783863 403 }
samux 1:fb4494783863 404 }
samux 1:fb4494783863 405 }
samux 1:fb4494783863 406 }
mbedAustin 36:e1545c6c2cb3 407 DBG("check: %s", checking.c_str());
samux 1:fb4494783863 408
samux 1:fb4494783863 409 attach_rx(true);
samux 1:fb4494783863 410 return result;
samux 1:fb4494783863 411 }
samux 1:fb4494783863 412
samux 1:fb4494783863 413 //the user wants the result from the command (ACK == NULL, res != NULL)
samux 1:fb4494783863 414 if ( res != NULL) {
samux 1:fb4494783863 415 int i = 0;
samux 1:fb4494783863 416 Timer timeout;
samux 1:fb4494783863 417 timeout.start();
samux 1:fb4494783863 418 tmr.reset();
samux 1:fb4494783863 419 while (1) {
samux 1:fb4494783863 420 if (timeout.read() > 2) {
samux 1:fb4494783863 421 if (i == 0) {
samux 1:fb4494783863 422 res = NULL;
samux 1:fb4494783863 423 break;
samux 1:fb4494783863 424 }
samux 1:fb4494783863 425 res[i] = '\0';
mbedAustin 36:e1545c6c2cb3 426 DBG("user str 1: %s", res);
samux 1:fb4494783863 427
samux 1:fb4494783863 428 break;
samux 1:fb4494783863 429 } else {
samux 1:fb4494783863 430 if (tmr.read_ms() > 300) {
samux 1:fb4494783863 431 res[i] = '\0';
mbedAustin 36:e1545c6c2cb3 432 DBG("user str: %s", res);
samux 1:fb4494783863 433
samux 1:fb4494783863 434 break;
samux 1:fb4494783863 435 }
michaeljkoster 17:d11fa4c3ac65 436 if (readable()) {
samux 1:fb4494783863 437 tmr.start();
michaeljkoster 17:d11fa4c3ac65 438 read = getc();
samux 1:fb4494783863 439
samux 1:fb4494783863 440 // we drop \r and \n
samux 1:fb4494783863 441 if ( read != '\r' && read != '\n') {
samux 1:fb4494783863 442 res[i++] = read;
samux 1:fb4494783863 443 }
samux 1:fb4494783863 444 }
samux 1:fb4494783863 445 }
samux 1:fb4494783863 446 }
mbedAustin 36:e1545c6c2cb3 447 DBG("user str: %s", res);
samux 1:fb4494783863 448 }
samux 1:fb4494783863 449
samux 1:fb4494783863 450 //We flush the buffer
michaeljkoster 17:d11fa4c3ac65 451 while (readable())
michaeljkoster 17:d11fa4c3ac65 452 getc();
samux 1:fb4494783863 453
samux 1:fb4494783863 454 attach_rx(true);
mbedAustin 36:e1545c6c2cb3 455 DBG("result: %d", result)
samux 1:fb4494783863 456 return result;
michaeljkoster 15:37a7a56a424f 457 }