MultiTech / MTS-Cellular

Cellular library for MTS Socket Modem Arduino Shield devices from Multi-Tech Systems

Dependents:   mtsas mtsas mtsas mtsas

Cellular/EasyIP.cpp@67:7c705fe2acec, 2014-10-21 (annotated)

Committer:
Vanger
Date:
Tue Oct 21 21:06:53 2014 +0000
Revision:
67:7c705fe2acec
Parent:
66:8c55e2bf7270
Child:
69:93dace69ee98
Fixed close() variables to match Mbed socket API (shutdown instead of clearBuffer)

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Vanger 26:2b769ed8de4f 1 #include "mbed.h"
Vanger 26:2b769ed8de4f 2 #include "EasyIP.h"
Vanger 26:2b769ed8de4f 3 #include "MTSText.h"
Vanger 26:2b769ed8de4f 4 #include "MTSLog.h"
Vanger 26:2b769ed8de4f 5 #include "CellUtils.h"
Vanger 26:2b769ed8de4f 6
Vanger 26:2b769ed8de4f 7 using namespace mts;
Vanger 26:2b769ed8de4f 8
Vanger 26:2b769ed8de4f 9 EasyIP::EasyIP(Radio type)
Vanger 26:2b769ed8de4f 10 {
Vanger 26:2b769ed8de4f 11 this->type = type;
Vanger 26:2b769ed8de4f 12 io = NULL;
Vanger 26:2b769ed8de4f 13 dcd = NULL;
Vanger 26:2b769ed8de4f 14 dtr = NULL;
Vanger 26:2b769ed8de4f 15 resetLine = NULL;
Vanger 26:2b769ed8de4f 16 echoMode = true;
Vanger 26:2b769ed8de4f 17 pppConnected = false;
Vanger 26:2b769ed8de4f 18 socketMode = TCP;
Vanger 26:2b769ed8de4f 19 socketOpened = false;
Vanger 26:2b769ed8de4f 20 socketCloseable = true;
Vanger 26:2b769ed8de4f 21 local_port = 0;
Vanger 26:2b769ed8de4f 22 local_address = "";
Vanger 26:2b769ed8de4f 23 host_port = 0;
Vanger 26:2b769ed8de4f 24 }
Vanger 26:2b769ed8de4f 25
Vanger 26:2b769ed8de4f 26 EasyIP::~EasyIP()
Vanger 26:2b769ed8de4f 27 {
Vanger 26:2b769ed8de4f 28 if (dtr != NULL) {
Vanger 26:2b769ed8de4f 29 dtr->write(1);
Vanger 26:2b769ed8de4f 30 }
Vanger 26:2b769ed8de4f 31
Vanger 26:2b769ed8de4f 32 delete dcd;
Vanger 26:2b769ed8de4f 33 delete dtr;
Vanger 26:2b769ed8de4f 34 delete resetLine;
Vanger 26:2b769ed8de4f 35 }
Vanger 26:2b769ed8de4f 36
Vanger 26:2b769ed8de4f 37 //Initializes the MTS IO Buffer
Vanger 26:2b769ed8de4f 38 bool EasyIP::init(MTSBufferedIO* io)
Vanger 26:2b769ed8de4f 39 {
Vanger 26:2b769ed8de4f 40 if (! Cellular::init(io)) {
Vanger 26:2b769ed8de4f 41 return false;
Vanger 26:2b769ed8de4f 42 }
Vanger 26:2b769ed8de4f 43
Vanger 26:2b769ed8de4f 44 logDebug("radio type: %s", Cellular::getRadioNames(type).c_str());
Vanger 49:1fc51c53cebf 45 //Turns on the HW flow control
Vanger 56:43205bd2752a 46 if(sendBasicCommand("AT+IFC=2,2", 2000) != MTS_SUCCESS) {
Vanger 52:2cb58398a4f9 47 logWarning("Failed to enable serial flow control");
Vanger 35:257eb41405e1 48 }
Vanger 26:2b769ed8de4f 49 return true;
Vanger 26:2b769ed8de4f 50 }
Vanger 26:2b769ed8de4f 51
Vanger 26:2b769ed8de4f 52 bool EasyIP::connect()
Vanger 26:2b769ed8de4f 53 {
Vanger 33:3b6f3904dde0 54 //Check if APN is not set, if it is not, connect will not work.
Vanger 29:edc613ed3f2e 55 if (type == MTSMC_H5_IP || type == MTSMC_H5 || type == MTSMC_G3) {
Vanger 29:edc613ed3f2e 56 if(apn.size() == 0) {
Vanger 29:edc613ed3f2e 57 logDebug("APN is not set");
Vanger 29:edc613ed3f2e 58 return false;
Vanger 29:edc613ed3f2e 59 }
Vanger 29:edc613ed3f2e 60 }
Vanger 29:edc613ed3f2e 61
Vanger 26:2b769ed8de4f 62 //Check if socket is open
Vanger 26:2b769ed8de4f 63 if(socketOpened) {
Vanger 26:2b769ed8de4f 64 return true;
Vanger 26:2b769ed8de4f 65 }
Vanger 26:2b769ed8de4f 66
Vanger 26:2b769ed8de4f 67 //Check if already connected
Vanger 26:2b769ed8de4f 68 if(isConnected()) {
Vanger 26:2b769ed8de4f 69 return true;
Vanger 26:2b769ed8de4f 70 }
Vanger 51:ffc556ba33f7 71
Vanger 26:2b769ed8de4f 72 Timer tmr;
Vanger 26:2b769ed8de4f 73 //Check Registration: AT+CREG? == 0,1
Vanger 26:2b769ed8de4f 74 tmr.start();
Vanger 26:2b769ed8de4f 75 do {
Vanger 26:2b769ed8de4f 76 Registration registration = getRegistration();
Vanger 56:43205bd2752a 77 if(registration != REGISTERED && registration != ROAMING) {
Vanger 26:2b769ed8de4f 78 logTrace("Not Registered [%d] ... waiting", (int)registration);
Vanger 26:2b769ed8de4f 79 wait(1);
Vanger 26:2b769ed8de4f 80 } else {
Vanger 26:2b769ed8de4f 81 break;
Vanger 26:2b769ed8de4f 82 }
Vanger 30:1326b623919a 83 } while(tmr.read() < 30);
Vanger 51:ffc556ba33f7 84
Vanger 26:2b769ed8de4f 85 //Check RSSI: AT+CSQ
Vanger 26:2b769ed8de4f 86 tmr.reset();
Vanger 26:2b769ed8de4f 87 do {
Vanger 26:2b769ed8de4f 88 int rssi = getSignalStrength();
Vanger 26:2b769ed8de4f 89 logDebug("Signal strength: %d", rssi);
Vanger 51:ffc556ba33f7 90 if(rssi == 99 || rssi == -1) {
Vanger 26:2b769ed8de4f 91 logTrace("No Signal ... waiting");
Vanger 26:2b769ed8de4f 92 wait(1);
Vanger 26:2b769ed8de4f 93 } else {
Vanger 26:2b769ed8de4f 94 break;
Vanger 26:2b769ed8de4f 95 }
Vanger 26:2b769ed8de4f 96 } while(tmr.read() < 30);
Vanger 26:2b769ed8de4f 97
Vanger 52:2cb58398a4f9 98 //Make PPP connection
Vanger 26:2b769ed8de4f 99 if (type == MTSMC_H5 || type == MTSMC_G3) {
Vanger 26:2b769ed8de4f 100 logDebug("Making PPP Connection Attempt. APN[%s]", apn.c_str());
Vanger 26:2b769ed8de4f 101 } else {
Vanger 26:2b769ed8de4f 102 logDebug("Making PPP Connection Attempt");
Vanger 26:2b769ed8de4f 103 }
Vanger 59:5535f14e3cc4 104 std::string pppResult = sendCommand("AT#SGACT=1,1", 15000);
Vanger 30:1326b623919a 105 std::vector<std::string> parts;
Vanger 26:2b769ed8de4f 106 if(pppResult.find("OK") != std::string::npos) {
Vanger 30:1326b623919a 107 parts = Text::split(pppResult, "\r\n");
Vanger 26:2b769ed8de4f 108 if(parts.size() >= 2) {
Vanger 26:2b769ed8de4f 109 parts = Text::split(parts[1], " ");
Vanger 26:2b769ed8de4f 110 local_address = parts[1];
Vanger 26:2b769ed8de4f 111 }
Vanger 26:2b769ed8de4f 112 logInfo("PPP Connection Established: IP[%s]", local_address.c_str());
Vanger 26:2b769ed8de4f 113 pppConnected = true;
Vanger 26:2b769ed8de4f 114
Vanger 26:2b769ed8de4f 115 } else {
Vanger 30:1326b623919a 116 pppResult = sendCommand("AT#SGACT?", 2000);
Vanger 52:2cb58398a4f9 117 if(pppResult.find("1,1") != std::string::npos) {
Vanger 52:2cb58398a4f9 118 logDebug("Radio is already connected");
Vanger 52:2cb58398a4f9 119 pppConnected = true;
Vanger 30:1326b623919a 120 } else {
Vanger 52:2cb58398a4f9 121 logError("PPP connection attempt failed");
Vanger 52:2cb58398a4f9 122 pppConnected = false;
Vanger 30:1326b623919a 123 }
Vanger 26:2b769ed8de4f 124 }
Vanger 26:2b769ed8de4f 125
Vanger 26:2b769ed8de4f 126 return pppConnected;
Vanger 26:2b769ed8de4f 127 }
Vanger 26:2b769ed8de4f 128
Vanger 26:2b769ed8de4f 129 void EasyIP::disconnect()
Vanger 26:2b769ed8de4f 130 {
Vanger 52:2cb58398a4f9 131 //AT#SGACT=1,0: Close PPP connection
Vanger 52:2cb58398a4f9 132 logDebug("Closing PPP Connection");
Vanger 35:257eb41405e1 133 std::string result;
Vanger 35:257eb41405e1 134 Timer tmr;
Vanger 52:2cb58398a4f9 135
Vanger 52:2cb58398a4f9 136 if(socketOpened) {
Vanger 66:8c55e2bf7270 137 close(true);
Vanger 52:2cb58398a4f9 138 }
Vanger 52:2cb58398a4f9 139
Vanger 26:2b769ed8de4f 140 //Sends AT#SGACT=1,0 command
Vanger 54:a6c738bfc391 141 for (int y = 0; y < 5; y++) {
Vanger 54:a6c738bfc391 142 Code code = sendBasicCommand("AT#SGACT=1,0", 1000);
Vanger 54:a6c738bfc391 143 if (code == MTS_SUCCESS) {
Vanger 54:a6c738bfc391 144 logDebug("Successfully closed PPP Connection");
Vanger 54:a6c738bfc391 145 break;
Vanger 54:a6c738bfc391 146 }
Vanger 30:1326b623919a 147 }
Vanger 35:257eb41405e1 148
Vanger 52:2cb58398a4f9 149 /* Ensure PPP link is down, else ping commands will put radio in unknown state
Vanger 52:2cb58398a4f9 150 * (Link is not immediate in disconnection, even though OK is returned)
Vanger 51:ffc556ba33f7 151 */
Vanger 35:257eb41405e1 152 tmr.start();
Vanger 35:257eb41405e1 153 while(tmr.read() < 30) {
Vanger 35:257eb41405e1 154 result = sendCommand("AT#SGACT?", 1000);
Vanger 35:257eb41405e1 155 if(result.find("1,0") != std::string::npos) {
Vanger 35:257eb41405e1 156 break;
Vanger 35:257eb41405e1 157 } else if(result.find("ERROR") != std::string::npos) {
Vanger 35:257eb41405e1 158 break;
Vanger 35:257eb41405e1 159 } else {
Vanger 35:257eb41405e1 160 wait(1);
Vanger 35:257eb41405e1 161 }
Vanger 35:257eb41405e1 162 }
Vanger 35:257eb41405e1 163
Vanger 52:2cb58398a4f9 164 pppConnected = false;
Vanger 30:1326b623919a 165 return;
Vanger 26:2b769ed8de4f 166 }
Vanger 27:ec44d5a9544f 167
Vanger 26:2b769ed8de4f 168 bool EasyIP::isConnected()
Vanger 26:2b769ed8de4f 169 {
Vanger 52:2cb58398a4f9 170 enum RadioState {IDLE, CONNECTING, CONNECTED, DISCONNECTED};
Vanger 51:ffc556ba33f7 171 //state flags for various connection components
Vanger 30:1326b623919a 172 bool signal = false, regist = false, active = false;
Vanger 26:2b769ed8de4f 173
Vanger 29:edc613ed3f2e 174 //1) Check if APN was set if we're on an HSPA radio
Vanger 29:edc613ed3f2e 175 if (type == MTSMC_H5_IP || type == MTSMC_H5 || type == MTSMC_G3) {
Vanger 29:edc613ed3f2e 176 if(apn.size() == 0) {
Vanger 29:edc613ed3f2e 177 logDebug("APN is not set");
Vanger 29:edc613ed3f2e 178 return false;
Vanger 29:edc613ed3f2e 179 }
Vanger 29:edc613ed3f2e 180 }
Vanger 29:edc613ed3f2e 181
Vanger 29:edc613ed3f2e 182 //2) Check that we do not have a live connection up
Vanger 52:2cb58398a4f9 183 if (socketOpened) {
Vanger 29:edc613ed3f2e 184 logDebug("Socket is opened");
Vanger 29:edc613ed3f2e 185 return true;
Vanger 29:edc613ed3f2e 186 }
Vanger 29:edc613ed3f2e 187
Vanger 29:edc613ed3f2e 188 //3) Query the radio
Vanger 52:2cb58398a4f9 189 int rssi = getSignalStrength();
Vanger 52:2cb58398a4f9 190 if (rssi == 99 || rssi == -1) {
Vanger 52:2cb58398a4f9 191 //Signal strength is nonexistent
Vanger 29:edc613ed3f2e 192 signal = false;
Vanger 29:edc613ed3f2e 193 } else {
Vanger 52:2cb58398a4f9 194 signal = true;
Vanger 29:edc613ed3f2e 195 }
Vanger 27:ec44d5a9544f 196
Vanger 52:2cb58398a4f9 197 Registration creg = getRegistration();
Vanger 52:2cb58398a4f9 198 if (creg == REGISTERED) {
Vanger 52:2cb58398a4f9 199 regist = true;
Vanger 29:edc613ed3f2e 200 } else {
Vanger 52:2cb58398a4f9 201 regist = false;
Vanger 29:edc613ed3f2e 202 }
Vanger 27:ec44d5a9544f 203
Vanger 56:43205bd2752a 204 string reply = sendCommand("AT#SGACT?", 1000);
Vanger 52:2cb58398a4f9 205 if (reply.find("1,1") != std::string::npos) {
Vanger 52:2cb58398a4f9 206 active = true;
Vanger 29:edc613ed3f2e 207 } else {
Vanger 52:2cb58398a4f9 208 active = false;
Vanger 29:edc613ed3f2e 209 }
Vanger 52:2cb58398a4f9 210
Vanger 60:250c17af30fb 211 //Updates pppConnected to reflect current connection state
Vanger 52:2cb58398a4f9 212 RadioState state;
Vanger 52:2cb58398a4f9 213 bool ppp = pppConnected;
Vanger 52:2cb58398a4f9 214 if (signal && regist && active) {
Vanger 52:2cb58398a4f9 215 state = CONNECTED;
Vanger 52:2cb58398a4f9 216 pppConnected = true;
Vanger 52:2cb58398a4f9 217 } else if (signal && !regist && !active) {
Vanger 52:2cb58398a4f9 218 state = IDLE;
Vanger 52:2cb58398a4f9 219 pppConnected = false;
Vanger 52:2cb58398a4f9 220 } else if (active) {
Vanger 52:2cb58398a4f9 221 state = CONNECTING;
Vanger 52:2cb58398a4f9 222 } else {
Vanger 52:2cb58398a4f9 223 state = DISCONNECTED;
Vanger 30:1326b623919a 224 pppConnected = false;
Vanger 30:1326b623919a 225 }
Vanger 35:257eb41405e1 226
Vanger 60:250c17af30fb 227 //Compares current connection state with previous pppConnected variable state
Vanger 52:2cb58398a4f9 228 if (!ppp && state == CONNECTED) {
Vanger 52:2cb58398a4f9 229 logWarning("Internal PPP state tracking differs from radio (DISCONNECTED:CONNECTED)");
Vanger 52:2cb58398a4f9 230 } else if (ppp && state != CONNECTED) {
Vanger 56:43205bd2752a 231 string stateStr;
Vanger 56:43205bd2752a 232 switch (state) {
Vanger 56:43205bd2752a 233 case IDLE:
Vanger 56:43205bd2752a 234 stateStr = "IDLE";
Vanger 56:43205bd2752a 235 break;
Vanger 56:43205bd2752a 236 case CONNECTING:
Vanger 56:43205bd2752a 237 stateStr = "CONNECTING";
Vanger 56:43205bd2752a 238 break;
Vanger 56:43205bd2752a 239 case DISCONNECTED:
Vanger 56:43205bd2752a 240 stateStr = "DISCONNECTED";
Vanger 56:43205bd2752a 241 break;
Vanger 56:43205bd2752a 242 case CONNECTED:
Vanger 56:43205bd2752a 243 stateStr = "CONNECTED";
Vanger 56:43205bd2752a 244 break;
Vanger 56:43205bd2752a 245 default:
Vanger 56:43205bd2752a 246 stateStr = "UKNOWN";
Vanger 56:43205bd2752a 247 break;
Vanger 56:43205bd2752a 248 }
Vanger 56:43205bd2752a 249 logWarning("Internal PPP state tracking differs from radio (CONNECTED:%s)", stateStr.c_str());
Vanger 29:edc613ed3f2e 250 }
Vanger 52:2cb58398a4f9 251
Vanger 26:2b769ed8de4f 252 return pppConnected;
Vanger 26:2b769ed8de4f 253 }
Vanger 30:1326b623919a 254
Vanger 33:3b6f3904dde0 255 void EasyIP::reset()
Vanger 33:3b6f3904dde0 256 {
Vanger 33:3b6f3904dde0 257 disconnect();
Vanger 52:2cb58398a4f9 258
Vanger 33:3b6f3904dde0 259 if(sendBasicCommand("AT#REBOOT", 10000) != MTS_SUCCESS) {
Vanger 52:2cb58398a4f9 260 logError("Socket Modem did not accept RESET command");
Vanger 33:3b6f3904dde0 261 } else {
Vanger 52:2cb58398a4f9 262 logWarning("Socket Modem is resetting, allow 30 seconds for it to come back");
Vanger 33:3b6f3904dde0 263 return;
Vanger 33:3b6f3904dde0 264 }
Vanger 33:3b6f3904dde0 265 }
Vanger 33:3b6f3904dde0 266
Vanger 60:250c17af30fb 267 //Opens socket connection
Vanger 26:2b769ed8de4f 268 bool EasyIP::open(const std::string& address, unsigned int port, Mode mode)
Vanger 26:2b769ed8de4f 269 {
Vanger 30:1326b623919a 270 char sOpenSocketCmd[256] = {0}; //String for AT command
Vanger 30:1326b623919a 271 std::string sMode = "";
Vanger 31:529db15abda7 272 int typeSocket = 0;
Vanger 31:529db15abda7 273 int closeType = 0;
Vanger 30:1326b623919a 274
Vanger 30:1326b623919a 275 //1) Check that we do not have a live connection up
Vanger 30:1326b623919a 276 if(socketOpened) {
Vanger 30:1326b623919a 277 //Check that the address, port, and mode match
Vanger 30:1326b623919a 278 if(host_address != address || host_port != port || socketMode != mode) {
Vanger 30:1326b623919a 279 if(socketMode == TCP) {
Vanger 30:1326b623919a 280 logError("TCP socket already opened [%s:%d]", host_address.c_str(), host_port);
Vanger 30:1326b623919a 281 } else {
Vanger 30:1326b623919a 282 logError("UDP socket already opened [%s:%d]", host_address.c_str(), host_port);
Vanger 30:1326b623919a 283 }
Vanger 30:1326b623919a 284 return false;
Vanger 30:1326b623919a 285 }
Vanger 30:1326b623919a 286
Vanger 30:1326b623919a 287 logDebug("Socket already opened");
Vanger 30:1326b623919a 288 return true;
Vanger 30:1326b623919a 289 }
Vanger 30:1326b623919a 290
Vanger 30:1326b623919a 291 //2) Check Parameters
Vanger 30:1326b623919a 292 if(port > 65535) {
Vanger 30:1326b623919a 293 logError("port out of range (0-65535)");
Vanger 30:1326b623919a 294 return false;
Vanger 30:1326b623919a 295 }
Vanger 41:8b9b5098696f 296
Vanger 41:8b9b5098696f 297 if(type == MTSMC_EV3) {
Vanger 41:8b9b5098696f 298 if(!local_port) {
Vanger 41:8b9b5098696f 299 logDebug("Local port set to 1, port 0 not supported for MTSMC_EV3");
Vanger 41:8b9b5098696f 300 local_port = 1;
Vanger 41:8b9b5098696f 301 }
Vanger 41:8b9b5098696f 302 }
Vanger 30:1326b623919a 303
Vanger 30:1326b623919a 304 //3) Check PPP connection
Vanger 30:1326b623919a 305 if(!isConnected()) {
Vanger 30:1326b623919a 306 logError("PPP not established. Attempting to connect");
Vanger 30:1326b623919a 307 if(!connect()) {
Vanger 30:1326b623919a 308 logError("PPP connection failed");
Vanger 30:1326b623919a 309 return false;
Vanger 30:1326b623919a 310 } else {
Vanger 30:1326b623919a 311 logDebug("PPP connection established");
Vanger 30:1326b623919a 312 }
Vanger 30:1326b623919a 313 }
Vanger 30:1326b623919a 314
Vanger 56:43205bd2752a 315 //4) Set escape sequence to not be transmitted through socket
Vanger 30:1326b623919a 316 if(sendBasicCommand("AT#SKIPESC=1", 2000) != MTS_SUCCESS) {
Vanger 30:1326b623919a 317 logWarning("Failed to disable escape sequence transmission on data mode suspension");
Vanger 30:1326b623919a 318 }
Vanger 30:1326b623919a 319
Vanger 30:1326b623919a 320 if(mode == TCP) {
Vanger 30:1326b623919a 321 typeSocket = 0;
Vanger 30:1326b623919a 322 sMode = "TCP";
Vanger 30:1326b623919a 323 } else {
Vanger 30:1326b623919a 324 typeSocket = 1;
Vanger 30:1326b623919a 325 sMode = "UDP";
Vanger 30:1326b623919a 326 }
Vanger 31:529db15abda7 327
Vanger 31:529db15abda7 328 if(socketCloseable) {
Vanger 31:529db15abda7 329 closeType = 0;
Vanger 31:529db15abda7 330 } else {
Vanger 31:529db15abda7 331 closeType = 255;
Vanger 31:529db15abda7 332 }
Vanger 60:250c17af30fb 333
Vanger 31:529db15abda7 334 //5) Open Socket
Vanger 31:529db15abda7 335 sprintf(sOpenSocketCmd, "AT#SD=1,%d,%d,%s,%d,%d,0", typeSocket, port, address.c_str(),closeType , local_port);
Vanger 38:b2088faa8bfd 336 std::string response = sendCommand(sOpenSocketCmd, 60000);
Vanger 30:1326b623919a 337
Vanger 30:1326b623919a 338 if(response.find("CONNECT") != std::string::npos) {
Vanger 30:1326b623919a 339 host_address = address;
Vanger 30:1326b623919a 340 host_port = port;
Vanger 30:1326b623919a 341
Vanger 30:1326b623919a 342 logInfo("Opened %s Socket [%s:%d]", sMode.c_str(), address.c_str(), port);
Vanger 30:1326b623919a 343 socketOpened = true;
Vanger 30:1326b623919a 344 socketMode = mode;
Vanger 30:1326b623919a 345 } else {
Vanger 30:1326b623919a 346 logWarning("Unable to open %s Socket [%s:%d]", sMode.c_str(), address.c_str(), port);
Vanger 30:1326b623919a 347 socketOpened = false;
Vanger 30:1326b623919a 348 }
Vanger 30:1326b623919a 349
Vanger 26:2b769ed8de4f 350 return socketOpened;
Vanger 26:2b769ed8de4f 351 }
Vanger 27:ec44d5a9544f 352
Vanger 60:250c17af30fb 353 //Closes socket connection
Vanger 67:7c705fe2acec 354 bool EasyIP::close(bool shutdown)
Vanger 26:2b769ed8de4f 355 {
Vanger 26:2b769ed8de4f 356
Vanger 30:1326b623919a 357 if(io == NULL) {
Vanger 30:1326b623919a 358 logError("MTSBufferedIO not set");
Vanger 30:1326b623919a 359 return false;
Vanger 30:1326b623919a 360 }
Vanger 30:1326b623919a 361
Vanger 30:1326b623919a 362 if(!socketOpened) {
Vanger 30:1326b623919a 363 logWarning("Socket close() called, but socket was not open");
Vanger 30:1326b623919a 364 return true;
Vanger 30:1326b623919a 365 }
Vanger 30:1326b623919a 366
Vanger 30:1326b623919a 367 if(!socketCloseable) {
Vanger 30:1326b623919a 368 logError("Socket is not closeable");
Vanger 30:1326b623919a 369 return false;
Vanger 30:1326b623919a 370 }
Vanger 30:1326b623919a 371
Vanger 30:1326b623919a 372 if(!sendEscapeCommand()) {
Vanger 30:1326b623919a 373 logError("Failed to exit online mode");
Vanger 30:1326b623919a 374 return false;
Vanger 30:1326b623919a 375 } else {
Vanger 30:1326b623919a 376 socketOpened = false;
Vanger 30:1326b623919a 377 }
Vanger 30:1326b623919a 378
Vanger 54:a6c738bfc391 379 if (sendBasicCommand("AT#SH=1", 2000) != MTS_SUCCESS) {
Vanger 30:1326b623919a 380 logDebug("Failed to close socket connection");
Vanger 30:1326b623919a 381 }
Vanger 30:1326b623919a 382
Vanger 60:250c17af30fb 383 //Clear receive buffer
Vanger 67:7c705fe2acec 384 if (shutdown) {
Vanger 66:8c55e2bf7270 385 int counter = 0;
Vanger 66:8c55e2bf7270 386 char tmp[256];
Vanger 66:8c55e2bf7270 387 do {
Vanger 66:8c55e2bf7270 388 if(socketOpened == false) {
Vanger 66:8c55e2bf7270 389 break;
Vanger 66:8c55e2bf7270 390 }
Vanger 66:8c55e2bf7270 391 read(tmp, 256, 1000);
Vanger 66:8c55e2bf7270 392 } while(counter++ < 10);
Vanger 66:8c55e2bf7270 393
Vanger 66:8c55e2bf7270 394 io->rxClear();
Vanger 66:8c55e2bf7270 395 io->txClear();
Vanger 66:8c55e2bf7270 396 }
Vanger 30:1326b623919a 397
Vanger 30:1326b623919a 398 return !socketOpened;
Vanger 26:2b769ed8de4f 399 }
Vanger 26:2b769ed8de4f 400
Vanger 60:250c17af30fb 401 //Read from socket
Vanger 26:2b769ed8de4f 402 int EasyIP::read(char* data, int max, int timeout)
Vanger 26:2b769ed8de4f 403 {
Vanger 30:1326b623919a 404 if(io == NULL) {
Vanger 30:1326b623919a 405 logError("MTSBufferedIO not set");
Vanger 30:1326b623919a 406 return -1;
Vanger 30:1326b623919a 407 }
Vanger 30:1326b623919a 408
Vanger 30:1326b623919a 409 //Check that nothing is in the rx buffer
Vanger 30:1326b623919a 410 if(!socketOpened && !io->readable()) {
Vanger 30:1326b623919a 411 logError("Socket is not open");
Vanger 30:1326b623919a 412 return -1;
Vanger 30:1326b623919a 413 }
Vanger 30:1326b623919a 414
Vanger 30:1326b623919a 415 int bytesRead = 0;
Vanger 30:1326b623919a 416
Vanger 30:1326b623919a 417 if(timeout >= 0) {
Vanger 30:1326b623919a 418 bytesRead = io->read(data, max, static_cast<unsigned int>(timeout));
Vanger 30:1326b623919a 419 } else {
Vanger 30:1326b623919a 420 bytesRead = io->read(data, max);
Vanger 30:1326b623919a 421 }
Vanger 35:257eb41405e1 422
Vanger 35:257eb41405e1 423 //Scan for socket closed message
Vanger 31:529db15abda7 424 if(bytesRead > 0 && socketCloseable) {
Vanger 35:257eb41405e1 425 for(int i = 0; i < bytesRead; i++) {
Vanger 31:529db15abda7 426 if(data[i] == 'N') {
Vanger 31:529db15abda7 427 if(strstr(&data[i], "NO CARRIER")) {
Vanger 31:529db15abda7 428 logTrace("Found socket closed message. Checking validity");
Vanger 31:529db15abda7 429 //Close socket and Cut Off End of Message
Vanger 31:529db15abda7 430 socketOpened = socketCheck(); //Verifies legitimacy of socket disconnect
Vanger 31:529db15abda7 431 if(socketOpened) {
Vanger 31:529db15abda7 432 logDebug("Socket still open");
Vanger 31:529db15abda7 433 continue;
Vanger 31:529db15abda7 434 } else {
Vanger 31:529db15abda7 435 logDebug("Socket closed");
Vanger 31:529db15abda7 436 data[i] = '\0';
Vanger 31:529db15abda7 437 bytesRead = i;
Vanger 31:529db15abda7 438 break;
Vanger 31:529db15abda7 439 }
Vanger 30:1326b623919a 440 }
Vanger 30:1326b623919a 441 }
Vanger 30:1326b623919a 442 }
Vanger 30:1326b623919a 443 }
Vanger 30:1326b623919a 444 return bytesRead;
Vanger 26:2b769ed8de4f 445 }
Vanger 26:2b769ed8de4f 446
Vanger 60:250c17af30fb 447 //Write to socket
Vanger 26:2b769ed8de4f 448 int EasyIP::write(const char* data, int length, int timeout)
Vanger 26:2b769ed8de4f 449 {
Vanger 30:1326b623919a 450 if(io == NULL) {
Vanger 30:1326b623919a 451 logError("MTSBufferedIO not set");
Vanger 30:1326b623919a 452 return -1;
Vanger 30:1326b623919a 453 }
Vanger 30:1326b623919a 454
Vanger 30:1326b623919a 455 if(!socketOpened) {
Vanger 30:1326b623919a 456 logError("Socket is not open");
Vanger 30:1326b623919a 457 return -1;
Vanger 30:1326b623919a 458 }
Vanger 30:1326b623919a 459
Vanger 30:1326b623919a 460 int bytesWritten = 0;
Vanger 31:529db15abda7 461 int size = length;
Vanger 31:529db15abda7 462 int failedWrites = 0;
Vanger 30:1326b623919a 463 if(timeout >= 0) {
Vanger 30:1326b623919a 464 Timer tmr;
Vanger 30:1326b623919a 465 tmr.start();
Vanger 30:1326b623919a 466 do {
Vanger 30:1326b623919a 467 int available = io->writeable();
Vanger 30:1326b623919a 468 if (available > 0) {
Vanger 31:529db15abda7 469 size = MIN(available, length - bytesWritten);
Vanger 31:529db15abda7 470 bytesWritten += io->write(&data[bytesWritten], size);
Vanger 30:1326b623919a 471 } else {
Vanger 30:1326b623919a 472 wait(0.05);
Vanger 30:1326b623919a 473 }
Vanger 30:1326b623919a 474 } while (tmr.read_ms() <= timeout && bytesWritten < length);
Vanger 30:1326b623919a 475 } else {
Vanger 31:529db15abda7 476 //If timeout is -1:
Vanger 31:529db15abda7 477 do {
Vanger 31:529db15abda7 478 int available = io->writeable();
Vanger 31:529db15abda7 479 if(available > 0) {
Vanger 31:529db15abda7 480 size = MIN(available, length - bytesWritten);
Vanger 31:529db15abda7 481 int currentWritten = io->write(&data[bytesWritten], size);
Vanger 31:529db15abda7 482 bytesWritten += currentWritten;
Vanger 31:529db15abda7 483 if(!currentWritten) {
Vanger 31:529db15abda7 484 failedWrites++;
Vanger 31:529db15abda7 485 }
Vanger 31:529db15abda7 486 if(failedWrites > 10) {
Vanger 31:529db15abda7 487 logError("Couldn't write any characters");
Vanger 31:529db15abda7 488 return bytesWritten;
Vanger 31:529db15abda7 489 }
Vanger 31:529db15abda7 490 } else {
Vanger 31:529db15abda7 491 wait(0.05);
Vanger 30:1326b623919a 492 }
Vanger 31:529db15abda7 493 } while (bytesWritten < length);
Vanger 30:1326b623919a 494 }
Vanger 30:1326b623919a 495 return bytesWritten;
Vanger 26:2b769ed8de4f 496 }
Vanger 26:2b769ed8de4f 497
Vanger 26:2b769ed8de4f 498 Code EasyIP::setApn(const std::string& apn)
Vanger 26:2b769ed8de4f 499 {
Vanger 26:2b769ed8de4f 500 if (type == MTSMC_H5 || type == MTSMC_G3) {
Vanger 56:43205bd2752a 501 //CGDCONT has options: IP,PPP,IPv6
Vanger 56:43205bd2752a 502 Code code = sendBasicCommand("AT+CGDCONT=1,IP," + apn, 1000);
Vanger 26:2b769ed8de4f 503 if (code != MTS_SUCCESS) {
Vanger 56:43205bd2752a 504 return code;
Vanger 26:2b769ed8de4f 505 }
Vanger 26:2b769ed8de4f 506 this->apn = apn;
Vanger 56:43205bd2752a 507 return code;
Vanger 26:2b769ed8de4f 508 } else {
Vanger 26:2b769ed8de4f 509 logInfo("CDMA radios don't need an APN");
Vanger 26:2b769ed8de4f 510 return MTS_SUCCESS;
Vanger 26:2b769ed8de4f 511 }
Vanger 26:2b769ed8de4f 512 }
Vanger 27:ec44d5a9544f 513
Vanger 26:2b769ed8de4f 514 bool EasyIP::ping(const std::string& address)
Vanger 26:2b769ed8de4f 515 {
Vanger 26:2b769ed8de4f 516 char buffer[256] = {0};
Vanger 27:ec44d5a9544f 517 std::vector<std::string> parts;
Vanger 27:ec44d5a9544f 518 int TTL=0;
Vanger 27:ec44d5a9544f 519 int Timeout=0;
Vanger 27:ec44d5a9544f 520
Vanger 27:ec44d5a9544f 521 //Format parameters for sending to radio
Vanger 30:1326b623919a 522 sprintf(buffer, "AT#PING=%s,1,32,%d", address.c_str(), (PINGDELAY*10));
Vanger 26:2b769ed8de4f 523
Vanger 27:ec44d5a9544f 524 for(int pngs=0; pngs<PINGNUM; pngs++) {
Vanger 35:257eb41405e1 525 std::string response = sendCommand(buffer, (PINGDELAY*2000)); //Send 1 ping
Vanger 52:2cb58398a4f9 526 if(response.empty() || response.find("ERROR") != std::string::npos) {
Vanger 28:f93d7b3f7c2e 527 continue; //Skip current loop if send command fails
Vanger 28:f93d7b3f7c2e 528 }
Vanger 27:ec44d5a9544f 529 parts = Text::split(response, "\r\n");
Vanger 28:f93d7b3f7c2e 530 if(parts.size() < 2) {
Vanger 28:f93d7b3f7c2e 531 continue;
Vanger 28:f93d7b3f7c2e 532 }
Vanger 27:ec44d5a9544f 533 parts = Text::split(parts[1], ",");
Vanger 28:f93d7b3f7c2e 534 if(parts.size() < 4) {
Vanger 28:f93d7b3f7c2e 535 continue;
Vanger 28:f93d7b3f7c2e 536 }
Vanger 27:ec44d5a9544f 537 //Parse TTL and Timeout values
Vanger 27:ec44d5a9544f 538 Timeout = std::atoi(parts[2].c_str());
Vanger 27:ec44d5a9544f 539 TTL = std::atoi(parts[3].c_str());
Vanger 27:ec44d5a9544f 540
Vanger 27:ec44d5a9544f 541 if((Timeout < 600) && (TTL < 255)) {
Vanger 27:ec44d5a9544f 542 return true;
Vanger 27:ec44d5a9544f 543 }
Vanger 52:2cb58398a4f9 544 }
Vanger 26:2b769ed8de4f 545 return false;
Vanger 26:2b769ed8de4f 546 }
Vanger 26:2b769ed8de4f 547
Vanger 33:3b6f3904dde0 548 bool EasyIP::sendEscapeCommand()
Vanger 33:3b6f3904dde0 549 {
Vanger 33:3b6f3904dde0 550 //string Cellular::sendCommand(const std::string& command, unsigned int timeoutMillis, char esc)
Vanger 33:3b6f3904dde0 551 if(io == NULL) {
Vanger 33:3b6f3904dde0 552 logError("MTSBufferedIO not set");
Vanger 33:3b6f3904dde0 553 return false;
Vanger 33:3b6f3904dde0 554 }
Vanger 33:3b6f3904dde0 555 if(!socketOpened) {
Vanger 52:2cb58398a4f9 556 logError("Socket is not open.");
Vanger 52:2cb58398a4f9 557 return false;
Vanger 33:3b6f3904dde0 558 }
Vanger 33:3b6f3904dde0 559
Vanger 33:3b6f3904dde0 560 if(!socketCloseable) {
Vanger 33:3b6f3904dde0 561 logError("Socket is not closeable");
Vanger 33:3b6f3904dde0 562 return false;
Vanger 33:3b6f3904dde0 563 }
Vanger 33:3b6f3904dde0 564
Vanger 33:3b6f3904dde0 565 io->rxClear();
Vanger 33:3b6f3904dde0 566 io->txClear();
Vanger 33:3b6f3904dde0 567
Vanger 33:3b6f3904dde0 568 std::string result;
Vanger 52:2cb58398a4f9 569 unsigned int timeoutMillis = 10000;
Vanger 33:3b6f3904dde0 570 //Attempt to write command
Vanger 52:2cb58398a4f9 571 //Format for +++ command is 1 second wait, send +++, then another second wait
Vanger 52:2cb58398a4f9 572 wait(1.2);
Vanger 49:1fc51c53cebf 573 if(io->write("+++", 3, timeoutMillis) != 3) {
Vanger 33:3b6f3904dde0 574 //Failed to write command
Vanger 33:3b6f3904dde0 575 logError("failed to send command to radio within %d milliseconds", timeoutMillis);
Vanger 33:3b6f3904dde0 576 return false;
Vanger 33:3b6f3904dde0 577 }
Vanger 33:3b6f3904dde0 578
Vanger 52:2cb58398a4f9 579 Timer tmr;
Vanger 33:3b6f3904dde0 580 char tmp[256];
Vanger 33:3b6f3904dde0 581 tmp[255] = 0;
Vanger 33:3b6f3904dde0 582 bool done = false;
Vanger 33:3b6f3904dde0 583 bool exitmode = false;
Vanger 52:2cb58398a4f9 584 tmr.start();
Vanger 33:3b6f3904dde0 585 do {
Vanger 33:3b6f3904dde0 586 //Make a non-blocking read call by passing timeout of zero
Vanger 52:2cb58398a4f9 587 int size = io->read(tmp,255,0); //1 less than allocated (timeout is instant)
Vanger 52:2cb58398a4f9 588 if(size > 0) {
Vanger 52:2cb58398a4f9 589 result.append(tmp, size);
Vanger 52:2cb58398a4f9 590 }
Vanger 54:a6c738bfc391 591 if(result.find("OK\r\n") != std::string::npos) {
Vanger 33:3b6f3904dde0 592 exitmode = true;
Vanger 33:3b6f3904dde0 593 done = true;
Vanger 54:a6c738bfc391 594 } else if(result.find("NO CARRIER\r\n") != std::string::npos) {
Vanger 52:2cb58398a4f9 595 socketOpened = false;
Vanger 33:3b6f3904dde0 596 exitmode = true;
Vanger 33:3b6f3904dde0 597 done = true;
Vanger 33:3b6f3904dde0 598 } else if(result.find("ERROR") != std::string::npos) {
Vanger 33:3b6f3904dde0 599 exitmode = false;
Vanger 33:3b6f3904dde0 600 done = true;
Vanger 33:3b6f3904dde0 601 }
Vanger 52:2cb58398a4f9 602 if(tmr.read_ms() >= timeoutMillis) {
Vanger 33:3b6f3904dde0 603 logDebug("Escape sequence [+++] timed out after %d milliseconds", timeoutMillis);
Vanger 33:3b6f3904dde0 604 exitmode = true;
Vanger 33:3b6f3904dde0 605 done = true;
Vanger 33:3b6f3904dde0 606 }
Vanger 33:3b6f3904dde0 607 } while (!done);
Vanger 33:3b6f3904dde0 608
Vanger 54:a6c738bfc391 609 wait(0.1); //Without a slight wait time after receiving OK, radio would
Vanger 54:a6c738bfc391 610 //fail to correctly receive and respond to the next AT command
Vanger 33:3b6f3904dde0 611 return exitmode;
Vanger 33:3b6f3904dde0 612 }
Vanger 33:3b6f3904dde0 613
Vanger 33:3b6f3904dde0 614 bool EasyIP::socketCheck() {
Vanger 57:7eb2eb536d4a 615 enum SocketStatus {SOCKETCLOSED = 0, SOCKETACTIVEDATA = 1, SOCKETSUSPEND = 2, SOCKETSUSPENDDATA = 3, SOCKETLISTEN = 4, SOCKETINCOMING = 5, ERROR = 9};
Vanger 33:3b6f3904dde0 616 bool status = false;
Vanger 56:43205bd2752a 617 int socketInfo = ERROR;
Vanger 33:3b6f3904dde0 618 std::vector<std::string> params;
Vanger 33:3b6f3904dde0 619
Vanger 33:3b6f3904dde0 620 //Goes from data mode to command mode
Vanger 33:3b6f3904dde0 621 if(sendEscapeCommand()) {
Vanger 52:2cb58398a4f9 622 std::string reply = sendCommand("AT#SS=1", 2000);
Vanger 52:2cb58398a4f9 623 if(reply.find("OK") != std::string::npos) {
Vanger 52:2cb58398a4f9 624 //Found valid response
Vanger 52:2cb58398a4f9 625 params = Text::split(reply, "\r\n");
Vanger 52:2cb58398a4f9 626 params = Text::split(params[1], ",");
Vanger 52:2cb58398a4f9 627 socketInfo = atoi(params[1].c_str());
Vanger 52:2cb58398a4f9 628 } else {
Vanger 52:2cb58398a4f9 629 logError("Could not determine socket status[%d]",socketInfo);
Vanger 56:43205bd2752a 630 socketInfo = ERROR;
Vanger 33:3b6f3904dde0 631 }
Vanger 33:3b6f3904dde0 632 } else {
Vanger 33:3b6f3904dde0 633 status = false; //Return value of socketOpened when checking
Vanger 33:3b6f3904dde0 634 }
Vanger 33:3b6f3904dde0 635
Vanger 33:3b6f3904dde0 636 //Check socket status query
Vanger 56:43205bd2752a 637 if(socketInfo == SOCKETINCOMING || socketInfo == SOCKETACTIVEDATA || socketInfo == SOCKETSUSPEND || socketInfo == SOCKETSUSPENDDATA || socketInfo == SOCKETLISTEN) { //Socket opened responses
Vanger 52:2cb58398a4f9 638 status = true;
Vanger 52:2cb58398a4f9 639 } else if(socketInfo == SOCKETCLOSED || socketInfo == SOCKETINCOMING) {
Vanger 52:2cb58398a4f9 640 status = false;
Vanger 33:3b6f3904dde0 641 } else {
Vanger 54:a6c738bfc391 642 logError("Could not determine socket status[%d]",socketInfo);
Vanger 52:2cb58398a4f9 643 status = false;
Vanger 33:3b6f3904dde0 644 }
Vanger 33:3b6f3904dde0 645
Vanger 52:2cb58398a4f9 646 //Reconnect to active socket if able
Vanger 33:3b6f3904dde0 647 if(status) {
Vanger 33:3b6f3904dde0 648 std::string reconnect = sendCommand("AT#SO=1", 2000);
Vanger 33:3b6f3904dde0 649 if(reconnect.find("CONNECT") != std::string::npos || reconnect.find("OK") != std::string::npos) {
Vanger 33:3b6f3904dde0 650 } else {
Vanger 33:3b6f3904dde0 651 logError("Failed to resume socket connection");
Vanger 33:3b6f3904dde0 652 }
Vanger 33:3b6f3904dde0 653 }
Vanger 33:3b6f3904dde0 654 return status;
Vanger 33:3b6f3904dde0 655 }