Diff: Cellular/UIP.cpp

Revision:

3:04046eebaef5

Parent:

2:10e72dce251d

Child:

4:1f63354b8d1b

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Cellular/UIP.cpp	Tue May 20 15:21:06 2014 -0500
@@ -0,0 +1,816 @@
+#include "mbed.h"
+#include "UIP.h"
+#include "MTSText.h"
+#include "CellUtils.h"
+
+using namespace mts;
+
+UIP::UIP()
+:   dcd(NULL),
+    dtr(NULL),
+    resetLine(NULL)
+{
+    io = NULL;
+    echoMode = true;
+    pppConnected = false;
+    mode = TCP;
+    socketOpened = false;
+    socketCloseable = true;
+    local_port = 0;
+    local_address = "";
+    host_port = 0;
+}
+
+UIP::~UIP()
+{
+    if (dtr != NULL) {
+        dtr->write(1);
+    }
+    
+    delete dcd;
+    delete dtr;
+    delete resetLine;
+}
+
+bool UIP::init(MTSBufferedIO* io)
+{
+    if (io == NULL) {
+        return false;
+    }
+    this->io = io;
+
+    test();
+    // Reset radio to make sure it's in a good state and wait for it to come back
+    reset();
+    test();
+
+    return SUCCESS;
+}
+
+bool UIP::configureSignals(PinName DCD, PinName DTR, PinName RESET)
+{
+    //Set DCD - The radio will raise and lower this line
+    if (DCD != NC) {
+        dcd = new DigitalIn(DCD);
+    }
+    /* Set DTR - This line should be lowered when we want to talk to the radio and raised when we're done
+    * for now we will lower it in the constructor and raise it in the destructor.
+    */
+    if (DTR != NC) {
+        dtr = new DigitalOut(DTR);
+        dtr->write(0);
+    }
+    //Set RESET - Set the hardware reset line to the radio
+    if (RESET != NC) {
+        resetLine = new DigitalOut(RESET);
+    }
+    return true;
+}
+
+bool UIP::connect()
+{
+    //Check if socket is open
+    if(socketOpened) {
+        return true;
+    }
+
+    //Check if already connected
+    if(isConnected()) {
+        return true;
+    }
+
+    Timer tmr;
+
+    //Check Registration: AT+CREG? == 0,1
+    tmr.start();
+    do {
+        Registration registration = getRegistration();
+        if(registration != REGISTERED) {
+            printf("[WARNING] Not Registered [%d] ... waiting\r\n", (int)registration);
+            wait(1);
+        } else {
+            break;
+        }
+    } while(tmr.read() < 30);
+
+    //Check RSSI: AT+CSQ
+    tmr.reset();
+    do {
+        int rssi = getSignalStrength();
+        printf("[DEBUG] Signal strength: %d\r\n", rssi);
+        if(rssi == 99) {
+            printf("[WARNING] No Signal ... waiting\r\n");
+            wait(1);
+        } else {
+            break;
+        }
+    } while(tmr.read() < 30);
+
+    //AT#CONNECTIONSTART: Make a PPP connection
+    printf("[DEBUG] Making PPP Connection Attempt. APN[%s]\r\n", apn.c_str());
+    std::string pppResult = sendCommand("AT#CONNECTIONSTART", 120000);
+    std::vector<std::string> parts = Text::split(pppResult, "\r\n");
+
+    if(pppResult.find("Ok_Info_GprsActivation") != std::string::npos) {
+        if(parts.size() >= 2) {
+            local_address = parts[1];
+        }
+        printf("[INFO] PPP Connection Established: IP[%s]\r\n", local_address.c_str());
+        pppConnected = true;
+
+    } else {
+        pppConnected = false;
+    }
+
+    return pppConnected;
+}
+
+void UIP::disconnect()
+{
+    //AT#CONNECTIONSTOP: Close a PPP connection
+    printf("[DEBUG] Closing PPP Connection\r\n");
+
+    if(socketOpened) {
+        close();
+    }
+
+    Code code = sendBasicCommand("AT#CONNECTIONSTOP", 10000);
+    if(code == SUCCESS) {
+        printf("[DEBUG] Successfully closed PPP Connection\r\n");
+    } else {
+        printf("[ERROR] Closing PPP Connection [%d].  Continuing ...\r\n", (int)code);
+    }
+
+    pppConnected = false;
+}
+
+bool UIP::isConnected()
+{
+    //1) Check if APN was set
+    if(apn.size() == 0) {
+        printf("[DEBUG] APN is not set\r\n");
+        return false;
+    }
+
+    //1) Check that we do not have a live connection up
+    if(socketOpened) {
+        printf("[DEBUG] Socket is opened\r\n");
+        return true;
+    }
+    //2) Query the radio
+    std::string result = sendCommand("AT#VSTATE", 3000);
+    if(result.find("CONNECTED") != std::string::npos) {
+        if(pppConnected == false) {
+            printf("[WARNING] Internal PPP state tracking differs from radio (DISCONNECTED:CONNECTED)\r\n");
+        }
+        pppConnected = true;
+    } else {
+        if(pppConnected == true) {
+            //Find out what state is
+            size_t pos = result.find("STATE:");
+            if(pos != std::string::npos) {
+                result = Text::getLine(result, pos + sizeof("STATE:"), pos);
+                printf("[WARNING] Internal PPP state tracking differs from radio (CONNECTED:%s)\r\n", result.c_str());
+            } else {
+                printf("[ERROR] Unable to parse radio state: [%s]\r\n", result.c_str());
+            }
+
+        }
+        pppConnected = false;
+    }
+
+    return pppConnected;
+}
+
+bool UIP::bind(unsigned int port)
+{
+    if(socketOpened) {
+        printf("[ERROR] socket is open. Can not set local port\r\n");
+        return false;
+    }
+    if(port > 65535) {
+        printf("[ERROR] port out of range (0-65535)\r\n");
+        return false;
+    }
+    local_port = port;
+    return true;
+}
+
+bool UIP::open(const std::string& address, unsigned int port, Mode mode)
+{
+    char buffer[256] = {0};
+    Code portCode, addressCode;
+
+    //1) Check that we do not have a live connection up
+    if(socketOpened) {
+        //Check that the address, port, and mode match
+        if(host_address != address || host_port != port || this->mode != mode) {
+            if(this->mode == TCP) {
+                printf("[ERROR] TCP socket already opened [%s:%d]\r\n", host_address.c_str(), host_port);
+            } else {
+                printf("[ERROR] UDP socket already opened [%s:%d]\r\n", host_address.c_str(), host_port);
+            }
+            return false;
+        }
+
+        printf("[DEBUG] Socket already opened\r\n");
+        return true;
+    }
+
+    //2) Check Parameters
+    if(port > 65535) {
+        printf("[ERROR] port out of range (0-65535)\r\n");
+        return false;
+    }
+
+    //3) Check PPP connection
+    if(!isConnected()) {
+        printf("[ERROR] PPP not established.  Attempting to connect\r\n");
+        if(!connect()) {
+            printf("[ERROR] PPP connection failed\r\n");
+            return false;
+        } else {
+            printf("[DEBUG] PPP connection established\r\n");
+        }
+    }
+
+    //Set Local Port
+    if(local_port != 0) {
+        //Attempt to set local port
+        sprintf(buffer, "AT#OUTPORT=%d", local_port);
+        Code code = sendBasicCommand(buffer, 1000);
+        if(code != SUCCESS) {
+            printf("[WARNING] Unable to set local port (%d) [%d]\r\n", local_port, (int) code);
+        }
+    }
+
+    //Set TCP/UDP parameters
+    if(mode == TCP) {
+        if(socketCloseable) {
+            Code code = sendBasicCommand("AT#DLEMODE=1,1", 1000);
+            if(code != SUCCESS) {
+                printf("[WARNING] Unable to set socket closeable [%d]\r\n", (int) code);
+            }
+        }
+        sprintf(buffer, "AT#TCPPORT=1,%d", port);
+        portCode = sendBasicCommand(buffer, 1000);
+        addressCode = sendBasicCommand("AT#TCPSERV=1,\"" + address + "\"", 1000);
+    } else {
+        if(socketCloseable) {
+            Code code = sendBasicCommand("AT#UDPDLEMODE=1", 1000);
+            if(code != SUCCESS) {
+                printf("[WARNING] Unable to set socket closeable [%d]\r\n", (int) code);
+            }
+        }
+        sprintf(buffer, "AT#UDPPORT=%d", port);
+        portCode = sendBasicCommand(buffer, 1000);
+        addressCode = sendBasicCommand("AT#UDPSERV=\"" + address + "\"", 1000);
+    }
+
+    if(portCode == SUCCESS) {
+        host_port = port;
+    } else {
+        printf("[ERROR] Host port could not be set\r\n");
+    }
+
+    if(addressCode == SUCCESS) {
+        host_address = address;
+    } else {
+        printf("[ERROR] Host address could not be set\r\n");
+    }
+
+    // Try and Connect
+    std::string sMode;
+    std::string sOpenSocketCmd;
+    if(mode == TCP) {
+        sOpenSocketCmd = "AT#OTCP=1";
+        sMode = "TCP";
+    } else {
+        sOpenSocketCmd = "AT#OUDP";
+        sMode = "UDP";
+    }
+
+    string response = sendCommand(sOpenSocketCmd, 30000);
+    if (response.find("Ok_Info_WaitingForData") != string::npos) {
+        printf("[INFO] Opened %s Socket [%s:%d]\r\n", sMode.c_str(), address.c_str(), port);
+        socketOpened = true;
+    } else {
+        printf("[WARNING] Unable to open %s Socket [%s:%d]\r\n", sMode.c_str(),  address.c_str(), port);
+        socketOpened = false;
+    }
+
+    return socketOpened;
+}
+
+bool UIP::isOpen()
+{
+    if(io->readable()) {
+        printf("[DEBUG] Assuming open, data available to read.\n\r");
+        return true;
+    }
+    return socketOpened;
+}
+
+bool UIP::close()
+{
+    if(io == NULL) {
+        printf("[ERROR] MTSBufferedIO not set\r\n");
+        return false;
+    }
+
+    if(!socketOpened) {
+        printf("[WARNING] Socket close() called, but socket was not open\r\n");
+        return true;
+    }
+
+    if(!socketCloseable) {
+        printf("[ERROR] Socket is not closeable\r\n");
+        return false;
+    }
+
+
+
+    if(io->write(ETX, 1000) != 1) {
+        printf("[ERROR] Timed out attempting to close socket\r\n");
+        return false;
+    }
+
+    Timer tmr;
+    int counter = 0;
+    char tmp[256];
+    tmr.start();
+    do {
+        if(socketOpened == false) {
+            break;
+        }
+        read(tmp, 256, 1000);
+    } while(counter++ < 10);
+
+    io->rxClear();
+    io->txClear();
+
+    socketOpened = false;
+    return true;
+}
+
+int UIP::read(char* data, int max, int timeout)
+{
+    if(io == NULL) {
+        printf("[ERROR] MTSBufferedIO not set\r\n");
+        return -1;
+    }
+
+    //Check that nothing is in the rx buffer
+    if(!socketOpened && !io->readable()) {
+        printf("[ERROR] Socket is not open\r\n");
+        return -1;
+    }
+
+    int bytesRead = 0;
+
+    if(timeout >= 0) {
+        bytesRead = io->read(data, max, static_cast<unsigned int>(timeout));
+    } else {
+        bytesRead = io->read(data, max);
+    }
+
+    if(bytesRead > 0 && socketCloseable) {
+        //Remove escape characters
+        int index = 0;
+        bool escapeFlag = false;
+        for(int i = 0; i < bytesRead; i++) {
+            if(data[i] == DLE || data[i] == ETX) {
+                if(escapeFlag == true) {
+                    //This character has been escaped
+                    escapeFlag = false;
+                } else if(data[bytesRead] == DLE) {
+                    //Found escape character
+                    escapeFlag = true;
+                    continue;
+                } else {
+                    //ETX sent without escape -> Socket closed
+                    printf("[INFO] Read ETX character without DLE escape. Socket closed\r\n");
+                    socketOpened = false;
+                    continue;
+                }
+            }
+
+            if(index != i) {
+                data[index] = data[i];
+            }
+            index++;
+        }
+        bytesRead = index;
+    }
+
+    //Scan for socket closed message
+    for(size_t i = 0; i < bytesRead; i++) {
+        if(data[i] == 'O') {
+            if(strstr(&data[i], "Ok_Info_SocketClosed")) {
+                printf("[INFO] Found socket closed message. Socket closed\r\n");
+                //Close socket and Cut Off End of Message
+                socketOpened = false;
+                data[i] = '\0';
+                bytesRead = i;
+                break;
+            }
+        }
+    }
+    return bytesRead;
+}
+
+int UIP::write(const char* data, int length, int timeout)
+{
+    if(io == NULL) {
+        printf("[ERROR] MTSBufferedIO not set\r\n");
+        return -1;
+    }
+
+    if(!socketOpened) {
+        printf("[ERROR] Socket is not open\r\n");
+        return -1;
+    }
+
+    //In order to avoid allocating another buffer, capture indices of
+    //characters to escape during write
+    int specialWritten = 0;
+    std::vector<int> vSpecial;
+    if(socketCloseable) {
+        for(int i = 0; i < length; i++) {
+            if(data[i] == ETX || data[i] == DLE) {
+                //Push back index of special characters
+                vSpecial.push_back(i);
+            }
+        }
+    }
+
+    int bytesWritten = 0;
+    if(timeout >= 0) {
+        Timer tmr;
+        tmr.start();
+        do {
+            int available = io->writeable();
+            if (available > 0) {
+                if(specialWritten < vSpecial.size()) {
+                    //Check if current index is at a special character
+                    if(bytesWritten == vSpecial[specialWritten]) {
+                        if(available < 2) {
+                            //Requires at least two bytes of space
+                            wait(0.05);
+                            continue;
+                        }
+                        //Ready to write special character
+                        if(io->write(DLE)) {
+                            specialWritten++;
+                            if(io->write(data[bytesWritten])) {
+                                bytesWritten++;
+                            }
+                        } else {
+                            //Unable to write escape character, try again next round
+                            wait(0.05);
+                        }
+                    } else {
+                        //We want to write all the way up to the next special character
+                        int relativeIndex = vSpecial[specialWritten] - bytesWritten;
+                        int size = MIN(available, relativeIndex);
+                        bytesWritten += io->write(&data[bytesWritten], size);
+                    }
+                } else {
+                    int size = MIN(available, length - bytesWritten);
+                    bytesWritten += io->write(&data[bytesWritten], size);
+                }
+            } else {
+                wait(0.05);
+            }
+        } while (tmr.read_ms() <= timeout && bytesWritten < length);
+    } else {
+        for(int i = 0; i < vSpecial.size(); i++) {
+            //Write up to the special character, then write the special character
+            int size = vSpecial[i] - bytesWritten;
+            int currentWritten = io->write(&data[bytesWritten], size);
+            bytesWritten += currentWritten;
+            if(currentWritten != size) {
+                //Failed to write up to the special character.
+                return bytesWritten;
+            }
+            if(io->write(DLE) && io->write(data[bytesWritten])) {
+                bytesWritten++;
+            } else {
+                //Failed to write the special character.
+                return bytesWritten;
+            }
+        }
+
+        bytesWritten = io->write(&data[bytesWritten], length - bytesWritten);
+    }
+
+    return bytesWritten;
+}
+
+unsigned int UIP::readable()
+{
+    if(io == NULL) {
+        printf("[WARNING] MTSBufferedIO not set\r\n");
+        return 0;
+    }
+    if(!socketOpened && !io->readable()) {
+        printf("[WARNING] Socket is not open\r\n");
+        return 0;
+    }
+    return io->readable();
+}
+
+unsigned int UIP::writeable()
+{
+    if(io == NULL) {
+        printf("[WARNING] MTSBufferedIO not set\r\n");
+        return 0;
+    }
+    if(!socketOpened) {
+        printf("[WARNING] Socket is not open\r\n");
+        return 0;
+    }
+
+    return io->writeable();
+}
+
+bool UIP::setDeviceIP(std::string address)
+{
+    if (address.compare("DHCP") == 0) {
+        return true;
+    } else {
+        printf("[WARNING] Radio does not support static IPs, using DHCP.\n\r");
+        return false;
+    }
+}
+
+void UIP::reset()
+{
+    disconnect();
+    Code code = sendBasicCommand("AT#RESET=0", 10000);
+    if(code != SUCCESS) {
+        printf("[ERROR] Socket Modem did not accept RESET command\n\r");
+    } else {
+        printf("[WARNING] Socket Modem is resetting, allow 30 seconds for it to come back\n\r");
+    }
+}
+
+std::string UIP::getDeviceIP()
+{
+    return local_address;
+}
+
+Code UIP::echo(bool state)
+{
+    Code code;
+    if (state) {
+        code = sendBasicCommand("ATE0", 1000);
+        echoMode = (code == SUCCESS) ? false : echoMode;
+    } else {
+        code = sendBasicCommand("ATE1", 1000);
+        echoMode = (code == SUCCESS) ? true : echoMode;
+    }
+    return code;
+}
+
+Code UIP::setApn(const std::string& apn)
+{
+    Code code = sendBasicCommand("AT#APNSERV=\"" + apn + "\"", 1000);
+    if (code != SUCCESS) {
+        return code;
+    }
+    this->apn = apn;
+    return code;
+}
+
+
+Code UIP::setDns(const std::string& primary, const std::string& secondary)
+{
+    return sendBasicCommand("AT#DNS=1," + primary + "," + secondary, 1000);
+}
+
+bool UIP::ping(const std::string& address)
+{
+    char buffer[256] = {0};
+    Code code;
+
+    code = sendBasicCommand("AT#PINGREMOTE=\"" + address + "\"", 1000);
+    if (code != SUCCESS) {
+        return false;
+    }
+
+    sprintf(buffer, "AT#PINGNUM=%d", 1);
+    code = sendBasicCommand(buffer , 1000);
+    if (code != SUCCESS) {
+        return false;
+    }
+
+    sprintf(buffer, "AT#PINGDELAY=%d", PINGDELAY);
+    code = sendBasicCommand(buffer , 1000);
+    if (code != SUCCESS) {
+        return false;
+    }
+
+    std::string response;
+    for (int i = 0; i < PINGNUM; i++) {
+        response = sendCommand("AT#PING", PINGDELAY * 1000);
+        if (response.find("alive") != std::string::npos) {
+            return true;
+        }
+    }
+    return false;
+}
+
+Code UIP::setSocketCloseable(bool enabled)
+{
+    if(socketCloseable == enabled) {
+        return SUCCESS;
+    }
+
+    if(socketOpened) {
+        printf("[ERROR] socket is already opened. Can not set closeable\r\n");
+        return ERROR;
+    }
+
+    socketCloseable = enabled;
+
+    return SUCCESS;
+}
+
+Code UIP::sendBasicCommand(const std::string& command, unsigned int timeoutMillis, char esc)
+{
+    if(socketOpened) {
+        printf("[ERROR] socket is open. Can not send AT commands\r\n");
+        return ERROR;
+    }
+
+    string response = sendCommand(command, timeoutMillis, esc);
+    if (response.size() == 0) {
+        return NO_RESPONSE;
+    } else if (response.find("OK") != string::npos) {
+        return SUCCESS;
+    } else if (response.find("ERROR") != string::npos) {
+        return ERROR;
+    } else {
+        return FAILURE;
+    }
+}
+
+string UIP::sendCommand(const std::string& command, unsigned int timeoutMillis, char esc)
+{
+    if(io == NULL) {
+        printf("[ERROR] MTSBufferedIO not set\r\n");
+        return "";
+    }
+    if(socketOpened) {
+        printf("[ERROR] socket is open. Can not send AT commands\r\n");
+        return "";
+    }
+
+    io->rxClear();
+    io->txClear();
+    std::string result;
+
+    //Attempt to write command
+    if(io->write(command.data(), command.size(), timeoutMillis) != command.size()) {
+        //Failed to write command
+        if (command != "AT" && command != "at") {
+            printf("[ERROR] failed to send command to radio within %d milliseconds\r\n", timeoutMillis);
+        }
+        return "";
+    }
+
+    //Send Escape Character
+    if (esc != 0x00) {
+        if(io->write(esc, timeoutMillis) != 1) {
+            if (command != "AT" && command != "at") {
+                printf("[ERROR] failed to send character '%c' (0x%02X) to radio within %d milliseconds\r\n", esc, esc, timeoutMillis);
+            }
+            return "";
+        }
+    }
+
+    int timer = 0;
+    size_t previous = 0;
+    char tmp[256];
+    tmp[255] = 0;
+    bool started = !echoMode;
+    bool done = false;
+    do {
+        wait(0.1);
+        timer += 100;
+
+        previous = result.size();
+        //Make a non-blocking read call by passing timeout of zero
+        int size = io->read(tmp,255,0);    //1 less than allocated (timeout is instant)
+        if(size > 0) {
+            result.append(tmp, size);
+        }
+        if(!started) {
+            //In Echo Mode (Command will have echo'd + 2 characters for \r\n)
+            if(result.size() > command.size() + 2) {
+                started = true;
+            }
+        } else {
+            done =  (result.size() == previous);
+        }
+        if(timer >= timeoutMillis) {
+            if (command != "AT" && command != "at") {
+                printf("[WARNING] sendCommand [%s] timed out after %d milliseconds\r\n", command.c_str(), timeoutMillis);
+            }
+            done = true;
+        }
+    } while (!done);
+
+    return result;
+}
+
+Code UIP::sendSMS(const Sms& sms)
+{
+    return sendSMS(sms.phoneNumber, sms.message);
+}
+
+Code UIP::sendSMS(const std::string& phoneNumber, const std::string& message)
+{
+    Code code = sendBasicCommand("AT+CMGF=1", 1000);
+    if (code != SUCCESS) {
+        return code;
+    }
+    string cmd = "AT+CMGS=\"+";
+    cmd.append(phoneNumber);
+    cmd.append("\"");
+    string response1 = sendCommand(cmd, 1000);
+    if (response1.find('>') == string::npos) {
+        return NO_RESPONSE;
+    }
+    wait(.2);
+    string  response2 = sendCommand(message, 4000, CTRL_Z);
+    printf("SMS Response: %s\r\n", response2.c_str());
+    if (response2.find("+CMGS:") == string::npos) {
+        return FAILURE;
+    }
+    return SUCCESS;
+}
+
+std::vector<Cellular::Sms> UIP::getReceivedSms()
+{
+    int smsNumber = 0;
+    std::vector<Sms> vSms;
+    std::string received = sendCommand("AT+CMGL=\"ALL\"", 4000);
+    size_t pos = received.find("+CMGL: ");
+
+    while (pos != std::string::npos) {
+        Cellular::Sms sms;
+        std::string line(Text::getLine(received, pos, pos));
+        //printf("[DEBUG] Top of SMS Parse Loop. LINE[%s]\r\n", line.c_str());
+        if(line.find("+CMGL: ") == std::string::npos) {
+            continue;
+        }
+
+        //Start of SMS message
+        std::vector<std::string> vSmsParts = Text::split(line, ',');
+        if(vSmsParts.size() != 6) {
+            printf("[WARNING] Expected 6 commas. SMS[%d] DATA[%s]. Continuing ...\r\n", smsNumber, line.c_str());
+            continue;
+        }
+
+        sms.phoneNumber = vSmsParts[2];
+        sms.timestamp = vSmsParts[4] + ", " + vSmsParts[5];
+
+        if(pos == std::string::npos) {
+            printf("[WARNING] Expected SMS body. SMS[%d]. Leaving ...\r\n", smsNumber);
+            break;
+        }
+        //Check for the start of the next SMS message
+        size_t bodyEnd = received.find("\r\n+CMGL: ", pos);
+        if(bodyEnd == std::string::npos) {
+            //printf("[DEBUG] Parsing Last SMS. SMS[%d]\r\n", smsNumber);
+            //This must be the last SMS message
+            bodyEnd = received.find("\r\n\r\nOK", pos);
+        }
+
+        //Safety check that we found the boundary of this current SMS message
+        if(bodyEnd != std::string::npos) {
+            sms.message = received.substr(pos, bodyEnd - pos);
+        } else {
+            sms.message = received.substr(pos);
+            printf("[WARNING] Expected to find end of SMS list. SMS[%d] DATA[%s].\r\n", smsNumber, sms.message.c_str());
+        }
+        vSms.push_back(sms);
+        pos = bodyEnd;
+        //printf("[DEBUG] Parsed SMS[%d].  Starting Next at position [%d]\r\n", smsNumber, pos);
+        smsNumber++;
+    }
+    printf("Received %d SMS\r\n", smsNumber);
+    return vSms;
+}
+
+Code UIP::deleteOnlyReceivedReadSms()
+{
+    return sendBasicCommand("AT+CMGD=1,1", 1000);
+}
+
+Code UIP::deleteAllReceivedSms()
+{
+    return sendBasicCommand("AT+CMGD=1,4", 1000);
+}