Cellular library for MTS Socket Modem Arduino Shield devices from Multi-Tech Systems
Dependents: mtsas mtsas mtsas mtsas
Cellular/Cellular.cpp
- Committer:
- Mike Fiore
- Date:
- 2014-05-22
- Revision:
- 11:4e428f689069
- Parent:
- 10:c188cc05aed5
- Child:
- 16:1bc3e44d4746
File content as of revision 11:4e428f689069:
#include "mbed.h" #include "Cellular.h" #include "MTSText.h" #include "MTSLog.h" using namespace mts; bool Cellular::init(MTSBufferedIO* io) { if (io == NULL) { return false; } this->io = io; return true; } bool Cellular::configureSignals(unsigned int DCD, unsigned int DTR, unsigned int RESET) { //Set DCD - The radio will raise and lower this line if (DCD != NC) { dcd = new DigitalIn(PinName(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(PinName(DTR)); dtr->write(0); } //Set RESET - Set the hardware reset line to the radio if (RESET != NC) { resetLine = new DigitalOut(PinName(RESET)); } return true; } std::string Cellular::getRegistrationNames(Registration registration) { switch(registration) { case NOT_REGISTERED: return "NOT_REGISTERED"; case REGISTERED: return "REGISTERED"; case SEARCHING: return "SEARCHING"; case DENIED: return "DENIED"; case UNKNOWN: return "UNKNOWN"; case ROAMING: return "ROAMING"; default: return "UNKNOWN ENUM"; } } std::string Cellular::getRadioNames(Radio radio) { switch(radio) { case MTSMC_H5: return "MTSMC-H5"; case MTSMC_EV3: return "MTSMC-EV3"; case MTSMC_G3: return "MTSMC-G3"; case MTSMC_C2: return "MTSMC-C2"; case MTSMC_H5_IP: return "MTSMC-H5-IP"; case MTSMC_EV3_IP: return "MTSMC-EV3-IP"; case MTSMC_C2_IP: return "MTSMC-C2-IP"; default: return "UNKNOWN ENUM"; } } Code Cellular::test() { int i = 0; while (sendBasicCommand("AT", 1000) != SUCCESS) { i++; if (i >= 30) { logError("Could not talk to radio after 30 tries"); i = 0; } wait(1); } return SUCCESS; } int Cellular::getSignalStrength() { string response = sendCommand("AT+CSQ", 1000); if (response.find("OK") == string::npos) { return -1; } int start = response.find(':'); int stop = response.find(',', start); string signal = response.substr(start + 2, stop - start - 2); int value; sscanf(signal.c_str(), "%d", &value); return value; } Cellular::Registration Cellular::getRegistration() { string response = sendCommand("AT+CREG?", 5000); if (response.find("OK") == string::npos) { return UNKNOWN; } int start = response.find(','); int stop = response.find(' ', start); string regStat = response.substr(start + 1, stop - start - 1); int value; sscanf(regStat.c_str(), "%d", &value); switch (value) { case 0: return NOT_REGISTERED; case 1: return REGISTERED; case 2: return SEARCHING; case 3: return DENIED; case 4: return UNKNOWN; case 5: return ROAMING; } return UNKNOWN; } Code Cellular::setApn(const std::string& apn) { Code code = sendBasicCommand("AT#APNSERV=\"" + apn + "\"", 1000); if (code != SUCCESS) { return code; } this->apn = apn; return code; } Code Cellular::setDns(const std::string& primary, const std::string& secondary) { return sendBasicCommand("AT#DNS=1," + primary + "," + secondary, 1000); } Code Cellular::sendSMS(const Sms& sms) { return sendSMS(sms.phoneNumber, sms.message); } Code Cellular::sendBasicCommand(const std::string& command, unsigned int timeoutMillis, char esc) { if(socketOpened) { logError("socket is open. Can not send AT commands"); 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 Cellular::sendCommand(const std::string& command, unsigned int timeoutMillis, char esc) { if(io == NULL) { logError("MTSBufferedIO not set"); return ""; } if(socketOpened) { logError("socket is open. Can not send AT commands"); 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") { logError("failed to send command to radio within %d milliseconds", timeoutMillis); } return ""; } //Send Escape Character if (esc != 0x00) { if(io->write(esc, timeoutMillis) != 1) { if (command != "AT" && command != "at") { logError("failed to send character '%c' (0x%02X) to radio within %d milliseconds", 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") { logWarning("sendCommand [%s] timed out after %d milliseconds", command.c_str(), timeoutMillis); } done = true; } } while (!done); return result; } Code Cellular::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); logInfo("SMS Response: %s", response2.c_str()); if (response2.find("+CMGS:") == string::npos) { return FAILURE; } return SUCCESS; } std::vector<Cellular::Sms> Cellular::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)); if(line.find("+CMGL: ") == std::string::npos) { continue; } //Start of SMS message std::vector<std::string> vSmsParts = Text::split(line, ','); if(vSmsParts.size() != 6) { logWarning("Expected 6 commas. SMS[%d] DATA[%s]. Continuing ...", smsNumber, line.c_str()); continue; } sms.phoneNumber = vSmsParts[2]; sms.timestamp = vSmsParts[4] + ", " + vSmsParts[5]; if(pos == std::string::npos) { logWarning("Expected SMS body. SMS[%d]. Leaving ...", 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) { //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); logWarning("Expected to find end of SMS list. SMS[%d] DATA[%s].", smsNumber, sms.message.c_str()); } vSms.push_back(sms); pos = bodyEnd; smsNumber++; } logInfo("Received %d SMS", smsNumber); return vSms; } Code Cellular::deleteOnlyReceivedReadSms() { return sendBasicCommand("AT+CMGD=1,1", 1000); } Code Cellular::deleteAllReceivedSms() { return sendBasicCommand("AT+CMGD=1,4", 1000); }