Cellular library for MTS Socket Modem Arduino Shield devices from Multi-Tech Systems
Dependents: mtsas mtsas mtsas mtsas
Cellular/Cellular.cpp
- Committer:
- Vanger
- Date:
- 2014-08-01
- Revision:
- 48:3f9d82915e83
- Parent:
- 45:b9ead235ab7c
- Child:
- 50:144099030d9b
File content as of revision 48:3f9d82915e83:
#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) != MTS_SUCCESS) { i++; if (i >= 30) { logError("Could not talk to radio after 30 tries"); i = 0; } wait(1); } return MTS_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; } //Removed setAPN to be implemented in the individual cellular classes, //as UIP and EasyIP implement it in different ways. 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 MTS_ERROR; } string response = sendCommand(command, timeoutMillis, esc); if (response.size() == 0) { return MTS_NO_RESPONSE; } else if (response.find("OK") != string::npos) { return MTS_SUCCESS; } else if (response.find("ERROR") != string::npos) { return MTS_ERROR; } else { return MTS_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 ""; } } mbed::Timer tmr; char tmp[256]; tmp[255] = 0; bool done = false; tmr.start(); do { wait(0.05); //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); } //Check for a response to signify the completion of the AT command //OK, ERROR, CONNECT are the 3 most likely responses if(result.size() > (command.size() + 2)) { if(result.find("OK") != std::string::npos) { //Found OK done = true; } else if (result.find("ERROR") != std::string::npos) { //Found ERROR done = true; } else if (result.find("NO CARRIER") != std::string::npos) { //Found NO CARRIER done = true; } else if (result.find("RING") != std::string::npos) { done = true; } else if (result.find("BUSY") != std::string::npos) { done = true; } else if (result.find("NO ANSWER") != std::string::npos) { done = true; } if (command.find("AT+CMGS=") != string::npos) { if (result.find('>') != string::npos) { done = true; } } if(type == MTSMC_H5 || type == MTSMC_G3 || type == MTSMC_EV3 || type == MTSMC_C2) { if (result.find("CONNECT") != std::string::npos) { //Found CONNECT //Could add socketOpened flag check here if CONNECT is found done = true; } else if(result.find("NO DIALTONE") != std::string::npos) { done = true; } } else if (type == MTSMC_H5_IP || type == MTSMC_EV3_IP || type == MTSMC_C2_IP) { if (result.find("Ok_Info_") != std::string::npos) { done = true; } } } if(tmr.read_ms() >= 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) { string csmp; if (type == MTSMC_H5_IP || type == MTSMC_H5) { csmp = "AT+CSMP=17,167,0,0"; } else if (type == MTSMC_EV3_IP || type == MTSMC_EV3 || type == MTSMC_C2_IP || type == MTSMC_C2) { csmp = "AT+CSMP=,4098,0,2"; } else if (type == MTSMC_G3) { } else { logError("unknown radio type [%d]", type); return MTS_FAILURE; } Code code = sendBasicCommand("AT+CMGF=1", 1000); if (code != MTS_SUCCESS) { logError("CMGF failed"); return code; } code = sendBasicCommand(csmp, 1000); if (code != MTS_SUCCESS) { logError("CSMP failed [%s]", getRadioNames(type).c_str()); return code; } string cmd = "AT+CMGS=\""; cmd.append("+"); cmd.append(phoneNumber); cmd.append("\",145"); for (int i = 0; i < 5; i++) { string response1 = sendCommand(cmd, 2000); if (response1.find('>') != string::npos) { break; } if (i >= 5) { logError("CMGS phone number failed"); return MTS_NO_RESPONSE; } wait(1); } wait(.2); string response2 = sendCommand(message, 4000, CTRL_Z); logInfo("SMS Response: [%s]", response2.c_str()); if ((response2.find("+CMGS:") == string::npos) || (response2.find("ERROR") != std::string::npos)) { logError("CMGS message failed"); return MTS_FAILURE; } return MTS_SUCCESS; } std::vector<Cellular::Sms> Cellular::getReceivedSms() { int smsNumber = 0; std::vector<Sms> vSms; std::string received; size_t pos; Code code = sendBasicCommand("AT+CMGF=1", 1000); if (code != MTS_SUCCESS) { logError("CMGF failed"); return vSms; } received = sendCommand("AT+CMGL=\"ALL\"", 5000); 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 (type == MTSMC_H5_IP || type == MTSMC_H5) { /* format for H5 and H5-IP radios * <index>, <status>, <oa>, <alpha>, <scts> * scts contains a comma, so splitting on commas should give us 6 items */ if(vSmsParts.size() != 6) { logWarning("Expected 5 commas. SMS[%d] DATA[%s]. Continuing ...", smsNumber, line.c_str()); continue; } sms.phoneNumber = vSmsParts[2]; sms.timestamp = vSmsParts[4] + ", " + vSmsParts[5]; } else if (type == MTSMC_EV3_IP || type == MTSMC_EV3 || type == MTSMC_C2_IP || type == MTSMC_C2) { /* format for EV3 and EV3-IP radios * <index>, <status>, <oa>, <callback>, <date> * splitting on commas should give us 5 items */ if(vSmsParts.size() != 5) { logWarning("Expected 4 commas. SMS[%d] DATA[%s]. Continuing ...", smsNumber, line.c_str()); continue; } sms.phoneNumber = vSmsParts[2]; /* timestamp is in a nasty format * YYYYMMDDHHMMSS * nobody wants to try and decipher that, so format it nicely * YY/MM/DD,HH:MM:SS */ string s = vSmsParts[4]; sms.timestamp = s.substr(2,2) + "/" + s.substr(4,2) + "/" + s.substr(6,2) + ", " + s.substr(8,2) + ":" + s.substr(10,2) + ":" + s.substr(12,2); } 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); }