Diff: UbloxUSBGSMModem.cpp

Revision:

1:71286b99c1cb

Child:

5:60b48a013e86

diff -r 328d98dd5c78 -r 71286b99c1cb UbloxUSBGSMModem.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/UbloxUSBGSMModem.cpp	Thu Oct 17 13:06:33 2013 +0300
@@ -0,0 +1,605 @@
+/* UbloxUSBGSMModem.cpp */
+/* Copyright (C) 2012 mbed.org, MIT License
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+ * and associated documentation files (the "Software"), to deal in the Software without restriction,
+ * including without limitation the rights to use, copy, modify, merge, publish, distribute,
+ * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all copies or
+ * substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
+ * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#define __DEBUG__ 3
+#ifndef __MODULE__
+#define __MODULE__ "UbloxUSBGSMModem.cpp"
+#endif
+
+#include "core/fwk.h"
+
+#include "UbloxUSBGSMModem.h"
+#include "UbloxGSMModemInitializer.h"
+#include "USBHost.h"
+
+UbloxUSBGSMModem::UbloxUSBGSMModem(PinName powerGatingPin /*= NC*/, bool powerGatingOnWhenPinHigh /* = true*/) :
+   m_dongle(),                              // Construct WANDongle: USB interface with two serial channels to the modem (USBSerialStream objects)
+   m_atStream(m_dongle.getSerial(1)),       // AT commands are sent down one serial channel.
+   m_pppStream(m_dongle.getSerial(0)),      // PPP connections are managed via another serial channel.
+   m_at(&m_atStream),                       // Construct ATCommandsInterface with the AT serial channel
+   m_sms(&m_at),                            // Construct SMSInterface with the ATCommandsInterface
+   m_ussd(&m_at),                           // Construct USSDInterface with the ATCommandsInterface
+   m_linkMonitor(&m_at),                    // Construct LinkMonitor with the ATCommandsInterface
+   m_ppp(&m_pppStream, DEFAULT_MSISDN_GSM), // Construct PPPIPInterface with the PPP serial channel
+   m_dongleConnected(false),                // Dongle is initially not ready for anything
+   m_ipInit(false),                         // PPIPInterface connection is initially down
+   m_smsInit(false),                        // SMSInterface starts un-initialised
+   m_ussdInit(false),                       // USSDInterface starts un-initialised 
+   m_linkMonitorInit(false),                // LinkMonitor subsystem starts un-initialised
+   m_atOpen(false),                         // ATCommandsInterface starts in a closed state
+   m_powerGatingPin(powerGatingPin),        // set power gating pin
+   m_powerGatingOnWhenPinHigh(powerGatingOnWhenPinHigh) // set state semantics for power gating pin
+{
+  USBHost* host = USBHost::getHostInst();
+  m_dongle.addInitializer(new UbloxGSMModemInitializer(host));
+  if( m_powerGatingPin != NC )
+  {
+    power(false); //Dongle will have to be powered on manually
+  }
+}
+
+class CREGProcessor : public IATCommandsProcessor
+{
+public:
+  CREGProcessor() : status(STATUS_REGISTERING)
+  {
+
+  }
+  enum REGISTERING_STATUS { STATUS_REGISTERING, STATUS_OK, STATUS_FAILED };
+  REGISTERING_STATUS getStatus()
+  {
+    return status;
+  }
+private:
+  virtual int onNewATResponseLine(ATCommandsInterface* pInst, const char* line)
+  {
+    int r;
+    if( sscanf(line, "+CREG: %*d,%d", &r) == 1 )
+    {
+      switch(r)
+      {
+      case 1:
+      case 5:
+        status = STATUS_OK;
+        break;
+      case 0:
+      case 2:
+        status = STATUS_REGISTERING;
+        break;
+      case 3:
+      default:
+        status = STATUS_FAILED;
+        break;
+      }
+    }
+    return OK;
+  }
+  virtual int onNewEntryPrompt(ATCommandsInterface* pInst)
+  {
+    return OK;
+  }
+  volatile REGISTERING_STATUS status;
+};
+
+#if 0
+class COPSProcessor : public IATCommandsProcessor
+{
+public:
+  COPSProcessor() : valid(false)
+  {
+    network[0] = '\0';
+    apn[0] = '\0';
+    bearer[0] = '\0';
+  }
+  char* getNetwork()
+  {
+    return network;
+  }
+  char* getAPN()
+  {
+    return apn;
+  }
+  char* getBearer()
+  {
+    return bearer;
+  }
+  bool isValid()
+  {
+    return valid;
+  }
+private:
+  virtual int onNewATResponseLine(ATCommandsInterface* pInst, const char* line)
+  {
+    int networkId;
+    int bearerId;
+    int s = sscanf(line, "+COPS: %*d,%*d,\"%d\",%d", &networkId, &bearerId);
+    if( s == 2 )
+    {
+      switch(networkId)
+      {
+      case 23415:
+        strcpy(network, "Vodafone UK");
+        strcpy(apn, "pp.vodafone.co.uk");
+        valid = true;
+        break;
+      case 20810:
+        strcpy(network, "SFR FR");
+        strcpy(apn, "websfr");
+        valid = true;
+        break;
+      default:
+        break;
+      }
+    }
+    else
+    {
+      return OK;
+    }
+    switch(bearerId)
+    {
+    case 0: strcpy(bearer, "GSM"); break;
+    case 1: strcpy(bearer, "GSM Compact"); break;
+    case 2: strcpy(bearer, "UTRAN"); break;
+    case 3: strcpy(bearer, "GSM w/EGPRS"); break;
+    case 4: strcpy(bearer, "UTRAN w/HSDPA"); break;
+    case 5: strcpy(bearer, "UTRAN w/HSUPA"); break;
+    case 6: strcpy(bearer, "UTRAN w/HSDPA and HSUPA"); break;
+    case 7: strcpy(bearer, "E-UTRAN"); break;
+
+    default:
+      break;
+    }
+    return OK;
+  }
+  virtual int onNewEntryPrompt(ATCommandsInterface* pInst)
+  {
+    return OK;
+  }
+  char network[24];
+  char bearer[24];
+  char apn[24];
+  volatile bool valid;
+};
+#endif
+
+int UbloxUSBGSMModem::connect(const char* apn, const char* user, const char* password)
+{
+  if( !m_ipInit )
+  {
+    m_ipInit = true;
+    m_ppp.init();
+  }
+  m_ppp.setup(user, password);
+
+  int ret = init();
+  if(ret)
+  {
+    return ret;
+  }
+
+  #if USE_ONE_PORT
+  m_smsInit = false; //SMS status reset
+  m_ussdInit = false; //USSD status reset
+  m_linkMonitorInit = false; //Link monitor status reset
+  #endif
+
+  ATCommandsInterface::ATResult result;
+
+  #if 0
+  //Get network info & select corresponding APN
+  COPSProcessor copsProcessor;
+  DBG("Get network info & select APN from DB");
+  ret = m_at.execute("AT+COPS=,2;+COPS?", &copsProcessor, &result); //Configure to get operator's info in numeric code & get operator's id
+  DBG("Result of command: Err code=%d", ret);
+  DBG("ATResult: AT return=%d (code %d)", result.result, result.code);
+
+  if(!copsProcessor.isValid())
+  {
+    WARN("Connected to an unknown network, try to connect with default parameters");
+    DBG("Connected with %s", copsProcessor.getBearer());
+  }
+  else
+  {
+    DBG("Connected to %s with %s", copsProcessor.getNetwork(), copsProcessor.getBearer());
+    char cmd[48];
+    int tries = 3;
+    sprintf(cmd, "AT+CGDCONT=1,\"IP\",\"%s\"", copsProcessor.getAPN());
+    do //Try 3 times because for some reasons it can fail with the K3772-Z dongle
+    {
+      ret = m_at.executeSimple(cmd, &result);
+      DBG("Result of command: Err code=%d", ret);
+    } while(ret && --tries);
+    DBG("ATResult: AT return=%d (code %d)", result.result, result.code);
+    DBG("APN set to %s", copsProcessor.getAPN());
+  }
+  #else
+  if(apn != NULL)
+  {
+    char cmd[48];
+    int tries = 30;
+    sprintf(cmd, "AT+CGDCONT=1,\"IP\",\"%s\"", apn);
+    do //Try 30 times because for some reasons it can fail *a lot* with the K3772-Z dongle
+    {
+      ret = m_at.executeSimple(cmd, &result);
+      DBG("Result of command: Err code=%d", ret);
+      if(ret)
+      {
+        Thread::wait(500);
+      }
+    } while(ret && --tries);
+    DBG("ATResult: AT return=%d (code %d)", result.result, result.code);
+    DBG("APN set to %s", apn);
+  }
+  #endif
+
+
+  //Connect
+  DBG("Connecting");
+  #if 0
+  ret = m_at.executeSimple("ATDT *99#", &result);
+  DBG("Result of command: Err code=%d", ret);
+  DBG("ATResult: AT return=%d (code %d)", result.result, result.code);
+  #endif
+  #if USE_ONE_PORT
+  m_at.close(); // Closing AT parser
+  m_atOpen = false; //Will need to be reinitialized afterwards
+  #endif
+
+  #if 0
+  DBG("AT Parser closed");
+  if( (ret!=NET_MOREINFO) || (result.result != ATCommandsInterface::ATResult::AT_CONNECT))
+  {
+    ERR("Could not connect");
+    return ret; //Could not connect
+  }
+  #endif
+  DBG("Connecting PPP");
+
+  ret = m_ppp.connect();
+  DBG("Result of connect: Err code=%d", ret);
+  return ret;
+}
+
+
+int UbloxUSBGSMModem::disconnect()
+{
+  DBG("Disconnecting from PPP");
+  int ret = m_ppp.disconnect();
+  if(ret)
+  {
+    ERR("Disconnect returned %d, still trying to disconnect", ret);
+  }
+
+  //Ugly but leave dongle time to recover
+  Thread::wait(500);
+
+  #if USE_ONE_PORT
+  ATCommandsInterface::ATResult result;
+  DBG("Starting AT thread");
+  ret = m_at.open();
+  if(ret)
+  {
+    return ret;
+  }
+  #endif
+
+  DBG("Trying to hangup");
+
+  #if 0 //Does not appear to work
+  int tries = 10;
+  do
+  {
+    ret = m_at.executeSimple("+++", &result, 1000);
+    DBG("Result of command: Err code=%d\n", ret);
+    DBG("ATResult: AT return=%d (code %d)\n", result.result, result.code);
+  } while(tries-- && ret);
+  if(!ret)
+  {
+    ret = m_at.executeSimple("ATH", &result);
+    DBG("Result of command: Err code=%d\n", ret);
+    DBG("ATResult: AT return=%d (code %d)\n", result.result, result.code);
+  }
+  #endif
+
+  #if USE_ONE_PORT
+  //Reinit AT parser
+  ret = m_at.init();
+  DBG("Result of command: Err code=%d\n", ret);
+  if(ret)
+  {
+    m_at.close(); // Closing AT parser
+    DBG("AT Parser closed, could not complete disconnection");
+    return NET_TIMEOUT;
+  }
+
+  #if 0
+  m_at.close(); // Closing AT parser
+  DBG("AT Parser closed");
+  #endif
+  #endif
+  return OK;
+}
+
+int UbloxUSBGSMModem::sendSM(const char* number, const char* message)
+{
+  int ret = init();
+  if(ret)
+  {
+    return ret;
+  }
+
+  if(!m_smsInit)
+  {
+    ret = m_sms.init();
+    if(ret)
+    {
+      return ret;
+    }
+    m_smsInit = true;
+  }
+
+  ret = m_sms.send(number, message);
+  if(ret)
+  {
+    return ret;
+  }
+
+  return OK;
+}
+
+int UbloxUSBGSMModem::getSM(char* number, char* message, size_t maxLength)
+{
+  int ret = init();
+  if(ret)
+  {
+    return ret;
+  }
+
+  if(!m_smsInit)
+  {
+    ret = m_sms.init();
+    if(ret)
+    {
+      return ret;
+    }
+    m_smsInit = true;
+  }
+
+  ret = m_sms.get(number, message, maxLength);
+  if(ret)
+  {
+    return ret;
+  }
+
+  return OK;
+}
+
+int UbloxUSBGSMModem::getSMCount(size_t* pCount)
+{
+  int ret = init();
+  if(ret)
+  {
+    return ret;
+  }
+
+  if(!m_smsInit)
+  {
+    ret = m_sms.init();
+    if(ret)
+    {
+      return ret;
+    }
+    m_smsInit = true;
+  }
+
+  ret = m_sms.getCount(pCount);
+  if(ret)
+  {
+    return ret;
+  }
+
+  return OK;
+}
+
+int UbloxUSBGSMModem::sendUSSD(const char* command, char* result, size_t maxLength)
+{
+  int ret = init();
+  if(ret)
+  {
+    return ret;
+  }
+
+  if(!m_ussdInit)
+  {
+    ret = m_ussd.init();
+    if(ret)
+    {
+      return ret;
+    }
+    m_ussdInit = true;
+  }
+
+  ret = m_ussd.send(command, result, maxLength);
+  if(ret)
+  {
+    return ret;
+  }
+
+  return OK;
+}
+
+int UbloxUSBGSMModem::getLinkState(int* pRssi, LinkMonitor::REGISTRATION_STATE* pRegistrationState, LinkMonitor::BEARER* pBearer)
+{
+  int ret = init();
+  if(ret)
+  {
+    return ret;
+  }
+  
+  if(!m_linkMonitorInit)
+  {
+    ret = m_linkMonitor.init();
+    if(ret)
+    {
+      return ret;
+    }
+    m_linkMonitorInit = true;
+  }
+
+  ret = m_linkMonitor.getState(pRssi, pRegistrationState, pBearer);
+  if(ret)
+  {
+    return ret;
+  }
+
+  return OK;
+}
+
+
+ATCommandsInterface* UbloxUSBGSMModem::getATCommandsInterface()
+{
+  return &m_at;
+}
+
+int UbloxUSBGSMModem::power(bool enable)
+{
+  if( m_powerGatingPin == NC )
+  {
+    return NET_INVALID; //A pin name has not been provided in the constructor
+  }
+
+  if(!enable) //Will force components to re-init
+  {
+    cleanup();
+  }
+  
+  DigitalOut powerGatingOut(m_powerGatingPin);
+  powerGatingOut = m_powerGatingOnWhenPinHigh?enable:!enable;
+
+  return OK;
+}
+
+bool UbloxUSBGSMModem::power()
+{
+  if( m_powerGatingPin == NC )
+  {
+    return true; //Assume power is always on 
+  }
+  
+  DigitalOut powerGatingOut(m_powerGatingPin);
+  return m_powerGatingOnWhenPinHigh?powerGatingOut:!powerGatingOut;
+}
+
+int UbloxUSBGSMModem::init()
+{
+  if( !m_dongleConnected )
+  {
+    if(!power())
+    {
+      //Obviously cannot initialize the dongle if it is disconnected...
+      ERR("Power is off");
+      return NET_INVALID;
+    }
+    m_dongleConnected = true;
+    while( !m_dongle.connected() )
+    {
+      m_dongle.tryConnect();
+      Thread::wait(10);
+    }
+  }
+
+  if(m_atOpen)
+  {
+    return OK;
+  }
+  
+  DBG("Starting AT thread if needed");
+  int ret = m_at.open();
+  if(ret)
+  {
+    return ret;
+  }
+  
+  DBG("Sending initialisation commands");
+  ret = m_at.init();
+  if(ret)
+  {
+    return ret;
+  }
+
+  if(m_dongle.getDongleType() == WAN_DONGLE_TYPE_UBX)
+  {
+    INFO("Using a u-blox LISA-U");
+  }
+  else
+  {
+    WARN("Using an Unknown Dongle");
+  }
+
+  ATCommandsInterface::ATResult result;
+
+  //Wait for network registration
+  CREGProcessor cregProcessor;
+  do
+  {
+    DBG("Waiting for network registration");
+    ret = m_at.execute("AT+CREG?", &cregProcessor, &result);
+    DBG("Result of command: Err code=%d\n", ret);
+    DBG("ATResult: AT return=%d (code %d)\n", result.result, result.code);
+    if(cregProcessor.getStatus() == CREGProcessor::STATUS_REGISTERING)
+    {
+      Thread::wait(3000);
+    }
+  } while(cregProcessor.getStatus() == CREGProcessor::STATUS_REGISTERING);
+  if(cregProcessor.getStatus() == CREGProcessor::STATUS_FAILED)
+  {
+    ERR("Registration denied");
+    return NET_AUTH;
+  }
+
+  m_atOpen = true;
+
+  return OK;
+}
+
+int UbloxUSBGSMModem::cleanup()
+{
+  if(m_ppp.isConnected())
+  {
+    WARN("Data connection is still open"); //Try to encourage good behaviour from the user
+    m_ppp.disconnect(); 
+  }
+  
+  m_smsInit = false;
+  m_ussdInit = false;
+  m_linkMonitorInit = false;
+  //We don't reset m_ipInit as PPPIPInterface::init() only needs to be called once
+  
+  if(m_atOpen)
+  {
+    m_at.close();
+    m_atOpen = false;
+  }
+  
+  m_dongle.disconnect();
+  m_dongleConnected = false;
+  
+  return OK;
+}
+