Diff: link/LinkMonitor.cpp

Revision:

1:4a23efdf0da9

Child:

5:9a57892f206c

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/link/LinkMonitor.cpp	Thu Oct 17 12:29:05 2013 +0300
@@ -0,0 +1,148 @@
+/* LinkMonitor.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__ 0
+#ifndef __MODULE__
+#define __MODULE__ "LinkMonitor.cpp"
+#endif
+
+#include "core/fwk.h"
+
+#include "LinkMonitor.h"
+
+#include <cstdio>
+using std::sscanf;
+
+#define DEFAULT_TIMEOUT 10000
+
+LinkMonitor::LinkMonitor(ATCommandsInterface* pIf) : m_pIf(pIf), m_rssi(0), m_registrationState(REGISTRATION_STATE_UNKNOWN), m_bearer(BEARER_UNKNOWN)
+{
+
+}
+
+int LinkMonitor::init()
+{
+  // we need to make sure that we setup the operator selection to be in 'numeric' format.
+  // i.e. it is made up of a network and country code when returned by the modem e.g. Operator = 23415. This allows easy logic parsing for
+  // setting up other network parameters in future.
+  DBG("LinkMonitor::init() being called. This should only happen once: executinging AT+COPS=0,2");  
+  int ret = m_pIf->executeSimple("AT+COPS=0,2", NULL, DEFAULT_TIMEOUT); //Configure to set the operator string to Country Code and mobile network code
+  if(ret != OK)
+  {
+    WARN(" NET_PROTOCOL error from sending the AT+COPS command to the modem. ");
+    return NET_PROTOCOL;
+  }
+  return OK;
+}
+
+/*virtual*/ int LinkMonitor::onNewATResponseLine(ATCommandsInterface* pInst, const char* line)
+{
+  DBG("Line is %s", line);
+  int v;
+  if( sscanf(line, "+CREG: %*d,%d", &v) >= 1 ) //Reg state is valid
+  {
+    DBG("+CREG %d", v);
+    switch( v )
+    {
+      case 0:
+        m_registrationState = REGISTRATION_STATE_UNKNOWN;
+        break;
+      case 1:
+        m_registrationState = REGISTRATION_STATE_HOME_NETWORK;
+        break;
+      case 2:
+        m_registrationState = REGISTRATION_STATE_REGISTERING;
+        break;
+      case 3:
+        m_registrationState = REGISTRATION_STATE_DENIED;  
+        break;
+      case 4:
+        m_registrationState = REGISTRATION_STATE_NO_SIGNAL;  
+        break;        
+      case 5:
+        m_registrationState = REGISTRATION_STATE_ROAMING;  
+        break;
+      default:
+        m_registrationState = REGISTRATION_STATE_UNKNOWN;  
+        break;
+    }
+  }
+  else if( sscanf(line, "+COPS: %*d,%*d,\"%*[^\"]\",%d", &v) >= 1 )
+  {
+    DBG("+COPS %d", v);
+    switch( v )
+    {
+      case 0:
+        m_bearer = BEARER_GSM;
+        break;
+      case 2:
+        m_bearer = BEARER_UMTS;
+        break;
+      case 3:
+        m_bearer = BEARER_EDGE;
+        break;
+      case 4: //HSDPA
+      case 5: //HSUPA
+      case 6: //HSDPA + HSUPA
+        m_bearer = BEARER_HSPA;
+        break;
+      case 7:
+        m_bearer = BEARER_LTE;
+        break;  
+      case 1: //GSM Compact
+      default:
+        m_bearer = BEARER_UNKNOWN;
+        break;
+    }
+  }
+  else if( sscanf(line, "+CSQ: %d,%*d", &v) >= 1 )
+  {
+    DBG("+CSQ %d", v);
+    if(v == 99) //Unknown
+    {
+      m_rssi = 0; //Unknown
+    }
+    else
+    {
+      m_rssi = -113 + 2*v;
+    }
+  }
+  return OK;
+}
+
+/*virtual*/ int LinkMonitor::onNewEntryPrompt(ATCommandsInterface* pInst)
+{
+  return OK;
+}
+
+int LinkMonitor::getState(int* pRssi, REGISTRATION_STATE* pRegistrationState, BEARER* pBearer)
+{
+  m_rssi = 0;
+  m_registrationState = REGISTRATION_STATE_UNKNOWN;
+  m_bearer = BEARER_UNKNOWN;
+  int ret = m_pIf->execute("AT+CREG?;+COPS?;+CSQ", this, NULL, DEFAULT_TIMEOUT); //Configure to get registration info & get it; get signal quality
+  if(ret != OK)
+  {
+    return NET_PROTOCOL;
+  }
+  *pRssi = m_rssi;
+  *pRegistrationState = m_registrationState;
+  *pBearer = m_bearer;
+  return OK;
+}