mbed official / CellularModem

Base library for cellular modem implementations

Dependencies:   Socket lwip-sys lwip

Dependents:   CellularUSBModem CellularUSBModem

Deprecated

This is an mbed 2 networking library. For mbed 5, the networking libraries have been revised to better support additional network stacks and thread safety here.

link/LinkMonitor.cpp@5:9a57892f206c, 2013-12-17 (annotated)

Committer:
mbed_official
Date:
Tue Dec 17 14:30:17 2013 +0000
Revision:
5:9a57892f206c
Parent:
1:4a23efdf0da9
Child:
7:0fd95907b5b3
Synchronized with git revision 8ec31ead8026189df63512b6d5ae69081b0aaf18



Full URL: https://github.com/mbedmicro/mbed/commit/8ec31ead8026189df63512b6d5ae69081b0aaf18/



Detection of modem when using serial port, CDMA version of linkmonitor

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bogdanm 1:4a23efdf0da9 1 /* LinkMonitor.cpp */
bogdanm 1:4a23efdf0da9 2 /* Copyright (C) 2012 mbed.org, MIT License
bogdanm 1:4a23efdf0da9 3 *
bogdanm 1:4a23efdf0da9 4 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
bogdanm 1:4a23efdf0da9 5 * and associated documentation files (the "Software"), to deal in the Software without restriction,
bogdanm 1:4a23efdf0da9 6 * including without limitation the rights to use, copy, modify, merge, publish, distribute,
bogdanm 1:4a23efdf0da9 7 * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
bogdanm 1:4a23efdf0da9 8 * furnished to do so, subject to the following conditions:
bogdanm 1:4a23efdf0da9 9 *
bogdanm 1:4a23efdf0da9 10 * The above copyright notice and this permission notice shall be included in all copies or
bogdanm 1:4a23efdf0da9 11 * substantial portions of the Software.
bogdanm 1:4a23efdf0da9 12 *
bogdanm 1:4a23efdf0da9 13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
bogdanm 1:4a23efdf0da9 14 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
bogdanm 1:4a23efdf0da9 15 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
bogdanm 1:4a23efdf0da9 16 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
bogdanm 1:4a23efdf0da9 17 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
bogdanm 1:4a23efdf0da9 18 */
bogdanm 1:4a23efdf0da9 19
bogdanm 1:4a23efdf0da9 20 #define __DEBUG__ 0
bogdanm 1:4a23efdf0da9 21 #ifndef __MODULE__
bogdanm 1:4a23efdf0da9 22 #define __MODULE__ "LinkMonitor.cpp"
bogdanm 1:4a23efdf0da9 23 #endif
bogdanm 1:4a23efdf0da9 24
bogdanm 1:4a23efdf0da9 25 #include "core/fwk.h"
bogdanm 1:4a23efdf0da9 26
bogdanm 1:4a23efdf0da9 27 #include "LinkMonitor.h"
bogdanm 1:4a23efdf0da9 28
bogdanm 1:4a23efdf0da9 29 #include <cstdio>
bogdanm 1:4a23efdf0da9 30 using std::sscanf;
bogdanm 1:4a23efdf0da9 31
bogdanm 1:4a23efdf0da9 32 #define DEFAULT_TIMEOUT 10000
bogdanm 1:4a23efdf0da9 33
bogdanm 1:4a23efdf0da9 34 LinkMonitor::LinkMonitor(ATCommandsInterface* pIf) : m_pIf(pIf), m_rssi(0), m_registrationState(REGISTRATION_STATE_UNKNOWN), m_bearer(BEARER_UNKNOWN)
bogdanm 1:4a23efdf0da9 35 {
mbed_official 5:9a57892f206c 36 m_gsm = true;
bogdanm 1:4a23efdf0da9 37 }
bogdanm 1:4a23efdf0da9 38
mbed_official 5:9a57892f206c 39 int LinkMonitor::init(bool gsm)
bogdanm 1:4a23efdf0da9 40 {
mbed_official 5:9a57892f206c 41 m_gsm = gsm;
mbed_official 5:9a57892f206c 42 if (m_gsm)
bogdanm 1:4a23efdf0da9 43 {
mbed_official 5:9a57892f206c 44 // we need to make sure that we setup the operator selection to be in 'numeric' format.
mbed_official 5:9a57892f206c 45 // 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
mbed_official 5:9a57892f206c 46 // setting up other network parameters in future.
mbed_official 5:9a57892f206c 47 DBG("LinkMonitor::init() being called. This should only happen once: executinging AT+COPS=0,2");
mbed_official 5:9a57892f206c 48 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
mbed_official 5:9a57892f206c 49 if(ret != OK)
mbed_official 5:9a57892f206c 50 {
mbed_official 5:9a57892f206c 51 WARN(" NET_PROTOCOL error from sending the AT+COPS command to the modem. ");
mbed_official 5:9a57892f206c 52 return NET_PROTOCOL;
mbed_official 5:9a57892f206c 53 }
bogdanm 1:4a23efdf0da9 54 }
bogdanm 1:4a23efdf0da9 55 return OK;
bogdanm 1:4a23efdf0da9 56 }
bogdanm 1:4a23efdf0da9 57
bogdanm 1:4a23efdf0da9 58 /*virtual*/ int LinkMonitor::onNewATResponseLine(ATCommandsInterface* pInst, const char* line)
bogdanm 1:4a23efdf0da9 59 {
bogdanm 1:4a23efdf0da9 60 DBG("Line is %s", line);
bogdanm 1:4a23efdf0da9 61 int v;
bogdanm 1:4a23efdf0da9 62 if( sscanf(line, "+CREG: %*d,%d", &v) >= 1 ) //Reg state is valid
bogdanm 1:4a23efdf0da9 63 {
bogdanm 1:4a23efdf0da9 64 DBG("+CREG %d", v);
bogdanm 1:4a23efdf0da9 65 switch( v )
bogdanm 1:4a23efdf0da9 66 {
bogdanm 1:4a23efdf0da9 67 case 0:
bogdanm 1:4a23efdf0da9 68 m_registrationState = REGISTRATION_STATE_UNKNOWN;
bogdanm 1:4a23efdf0da9 69 break;
bogdanm 1:4a23efdf0da9 70 case 1:
bogdanm 1:4a23efdf0da9 71 m_registrationState = REGISTRATION_STATE_HOME_NETWORK;
bogdanm 1:4a23efdf0da9 72 break;
bogdanm 1:4a23efdf0da9 73 case 2:
bogdanm 1:4a23efdf0da9 74 m_registrationState = REGISTRATION_STATE_REGISTERING;
bogdanm 1:4a23efdf0da9 75 break;
bogdanm 1:4a23efdf0da9 76 case 3:
bogdanm 1:4a23efdf0da9 77 m_registrationState = REGISTRATION_STATE_DENIED;
bogdanm 1:4a23efdf0da9 78 break;
bogdanm 1:4a23efdf0da9 79 case 4:
bogdanm 1:4a23efdf0da9 80 m_registrationState = REGISTRATION_STATE_NO_SIGNAL;
bogdanm 1:4a23efdf0da9 81 break;
bogdanm 1:4a23efdf0da9 82 case 5:
bogdanm 1:4a23efdf0da9 83 m_registrationState = REGISTRATION_STATE_ROAMING;
bogdanm 1:4a23efdf0da9 84 break;
bogdanm 1:4a23efdf0da9 85 default:
bogdanm 1:4a23efdf0da9 86 m_registrationState = REGISTRATION_STATE_UNKNOWN;
bogdanm 1:4a23efdf0da9 87 break;
bogdanm 1:4a23efdf0da9 88 }
bogdanm 1:4a23efdf0da9 89 }
bogdanm 1:4a23efdf0da9 90 else if( sscanf(line, "+COPS: %*d,%*d,\"%*[^\"]\",%d", &v) >= 1 )
bogdanm 1:4a23efdf0da9 91 {
bogdanm 1:4a23efdf0da9 92 DBG("+COPS %d", v);
bogdanm 1:4a23efdf0da9 93 switch( v )
bogdanm 1:4a23efdf0da9 94 {
bogdanm 1:4a23efdf0da9 95 case 0:
bogdanm 1:4a23efdf0da9 96 m_bearer = BEARER_GSM;
bogdanm 1:4a23efdf0da9 97 break;
bogdanm 1:4a23efdf0da9 98 case 2:
bogdanm 1:4a23efdf0da9 99 m_bearer = BEARER_UMTS;
bogdanm 1:4a23efdf0da9 100 break;
bogdanm 1:4a23efdf0da9 101 case 3:
bogdanm 1:4a23efdf0da9 102 m_bearer = BEARER_EDGE;
bogdanm 1:4a23efdf0da9 103 break;
bogdanm 1:4a23efdf0da9 104 case 4: //HSDPA
bogdanm 1:4a23efdf0da9 105 case 5: //HSUPA
bogdanm 1:4a23efdf0da9 106 case 6: //HSDPA + HSUPA
bogdanm 1:4a23efdf0da9 107 m_bearer = BEARER_HSPA;
bogdanm 1:4a23efdf0da9 108 break;
bogdanm 1:4a23efdf0da9 109 case 7:
bogdanm 1:4a23efdf0da9 110 m_bearer = BEARER_LTE;
bogdanm 1:4a23efdf0da9 111 break;
bogdanm 1:4a23efdf0da9 112 case 1: //GSM Compact
bogdanm 1:4a23efdf0da9 113 default:
bogdanm 1:4a23efdf0da9 114 m_bearer = BEARER_UNKNOWN;
bogdanm 1:4a23efdf0da9 115 break;
bogdanm 1:4a23efdf0da9 116 }
bogdanm 1:4a23efdf0da9 117 }
bogdanm 1:4a23efdf0da9 118 else if( sscanf(line, "+CSQ: %d,%*d", &v) >= 1 )
bogdanm 1:4a23efdf0da9 119 {
bogdanm 1:4a23efdf0da9 120 DBG("+CSQ %d", v);
bogdanm 1:4a23efdf0da9 121 if(v == 99) //Unknown
bogdanm 1:4a23efdf0da9 122 {
bogdanm 1:4a23efdf0da9 123 m_rssi = 0; //Unknown
bogdanm 1:4a23efdf0da9 124 }
bogdanm 1:4a23efdf0da9 125 else
bogdanm 1:4a23efdf0da9 126 {
bogdanm 1:4a23efdf0da9 127 m_rssi = -113 + 2*v;
bogdanm 1:4a23efdf0da9 128 }
bogdanm 1:4a23efdf0da9 129 }
bogdanm 1:4a23efdf0da9 130 return OK;
bogdanm 1:4a23efdf0da9 131 }
bogdanm 1:4a23efdf0da9 132
bogdanm 1:4a23efdf0da9 133 /*virtual*/ int LinkMonitor::onNewEntryPrompt(ATCommandsInterface* pInst)
bogdanm 1:4a23efdf0da9 134 {
bogdanm 1:4a23efdf0da9 135 return OK;
bogdanm 1:4a23efdf0da9 136 }
bogdanm 1:4a23efdf0da9 137
bogdanm 1:4a23efdf0da9 138 int LinkMonitor::getState(int* pRssi, REGISTRATION_STATE* pRegistrationState, BEARER* pBearer)
bogdanm 1:4a23efdf0da9 139 {
bogdanm 1:4a23efdf0da9 140 m_rssi = 0;
bogdanm 1:4a23efdf0da9 141 m_registrationState = REGISTRATION_STATE_UNKNOWN;
bogdanm 1:4a23efdf0da9 142 m_bearer = BEARER_UNKNOWN;
mbed_official 5:9a57892f206c 143 int ret = m_pIf->execute(m_gsm ? "AT+CREG?;+COPS?;+CSQ" : "AT+CREG?;+CSQ", this, NULL, DEFAULT_TIMEOUT); //Configure to get registration info & get it; get signal quality
bogdanm 1:4a23efdf0da9 144 if(ret != OK)
bogdanm 1:4a23efdf0da9 145 {
bogdanm 1:4a23efdf0da9 146 return NET_PROTOCOL;
bogdanm 1:4a23efdf0da9 147 }
bogdanm 1:4a23efdf0da9 148 *pRssi = m_rssi;
bogdanm 1:4a23efdf0da9 149 *pRegistrationState = m_registrationState;
bogdanm 1:4a23efdf0da9 150 *pBearer = m_bearer;
bogdanm 1:4a23efdf0da9 151 return OK;
bogdanm 1:4a23efdf0da9 152 }