PHS module SMA-01 library. see: https://developer.mbed.org/users/phsfan/notebook/abitusbmodem/
Dependencies: Socket lwip-sys lwip
Dependents: AbitUSBModem_HTTPTest AbitUSBModem_MQTTTest AbitUSBModem_WebsocketTest AbitUSBModem_SMSTest
Fork of VodafoneUSBModem by
Diff: ussd/USSDInterface.cpp
- Revision:
- 8:04b6a042595f
- Parent:
- 0:3b2f052c333b
- Child:
- 12:66dc2c8eba2d
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/ussd/USSDInterface.cpp Tue Jun 26 13:44:59 2012 +0000 @@ -0,0 +1,152 @@ +/* USSDInterface.cpp */ +/* +Copyright (C) 2012 ARM Limited. + +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__ 4 +#ifndef __MODULE__ +#define __MODULE__ "USSDInterface.cpp" +#endif + +#include "core/fwk.h" + +#include "USSDInterface.h" + +#include <cstdio> + +#define DEFAULT_TIMEOUT 10000 +#define USSD_TIMEOUT 15000 + +USSDInterface::USSDInterface(ATCommandsInterface* pIf) : m_pIf(pIf), m_responseMtx(), m_responseSphre(1), m_result(NULL), m_maxResultLength(0) +{ + m_responseSphre.wait(0); //Take ownership of the semaphore + m_pIf->registerEventsHandler(this); //Add us to the unsolicited result codes handlers +} + +int USSDInterface::init() +{ + DBG("Initialization done"); + return OK; +} + +int USSDInterface::send(const char* command, char* result, size_t maxLength) +{ + if (strlen(command) > 20) //Prevent buffer overflow + { + return NET_TOOSMALL; + } + + m_responseMtx.lock(); + m_result = result; + m_maxResultLength = maxLength; + m_responseMtx.unlock(); + + m_responseSphre.wait(0); //Make sure there is not a pending result that needs to be discarded + + DBG("Send USSD command & register for unsolicited result codes"); + //Send USSD command to the network + char cmd[32]; + std::sprintf(cmd, "AT+CUSD=1,\"%s\"", command); + int ret = m_pIf->executeSimple(cmd, NULL, DEFAULT_TIMEOUT); + if( ret != OK ) + { + return NET_PROTOCOL; + } + + //Now wait for response + int res = m_responseSphre.wait(USSD_TIMEOUT); + + //Reset data + m_responseMtx.lock(); + m_result = NULL; + m_maxResultLength = 0; + m_responseMtx.unlock(); + + if(res <= 0) + { + DBG("No result received"); + ret = m_pIf->executeSimple("AT+CUSD=2", NULL, DEFAULT_TIMEOUT); //Cancel command + if( ret != OK ) + { + return NET_PROTOCOL; + } + return NET_TIMEOUT; + } + + DBG("Result received: %s", result); + + return OK; + +} + +/*virtual*/ bool USSDInterface::isATCodeHandled(const char* atCode) //Is this AT code handled +{ + DBG("AT code is %s", atCode); + if( strcmp("+CUSD", atCode) == 0 ) + { + return true; + } + + DBG("Not handled"); + return false; +} + +/*virtual*/ void USSDInterface::onDispatchStart() +{ + + +} + +/*virtual*/ void USSDInterface::onDispatchStop() +{ + +} + +/*virtual*/ void USSDInterface::onEvent(const char* atCode, const char* evt) +{ + if( strcmp("+CUSD", atCode) != 0 ) + { + return; //Not supported + } + + char* pStart = (char*) strchr(evt,'\"'); + if(pStart==NULL) + { + return; //Invalid/incomplete response + } + pStart++; //Point to first char of response + char* pEnd = (char*) strchr(pStart,'\"'); + if(pEnd==NULL) + { + return; //Invalid/incomplete response + } + m_responseMtx.lock(); + if(m_maxResultLength == 0) //No pending command + { + m_responseMtx.unlock(); + return; + } + size_t cpyLen = MIN( pEnd - pStart, m_maxResultLength - 1 ); + memcpy(m_result, pStart, cpyLen); + m_result[cpyLen] = '\0'; + m_responseMtx.unlock(); + m_responseSphre.release(); //Signal user thread that response is ready +}