projects/smsdaemon/ModemTransceiver.cpp

/* using http://sourceforge.net/projects/libserial/
 */

#include <iostream>

#include <string>
#include <cstring>
#include <stdexcept>

#include <sys/time.h>
#include <time.h>


#include "SerialPort.h"

#include "GsmModem.h"

#include "util.h"
#include "common.h"


using namespace std;


GsmModem::GsmModem(SerialPort& serialport)
: m_port(serialport)
{
        Init();
}


string GsmModem::GetResponse()
{

        SerialPort::DataBuffer buf;
        m_port.Read(buf);

        buf.push_back(0);

        std::string str((char*) &buf[0]);

        return str;
}


string GsmModem::Command(string command, string term)
{
        time_t  start,now;
        start = time(0);

        if (term != "> ")
                command.append("\r"); //Dont append CarriageReturn if sending SMS

        m_port.Write(command);

        Util::Sleep(1);
        string response = GetResponse();

        unsigned int tlen = term.length();
        while ( 1 )
        {
                if (response.length() >= tlen)
                {
                        if (response.substr(response.length()-tlen,tlen) == term)
                                break;
                }

                response += GetResponse();
                Util::Sleep(1);

        now = time(0);
        if ( (now-start) > 10 )
        {
                Common::instance()->logMessage( string("GsmModem::Command time out --") + command);
            break;
        }
        }

        Util::Sleep(5);

//      cout  << response.length() << ":" << response << endl;
//      DumpString(response);

        return response;
}

vector<SMS> GsmModem::ReadSms(bool readAll)
{
        const string search = "+CMGL: ";
        std::string cmd = "AT+CMGL";
        if (readAll)
                cmd.append("=ALL");

        string result = Command(cmd);
                
        vector<SMS> retval;
        if (result.find(search) == string::npos)
                return retval;

        result = result.substr(2, result.length() - 8); //remove trailing "\r\nOK\r\n" and initial "\r\n"


        while ( 1 )
        {
                unsigned int endpos = result.find(search,5);

                
                string sms_entry = result.substr(0,endpos);
                retval.push_back( SMS::FromRawString(sms_entry) );;

                if (endpos == string::npos)
                        break;
        
                result = result.substr(endpos, result.length() - endpos);
        }

        return retval;
}

void GsmModem::SendSms(string to, string message)
{
        Common::instance()->logMessage( string("SMS send to ") + to);

        Command("AT+CMGF=1");///Allways telling the format makes the application more stable
        Util::Sleep(2);

        string line1 = "AT+CMGS=";
        line1.append(to);
        line1.append("\r");

        Command(line1,"> ");


        message.append("\032"); // \032 == Ctrl+Z

        Command( message.substr(0,160) ); //In textmode limit to 160 bytes


        Util::Sleep(50); //Give the modem some time to send the sms and be ready again
        Common::instance()->smsCounter.outgoing++;
}

void GsmModem::DeleteSms(std::string smsIndex)
{
        string cmd = "AT+CMGD=";
        cmd.append(smsIndex);
        Command(cmd);
}

int  GsmModem::DeleteAllSms()
{
        vector<SMS> sms = ReadSms(true);

        for (unsigned int i= 0; i<sms.size(); ++i)
        {
                DeleteSms( sms[i].sms_index);
        }
        return sms.size();
}


void GsmModem::Init()
{
        Command( "ATZ" ); //Reset any previous setup
        Command( "AT\\Q3" ); //Hardware flow control

        Command( "ATE0" ); //Disable echo

        Command( "AT+CMGF=1" ); //Set SMS format to text

        Command ("AT^SM20=0,0" ); //No SM20 compability

        //Set RealTimeClock ??
        
        //Enter pin code ??
}
1	/* using http://sourceforge.net/projects/libserial/
2	*/
3
4	#include <iostream>
5
6	#include <string>
7	#include <cstring>
8	#include <stdexcept>
9
10	#include <sys/time.h>
11	#include <time.h>
12
13
14	#include "SerialPort.h"
15
16	#include "GsmModem.h"
17
18	#include "util.h"
19	#include "common.h"
20
21
22	using namespace std;
23
24
25
26	GsmModem::GsmModem(SerialPort& serialport)
27	: m_port(serialport)
28	{
29	Init();
30	}
31
32
33
34	string GsmModem::GetResponse()
35	{
36
37	SerialPort::DataBuffer buf;
38	m_port.Read(buf);
39
40	buf.push_back(0);
41
42	std::string str((char*) &buf[0]);
43
44	return str;
45	}
46
47
48	string GsmModem::Command(string command, string term)
49	{
50	time_t start,now;
51	start = time(0);
52
53	if (term != "> ")
54	command.append("\r"); //Dont append CarriageReturn if sending SMS
55
56	m_port.Write(command);
57
58	Util::Sleep(1);
59	string response = GetResponse();
60
61	unsigned int tlen = term.length();
62	while ( 1 )
63	{
64	if (response.length() >= tlen)
65	{
66	if (response.substr(response.length()-tlen,tlen) == term)
67	break;
68	}
69
70	response += GetResponse();
71	Util::Sleep(1);
72
73	now = time(0);
74	if ( (now-start) > 10 )
75	{
76	Common::instance()->logMessage( string("GsmModem::Command time out --") + command);
77	break;
78	}
79	}
80
81	Util::Sleep(5);
82
83	// cout << response.length() << ":" << response << endl;
84	// DumpString(response);
85
86	return response;
87	}
88
89	vector<SMS> GsmModem::ReadSms(bool readAll)
90	{
91	const string search = "+CMGL: ";
92	std::string cmd = "AT+CMGL";
93	if (readAll)
94	cmd.append("=ALL");
95
96	string result = Command(cmd);
97
98	vector<SMS> retval;
99	if (result.find(search) == string::npos)
100	return retval;
101
102	result = result.substr(2, result.length() - 8); //remove trailing "\r\nOK\r\n" and initial "\r\n"
103
104
105	while ( 1 )
106	{
107	unsigned int endpos = result.find(search,5);
108
109
110	string sms_entry = result.substr(0,endpos);
111	retval.push_back( SMS::FromRawString(sms_entry) );;
112
113	if (endpos == string::npos)
114	break;
115
116	result = result.substr(endpos, result.length() - endpos);
117	}
118
119	return retval;
120	}
121
122	void GsmModem::SendSms(string to, string message)
123	{
124	Common::instance()->logMessage( string("SMS send to ") + to);
125
126	Command("AT+CMGF=1");///Allways telling the format makes the application more stable
127	Util::Sleep(2);
128
129	string line1 = "AT+CMGS=";
130	line1.append(to);
131	line1.append("\r");
132
133	Command(line1,"> ");
134
135
136	message.append("\032"); // \032 == Ctrl+Z
137
138	Command( message.substr(0,160) ); //In textmode limit to 160 bytes
139
140
141	Util::Sleep(50); //Give the modem some time to send the sms and be ready again
142	Common::instance()->smsCounter.outgoing++;
143	}
144
145	void GsmModem::DeleteSms(std::string smsIndex)
146	{
147	string cmd = "AT+CMGD=";
148	cmd.append(smsIndex);
149	Command(cmd);
150	}
151
152	int GsmModem::DeleteAllSms()
153	{
154	vector<SMS> sms = ReadSms(true);
155
156	for (unsigned int i= 0; i<sms.size(); ++i)
157	{
158	DeleteSms( sms[i].sms_index);
159	}
160	return sms.size();
161	}
162
163
164
165	void GsmModem::Init()
166	{
167	Command( "ATZ" ); //Reset any previous setup
168	Command( "AT\\Q3" ); //Hardware flow control
169
170	Command( "ATE0" ); //Disable echo
171
172	Command( "AT+CMGF=1" ); //Set SMS format to text
173
174	Command ("AT^SM20=0,0" ); //No SM20 compability
175
176	//Set RealTimeClock ??
177
178	//Enter pin code ??
179	}