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data.cpp
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data.cpp
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/*
* Project: EARComm - Emergency Alert Radio Tool
* Name: data.cpp
* Description: Serial communications and data parsing
* Copyright: (c) 2010 Doug Kelly
*
* EARComm is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* EARComm is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with EARComm. If not, see <http://www.gnu.org/licenses/>.
*/
#include <libserialport.h>
#include "data.h"
#include <stdexcept>
#include <unistd.h>
using namespace std;
static const int TIMEOUT = 50;
Data::Data() : config(NULL), port(NULL), pauseRead(true)
{
}
Data::~Data()
{
closePort();
}
int Data::findEAR()
{
int EARtype = -1;
std::vector<std::string> ports = listPorts();
for (std::vector<std::string>::iterator it = ports.begin(); it != ports.end(); it++)
{
if (SP_OK == openPort(*it)) {
if ((EARtype = detectEAR()) != -1)
{
return EARtype;
}
}
closePort();
}
return -1;
}
std::vector<std::string> Data::listPorts()
{
struct sp_port** portList;
std::vector<std::string> result;
if (SP_OK != sp_list_ports(&portList))
{
cout << "Unable to enumerate ports" << endl;
return result;
}
int i = 0;
sp_port* currentPort = portList[i];
while (currentPort != NULL)
{
char* portName = sp_get_port_name(currentPort);
result.push_back(std::string(portName));
i++;
currentPort = portList[i];
}
sp_free_port_list(portList);
return result;
}
string Data::readData(QProgressBar &bar)
{
string buf;
pauseRead = true;
char c=0;
bool readFailed=true;
sp_return res;
for (int i=0;i<10;i++)
{
if (SP_OK != sp_flush(port, SP_BUF_BOTH))
{
cout << "Warning: Could not flush buffers!" << endl;
}
if ((res = sp_nonblocking_write(port, "d", 1)) < SP_OK)
{
cout << "Unable to write to port: " << res << endl;
pauseRead = false;
return buf;
}
for(int j=0;j<512;j++)
{
if ((res = sp_blocking_read(port, &c, 1, TIMEOUT)) < SP_OK)
{
cout << "Unable to read data from port: " << res << endl;
}
if (res == 0 && readFailed == true)
{
j=512;
usleep(500);
}
else
{
readFailed=false;
buf.append(1, c);
bar.setValue((j+1)*100/512);
QApplication::processEvents();
}
}
if (!readFailed)
{
i=10;
}
}
cout << buf << endl;
if (SP_OK != sp_flush(port, SP_BUF_BOTH))
{
cout << "Warning: Could not flush buffers!" << endl;
}
pauseRead = false;
return buf;
}
int Data::detectEAR()
{
string buf;
pauseRead = true;
char c=0;
bool readFailed=true;
sp_return res;
for(int i=0;i<10;i++)
{
if (SP_OK != sp_flush(port, SP_BUF_BOTH))
{
cout << "Warning: Could not flush buffers!" << endl;
}
if ((res = sp_nonblocking_write(port, "?", 1)) < SP_OK)
{
cout << "Unable to write to port: " << res << endl;
pauseRead = false;
return -1;
}
for(int j=0;j<3;j++)
{
if ((res = sp_blocking_read(port, &c, 1, TIMEOUT)) < SP_OK)
{
cout << "Unable to read data from port: " << res << endl;
}
if (res == 0 && readFailed==true)
{
usleep(50);
break;
}
else if (c != 0)
{
readFailed=false;
buf.append(1, c);
}
if (buf.length() == 2)
{
break;
}
}
if(!readFailed)
{
i=10;
}
}
cout << buf << endl;
// Wait for the additional CR/LF to come in.
usleep(500);
char discard[2];
sp_blocking_read(port, discard, 2, TIMEOUT);
if (SP_OK != sp_flush(port, SP_BUF_BOTH))
{
cout << "Warning: Could not flush buffers!" << endl;
}
pauseRead = false;
if(buf == "WX")
{
cout << "Got Weather EAR" << endl;
return WX_EAR;
}
else if(buf == "FM")
{
cout << "Got FM EAR" << endl;
return FM_EAR;
}
else if(buf == "F2")
{
cout << "Got FM EAR rev 2" << endl;
return F2_EAR;
}
return -1;
}
bool Data::loadFIPS()
{
ifstream data;
string line;
string::size_type pos, pos2;
sFIPS tmp;
data.open("fips.dat");
if(!data)
{
cout << "Error opening FIPS file" << endl;
return false;
}
while(getline(data, line))
{
pos = line.find(",", 0);
tmp.state = line.substr(0, pos);
pos2 = line.find(",", pos+1);
tmp.stateCode = line.substr(pos+1, 2);
pos = line.find(",", pos2+1);
tmp.countyCode = line.substr(pos2+1, pos-pos2-1);
tmp.county = line.substr(pos+1);
fips.push_back(tmp);
}
return true;
}
bool Data::loadEvents()
{
ifstream data;
string line;
string::size_type pos;
sEvent tmp;
data.open("events.dat");
if(!data)
{
cout << "Error opening events file" << endl;
return false;
}
while(getline(data, line))
{
pos = line.find(",", 0);
tmp.eventCode = line.substr(0, pos);
tmp.eventText = line.substr(pos+1);
events.push_back(tmp);
}
return true;
}
void Data::sendTest()
{
sp_return res;
if (SP_OK != sp_flush(port, SP_BUF_BOTH))
{
cout << "Warning: Could not flush buffers!" << endl;
}
if ((res = sp_nonblocking_write(port, "t", 1)) < SP_OK)
{
cout << "Unable to write to port: " << res << endl;
return;
}
}
void Data::programData(std::string data, QProgressBar &bar)
{
pauseRead = true;
char c=0;
bool readFailed=true;
sp_return res;
for(int i=0;i<10;i++)
{
if (SP_OK != sp_flush(port, SP_BUF_BOTH))
{
cout << "Warning: Could not flush buffers!" << endl;
}
if ((res = sp_nonblocking_write(port, "p", 1)) < SP_OK)
{
cout << "Unable to write to port: " << res << endl;
pauseRead = false;
return;
}
if ((res = sp_blocking_read(port, &c, 1, TIMEOUT)) < SP_OK)
{
cout << "Unable to read data from port: " << res << endl;
}
if (res == 0 && readFailed == true)
{
usleep(50);
}
else if (c == '!')
{
readFailed=false;
i=10;
}
}
if(readFailed)
{
cout << "Failed writing to device" << endl;
if (SP_OK != sp_flush(port, SP_BUF_BOTH))
{
cout << "Warning: Could not flush buffers!" << endl;
}
pauseRead = false;
return;
}
for(int i=0;i<512;i++)
{
if ((res = sp_nonblocking_write(port, &(data[i]), 1)) <= SP_OK)
{
cout << "Unable to write to port: " << res << " char: " << i << endl;
}
if (SP_OK != sp_drain(port))
{
cout << "Could not flush output buffer" << endl;
}
bar.setValue((i+1)*100/512);
QApplication::processEvents();
usleep(10000);
}
readFailed=true;
for(int i=0;i<10;i++)
{
if ((res = sp_blocking_read(port, &c, 1, TIMEOUT)) < SP_OK)
{
cout << "Unable to read data from port: " << res << endl;
}
if(c == 0 && readFailed==true)
{
usleep(50);
}
else if(c == '*')
{
readFailed=false;
i=10;
}
}
if(readFailed) {
cout << "Failed finishing programming: " << c << endl;
}
if (SP_OK != sp_flush(port, SP_BUF_BOTH))
{
cout << "Warning: Could not flush buffers!" << endl;
}
pauseRead = false;
}
string Data::readData()
{
sp_return res = SP_OK;
char buffer[512];
string output;
if (port && !pauseRead)
{
if ((res = sp_blocking_read(port, buffer, 512, TIMEOUT)) < SP_OK)
{
cout << "Unable to read data from port: " << res << endl;
}
if ( res > 0 )
{
output.append(buffer, res);
}
}
return output;
}
int Data::openPort(std::string device)
{
sp_return res = SP_OK;
if (!port)
{
res = sp_get_port_by_name(device.c_str(), &port);
if (SP_OK != res)
{
cout << "Failed to find port " << device << endl;
return res;
}
res = sp_open(port, (sp_mode)(SP_MODE_READ | SP_MODE_WRITE));
if (SP_OK != res)
{
cout << "Failed to open port " << device << endl;
return res;
}
res = sp_new_config(&config);
if (SP_OK != res)
{
throw std::runtime_error("Unable to allocate serial port config");
}
res = sp_get_config(port, config);
if (SP_OK != res)
{
cout << "Failed to get port config" << endl;
return res;
}
res = sp_set_config_baudrate(config, 2400);
if (SP_OK != res)
{
throw std::runtime_error("Unable to set config baud rate");
}
res = sp_set_config_bits(config, 8);
if (SP_OK != res)
{
throw std::runtime_error("Unable to set config bits");
}
res = sp_set_config_parity(config, SP_PARITY_NONE);
if (SP_OK != res)
{
throw std::runtime_error("Unable to set config parity");
}
res = sp_set_config_stopbits(config, 1);
if (SP_OK != res)
{
throw std::runtime_error("Unable to set config stop bits");
}
res = sp_set_config_flowcontrol(config, SP_FLOWCONTROL_NONE);
if (SP_OK != res)
{
throw std::runtime_error("Unable to set config flow control");
}
res = sp_set_config(port, config);
if (SP_OK != res)
{
cout << "Failed to set port config" << endl;
return res;
}
sp_free_config(config);
config = NULL;
pauseRead = false;
}
return res;
}
int Data::closePort()
{
sp_return res = SP_OK;
if (port)
{
pauseRead = true;
res = sp_flush(port, SP_BUF_BOTH);
if (SP_OK != res)
{
cout << "Warning: Could not flush port" << endl;
}
res = sp_close(port);
if (SP_OK != res)
{
cout << "Warning: Could not close port" << endl;
}
sp_free_port(port);
port = NULL;
}
return res;
}