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// program: co2UART - modyfied dec 2017 by eSJeKo - no support :-)
// compile with: g++ co2UART.cpp -o co2UART -lwiringPi
// run with: sudo ./co2UART or (better) as <root> ./co2UART
// Be sure to disable serial login by running <raspi-config> but don't disable the serial port
#include <iostream>
#include <wiringPi.h> //only needed for the one sec delay
#include <wiringSerial.h> //only needed for serialOpen
#include <unistd.h> // needed for read and write
#include <ctime>
#include <fstream> // std::fstream
#include <string>
#include <stdio.h> /* printf */
using namespace std;
int main()
{
//600000=10 min // 10 Minutes seems a nice interval
int wait;
wait = 1000; // setting to wait for netx measurement (use 1000 for testing)
system("clear");
time_t now = time(0);
char* dt = ctime(&now);
time_t t = time(NULL);
tm* timePtr = localtime(&t);
printf ("co2UART version 2.00 ");
// Creating logfilename
string logfile;int s_len;
// Year/Month/Day/Hour/Minute
int year;year = timePtr->tm_year;year = year + 1900;std::string s_year = to_string(year);
s_len=0;int month;month = timePtr->tm_mon;month = month +1;std::string s_month = to_string(month);s_len=s_month.length();if( s_len < 2 ) {s_month="0"+s_month;}
s_len=0;int day;day = timePtr->tm_mday;std::string s_day = to_string(day);s_len=s_day.length();if( s_len < 2 ) {s_day="0"+s_day;}
s_len=0;int hour;hour = timePtr->tm_hour;hour = hour ;std::string s_hour = to_string(hour);s_len=s_hour.length();if( s_len < 2 ) {s_hour="0"+s_hour;}
s_len=0;int min;min = timePtr->tm_min;std::string s_min = to_string(min);s_len=s_min.length();if( s_len < 2 ) {s_min="0"+s_min;}
// cout << "\n\n\n\n\n";
// cout << s_len;
// cout << "\n\n\n\n\n";
// logfilename <CO2log_YYYYMMDD_HH.MM.log> //Change the format if you please
string logdir="/special/co2log/";
logfile=logdir+"CO2log_" + s_year + s_month + s_day + "_" + s_hour + "." + s_min + ".log" ;
cout << "Logfile: ";
cout << logfile;
cout << "\n";
// Open logfile for header output
std::fstream fs;
fs.open (logfile, std::fstream::out);;
fs << "- CO2-datlogging starting at: ";
fs << s_day;fs << "-";fs << s_month;fs << "-";fs << s_year;fs << " / ";fs << s_hour;fs << ":";fs << s_min;fs << "\n\n";
fs.close();
// Get data from serial port
int fd; // Handler ID
if ((fd = serialOpen ("/dev/serial0", 9600)) < 0) // uses wiringSerial
{
cout<< "Unable to open device";
return 1 ;
} else
{
cout <<"ttyAMA0 initialised [ok]";
}
char cmd[9] = {0xFF,0x01,0x86,0x00,0x00,0x00,0x00,0x00,0x79};
char cmd2[9];
cout << " >CO2uart is running\n\n";
while(1)
{
write (fd,cmd,9); //write 9 bytes in cmd to UART
read(fd,cmd2,9); //read 9 bytes to cmd2 from UART
cout << "-[";
cout << timePtr->tm_mday;
cout << "-";
cout << timePtr->tm_mon + 1;
cout << "-";
cout << timePtr->tm_year + 1900;
cout << " / ";
fs << timePtr->tm_hour + 1;
cout << ":";
cout << timePtr->tm_min;
cout << "]-----------------------------------------------------------------\n";
cout << "DEC: ";
for (int loop=0;loop<=8;loop++)
cout << (int)cmd2[loop] << "\t "; // print all 9 bytes with decimal output
cout << "\nHEX: ";
for (int loop=0;loop<=8;loop++)
cout << std::hex << (int)cmd2[loop] << std::dec << "\t "; //hex valures for all 9 bytes read
cout << "\n";
int High = (int) cmd2[2];
int Low = (int) cmd2[3];
int ppm = (256*High)+Low; //ppm = (256*byte2)+byte3 remember bytes numbered 0-8
cout << "high " << High << "\t low " << Low << "\tppm = " << ppm << "\n\n";
// Append data to logfile
fs.open (logfile, std::fstream::in | std::fstream::out | std::fstream::app);
time_t t = time(NULL);
tm* timePtr = localtime(&t);
fs << timePtr->tm_mday;
fs << "-";
fs << timePtr->tm_mon + 1;
fs << "-";
fs << timePtr->tm_year + 1900;
fs << " / ";
s_len=0;int hour;hour = timePtr->tm_hour;hour = hour ;std::string s_hour = to_string(hour);s_len=s_hour.length();if( s_len < 2 ) {s_hour="0"+s_hour;}
fs << s_hour;
fs << ":";
s_len=0;int min;min = timePtr->tm_min;std::string s_min = to_string(min);s_len=s_min.length();if( s_len < 2 ) {s_min="0"+s_min;}
fs << s_min;
fs << ",";
fs << ppm;
fs << "\n";
fs.close();
delay(wait);
}
return 0;
}
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