view_monitor.cpp

#include "view_monitor.h"
 
ViewMonitor::ViewMonitor() : t_worker(&ViewMonitor::worker, this)
{
}
 
call_t ViewMonitor::keypress(int& key)
{
    switch(key)
    {
 
    case KEY_MOUSE:
    {
        // http://pronix.linuxdelta.de/C/Linuxprogrammierung/Linuxsystemprogrammieren_C_Kurs_Kapitel10b.shtml
        MEVENT event;
        bool hit = false;
        if(getmouse(&event) == OK && event.bstate & (BUTTON1_CLICKED | BUTTON1_DOUBLE_CLICKED))
        {
            size_t column = start_x + close_offset_x;
            size_t row = start_y + close_offset_y;
            size_t mouse_x = event.x, mouse_y = event.y;
            if(mouse_y == row && mouse_x >= column && mouse_x < column + label_close.length())
                hit = true;
        }
        if(!hit)
            break;
 
        // fall through to next case
        [[fallthrough]];
    }
    case KEY_ENT:
        run_worker = false;
        key = -1; // do return from view
        wclear(win);
        wrefresh(win);
        t_worker.join();
        break;
    default:
        break;
    }
    return calls[0];
}
 
std::string ViewMonitor::fancyDigitalString(uint8_t& b)
{
    std::string bitstring(std::bitset<8>(b).to_string());
    std::reverse(bitstring.begin(), bitstring.end());
 
    std::stringstream str;
    str << bitstring;
    str << " ";
    str << "0x" << std::setfill ('0') << std::setw(2) << std::hex << (int) b << std::dec;
    return str.str();
}
 
std::string ViewMonitor::fancyAnalogString(uint16_t& v)
{
    std::stringstream str;
    double volt = round(v * 100.0 * 5.0 / 1023.0) / 100.0;
 
    str << std::setfill ('0') << std::setw(4) << (int) v << "   " << std::fixed << std::setprecision(2) << volt << " V   ";
 
    str << "[";
    uint8_t p = round(v * 40.0 / 1023.0);
    for(uint8_t i = 0; i < p; i++)
        str << "X";
    for(uint8_t i = 0; i < 40 - p; i++)
        str << " ";
    str << "]" << std::endl;
 
    return str.str();
}
 
void ViewMonitor::worker()
{
    B15F& drv = B15F::getInstance();
    while(run_worker)
    {
        try
        {
            
#ifdef __arm__
            // Raspberry Pi is much slower
            std::this_thread::sleep_for(std::chrono::milliseconds(1000));
#else
            // normal PC is faster
            std::this_thread::sleep_for(std::chrono::milliseconds(100));
#endif
 
            uint8_t be0 = drv.digitalRead0();
            uint8_t be1 = drv.digitalRead1();
            uint8_t dsw = drv.readDipSwitch();
            uint16_t adc[8];
            for(uint8_t i = 0; i < sizeof(adc) / sizeof(adc[0]); i++)
                adc[i] = drv.analogRead(i);
 
 
            std::stringstream str;
 
            // hline
            for(uint8_t i = 0; i < width - 2 * text_offset_x; i++)
                if(i % 2 == 0)
                    str << "-";
                else
                    str << " ";
            str << std::endl;
 
            str << "Digitale Enigaenge:" << std::endl;
            str << "Binaere Eingabe 0: " << fancyDigitalString(be0) << std::endl;
            str << "Binaere Eingabe 1: " << fancyDigitalString(be1) << std::endl;
            str << "Dip Schalter (S7): " << fancyDigitalString(dsw) << std::endl;
 
            // hline
            for(uint8_t i = 0; i < width - 2 * text_offset_x; i++)
                if(i % 2 == 0)
                    str << "-";
                else
                    str << " ";
            str << std::endl;
 
            str << "Analoge Eingaenge:" << std::endl;
            for(uint8_t i = 0; i < sizeof(adc) / sizeof(adc[0]); i++)
            {
                str << "Kanal " << std::to_string((int) i) << ": ";
                str << fancyAnalogString(adc[i]) << std::endl;
            }
 
            text = str.str();
            repaint();
        }
        catch(DriverException& ex)
        {
            std::cout << "DriverException: " << ex.what() << std::endl;
            drv.delay_ms(1000);
        }
        catch(...)
        {
            try
            {
                drv.reconnect();
            }
            catch(...)
            {
                B15F::abort("Die Verbindung ist unterbrochen worden. Wurde ein Stecker gezogen? :D");
                return;
            }
        }
    }
}