Main Program (main.cpp)

code/main.cpp

#include "sensor.h"
#include "switch.h"
#include "fsm.h"

#include <why-timer.h>
#include <why-irq.h>
#include <why-time.h>

#include <print>


int main()
{
    Why::init();

    Sensor sensor("/tmp/plant/temperature");
    Switch cooling_switch("/tmp/plant/cooling");
    Switch soft_alarm("/tmp/plant/soft-alarm");
    Switch hard_alarm("/tmp/plant/hard-alarm");

    const long LOW_TEMP = 20;
    const long HIGH_TEMP = 500'000;
    const long SOFT_ALARM_TEMP = 1'000'000;
    const int SENSOR_BURNING_IRQ = 7;
    const int OPERATOR_BUTTON_IRQ = 42;

    std::println("* Thermostat lo: {}", LOW_TEMP);
    std::println("* Thermostat hi: {}", HIGH_TEMP);
    std::println("* Soft critical: {}", SOFT_ALARM_TEMP);
    std::println("* Cooling switch: {}", cooling_switch.path());
    std::println("* Soft alarm: {}", soft_alarm.path());
    std::println("* Hard alarm: {}", hard_alarm.path());
    std::println("* Sensor burning IRQ: {}", SENSOR_BURNING_IRQ);
    std::println("* Operator button IRQ: {}", OPERATOR_BUTTON_IRQ);
    
    FSM fsm(
        Why::TimeSpec(0, 1'000'000),                   // <-- 1ms update interval
        SENSOR_BURNING_IRQ, hard_alarm,                // <-- "sensor-burning" irq, and associated alarm
        SOFT_ALARM_TEMP, soft_alarm,                   // <-- "a little too high", and associated alarm
        OPERATOR_BUTTON_IRQ,                           // <-- "operator button pressed" irq
        sensor, cooling_switch,                        // <-- thermostat operation
        LOW_TEMP, HIGH_TEMP                            // <-- thermostat operation
    );

    fsm.start();                                       // <-- activate interrupts, timer, ...

    Why::pause();                                      // <-- sit idle
    return 0;
}