Welder.h

Go to the documentation of this file.

#ifndef Welder_h
#define Welder_h
 
#include "core/AnimatedEvent.h"
#include "core/CommandEvent.h"
 
class Welder :
    public CommandEvent, AnimatedEvent
{
public:
    Welder(byte idPin, byte relayPin) :
        fID(idPin),
        fRelayPin(relayPin)
    {
        pinMode(fID, INPUT_PULLUP);
        pinMode(fRelayPin, OUTPUT);
        welderDisarm();
    }
 
    bool isAttached()
    {
        return !digitalRead(fID);
    }
 
    void welderArm()
    {
        fArmed = true;
    }
 
    void welderDisarm()
    {
        fArmed = false;
        welderOff();
    }
 
    void welderOn()
    {
        if (fArmed && fCount == 0)
        {
            fCount = random(80, 120);
            fCount += !(fCount&1); // ensure count is odd
            fNextTime = millis();
        }
    }
 
    void welderOff()
    {
        fCount = 0;
        fNextTime = 0;
        digitalWrite(fRelayPin, LOW);
    }
 
    virtual void handleCommand(const char* cmd) override
    {
        if (*cmd++ == 'W' && *cmd++ == 'L')
        {
            // Cannot arm/disarm welder using commands. Welder should be automatically
            // armed after opening door and raising arm. As soon as arm starts lowering
            // the welder should be disarmed.
            if (cmd[0] == 'O' && cmd[1] == 'N' && cmd[2] == '\0')
            {
                welderOn();
            }
            else if (cmd[0] == 'O' && cmd[1] == 'F' && cmd[2] == 'F' && cmd[3] == '\0')
            {
                welderOff();
            }
        }
    }
 
    virtual void animate() override
    {
        if (!fArmed || fCount == 0)
            return;
        uint32_t currentTime = millis();
        if (fNextTime < currentTime)
        {
            bool relayOn = (fCount-- & 1);
            if (relayOn)
            {
                digitalWrite(fRelayPin, LOW);
                fNextTime = currentTime + random(200);
            }
            else
            {
                digitalWrite(fRelayPin, HIGH);
                fNextTime = currentTime + random(20,120);
            }
        }
    }
 
private:
    byte fID;
    byte fRelayPin;
    bool fArmed;
    uint8_t fCount;
    uint32_t fNextTime;
};
 
 
#endif