// Service: called once per second
void HVAC::service()
{
tempCheck();
static uint16_t old[4];
if(m_remoteTimer) // let user change values for some time before sending
{
if(--m_remoteTimer == 0)
{
if(old[0] != ee.coolTemp[0]) sendCmd("cooltempl", old[0] = ee.coolTemp[0]);
if(old[1] != ee.coolTemp[1]) sendCmd("cooltemph", old[1] = ee.coolTemp[1]);
if(old[2] != ee.heatTemp[0]) sendCmd("heattempl", old[2] = ee.heatTemp[0]);
if(old[3] != ee.heatTemp[1]) sendCmd("heattemph", old[3] = ee.heatTemp[1]);
if(ee.heatMode != m_setHeat) sendCmd("heatmode", ee.heatMode = m_setHeat);
if(ee.Mode != m_setMode) sendCmd("mode", ee.Mode = m_setMode);
}
}
}
// Service: called once per second
void HVAC::service()
{
if(m_bFanRunning || m_bRunning || m_furnaceFan) // furance runs fan seperately
{
filterInc();
if(m_fanOnTimer < 0xFFFF)
m_fanOnTimer++; // running time counter
if(m_furnaceFan) // fake fan status for furnace fan
m_furnaceFan--;
}
if(m_fanPostTimer) // Fan continuation delay
{
if(--m_fanPostTimer == 0)
if(!m_bRunning && m_bFanMode == false) // Ensure system isn't running and fanMode is auto
fanSwitch(false);
}
if(m_overrideTimer) // User temp override timer
{
if(--m_overrideTimer == 0)
{
m_ovrTemp = 0;
calcTargetTemp(m_EE.Mode); // recalc normal set temp
}
}
if(m_bRunning)
{
m_runTotal++;
if(++m_cycleTimer < 20) // Block changes for at least 20 seconds after a start
return;
if(m_cycleTimer >= m_EE.cycleMax) // running too long (todo: skip for eHeat?)
{
m_bStop = true;
m_notif = Note_CycleLimit; // cycle limit hit
}
}
else
{
m_idleTimer++; // Time since stopped
}
if(m_setMode != m_EE.Mode || m_setHeat != m_EE.heatMode) // requested HVAC mode change
{
if(m_bRunning) // cycleTimer is already > 20s here
m_bStop = true;
if(m_idleTimer >= 5)
{
m_EE.heatMode = m_setHeat;
m_EE.Mode = m_setMode; // User may be cycling through modes (give 5s)
calcTargetTemp(m_EE.Mode);
}
}
int8_t hm = (m_EE.heatMode == Heat_Auto) ? m_AutoHeat : m_EE.heatMode; // true heat mode
int8_t mode = (m_EE.Mode == Mode_Auto) ? m_AutoMode : m_EE.Mode; // tue heat/cool mode
if(m_bStart && !m_bRunning) // Start signal occurred
{
m_bStart = false;
switch(mode)
{
case Mode_Cool:
fanSwitch(true);
if(digitalRead(P_REV) != HIGH)
{
digitalWrite(P_REV, HIGH); // set heatpump to cool (if heats, reverse this)
delay(3000); // if no heatpump, remove
}
digitalWrite(P_COOL, HIGH);
break;
case Mode_Heat:
if(hm) // gas
{
digitalWrite(P_HEAT, HIGH);
}
else
{
fanSwitch(true);
if(digitalRead(P_REV) != LOW) // set heatpump to heat (if heats, reverse this)
{
digitalWrite(P_REV, LOW);
delay(3000);
}
digitalWrite(P_COOL, HIGH);
}
break;
}
m_bRunning = true;
if(m_EE.humidMode == HM_Run)
humidSwitch(true);
m_cycleTimer = 0;
}
if(m_bStop && m_bRunning) // Stop signal occurred
{
m_bStop = false;
digitalWrite(P_COOL, LOW);
digitalWrite(P_HEAT, LOW);
if(m_EE.humidMode == HM_Run) // shut off after heat/cool phase
humidSwitch(false);
if(m_bFanRunning && m_bFanMode == false) // Note: furnace manages fan
{
if(m_EE.fanPostDelay[digitalRead(P_REV)]) // leave fan running to circulate air longer
m_fanPostTimer = m_EE.fanPostDelay[digitalRead(P_REV)]; // P_REV == true if heating
else
fanSwitch(false);
}
if(mode == Mode_Heat && hm) // count run time as fan time in winter
{ // furnace post fan is 120 seconds
m_furnaceFan = FF_DELAY;
}
m_bRunning = false;
m_idleTimer = 0;
}
tempCheck();
}
