heating.lua

-- extra temp offset for each mode
modeoffset = { [0] = 0, [1] = 2, [2] = 4 }

-- zone definition, each zone has 5 elements:
-- 1 = mode, 2 = temp sensor, 3 = setpoint, 4 = output, 5 = output status
zones = {
  { '7/4/3', '1/0/1', '1/1/1', '1/2/1', '1/3/1' },
  { '7/4/3', '1/0/2', '1/1/2', '1/2/2', '1/3/2' },
  { '7/4/3', '1/0/3', '1/1/3', '1/2/3', '1/3/3' },
  { '7/4/3', '1/0/4', '1/1/4', '1/2/4', '1/3/4' },
  { '7/4/3', '1/0/5', '1/1/5', '1/2/5', '1/3/5' },
  { '7/4/3', '1/0/6', '1/1/6', '1/2/6', '1/3/6' },
  { '7/4/3', '1/0/7', '1/1/7', '1/2/7', '1/3/7' },
  { '7/4/3', '1/0/8', '1/1/8', '1/2/8', '1/3/8' },
  { '7/4/3', '1/0/10', '1/1/10', '1/2/10', '1/3/10' },
  { '7/4/3', '1/0/11', '1/1/11', '1/2/11', '1/3/11' },
  { '7/4/3', '1/0/12', '1/1/12', '1/2/12', '1/3/12' },
  { '7/4/3', '1/0/13', '1/1/13', '1/2/13', '1/3/13' },
  { '7/4/3', '1/0/14', '1/1/14', '1/2/14', '1/3/14' },
  { '7/4/3', '1/0/15', '1/1/15', '1/2/15', '1/3/15' },
  { '7/4/3', '1/0/16', '1/1/16', '1/2/16', '1/3/16' },
  { '7/4/3', '1/0/17', '1/1/17', '1/2/17', '1/3/17' },
  { '7/4/3', '1/0/18', '1/1/18', '1/2/18', '1/3/18' },
  { '7/4/3', '1/0/19', '1/1/19', '1/2/19', '1/3/19' },
  { '7/4/3', '1/0/20', '1/1/20', '1/2/20', '1/3/20' },
  { '7/4/3', '1/0/21', '1/1/21', '1/2/21', '1/3/21' },
  { '7/4/3', '1/0/23', '1/1/23', '1/2/23', '1/3/23' }, 
}

for _, zone in ipairs(zones) do
  mode = grp.getvalue(zone[ 1 ])
  temp = grp.getvalue(zone[ 2 ])
  setpoint = grp.getvalue(zone[ 3 ])
  outaddr = zone[ 4 ]
  stataddr = zone[ 5 ]

  offset = modeoffset[ mode ] or 0
  tempmin = setpoint - offset - 0.5
  tempmax = setpoint - offset + 0.5

  value = nil

  if temp > tempmax then
    value = false
  elseif temp < tempmin then
    value = true
  end

  if value ~= nil and value ~= grp.getvalue(stataddr) then
    grp.write(outaddr, value)
  end
end