alias gas_sensor d0
alias thermostat d1  # Logic Switch, variant 
alias temp_variance d2  # Logic Memory
alias curr_temp r0
alias target_temp r1
alias variance r2
alias min_temp r3
alias max_temp r4
alias cooling_active r5
alias heating_active r6

define wall_heaters 24258244  # Wall Heaters
define wall_coolers -739292323  # Wall Coolers (Gas)
define liquid_wall_coolers -1369060582  # Wall Coolers (Liquid)
define temp_convert 273

start:
# establish min- and max-temps to registry
l variance temp_variance Setting
l min_temp thermostat Setting
sub min_temp min_temp variance
l max_temp thermostat Setting
add max_temp max_temp variance

# initiate target temperature
l target_temp thermostat Setting

# read ambient temp from sensor and convert to C
l curr_temp gas_sensor Temperature
sub curr_temp curr_temp temp_convert

# compare current temp to max/min temp and
# initiate cooling or heating if needed
bgt curr_temp max_temp cooling
blt curr_temp min_temp heating

yield

# Go to start again
j start

cooling:
# read ambient temp from sensor and convert to C
l curr_temp gas_sensor Temperature
sub curr_temp curr_temp temp_convert
sgt cooling_active curr_temp target_temp

# send state to coolers
sb wall_coolers On cooling_active
sb liquid_wall_coolers On cooling_active
yield

# if curr_temp is lower than target, keep cooling
bgt curr_temp target_temp cooling

# ...if not, go to start again
j start

heating:
# read ambient temp from sensor and convert to C
l curr_temp gas_sensor Temperature
sub curr_temp curr_temp temp_convert
slt heating_active curr_temp target_temp

# send state to heaters
sb wall_heaters On heating_active
yield

# if curr_temp is lower than target, keep heating
blt curr_temp target_temp heating

# ...if not, go to start again
j start