count down timer as a function

[IC_Systems]

hello 

I have multiple AC units, I want to add a timer for each one to turn off the AC with remain time and reset.

in order not to repeat the same script multiple times I think the function will be more optimized.

Is there any example of this using function?

regards,

[Erwin-vd-Zwart]

What do you want to achieve with it?

When running a function from an event you load the same code as when running separate scripts, as events do run in parallel

From performance point of view you won’t gain anything...

[IC_Systems]

hello @Erwin-vd-Zwart 

I liked the function Just to make the script shorter instead of repeating the same code multiple times. 

the idea is to let the user:

- set a timer to turn off the AC unit, we have around 20 units.

- Enable disable the timer

- reset the timer 

- remain time

the user still could turn off the AC from Vis or by leaving seen.

[Erwin-vd-Zwart · Accepted solution]

You could try this:

User library called user.timer:

function settimer(addr, ena, res, rem, time, event, scriptname)
if event.dst == res and grp.getvalue(res) == false then
return
end
tpid = storage.get('PID:' .. scriptname)
if tpid == nil then
pid = os.getpid()
storage.set('PID:' .. scriptname, pid)
else
pid = os.getpid()
storage.set('PID:' .. scriptname, pid)
os.kill(tpid, signal.SIGKILL)
end
if grp.getvalue(ena) == false then
storage.delete('PID:' .. scriptname)
grp.write(rem, 0)
grp.write(addr, false)
return
end
grp.write(addr, true)
for i = 0, time - 1, 1 do
grp.write(rem, time - i)
os.sleep(60)
end
grp.write(rem, 0)
grp.write(addr, false)
storage.delete('PID:' .. scriptname)
end

Event based script triggered by tag on the enable and reset object

require('user.timer')

output = '6/0/0' ' -- bit object NO TAG !!
enable = '6/0/1' -- bit object with TAG to trigger this script
reset = '6/0/2' -- bit object with TAG to trigger this script
remaining = '6/0/3' -- byte object
delay = 10 -- in minutes

settimer(output, enable, reset, remaining, delay, event, _SCRIPTNAME)

[IC_Systems]

hello @Erwin-vd-Zwart 

I got this error:

User script:1: module 'user.timer' not found:
 no field package.preload['user.timer']
 no file './user/timer'
 no file 'Library user/timer'
 no file 'User library timer'
 no file 'Library user/timer.so'
 no file 'Library user.so'
stack traceback:
 [C]: in function 'require'
 User script:1: in main chunk

[Erwin-vd-Zwart]

Did you create the userlib 'timer' with the corresponding function?

[IC_Systems]

Sorry for that,

No, I add it to an old user lib.

many thanks

regards,

[Erwin-vd-Zwart]

You can add the function settimer() to another user lib, or even common functions but in that case you need to adjust require('user.timer') to the other user lib name or when adding settimer to common functions you can remove the require() completely

[IC_Systems]

hello @Erwin-vd-Zwart 

thank you for the great support.

is this the correct (optimal) way to convert the remaining time to hh:mm format?

for i = 0, time - 1, 1 do
local remain = time - i

grp.update(rem, string.format("%02.f", math.floor(math.abs(remain)/60) )..':'..string.format("%02.f", math.fmod(math.abs(remain), 60) ) )

regards,

[Erwin-vd-Zwart]

Short version: grp.update(rem, os.date('!%H:%M', remain * 60))

[IC_Systems]

great @Erwin-vd-Zwart 

very short 🙂