NETIO Lua Tips & Philosophy - Revision history

Phrych at 10:57, 17 October 2019

2019-10-17T10:57:34Z

Phrych at 09:13, 17 October 2019

2019-10-17T09:13:43Z

Phrych at 09:13, 17 October 2019

2019-10-17T09:13:26Z

Bbakala: Created page with "== Script starting == LUA Scripts in NETIO are event driven. That means if some event is triggered the script run exactly once. One of "triggers" is f..."

2019-07-11T16:48:54Z

Created page with "== Script starting == LUA Scripts in NETIO are event driven. That means if some event is triggered the script run exactly once. One of "triggers" is f..."

New page

== Script starting ==
LUA Scripts in NETIO are event driven. That means if some [[NETIO Lua Reference| event]] is triggered the script run exactly once. One of "triggers" is for example [[System started up|System started up]]. You can find list of all events called "triggers" in [[NETIO Lua Reference|NETIO Lua Reference]].

== Periodical scipts ==
In NETIO there is no way for triggering scripts periodically (e.g. every 10 seconds) usng standard triggers. For such scripts the trigger [[System started up|System started up]] and the function [[delay()|delay()]] must be used. This function calls itself and allows to run some procedures periodically.
*Example switching output 1 every 10 seconds:

DoPeriod = 10 -- repeat period in seconds
-------------------------------------------------
function doPeriodically()
-- your periodical code
-- your periodical code
-- your periodical code
-- your periodical code
-- your periodical code
-- your periodical code
delay(DoPeriod,function() doPeriodically() end)
end

doPeriodically()

*This script can be launch using e.g. [[System started up|System started up]] trigger.
*Only way how to disable these scripts is restart of NETIO, or usage of global variables.

== Debugging ==
To debug your code, use [[Function log()|log()]] and [[Function logf()|logf()]] functions. See the output in system events log.

← Older revision		Revision as of 09:13, 17 October 2019
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	== Global variables ==		== Global variables ==
−	For sharing variables between scripts, their initialization must be done without keyword '''local'''. Conventions in Lua specify that global variables should start with '''_G.''' (e.q. _G.globalVariable = true). After initialization global variable is available in all scripts. After restarting device, all global variables are deleted. It is recommended to use different names for local and global variables.	+	For sharing variables between scripts, their initialization must be done without keyword '''local'''. Conventions in Lua specify that global variables should start with '''_G.''' (e.q. '''_G.globalVariable = true'''). After initialization global variable is available in all scripts. After restarting device, all global variables are deleted. It is recommended to use different names for local and global variables.

← Older revision		Revision as of 09:13, 17 October 2019
Line 25:		Line 25:
	== Debugging ==		== Debugging ==
	To debug your code, use [[Function log()\|log()]] and [[Function logf()\|logf()]] functions. See the output in system events log.		To debug your code, use [[Function log()\|log()]] and [[Function logf()\|logf()]] functions. See the output in system events log.
		+
		+	== Global variables ==
		+	For sharing variables between scripts, their initialization must be done without keyword '''local'''. Conventions in Lua specify that global variables should start with '''_G.''' (e.q. _G.globalVariable = true). After initialization global variable is available in all scripts. After restarting device, all global variables are deleted. It is recommended to use different names for local and global variables.

@@ Line 6: / Line 6: @@
 *Example switching output 1 every 10 seconds:
-  DoPeriod = 10 -- repeat period in seconds
+  local doPeriod = 10 -- repeat period in seconds
   -------------------------------------------------
   function doPeriodically()
@@ Line 15: / Line 15: @@
        -- your periodical code
        -- your periodical code
-    delay(DoPeriod,function() doPeriodically() end)
+    delay(doPeriod,function() doPeriodically() end)
   end
@@ Line 28: / Line 28: @@
 == Global variables ==
 For sharing variables between scripts, their initialization must be done without keyword '''local'''. Conventions in Lua specify that global variables should start with '''_G.''' (e.q. '''_G.globalVariable = true'''). After initialization global variable is available in all scripts. After restarting device, all global variables are deleted. It is recommended to use different names for local and global variables.