using system.getSwitchInfo() you run into the +/-1 problem. In summary ... addInputbox returns the +1 direction as whatever direction the pilot flipped the switch . .which could be up or down or middle .. and there is no way to know what that direction was. So while you can call getSwitchInfo, you won't know the active direction.
Here is the solution:
local function switchChanged(switchName, value)
local Invert = 1.0
local swInfo = system.getSwitchInfo(value)
local swTyp = string.sub(swInfo.label,1,1)
if swInfo.assigned then
if string.sub(swInfo.mode,-1,-1) == "I" then Invert = -1.0 end
if swInfo.value == Invert or swTyp == "L" or swTyp =="M" then
vars.switches[switchName] = value
system.pSave(switchName, value)
form.setButton(1, "save",ENABLED)
vars.changedConfig = 1
vars.switchInfo[switchName] = {}
vars.switchInfo[switchName].name = swInfo.label
vars.switchInfo[switchName].mode = swInfo.mode
if swTyp == "L" or swTyp =="M" then
vars.switchInfo[switchName].activeOn = 0
else
vars.switchInfo[switchName].activeOn = system.getInputs(string.upper(swInfo.label))
end
else
system.messageBox(vars.trans.switchError, 3)
if vars.switches[switchName] then
form.setValue(switch[switchName],vars.switches[switchName])
else
form.setValue(switch[switchName],nil)
end
end
else
if vars.switchInfo[switchName] then
vars.switches[switchName] = nil
vars.switchInfo[switchName] = nil
form.setButton(1, "save",ENABLED)
system.pSave(switchName, nil)
vars.changedConfig = 1
end
end
collectgarbage()
end
It is not true that you always get +1 from the addinputbox, you get -1 if he moved the switch two times or he choosed inverted. If he choose "inverted" everything is okay, you got the information. If you get -1 and he didn't invert then he moved the stick twice, I don't allow that, because if you have a 3-position switch you don't know in which position the switch is now, with a 2-position switch you woulld be fine - of course it can only be on the other side.
With getswitchinfo you get if he has moved the stick or not, and you can be sure if not it is now on the position he has selected. Finally all you have to do is system.getinputs to get if it is -1, 0, or +1 Then you have everything you need and can restore the switch.
I hope it is unterstandible how it works.
Dieter
