Crestron CNX-BF12 Dokumentacja Pobierz pdf (Strona 80)

EssentialsofCrestronProgramming

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80

ThebuttonfeedbackfortheUpandDownbuttonsissimplymomentaryfeedback.The

buttonwilldisplayintheactivestateforaslongasthebuttonisbeingpressed.When

thebuttonisreleased,thebuttonfeedbackwillreverttotheinactivestate.Theonly

programmingthisfeedbacktyperequiresistotiethesa

mesignalnametoboththeinput

andoutputofthetouchpanelsymbol.

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VolumeMuteFeedback

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InthefollowingexamplethefeedbackfortheMutebuttonishandledbyaToggle

symbol.Aswell,theVolume_Muteoutputisconnectedtothe<clock>inputofthe

Toggle,thustogglingthebuttonfeedbackwitheachpressoftheMutebutton.In

addition,theVolumeUpandDownsignalsareputthroughanORsym

bol.Ifeitherof

thesesignalsgoeshigh,thiswillactivatetheoutputoftheORsymbol,thusdrivingthe

Togglesymbol’s<reset>inputhighandturningoffthemutebuttonfeedback.

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VolumePreset

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InadditiontotheVolumeUpandDownbuttons,theVTPro‐eprojectprovidesthree

VolumePresetButtonsthatsetthevolumeto25%,50%and75%.TheSIMPLprogram

accomplishesthisusinganAnalogInitializesymbol,whichsetsananalogsignaltoa

specificvalue.

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However,asdiscussedearliertheAnalogIntital

izewillimmediately“step”theoutput

tothetargetvalue,andtheeffectcanbethatthevolumewillcuttooabruptly.Instead,a

smoothtransitionfromthecurrentvolumeleveltothepresetlevelisneeded.Inthiscase

theoutputoftheAnalogInitializeisroutedtoanAnalogRateLimiter,whichsmooths

outthetransitionasrequired.

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Crestron CNX-BF12 Dokumentacja Strona 80