Update frequency detection script

Script-Cookbook.md

@@ -6,7 +6,7 @@
 - [LED Bar Display with WS2812 LED Chain](#LED-Bar-Display-with-WS2812-LED-Chain)
 - [Multiple IR Receiver Synchronization](#Multiple-IR-Receiver-Synchronization)
 - [Fast Polling](#Fast-Polling)
-- [Switching By Recognizing Mains Power Frequency](#Switching-By-Recognizing-Mains-Power-Frequency)
+- [Switching and Dimming By Recognizing Mains Power Frequency](#Switching-and-Dimming-By-Recognizing-Mains-Power-Frequency)
 
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@@ -808,77 +808,161 @@ endif
 
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-#### Switching By Recognizing Mains Power Frequency
+#### Switching and Dimming By Recognizing Mains Power Frequency
+Switching in Tasmota is usually done by High/Low (+3.3V/GND) changes on a GPIO. Here, however, this is achieved by a pulse frequency when connected to the GPIO, and these pulses are captured by `Counter1` in Tasmota.
+![pushbutton-input](https://user-images.githubusercontent.com/36734573/61955930-5d90e480-afbc-11e9-8d7e-00ac526874d3.png)
+
+- When the **light is OFF** and there is a **short period** of pulses **->** then turn the light **ON** at the previous dimmer level.
+- When the **light is ON** and there is a **short period** of pulses **->** then turn the light **OFF**.
+- When there is a longer period of pulses (i.e., **HOLD**) **->** toggle dimming direction and then adjust the brightness level as long as the button is pressed or until the limits are reached.
+
 [#6085 (comment)](../issues/6085#issuecomment-512353010)
 
+In the Data Section >D at the beginning of the Script the following initialization variables may be changed:
+- dim multiplier - 0..2.55 set the dimming increment value
+- dim lower limit - range for the dimmer value for push-button operation (set according to your bulb); min 0
+- dim upper limit - range for the dimmer value for push-button operation (set according to your bulb); max 100
+- start dim level - initial dimmer level after power-up or restart; max 100
+
 >**>D**  
-sw1=0  
+sw=0  
-sw2=0  
+tmp=0  
-cnt1=0  
+cnt=0  
-cnt2=0  
+tmr=0  
-timer1=0  
+hold=0  
-timer2=0  
+powert=0  
-toggle1=0  
+slider=0  
-toggle2=0
+dim=""  
+shortprl=2 ;short press lo limit  
+shortpru=10;short press up limit  
+dimdir=0   ;dim direction 0/1  
+dimstp=2   ;dim step/speed 1 to 5  
+dimmlp=2.2 ;dim multiplier  
+dimll=15   ;dim lower limit  
+dimul=95   ;dim upper limit  
+dimval=70  ;start dim level  
   
 >**>B**  
-=>print "WiFi 2-Gang Switch Script"
+=>print "WiFi-Dimmer-Script-v0.2"  
+=>Counter1 0  
+=>Baudrate 9600  
+; boot sequence  
+=#senddim(dimval)  
+delay(1000)  
+=#senddim(0)  
   
 >**>F**  
-; Counter1/2 and Relay1/2 configured in template  
+cnt=pc[1]  
-cnt1=pc[1]  
+if chg[cnt]>0  
-cnt2=pc[2]
+; sw pressed  
->
+then sw=1  
->if chg[cnt1]>0  
+else sw=0  
-then  
+; sw not pressed  
-; counter1 has changed, switch is on  
-sw1=1  
-else  
-; no change switch is off  
-sw1=0  
-endif
->
->if chg[cnt2]>0  
-then  
-; counter2 has changed, switch is on  
-sw2=1  
-else  
-; no change switch is off  
-sw2=0  
 endif  
 >
 >; 100ms timer  
-timer1+=1  
+tmr+=1  
-timer2+=1
 >
->if sw1==0  
+>
-and timer1>2  
+>; short press  
-and timer1<30  
+if sw==0  
+and tmr>shortprl  
+and tmr<shortpru  
 then  
-;=>print short press1  
+powert^=1  
-toggle1^=1  
+>
-=>Power1 %toggle1%  
+>; change light on/off  
+if powert==1  
+then  
+=#senddim(dimval)  
+else  
+=#senddim(0)  
+endif  
 endif  
 >
->if sw1==0  
+>
+>; long press  
+if sw>0  
 then  
-timer1=0  
+if hold==0  
+then  
+>
+>; change dim direction  
+dimdir^=1  
+endif  
+if tmr>shortpru  
+then  
+hold=1  
+if powert>0  
+>
+>; dim when on & hold  
+then  
+if dimdir>0  
+then  
+>
+>; increase dim level  
+dimval+=dimstp  
+if dimval>dimul  
+then  
+>
+>; upper limit  
+dimval=dimul  
+endif  
+=#senddim(dimval)  
+else  
+>
+>; decrease dim level  
+dimval-=dimstp  
+if dimval<dimll  
+then  
+>
+>; lower limit  
+dimval=dimll  
+endif  
+=#senddim(dimval)  
+endif  
+endif  
+endif  
+else  
+tmr=0  
+hold=0  
+endif  
+  
+>**>E**  
+slider=Dimmer  
+>
+>; slider change  
+if chg[slider]>0  
+then  
+>
+>; dim according slider  
+if slider>0  
+then  
+dimval=slider  
+=#senddim(dimval)  
+else  
+powert=0  
+=#senddim(0)  
+endif  
 endif  
 >
->if sw2==0  
+>if pwr[1]==1  
-and timer2>2  
+; on/off webui  
-and timer2<30  
 then  
-;=>print short press2  
+powert=1  
-toggle2^=1  
+=#senddim(dimval)  
-=>Power2 %toggle2%  
+else  
-endif
+powert=0  
->
+=#senddim(0)  
->if sw2==0  
-then  
-timer2=0  
 endif  
 
+>; subroutine dim  
+#senddim(tmp)  
+dim="FF55"+hn(tmp*dimmlp)+"05DC0A"  
+=>SerialSend5 %dim%  
+=>Dimmer %tmp%  
+\#  
+
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