Clarify Shelly DALI Dimmer features

docs/DALI.md

@@ -25,9 +25,30 @@ Tasmota DALI gateway is an application controller. It defaults to supporting Dev
 
 ## Hardware
 
-The driver is supported on both ESP8266 and ESP32. It has been tested using [DALI Click](https://www.mikroe.com/dali-click) with GPIO settings `DALI TX` and `DALI RX` and a Busch-Jaeger Rotary dimmer acting as a DALI bus power supply.
+The driver is supported on both ESP8266 and ESP32. It has been tested using [DALI Click](https://www.mikroe.com/dali-click) with GPIO settings `DALI TX` and `DALI RX` and a [Busch-Jaeger Rotary dimmer](https://www.busch-jaeger.de/en/online-catalogue/detail/2CKA006599A2986) acting as a DALI bus power supply.
 
-The ESP32-C3 based [Shelly DALI Dimmer Gen3](https://www.shelly.com/products/shelly-dali-dimmer-gen3) is supported using template `{"NAME":"Shelly DALI Dimmer Gen3","GPIO":[34,4736,0,3840,11360,11392,128,129,0,1,576,0,0,0,0,0,0,0,0,1,1,1],"FLAG":0,"BASE":1}` and additional commands `Backlog AdcGpio1 10000,10000,4000; ButtonTopic 0; SetOption1 1; SetOption11 0; SetOption32 20; DimmerStep 5; LedTable 0`.<br>The following rule `rule1 on button1#state=2 do dimmer + endon on button2#state=2 do dimmer - endon on button1#state=3 do power 2 endon on button2#state=3 do power 2 endon` allows dimmer control using two buttons.<br>Notice that the Shelly DALI dimmer uses inverted DALI GPIO's `DALI TX_i` and `DALI_RX_i` and provides a limited DALI bus power supply of 10mA, enough for 5 DALI control gear.
+### Shelly DALI Dimmer Gen3
+
+The ESP32-C3 based [Shelly DALI Dimmer Gen3](https://www.shelly.com/products/shelly-dali-dimmer-gen3) is supported using template 
+```
+{"NAME":"Shelly DALI Dimmer Gen3","GPIO":[34,4736,0,3840,11360,11392,128,129,0,1,576,0,0,0,0,0,0,0,0,1,1,1],"FLAG":0,"BASE":1}
+```
+and additional commands 
+```
+Backlog AdcGpio1 10000,10000,4000; ButtonTopic 0; SetOption1 1; SetOption11 0; SetOption32 20; DimmerStep 5; LedTable 0
+```
+The following rule
+```
+rule1 on button1#state=2 do dimmer + endon on button2#state=2 do dimmer - endon on button1#state=3 do power 2 endon on button2#state=3 do power 2 endon
+```
+allows dimmer control using two buttons.
+
+Notice that the Shelly DALI dimmer uses inverted DALI GPIO's `DALI TX_i` and `DALI_RX_i` and provides a limited DALI bus power supply of 10mA, enough for 5 DALI control gear.
+
+To add Shelly DALI Dimmer to a bus powered environment it's best to disable the internal Shelly power supply. In that case use template (changed GPIO3)
+```
+{"NAME":"Shelly DALI Dimmer Gen3 (No power)","GPIO":[34,4736,0,3872,11360,11392,128,129,0,1,576,0,0,0,0,0,0,0,0,1,1,1],"FLAG":0,"BASE":1}
+``` 
 
 ## Commands