Add "platform xiaomi_bslamp2" to config guide.

doc/configuration.md

@@ -1,25 +1,63 @@
+[Index](../README.md) | [Flashing guide](flashing.md) >
+
 # Configuration guide
 
 The `xiaomi_bslamp2` platform provides various components that expose the core functionalities of the lamp.
 In the following table, you can find what components are used for exposing what parts of the lamp.
 
-  | Part                       | Component(s)                                       |
-  | -------------------------- |----------------------------------------------------|
-  | RGBWW LEDs                 |  [light](#light)                                   |
-  | Front Panel Power button   |  [binary_sensor](#binary_sensor)                   |
-  | Front Panel Color button   |  [binary_sensor](#binary_sensor)                   |
-  | Front Panel Slider         |  [binary_sensor](#binary_sensor) (touch/release)   |
-  |                            |  [sensor](#sensor) (touched slider level)          |
-  | Front Panel Illumination   |  [output](#output) (on/off + indicator level)      |
-  | Light mode propagation     |  [text_sensor](#text_sensor)                       |
+  | Part                       | Component(s)                                           |
+  | -------------------------- |--------------------------------------------------------|
+  | ESP32 pinouts              |  [platform 'xiaomi_bslamp2'](#platform-xiaomi-bslamp2) |
+  | RGBWW LEDs                 |  [light](#light)                                       |
+  | Front Panel Power button   |  [binary_sensor](#binary_sensor)                       |
+  | Front Panel Color button   |  [binary_sensor](#binary_sensor)                       |
+  | Front Panel Slider         |  [binary_sensor](#binary_sensor) (touch/release)       |
+  |                            |  [sensor](#sensor) (touched slider level)              |
+  | Front Panel Illumination   |  [output](#output) (on/off + indicator level)          |
+  | Light mode propagation     |  [text_sensor](#text_sensor)                           |
+
+## Platform: xiaomi_bslamp2
+
+At the core of the hardware support is the `xiaomi_bslamp2` platform, which provides two
+hub-style hardware abstraction layer (HAL) components that are used by the other components:
+one for driving the GPIO's for the RGBWW leds and one for the I2C communication between
+the ESP32 and the front panel.
+
+I do mention it here for completeness sake, but generally you will not have to add the
+following configuration option to your yaml file. It is loaded automatically by the
+components that need it, and the GPIO + I2C configurations are fully prepared to work
+for the Bedside Lamp 2 wiring out of the box.
+Therefore, you will not find this piece of configuration in the [example.yaml](doc/example.yaml).
+
+Having said that, here are the configuration options:
+
+```yaml
+xiaomi_bslamp2:
+  # Options for the RGBWW LEDs HAL.
+  red: "GPIO13"
+  green: "GPIO14"
+  blue: "GPIO5"
+  white: "GPIO12"
+  master_1: "GPIO33"
+  master_2: "GPIO4"
   
+  # Options for the Front Panel HAL.
+  sda: "GPIO21"
+  scl: "GPIO19"
+  address: 0x2C
+  trigger_pin: "GPIO16"
+```
+
+The only reason that I can think of for adding this platform configuration to your yaml
+file, would be if you blew one or more or the ESP32 pins, and need to rewire functions
+to different pins.
 
-## light
+## Component: light
 
-## binary_sensor
+## Component: binary_sensor
 
-## sensor
+## Component: sensor
 
-## output
+## Component: output
 
-## text_output
+## Component: text_output