Specified possible keypad backlight control

README.md

@@ -83,15 +83,15 @@ Just like with SPARTA, it's entirely up to the implementation to choose the rand
 
 The `05` port is divided as follows:
 
-Bits   |7              |6-4          |3-0
+Bits   |7              |6-4          |3               |2-0
--------|---------------|-------------|---------------------------
+-------|---------------|-------------|----------------|--------------------
-Meaning|Charger plugged|Battery level|Screen backlight brightness
+Meaning|Charger plugged|Battery level|Keypad BL switch|Screen BL brightness
 
 The higher nibble (bits 4 to 7) is used to indicate the status of charging and battery level. This nibble is read-only and must be ignored on modification.
 
-The lower nibble (bits 0 to 3) of the status can be modified from the application, and the runtime should attempt to change the backlight brightness level, where 15 is the highest and 0 means backlight off.
+The lower nibble (bits 0 to 3) of the status can be modified from the application, and the runtime should attempt to change the screen backlight brightness level, where 7 is the highest and 0 means backlight off, and toggle the keypad backlight switch as well if supported.
 
-Note: emulated environments are allowed to always return `ff` when this port is read from, which means emulating a fully charged phone with external power supply connected on the maximum brightness.
+Note: emulated environments are allowed to always return `ff` when this port is read from, which means emulating a fully charged phone with external power supply connected on the maximum screen brightness and backlit keypad.
 
 ## Sound output
 

web/esop-ext.js

@@ -29,7 +29,7 @@ function ESOPExtensions() {
     })
     //setup status port
     vm.setReadHook(0x05, function() {
-      vm.setdev(0x05, 0xff) //emulate full brightness, full charge and charger plugged in 
+      vm.setdev(0x05, 0xff) //emulate full brightness, backlit keypad, full charge and charger plugged in 
     })
   }