Feb 13, 2010. | By: Dustin

Well I’ve had more time to play around with my Skype Phone today. Pretty much all of the reverse engineering is done. Screen drawing, keypad input, and LED are all documented.

KEY_TopLeft1 = 00 01 01 00 01 01 01 01 01
KEY_TopRight1 = 00 01 0D 00 01 01 01 01 01
KEY_TopLeft2 = 00 01 02 00 01 01 01 01 01
KEY_TopRight2 = 00 01 0E 00 01 01 01 01 01
KEY_CenterUp = 00 01 13 00 01 01 01 01 01
KEY_CenterDown = 00 01 16 00 01 01 01 01 01
KEY_1 = 00 01 03 00 01 01 01 01 01
KEY_2 = 00 01 09 00 01 01 01 01 01
KEY_3 = 00 01 0F 00 01 01 01 01 01
KEY_4 = 00 01 04 00 01 01 01 01 01
KEY_5 = 00 01 0A 00 01 01 01 01 01
KEY_6 = 00 01 10 00 01 01 01 01 01
KEY_7 = 00 01 05 00 01 01 01 01 01
KEY_8 = 00 01 0B 00 01 01 01 01 01
KEY_9 = 00 01 11 00 01 01 01 01 01
KEY_Astk = 00 01 06 00 01 01 01 01 01
KEY_0 = 00 01 0C 00 01 01 01 01 01
KEY_Pad = 00 01 12 00 01 01 01 01 01
KEY_F = 00 01 1A 00 01 01 01 01 01
KEY_Mute = 00 01 1B 00 01 01 01 01 01
KEY_RELEASE = 00 01 00 00 01 01 01 01 01

Byte 1 - First Nibble bit 4 = Backlight — Value 8 bit 2 = Red Light — Value 2

I started talking about the LCD in yesterday’s post, but seemed to have had a few mistakes in the documentation. These have been fixed in the first. I decided to draw up a little chart to help describe the block draw format of the Skype Phone even more.

Also I’ve managed to port a simple Chip8 emulator to the Skype Phone. Pretty much still an alpha version at the moment though. Due to it only draw to one fourth of the screen (64x32 the native resolution of the device.), but neither the less it’s a steps forward. Below are a picture of Blinky, PacMan clone, running. Sorry for the blurry photo. I’ll take a better one later