I have a cable TV remote and cant find any information on it online about the IR protocol used. I want to make my own remote soon and would love to learn this protocol.
Looks like :
first 5 bits are the same (DEVICE?)
next 4 are possibly commands? in LSb form
Next 7 are?
next 4 are inverse of command perhaps...
last 2 are?
First 5 bits must be like some sync i guess
Next 4 bits must be the command
Next 7 bits must be a some sync or something
Next 4 bits must be the inverse of command
Next 2 bits are Device... 01 = TV, 00 = DVR
(im using a Time Warner Cable Box Remote (UR5U-8780L-TWY))
As you can see the command is like SIRC kind of... Button 1 is 0x00, Button 2 is 0x1, Button 3 is 0x2 etc... so there is something similar going on here.... Im tired and will scan more numbers and try to make more sense of this after a break
That would be... 16 Commands per device...with 4 device max... which would mean 64 buttons max for Actual Cable box usage... This is all theory but seems to be making more sense heh
START = 3.3ms LOW then 3.3ms HIGH
A LOGIC 1 = 900us LOW then 2.4ms HIGH
A LOGIC 0 = 900us LOW then 700us HIGH
Ill try to make a decoder with a PIC micro and some fancy UART code to see if i can read it easier