IR Learner Protocol

Full documentation of the IR Learner protocol is available in this Google Doc:
https://docs.google.com/document/d/1BMRwD9RlUYtf4VeJNXgRwo6-lkkSAIVo8tczrynJ7CU/preview?pli=1

The CommandFusion IR Learner sends out an IR string after learning, in the following ascii format:

• Bytes 1-4: Frequency Divisor (eg. 0066)
• Bytes 5-X: IR Code in string format.

The Frequency divisor is used to calculate the IR frequency (kHz):

• Frequency = 4145.146 / Frequency Divisor

Given a frequency divisor string of 0066:

• Frequency = 4145.146 / \x66
• Frequency = 4145.146 / 102
• Frequency = 40.63 kHz

The IR Code string following the Frequency Divisor is in the following format:

• LPLPLPLP….. (repeating set of L and P)
• L = Logic 01 (ON) or 00 (OFF) (two digits)
• P = Period in µs (microseconds, two digits)
• For the exact period, multiply the P value with 25 to get the final µs value.
• eg. 016100160119 = ON for 2425µs, OFF for 550µs, ON for 625µs
• The length of this string defines the length of the IR code.