Infra Red Remote control project

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madicalphy

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Can any one help me in making an infra red remote control project using At89s51 microcontroller and sony remot. Please give me the detail decoding of sony remot protocol.
a example program written in Keil c51 will be highly appriciated.
regards
 

well most of the remotes used today follow RC5 coding, a type of manchester code.Connect an IR receiver TSOP 1738 with its associated circuitry mentioned in its datasheet to one of the external interrupts of 89C51RD2. i don't know of any C program but assembly language decoding program is available on the internet.
 

Using an external interrupt plus 1timer, you can decode it by start and stop and read timer data inside an external interrupt routine.
 

have you some source code for this ?:
 

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