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HT12E and HT12D

coder decoder simulate RF 433 HT12E HT12D

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#1 XustyX

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Posted 12 May 2013 - 07:04 PM

Hi! Recently I buy a pair RF modules 433 and I want to use netduino for send data. For this I need emulate the HT12E or HT12D and I wonder if it is possible. The coder and decoder can be other models too.

Thanks and see you :)

 



#2 hanzibal

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Posted 16 May 2013 - 11:48 AM

Hi!

 

I suppose that would depend on the rate at which data must be processed and how lengthy transmissions are.

 

I think it's possible to emulate the decoder using a interrupt pin connected to the data out of the RF receiver since interrupts are correctly time stamped and buffered until your app is ready to examine them. However, if the reception is continuous or comes in too lengthy bursts, the interrupt buffer would overflow and cause communication to fail miserably. 

 

It's probably harder to emulate the encoder depending on the modulation and data rate but maybe it could be done using SPI.

 

Could you perhaps refer to a description (or picture) on how data is modulated outside the RF link?






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