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crc blocking

Greetings from a Nordic newbie!

I am currently merging an existing AD 433MHz transceiver with a nRF51422 so that I can read an ANT+ heartrate monitor to our existing functionality.

My big question is, can I loose my existing processor.

Right now, I need to process incoming data 1 bit a time from a AD 433MHz radio, at a rate of 1200 baud. So on every cycle from the existing radio I do a CRC comparison of my incoming data (which I need to que) with my CRC block.

This poses two problems:

  1. Can I deterministically respond to the external radios 1200Hz interrupt while the S110 firmware is running? This seems to be in the order of 400uS so it seems I am ok.

and

  1. How long will the nRF51422 block my access to the CRC module? I assume the firmware will lock me out and vice versa so that we do not stand on each others data (is it that easy?).

Thanks in advance Steve

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