https://devzone.nordicsemi.com/f/nordic-q-a/679/ble-crc-calculationHi, I&#39;m writing a little piece of software using direct access to the radio registers in NRF51822. Is NRF51822 capable of calculating BLE checksum in hardware? As far as I&#39;m concerned BLE standard uses x^24 + x^10 + x^9 + x^6 + x^4 + x^3 + x + 1 polyen-USTelligent Community 13Thu, 29 May 2014 02:26:05 GMThttps://devzone.nordicsemi.com/thread/3423?ContentTypeID=1Thu, 29 May 2014 02:26:05 GMT137ad170-7792-4731-bb38-c0d22fbe4515:9416e4c1-fd09-46aa-84a4-354f7c9d2926volta77<p>Any body know how to calculate bluetooth low energy CRC ? I tried to calculate the Advertising packet CRC captured by TI LE sniffer and tried the possible bit ordering of PDU but still got the mismatch CRC. Can someone tell me the right bit ordering. Give me a example about bit ordering on the air and CRC calculation is better.</p> <p>for example,</p> <p><a href="http://e2e.ti.com/cfs-file.ashx/__key/communityserver-discussions-components-files/538/4353.btproblem2.png">e2e.ti.com/.../4353.btproblem2.png</a></p> <p>how to get the CRC=0xA4E2C2 at above link in packet number=839 ?</p> <p>Thanks a lot.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/3422?ContentTypeID=1Fri, 18 Oct 2013 06:39:52 GMT137ad170-7792-4731-bb38-c0d22fbe4515:f39e5894-834e-42bc-a51f-2d22b6d23d0aMaciej Baster<p>Apparently, it is. It was my mistake because I was calculating CRC over whole packet including access address field which according to the standard should be omitted.</p><div style="clear:both;"></div>