Understanding the HMAC example (nrf52832 vs nrf52810)

Question

My product needs HMAC using sha256. 
 I looked at the 
RF5_SDK_17.0.0_9d13099\examples\crypto
rf_crypto\hmac 
 It has been written for nrf52832. My product uses nrf52810. 
 After some experimentation, I was able to get it working on nrf52810. 
 I used the oberon backend. I need some clarification about the specific difference between nrf52832 vs nrf52810 that might impact HMAC. 
 1. Do nrf52810 and nrf52832 have the same arm core? And hence the same floating point capabilities? 
 2. Does nrf52810 have an FPU? 
 3. Between the oberon backend and mbed backend, is one better than the other for nrf52810? 
 4. Is there a spec sheet/webpage that contains differences between nrf52832 vs nrf52810. Would be nice to know, so as not to be surprised next time, since I use the pca10040 a lot for testing, but my product is 52810 based. 
 
 Cheers and thanks, 
 Hari

Amanda Hsieh · Accepted Answer

Hi Hari, 
 1. Do nrf52810 and nrf52832 have the same arm core? And hence the same floating point capabilities? 
 2. Does nrf52810 have an FPU? 
 nRF52810 and nRF52832 use ARM Cortex -M4 processor, but nRF52810 doesn't support FPU. See nRF52810/ CPU and support module configuration 
 3. Between the oberon backend and mbed backend, is one better than the other for nrf52810? 
 Not sure what are factors you consider/compare. You can run HMAC Example with these two backends and compare them. 
 This post might be interesting. 
 4. Is there a spec sheet/webpage that contains differences between nrf52832 vs nrf52810. 
 See nRF52 Series comparison for a detailed comparison of the features of the various nRF52 Series chips. 
 -Amanda H.

Understanding the HMAC example (nrf52832 vs nrf52810)

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