nRF52832 MIPs, S132 vs S332

[Adnan Ashraf]

What are the MIPs of nRF52832 with S132 softdevice enabled? Also, changing the softdevice to S332 will affect the MIPs?

Regarding S132 and S332 softdevices, they are all same except that S332 has ANT protocol. If the S332 softdevice is used but the ANT feature is not used at all, will there be any memory and/or performance degradation as compared to S132 softdevice?

Thank you!

[ovrebekk]

Hi 

We don't provide DMIPS numbers for the nRF52832, but the CoreMark-rating is 3.36 pr MHz (so 215 CoreMark at 64Hz). 

If you look at the reference numbers for the ARM Cortex M4 here you will see that we are very close to the reference CoreMark score of 3.40 CoreMark/MHz, so by extension the DMIPS numbers should be very similar as well, and you can use those for reference. 

We don't provide DMIPS numbers for the SoftDevices either, but we include some chapters on processor usage in the respective SoftDevice specification documents (for the S132 you can take a look here). 

For modest use cases where you only send a packet every 100ms or less the SoftDevice processor usage is typically only 1% or lower, which means the impact on available processing power is negligible. 

If you are using the SoftDevices more actively, pushing a lot of packets etc, then you would have to do some benchmarking to evaluate how much the SoftDevice affects available CPU time. 

The BLE features in the S332 should not run any slower than those in the S132, but I will ask the software team to verify just to be certain. I will get back to you on this once I know more. 

Best regards
Torbjørn