How to unblock the CPU during connection intervals with S110 v7.1.0?

[Håkon Alseth]

How do I unblock the CPU with the S110 v7.1.0?

[Lucas]

I attempted this on two chips:

nRF51822-QFAAG0

nRF51822-QFACA1

In both cases I saw performance increases. Similar to what you showed above it isn't perfect. The CPU does block occasionally regardless of if CPU blocking is disabled. I was under the impression that this would only improve performance for hardware revision 3. I guess it works for hardware revision 2 as well? Is this expected behavior?

[Hung Bui]

@Lucas: It's only safe to unblock the CPU on XLR3. On chip version 2 (QFAAG0) there are some PANs that don't allow CPU to be concurrent when the softdevice is active. Please have a look at the release note on S110 v8.0 at Changes section.

[Milan]

I use SDK v8.0.0 and latest softdevice s110. Do I need to do this in my code for performance improvements?

C:\Program Files (x86)\Nordic Semiconductor\nrf51\bin>nrfjprog --memrd 0x1000005
C --n 4
0x1000005C: FFFF0086                              |....|

[Nikolaus Wittenstein]

Is this still required in SDK 9?

[hawk]

I use the old SDK 5.2.0 and S110 6.0.0; I use the app timer to count sec,min,hour(make one time clock), and found that the second of mine is less after i set an initial sec/min/hour. how to avoid delay the app timer of old SDK.