9160 anamoly SICA rev 1

[Johan]

Question about errata workarounds for 9160 rev 1 (BO) SICA.

I see these in the errata which are relevant for our project:

[15] REGULATORS: Supply regulators default to LDO mode after reset
https://infocenter.nordicsemi.com/index.jsp?topic=%2Ferrata_nRF9160_Rev1%2FERR%2FnRF9160%2FRev1%2Flatest%2Fanomaly_160_15.html&cp=2_0_1_1_1_6

& 

[31] LFXO: LFXO startup fails
https://infocenter.nordicsemi.com/index.jsp?topic=%2Ferrata_nRF9160_Rev1%2FERR%2FnRF9160%2FRev1%2Flatest%2Fanomaly_160_31.html&cp=2_0_1_1_1_15

I check under fixed issues:

14

REGULATORS

Supply regulators default to LDO mode after reset

So 14 ==> 15 seems fixed in the B0 rev 1 SICA revision if I read this correct.

The [31] anamoly is still an issue to be code corrected at boot up.

I did in main() put the code for it:

*((volatile uint32_t *)0x5000470Cul) = 0x0;
*((volatile uint32_t *)0x50004710ul) = 0x1;


What happens then, is when running these instructions, the chip resets and reboots. 
So it becomes a reset cycle. 

Advice?

[ovrebekk]

Hi Johan

There is no need to manually apply these workarounds, they are both handled by the MDK startup files as you can see here and here. 

Best regards
Torbjørn

[Johan]

We are running 1.5.1. I don't see the fixes there, so I suspect I need to apply some of them manually then, or upgrade to 1.6.0 or 1.7.0.

[ovrebekk]

Hi 

That is interesting, I guess 1.5.1 uses a relatively old MDK version. 

I would recommend upgrading to 1.7.0 if you can, since there has been quite a lot of features added since 1.5.1. 

For a detailed overview of what is added in the various versions you can always have a look at the release notes. 

Best regards
Torbjørn