Add BLE to AWS IOT sample

[sguitton01]

Hi all,

I started from the aws_iot example on the nrf7002DK and I am trying to add BLE support on it. Though I soon as I add
CONFIG_BT=y

I get this error : 
Sec Thread] Secure image initializing!
Booting TF-M v2.0.0
[INF][Crypto] Provisioning entropy seed... complete.
*** Booting nRF Connect SDK v3.5.99-ncs1 ***
E: ***** BUS FAULT *****
E: Precise data bus error
E: BFAR Address: 0x20000000
E: r0/a1: �***

I tried to add an hci_rpmsg  conf and overlay to the child image but I still get the error.
Do you know how I can add BLE?

Thank you,

Sylvain

[Sigurd Hellesvik]

Hi,

See Wi-Fi: Bluetooth LE coexistence sample.

Regards,
Sigurd Hellesvik

[sguitton01]

Hi Sigurd,

Thank you for the answer.
Yes I actually know that sample.
Though I can't even add CONFIG_BT=y to my project without having the BUS_FAULT @address 0x20000000

I am assuming that this could be due to the TFM being enabled as when adding the CONFIG_BT the TFM address is changing in the SRAM

Here's without BT enabled

Here's with BT enabled

I tried to disable the TFM though when I do I get this error when building : 
-c C:/ncs/v2.6.0/nrf/drivers/entropy/entropy_cc3xx.c
C:/ncs/v2.6.0/nrf/drivers/entropy/entropy_cc3xx.c:17:10: fatal error: nrf_cc3xx_platform_ctr_drbg.h: No such file or directory
17 | #include "nrf_cc3xx_platform_ctr_drbg.h"
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

What's you thoughts about this?

Thank you,

Sylvain

[Sigurd Hellesvik]

I have looked into this and not been able to figure out what causes this.

When our developers are back after easter I will ask them about this.

[sguitton01]

Hi Sigurd;

FYI, I have the same thing when trying to add the NFC Reader st25r3911b.
Just adding this (below) to my overlay gets me a bus fault also, and it also seems to be caused by the TFM.

In my case I think I would need to remove the TFM

Let me know when you have some updates about this

[sguitton01]

Hi Sigurd,

I just tried with the nrf7002dk_nrf5340_cpuapp instead nrf7002dk_nrf5340_cpuapp_ns and I was able to make it work.

Sylvain