ZBOSS NCP build optimization

RE: ZBOSS NCP build optimization

Marte Myrvold — Tue, 06 Aug 2024 12:10:08 GMT

Hi Damien,

The problem can be fixed by adding NOP instructions to time-critical code in sdk-nrfxlib/nrf_802154/driver/, like this:

diff --git a/nrf_802154/driver/src/nrf_802154_request_swi.c b/nrf_802154/driver/src/nrf_802154_request_swi.c
index fe1b43a6..6bb8ab08 100644
--- a/nrf_802154/driver/src/nrf_802154_request_swi.c
+++ b/nrf_802154/driver/src/nrf_802154_request_swi.c
@@ -292,6 +292,10 @@ static inline void assert_interrupt_status(void)
     {                                              \
         assert_interrupt_status();                 \
         func_swi(__VA_ARGS__, &result);            \
+        __NOP();                                   \
+        __NOP();                                   \
+        __NOP();                                   \
+        __NOP();                                   \
     }                                              \
                                                    \
     return result;
@@ -307,6 +311,10 @@ static inline void assert_interrupt_status(void)
     {                                                 \
         assert_interrupt_status();                    \
         func_swi(&result);                            \
+        __NOP();                                      \
+        __NOP();                                      \
+        __NOP();                                      \
+        __NOP();                                      \
     }                                                 \
                                                       \
     return result;

Let me know if this also fixes the issue on your side.

Please note that the -O2 option is non-default, so we cannot guarantee that all nRF Connect SDK components are tested with it.

Best regards,
Marte

RE: ZBOSS NCP build optimization

Marte Myrvold — Wed, 12 Jun 2024 13:39:15 GMT

Hi Damien,

The developers have started looking into it, but I do not have any updates yet.

Best regards,
Marte

RE: ZBOSS NCP build optimization

DaKa — Mon, 10 Jun 2024 11:15:20 GMT

Hello,

Anything new on this?

BR,
Damien

RE: ZBOSS NCP build optimization

Marte Myrvold — Fri, 24 May 2024 13:47:27 GMT

Hi Damien,

I have reported this to the developers. I will let you know when I have an update.

Best regards,
Marte

RE: ZBOSS NCP build optimization

Marte Myrvold — Thu, 23 May 2024 13:30:09 GMT

Hi Damien,

I have been able to reproduce the issue. I am looking into it and will get back to you.

Best regards,
Marte