PCA10056 v3.0.1 cannot run the matter example of NCS2.6.0

[zero]

Dear support team,
I now have three PCA10056 v3.0.1 versions of nRF52840-DK. After connecting the development board to the PC, I downloaded the \v2.6.0\nrf\samples\matter\light_switch example. I opened the serial port to view the log. There is no log information, and LED1 does not flash. , indicating that the matter example is not running; download the \v2.5.2\nrf\samples\matter\light_switch example, open the serial port to view the log, there is matter log output, and LED1 will flash, indicating that the matter example has been run; 3 PCA10056 v3.0.1 phenomena consistent. Please tell me why the matter example of ncs2.6.0 cannot be run on the PCA10056 v3.0.1 development board? Please help analyze the cause and give a solution.
I found an nRF52840-DK with PCA10056 v0.9.2, which can run the matter example of ncs2.6.0.

BR,

Zero

[Hieu]

Hi Zero,

I don't have a nRF52840 DK v3.0.1 with me at the moment and could not reproduce your observation with my v3.0.0.

I will try to get a v3.0.1 and test tomorrow.

To rule out any possible differences, could you please try with this hex file?
matter_light_switch_260_nrf52840dk_nrf52840.hex
It is my compilation of the Matter Light Switch sample on NCS v2.6.0.

BR,

Hieu

---

Please be informed that our team is currently having reduced availability due to the Easter holiday. There will be some delays in our response during this time, but we will respond to you at the earliest opportunity. Our apologies for the inconvenience.

[zero]

Hi Hieu，

I burned the hex you compiled onto the PCA10056 v3.0.1 board, but the phenomenon is the same and it cannot run.

At the same time, I asked my colleague to borrow a v3.0.0 52840-DK, which can indeed run the matter examples of ncs2.6.0. I also verified that the v3.0.2 DK cannot run the matter examples of ncs2.6.0.

BR,

Zero

[zero]

Hi Hieu,

Hieu said:

What about 2.4.x and 2.5.0? This nuance is important for our current problem.

I don't have the v3.0.1/v3.0.2 DK anymore that can't run the "'matter" example

BR,

Zero

[Hieu]

Hi Zero,

We have recorded this issue. For the time being, is this "fix" satisfactory for you? We will continue to investigate and work on a better fix, but your insight could help us with prioritization.

If you see a large impact, could you please also start conversation with your Nordic Sales contact?

BR,

Hieu

[zero]

Hi Hieu,

This solution is currently acceptable. But please really fix this problem as soon as possible.

BR,

Zero

[Hieu]

Hi Zero,

A fix was made in the Zephyr upstream: https://github.com/zephyrproject-rtos/zephyr/pull/71373.

and cherry picked into NCS: https://github.com/nrfconnect/sdk-nrf/pull/14812.

It should be fixed in the next release. I cannot comment on when that is, however.

You could try to cherry pick the fix as well.
The issue can be reproduced on a factory condition DK, not necessarily the 3.0.1 or newer, if you want to verify the fix.
I have not verified this, but to "unfix" a DK to be susceptible to the issue again, you can use this overlay:

&mx25r64 {
	writeoc = "pp";
	readoc = "fastread";
};

 

BR,

Hieu

[zero]

Hi Hieu,

I tested it and added: &mx25r64 {
writeoc = "pp";
readoc = "fastread";
};
52840-DK cannot run the matter example downloaded from ncs2.6.0. You can reproduce the problem and then use nrfjprog --qspieraseall.
But when the 52840-DK is reset after powering off and on, it cannot run. What difference does erasing bring to the flash itself? Or does Brand new DK mean there is something different about mx25r64 that causes this problem?

BR,

Zero

[Hieu]

Hi Zero,

We will update our Known Issue database with it, but for now, my colleague Sigurd described the issue here:  RE: spi_flash is not running on nRF5340DK out of box .

In NCS v2.5.2 and v2.6.0, a driver update was made that expects the flash device to be in Quad I/O mode.

However, in a factory/brand new state, the flash device is not in Quad I/O mode.

nrfjprog --qspieraseall fixes it, because the command doesn't just erase the flash device, but also set the device into Quad I/O mode in its non-volatile configurations. 

BR,

Hieu

[zero]

Hi Hieu,

Got it, thanks for the support

BR,

Zero

[Hieu]

My pleasure to help.

BR,

Hieu