k_sleep() and printk() are not working on nrf54L15 dk

[Archiet]

Hi there,

I am following  nRF Connect SDK Fundamentals and it looks like that both k_sleep() and printk() are not working.

GPIO is working but I am not sure why these two functions do not work.

Regarding printk(), I can see that CONFIG_SERIAL/CONFIG_CONSOL/CONFIG_UART_CONSO are all equal to y. So I assume nothing is needed to configurate.

Regarding k_sleep(), i have no idea what to be checked.

Could you give some hints to me so I could be able to make them work?

Thanks a lot!

[Kenneth]

Hello,

If you for instance use the solution:
https://github.com/NordicDeveloperAcademy/bt-fund/blob/main/v2.8.x-v2.7.0/l2/l2_e1_sol/src/main.c 

Does it not work as expected? Maybe you are forgetting the K_MSEC() macro inside k_sleep()?

Kenneth

[Archiet]

Hi there!

I have used the same files which I attached to previous reply on nrf52840 DK, both k_sleep()/k_msleep() and printk() are working.

Besides, I have used Bluetooth LE LBS example on both DKs, nrf52840 DK can work but nrf54L15 DK.

Both DKs are using 2.8 SDK and VS code for development. Since everything is the same except hardware, may I now whether there is further configuration on top of the examples' setting? Or what should I do to bring nrf54L15 DK to work just like what nrf52840 behaves?

Thanks!

[Kenneth]

You have two different builds here, and you build one for the nrf52840dk and the other for the nrf54l15dk?

If you haven't already, I suggest to run through the devacademy course, just to ensure we are not overlooking something here: https://academy.nordicsemi.com/courses/nrf-connect-sdk-fundamentals/ 

Kenneth

[Archiet]

Hi there!

Yes there are always two builds, one for nrf54l15 DK and another one for nrf52840dk. Target board of nrf54l15 DK was mentioned before. nrf52840 DK is for counter check purpose. I have tried several sample codes from ncs fund and bt fund on these two DKs, it always turns out that only nrf52840 DK works but nrf54l15 DK. Same codes, same config file and same procedures are applied to both DKs. The only differences are build and target board. To simplify the problem, may I ask if you could run the files I attached to previous reply on your nrf54l15 DK? Thanks!

[Kenneth]

On the nRF54L15 DK there should be a white label with "PCA10156", can you provide the marking on the white label?

Kenneth

[Archiet]

Here you go, thanks!

Besides, do you know how to use external Jlink Plus instead of the on board debugger to flash program to the nrf54l15 chip? 

Thanks!

[Kenneth]

Hi,

Maybe it's something wrong with your DK, but if you open the \zephyr\samples\hello_world example, and replace main.c with

#include <stdio.h>
#include <zephyr/kernel.h>

static uint32_t counter;

int main(void)
{
	printf("Hello World! %s\n", CONFIG_BOARD_TARGET);

	while(1)
	{
		k_msleep(1000);
		counter++;
		printf("Hello World! %s %d\n", CONFIG_BOARD_TARGET, counter);
		if(counter==10)
			return 0;
	}

	return 0;
}

Don't you get simply something like this, with 1second delay between lines:

Kenneth

[Archiet]

Hi there! 

I am not able to see the the 1s delay or printf message. However, I can use buttons to trigger on/off of LEDs, both polling and interrupt work.

[Archiet]

Hi there! I think I can only see the first printf which is located outside while loop from serial port. Those inside the while loop are missing.