Implementing MQTT on nrf52840DK and nrf7002ek

[saiff]

Hi,

I've been trying to test the "wififund_less4_exer1_solution" on my nrf52840dk + nrf7002ek but i keep getting these results

I tried creating a "nrf52840dk_nrf52840_cpuapp_ns.conf" and "nrf52840dk_nrf52840_cpuapp.conf" as follows

But then i got a new error "region `RAM' overflowed by 1420 bytes" even tho my board has 256Mb of RAM which i thought should be enough for MQTT implementation

So finally i tried reducing  CONFIG_HEAP_MEM_POOL_SIZE from 153600 to 88064, the building went fine but when i flashed it to the board this is what i got

So now i dont really know what should i do to make it work.

Thanks in advance

[saiff]

Turns out i was using TF-M functions while my board don't support it, it's working now

[Muhammad Usman]

Hi Saiff

How you solved that?

have you tried wififund_less2_exer3_solution? I am facing the same issue that you mentioned! 

thanks and regards,

[saiff]

Hi muhammad,

i haven't tried that exemple yet, but if you're working on an nrf52840dk and faced this same error, create a folder named "boards", create a file and name it "nrf52840dk_nrf52840.conf". in this file copy and paste this: 

CONFIG_WIFI_CREDENTIALS_BACKEND_SETTINGS=y
CONFIG_FLASH=y
CONFIG_FLASH_PAGE_LAYOUT=y
CONFIG_FLASH_MAP=y
CONFIG_NVS=y
CONFIG_SETTINGS=y
CONFIG_SETTINGS_NVS=y

then don't forget to add it as a kconfig fragment in the build page like this: 

Let me know if this sloves your problem,

regards,

[Muhammad Usman]

Hi Saiff!

Thank you so much for your time and support! 

Sorry,  I am unable to connect (wififund_less2_exer3_solution )with the AP when trying to connect via Android app.

For simplicity, I tried wififund_less2_exer2_solution to bypass the android app 

but still, the output is the same i tested with static CREDENTIALS as well as via command shell but same error -134

Is it possible for you to test wififund_less2_exer2_solution  at your end?

Yes, I am using nrf52840dk + nrf7002ek

Thanks & Regards,

Muhammad Usman

[saiff]

Hi Muhammad,

wififund_less2_exer2_solution is working perfectly fine at my end, in steps 12.2 and 12.3 try doing what i told you in my first reply, and set

CONFIG_HEAP_MEM_POOL_SIZE=129023 (in the memory section, in your prj.conf file, change it from the original value 153600 to 129023) .

that way it should be working good.

Regards,

Saif

[Muhammad Usman]

Hi Saiff

Thank you much again for your time and concern, I followed your instructions, and when I set 

CONFIG_HEAP_MEM_POOL_SIZE=129023

in Cmakelist.txt set(SHIELD nrf7002ek)

This time error message is different, Multiple OK and err=-22

it makes no difference in the output, whether I add .conf file or not as mentioned in the below image.

 

Is it possible for you to share your project with me without building conf ?

or Further Help regarding that

Again Thanks & Regards,

Muhammad Usman