Combining MQTT over wifi with OTA BLE

[saiff]

Hi, i wanted to add OTA DFU to an MQTT application i coded using zephyr APIs on my nrf52840DK with nrf7002ek. 

The problem is that MQTT takes already a lot of RAM and flash memory that eventually there's no more room for BLE functionalities, is there a way to have a "lighter" MQTT application, or is it just impossible to have them both?

Thanks in advance,

Kind regrards,

[Menon]

Hello,

It's hard to say if it's because of the excessive memory usage. Have you tried debugging to see where exactly the application is crashing? I would recommend checking the memory report to get a detailed idea of the memory used.

Kind Regards,

Abhijith

[saiff]

Hi again,

I've tried debugging actually but everything seems to crash at the very start, even though every module works perfectly fine one it's own, i think it's just not meant for the nRF52840 to supprt FOTA over BLE and a Wifi application at the same.

Thank you for your help tho i was able to optimize some of my applications thanks to your ressources.

Kind regards.