Develop Ublox NINA-B3 with Mbed is easy and possible ?

[Justin_Yeh]

Hi Sir

I'd wnat to develop FW of Ublox NINA-B3 module by Mbed-OS, it includes nRF52840 chip.

Could I just enable the target "NRF52840_DK" and just modify the GPIO number to NINA-B3 module pin ?

Thanks.

[haakonsh]

Could I just enable the target "NRF52840_DK" and just modify the GPIO number to NINA-B3 module pin ?
-Yes, i think so, but take to verify that you've got a LFXO in the module, otherwise the examples that target the DK wont run if they require LFXO. In that case you just modify the example code to use the internal LF rc oscillator.

I recommend that you use FreeRTOS instead of Mbed because we do not have that great of support for Mbed on the nRF52840. We're also moving towards ZephyrOS support as a core part of our future SDKs. 

[Justin_Yeh]

Thanks for your information.

The Mbed seems only contain SDK14.2. if I want to use SDK15 function "DFU by USB. " It will become hard to do, is it?

[haakonsh]

Aah, I was not aware we Mbed supported the nRF52840, then it should be easier for you, but be aware that you might have to rely on ARM for support as we're not that skilled in mbed. 

I'm afraid I do not know how hard or easy it is to port SDKs with mbed. You might want to stay on SDK14.2 and just grab the USBD driver from SDK15 if that's possible. 

[Justin_Yeh]

Hi Sir

Could I use SDK15 open bootloader as the bootloader, and use Mbed SDK14.2 as application ?

We need the function DFU over USB .

[haakonsh]

We do not know mbed well enough to give you a definit answer. You will have to try it out for yourself :/