nRF connect Bluetooth Low Energy Unable to create adapter (Not able to find COM6).

[Aitor Zabalo]

Hello,

I am evaluating the module MBN52832 from Murata (Using the development kit). I have installed nRF Connect v2.3 and I have installed and launched Bluetooth Low Energy app. I select the serial port (in this case COM6) . I see the error below. Not able to find COM6.

If I launch RSSI Viewer and I select COM6, it works perfectly, and I can see the different frequencies signal strength and I can read in the log COM6 is open.

I want to check the simultaneous connections of the module.

How can I solve this?

Thanks in advance,

Aitor

[Mttrinh]

Hi,

Are you using nRF Connect on Windows? If so, can you try updating Windows and see if that helps.  

[Mttrinh]

Can you try a different port to see if that changes anything?

Can you erase your board then select the serial port? See if there is a pop up asking if you want to program the required firmware.

[Aitor Zabalo]

in my computer I have only one port, this one:

And when I change the App (RSSI Viewer to Bluetooth Low Energy) , I selecct the COM6 port and I have this message:

I press yes, and I still have the same problem.

[Mttrinh]

Have you tried to re-program the J-Link Interface MCU Firmware? You can find it here.

[Aitor Zabalo]

I wasn't able to reprogram the J-Link Firmware. I think the way to do it is (In Muratas MBN52832DK): with SW3 button pressed (I put a button and check the BOOT signal), unplug and plug the USB connector and an explorer windows should appear. It doesn´t.

If the explorer appeared, I should drop the J-Link OB-SAM3U128-V2-NordicSemi 170724.bin file to the new drive that appears and that’s the way to reprogram the firmware.

I have programmed the Development Kit twice, with Proximity demo first and then with Heart rate monitor, and I could connect to the Bluetooth via nRF connect app.

How can I install the J-Link OB-SAM3U128-V2-NordicSemi 170724.bin file?

Thanks in advance,

[Mttrinh]

I'm not sure how to enter bootloader on the MBN52832DK, but on the nRF52832 DK you have to hold the BOOT/RESET button which is pin P0.21. 

Which Jlink version do you use? Can you try downloading the J-Link Software and use the J-Link Configurator to replace the firmware?(Inside J-Link Configurator,right click on the device and press "Replace firmware")