USB on Thingy:91

[Laurits]

Hi,

I was working with my Thingy:91 all worked fine. Wanted to upgrade to latest firmware and somehow in this process the USB interface stopped working. I switched to use my nRF9160 for programming the Thingy:91 via JTAG cable. I have set SW2 to nRF52 on the Thingy:91 and uploaded Connectivity Bridge firmware - process success. Changing SW2 to nRF91 upload of modem firmware and asset tracker also finishes successful. The Thingy:91 connects to nRF cloud, BUT USB interface Thingy:91 is still dead.

I use only the Nordic Programmer (v3.0.3).

Now the USB has worked few days ago, tried with different cable (but USB port/cable works fine with nRF9160). I looked in Device Manager Win10 during connection of Thingy:91, but nothing shows up. Any idea how I can continue troubleshoot?

Thanks,

/Laurits

[Albrecht Markus Schellenberger]

Hei Laurits, 

Now the USB has worked few days ago, tried with different cable (but USB port/cable works fine with nRF9160). I looked in Device Manager Win10 during connection of Thingy:91, but nothing shows up. Any idea how I can continue troubleshoot?

Now, that is indeed a strange behaviour. I assume that you flashed the Connectivity bridge firmware image included in the latest application and modem firmware package, 2022-06-02_880c82db?

Which version of the Thingy:91 are you operating with?

Regards, 

Markus 

[Laurits]

Hi Markus,

Right now I have the latest version of the Connectivity Bridge flashed into the device, but I also tried an older version ... just for troubleshooting.

The Thingy:91 is PCA20035, version 1.5.0 (2021.3)

Best regards,

/Laurits

[Albrecht Markus Schellenberger]

Hello Laurits, 

Laurits said:

Right now I have the latest version of the Connectivity Bridge flashed into the device, but I also tried an older version ... just for troubleshooting.

The Thingy:91 is PCA20035, version 1.5.0 (2021.3)

Ok thanks, that should be fine :-) Could you try compiling the Connectivity bridge yourself and flashing it to the nRF52840 using the nRF9160 DK?

Cheers, 

Markus 

[Laurits]

Hi Markus,

This is really strange - it worked?! As you suggested I build the latest version of the Connectivity Bridge firmware, but I am surprised the pre-build hex files I downloaded did not work. Thanks anyway for your assistance!

Best regards,

/Laurits

[Albrecht Markus Schellenberger]

Hello Laurits, 

Laurits said:

This is really strange - it worked?!

Ok, nice! I’m glad to hear that it resolved your issue :-)

Laurits said:

As you suggested I build the latest version of the Connectivity Bridge firmware, but I am surprised the pre-build hex files I downloaded did not work. 

I have just flashed the latest pre-complied Connectivity bridge firmware image to my Thingy:91, and everything works as expected. However, my Thingy is of revision 1.4.0. It shouldn’t matter in this case, but anyway. 

Which folder in the firmware package did you choose the Connectivity bridge from? Since I’m using the nRF9160 DK as external debug probe to flash my Thingy:91, I selected the image ../img_app_bl/ thingy91_nrf52_connectivity_bridge_2022-06-02_880c82db.hex.

Cheers, 

Markus