How to OTA DFU my DUT via nrf52840 dongle by PC

RE: How to OTA DFU my DUT via nrf52840 dongle by PC

Vidar Berg — Wed, 12 Aug 2020 09:50:49 GMT

Hi,

The port scanner works only with Jlink VCOMs. I'm not sure, but it may be supported in more recent versions of nrfutil.

RE: How to OTA DFU my DUT via nrf52840 dongle by PC

waydychou — Wed, 12 Aug 2020 09:43:05 GMT

Hi Vidar Berg,

I can OTA DFU now by downgrade connectivity fw to "connectivity_1.2.3_usb_with_s132_3.1.hex" you mentioned.

But "pc-ble-driver-py/examples/serial_port_enum.py" still can not enumerate this usb dongle.

Do you know why?

waydy_chou:examples$ pwd
/home/waydy_chou/.local/lib/python2.7/site-packages/pc_ble_driver_py/examples
waydy_chou:examples$ python serial_port_enum.py NRF52
enum_serial_ports: 0 serial pors found
waydy_chou:examples$

RE: How to OTA DFU my DUT via nrf52840 dongle by PC

Vidar Berg — Tue, 28 Jul 2020 08:22:29 GMT

Hi,

It looks like the dongle may be programmed with the wrong connectivity FW version. Please try to program the one attached below and see if you get the same result

Connectivity hex distributed with pc-ble-driver-py v0.11.4 :

devzone.nordicsemi.com/.../connectivity_5F00_1.2.3_5F00_usb_5F00_with_5F00_s132_5F00_3.1.hex

Note: you can program it with the programmer app in nRF connect for desktop

RE: How to OTA DFU my DUT via nrf52840 dongle by PC

waydychou — Fri, 24 Jul 2020 03:02:13 GMT

Hi Hung Bui,

I am using python nrfutil(pc-ble-driver-py) attempt to achieve OTA DFU by nRF52840 dongle.

This is the main purpose.

The dongle can present a virtual com port when I plug-in into PC.

But somehow, I can not enumerate com port(DK is OK) by using the example code provided in "pc-ble-driver-py/examples/serial_port_enum.py".

I am sure the firmware inside the dongle is correct it's flashed by "Bluetooth Low Energy" APP.

My env. as below:

ubuntu:16.04

nrfutil: 5.2.0 (installed by PIP)

pc-ble-driver-py:0.11.4 (installed by PIP)

RE: How to OTA DFU my DUT via nrf52840 dongle by PC

waydychou — Thu, 23 Jul 2020 15:18:09 GMT

Hightlight one point that I am not saying using Bluetooth low energy to OTA DFU but nrfutil python command. Like you said, Bluetooth Low Energy work well and can do OTA DFU well. Iam trying to do that with the command as I mentioned before.

RE: How to OTA DFU my DUT via nrf52840 dongle by PC

waydychou — Thu, 23 Jul 2020 15:04:30 GMT

Yes, I did.

nRF52840 dongle flashed the firmware by the app you mentioned. Then I used it to OTA DFU and saw the error message mentioned before. The procedure, the command all follow the instroction of document. So Idon't know what happented.

If I missing anything?

RE: How to OTA DFU my DUT via nrf52840 dongle by PC

Hung Bui — Thu, 23 Jul 2020 13:58:15 GMT

I can't help if you don't know what you flashed on the nRF52840.

Please try to use nRF Connect - Bluetooth Low Energy application on PC, open the dongle , the app will ask you to flash the firmware on the dongle. After that the dongle can be used to OTA DFU update other devices.

RE: How to OTA DFU my DUT via nrf52840 dongle by PC

waydychou — Thu, 23 Jul 2020 12:52:09 GMT

Hi Hung Bui,

Thank you for quick reply.

Actually, I don't know which version I used in nRF52840 dongle.

l just know it downloaded by nRFConnect windows 10 desktop version.

How can I make it work right now?

Do you have steps for this?

RE: How to OTA DFU my DUT via nrf52840 dongle by PC

Hung Bui — Thu, 23 Jul 2020 12:36:12 GMT

Hi Waydychou,

Could you explain which firmware you flashed on the nRF52840 on the Dongle and which firmware you flashed on the DK ?
The main difference here is that on the dongle it's not the UART interface but the USB CDC interface is used to communicate with the PC.