Bootloader programming for nRF52840 Dongle

RE: Bootloader programming for nRF52840 Dongle

ShivImp — Fri, 16 Sep 2022 13:37:26 GMT

Hi Hung

You can close this case. I have parked it.

Thanks for your help

RE: Bootloader programming for nRF52840 Dongle

ShivImp — Thu, 01 Sep 2022 14:50:13 GMT

Hi Hung, I have ordered the cable. It will probably be next week before I can test his. Thanks

RE: Bootloader programming for nRF52840 Dongle

Hung Bui — Thu, 01 Sep 2022 07:34:53 GMT

If it's not broadcasting you would need to check if the hrm example work and if it's broadcasting.
You would need a 10pin cable , like this one to program/debug the dongle from a DK :

https://www.adafruit.com/product/1675

RE: Bootloader programming for nRF52840 Dongle

ShivImp — Wed, 31 Aug 2022 14:09:03 GMT

No. Its not broadcasting. Ok. I will connect the TC2050 and check.

Thanks

RE: Bootloader programming for nRF52840 Dongle

Hung Bui — Wed, 31 Aug 2022 13:53:38 GMT

Have you checked if Bluetooth work ? You board can broadcast beacon advertising ?
As I mentioned the dongle is not a development platform. It's very hard to debug what could be wrong.

If you want to develop an application please either get hold of a nRF52 DK or solder the 10pin SWD debugger port on the dongle and then you can debug it.

RE: Bootloader programming for nRF52840 Dongle

ShivImp — Wed, 31 Aug 2022 08:02:28 GMT

Hi Hung

I did not flash the hex file you provided. I presume its the hex generated from ble_app_hrs . I could compile and this example and load it into the dongle without any error. I could compile my own code and program the dongle without any error messages. The only problem was the functionality - I expected the PWM waveform on port P0.17 of the dongle. But, no waveform is seen after I took the device out of the bootloader mode.

Why should I install the SDK again? The current SDK works fine.

Thanks

RE: Bootloader programming for nRF52840 Dongle

Hung Bui — Wed, 31 Aug 2022 07:42:29 GMT

Hi Shiva,

Have you tried to flash the hex file I provided.

The ble_app_hrs project should be able to compile out of the box. Please show the error you get. Do you have the same error if you compile it for the nRF52 DK instead of dongle?

Could you try to test on a fresh installed SDK ?

RE: Bootloader programming for nRF52840 Dongle

ShivImp — Tue, 30 Aug 2022 15:36:57 GMT

Hi Hung

I used the examples \ble_peripheral\ble_app_beacon to test a simple code generating 2 tones on an I/O port using the nRF52840DK. Its a small project. But, this did not work on the dongle even though I followed the instructions.

When I tried using the example examples\ble_peripheral\ble_app_hrs\pca10059\s140)..there was compilation error related to a API. Comparison of project structure is attached. There are a lot files in the ..hrs\pca10059. Could you provide some insight which files to remove?

Thanksdevzone.nordicsemi.com/.../dongle_5F00_prob2.pdf

RE: Bootloader programming for nRF52840 Dongle

ShivImp — Tue, 30 Aug 2022 10:21:24 GMT

Hi Hung

Thanks for the prompt reply. I will test it and let you know.

RE: Bootloader programming for nRF52840 Dongle

Hung Bui — Tue, 30 Aug 2022 10:16:55 GMT

Hi Shiva,

Have you tried to test with the ble_app_hrs made for PCA10059 (\examples\ble_peripheral\ble_app_hrs\pca10059\s140)

It looks like your beacon example is quite small in size compare to the hrs. Please double check. This is the memory layout of the hrm:

I tested here with a fresh nRF52840 dongle and it worked fine. I attached the hex here that you can test.

Since the nRF52840 dongle was not made to be a development platform. There is a potential issue that if the flash of the fds is used by previous firmware, it's not possible to clear the flash from the bootloader/programmer. And it can crash the application if the fds/fstorage is not expecting anything in the flash area allocated for it.

If you want to use the nRF52840 dongle as a development platform , I would strongly suggest to solder the 10 pins header into P1 port and then you can use a DK to program it as a normal DK/custom board.

devzone.nordicsemi.com/.../ble_5F00_app_5F00_hrs_5F00_pca10059_5F00_s140.hex