Can't select device in DFU mode using nRF Toolbox

RE: Can't select device in DFU mode using nRF Toolbox

AmbystomaLabs — Tue, 07 Nov 2017 18:12:12 GMT

I'm glad I could help out. Please let me know how it works out.

RE: Can't select device in DFU mode using nRF Toolbox

jm — Tue, 07 Nov 2017 17:44:13 GMT

@AmbystomaLabs Thank you very much for your kind answers. I seem to have a lot of silly questions because of lack of knowledge. I have not solved it yet, but I'll continue to try it based on your advice. Best,

RE: Can't select device in DFU mode using nRF Toolbox

jm — Tue, 07 Nov 2017 17:38:08 GMT

@Hung Bui Thank you for your comment. Unfortunately, I'm using SDK v10. However, I think that tutorial might be useful to understand the procedure for implementing bootloader. Thank you so much!

RE: Can't select device in DFU mode using nRF Toolbox

AmbystomaLabs — Tue, 07 Nov 2017 13:22:47 GMT

If it doesn't go into dfu mode then you are either loading the wrong file, or do not have an nRF51DK. You should verify both the model of your DK and the file name precisely! Many of the files have similar names but are not similar at all.

The file is: dfu_dual_bank_ble_s130_pca10028.hex

Your dk should be model# pca10028

RE: Can't select device in DFU mode using nRF Toolbox

AmbystomaLabs — Tue, 07 Nov 2017 13:18:02 GMT

JM, yes if you use the precompiled hex you do not need to download the project. It is ready to go and the image includes the SD. Once loaded your DK will go straight into dfu mode.

RE: Can't select device in DFU mode using nRF Toolbox

Hung Bui — Tue, 07 Nov 2017 12:31:01 GMT

@jm: Which SDK are you using ? If you are SDK v12 and above, you can follow this instruction.

RE: Can't select device in DFU mode using nRF Toolbox

jm — Mon, 06 Nov 2017 23:31:08 GMT

Thank you for your quick reply. Did you mean I don't need to download the project if I use the precompiled hex file (you referred to)?

Then, is the following procedure correct in nRFgo Studio?

1.Device Manager->nRF5x Programming->Erase all

2.Device Manager->nRF5x Programming->(Program Application tap) select that hex file->Program

And does this procedure make the device show up as DfuTarg? Because I followed above procedure, but I can't find my device. Please advise whether there is a problem in the procedure or an unexpected error.

RE: Can't select device in DFU mode using nRF Toolbox

AmbystomaLabs — Mon, 06 Nov 2017 22:49:20 GMT

The DFU project is solely the bootloader. So if you mean you compiled the project and installed it then you would still need to load the SD130. Only the precompiled hex file I referred to has a complete image with SD and bootloader/dfu. As far as the error, not sure. Normally nRFGo just complains if the hex has code in already programmed space. Either way when you are programming it, you always best to start fresh and do and "erase all".

RE: Can't select device in DFU mode using nRF Toolbox

jm — Mon, 06 Nov 2017 22:25:09 GMT

Thank you! Your comment helps me understand what the problem was.

1.I flashed that hex file using nRFGoStudio and tried to select, but I couldn't find my device.

2.So I tried to download Keil project "..\examples\dfu\bootloader\pca10028\dual_bank_ble_s130\arm5_no_packs\dfu_dual_bank_ble_s110_pca10028" , but the following error has occurred.

Reading flash area to program to guarantee it is erased. ERROR: The area to write is not erased.

How can I fix it?

RE: Can't select device in DFU mode using nRF Toolbox

AmbystomaLabs — Mon, 06 Nov 2017 20:57:30 GMT

If it doesn't show up as DfuTarg in the nRFToolbox then it is likely not in DFU mode.

It is not clear from what you have stated that you ever flashed it with SD and DFU code and further that you have put it into DFU mode. Some of the DFU examples do buttonless DFU and others require that you initiate DFU mode with a button press.

Since the link you referenced was for SDK11, I would recommend you try some of the precompiled DFU examples in the DFU folder of that SDK. in SDK/examples/dfu/bootloader/hex/ you will find dfu_dual_bank_ble_s130_pca10028.hex which is for nRF51. Just do an erase all from nRFGoStudio then use the application tab to flash this hex file only. It has both bootloader and SD, so it all you need. Once it reboots your DK will go straight into DFU mode since it doesn't have an app loaded.