bootloader issue during flashing

RE: bootloader issue during flashing

Amanda Hsieh — Thu, 27 Aug 2020 10:57:54 GMT

Hi,

Vidar made an example that supports serial DFU over UART from the application here.

-Amanda H.

RE: bootloader issue during flashing

ostelmakh — Wed, 26 Aug 2020 06:47:46 GMT

If I want to be able to switch to dfu mode, should my application contain something? Should I merge it with a bootloader or softdevice before creating a package?

I tried many different options but still every time after executing the command

nrfutil dfu serial -pkg app.zip -p / dev / ttyACMO

the application starts, but I cannot connect to the device via usb without a j-link

RE: bootloader issue during flashing

ostelmakh — Tue, 25 Aug 2020 13:08:32 GMT

Yes, I tested - the same result

RE: bootloader issue during flashing

Amanda Hsieh — Tue, 25 Aug 2020 11:45:31 GMT

What is your application? Have you tested with hrs_application_s140.zip under nRF5_SDK\examples\dfu\secure_dfu_test_images\uart\nrf52840?

-Amanda H.

RE: bootloader issue during flashing

ostelmakh — Tue, 25 Aug 2020 10:39:40 GMT

Thank you for answer!

I use nRF52840.

I tried s140, but anyway it doesn't work.

--sd-req 0xCA s140_nrf52_7.0.1_softdevice.hex

Also my application doesn't work with softdevice, but without it - works

RE: bootloader issue during flashing

Amanda Hsieh — Mon, 24 Aug 2020 12:48:13 GMT

Hi,

Are you use nRF52840DK (pca10056), nRF52832DK (pca10040) or nRF52840 Dongle hardware (PCA10059)? I see you generate DFU package with blinky_pca10059_mbr.hex. Do you use nRF52840 Dongle hardware (PCA10059)?

For nRF52832, you can use s132, but you should use s140 for nRF52840. Then you should check the --sd-req config again.

If you use nRF52840 Dongle hardware (PCA10059), Note that the dongle must be in bootloader mode to receive a new DFU image. Please have a look at this tutorial for more details.

-Amanda H.