nRF Connect for Desktop to download hex file error

[xixili]

I use nRF Connect for Desktop to download hex file(nrf52810).

Use the following example：

nRF5_SDK_15.3.0_59ac345\examples\dfu\secure_bootloader\pca10040e_ble +
nRF5_SDK_15.3.0_59ac345\examples\ble_peripheral\ble_app_buttonless_dfu\pca10040e+
nRF5_SDK_15.3.0_59ac345\components\softdevice\s112\hex\s112_nrf52_6.1.1_softdevice.hex

merge generation SDK_APP.hex.

Download prompt error,Only SDK_APP.hex , the other will not go wrong.
But i use nRfgo Studio download successful.

[Simon]

Do I understand you correctly?

• If you program an other hex file (e.g. nRF5_SDK_15.3.0..\examples\peripheral\blinky\hex\blinky_pca10040.hex) using the nRF Connect Programmer app, it works fine
• If you program the SDK_APP.hex file using nRfgo studio, you don't experience any problems?

Some more questions:

• Could you explain how you created the hex files? Did you follow the steps in BLE Secure DFU Bootloader?
• Could you upload the SDK_APP.hex file as well? Then I can try to recreate your issue.
• What version of the Programmer app are you using?

Best regards,

Simon

[xixili]

yes,If program the SDK_APP.hex file using nRfgo studio, that is no problems.

Programmer  version V3.2.0.

SDK_APP.hex generation step:

nrfutil settings generate --family NRF52810 --application nrf52810_xxaa.hex --application-version 1 --bootloader-version 1 --bl-settings-version 1 bootloader_setting.hex

mergehex --merge s112_nrf52_6.1.1_softdevice.hex nrf52810_xxaa.hex nrf52810_xxaa_s112.hex -o output3to1.hex

mergehex --merge output3to1.hex bootloader_setting.hex --output sdk_app.hex

3716.sdk_app.hex

Do you have \ble_app_buttonless_dfu test_images(nrf52810)?

Thanks!

[xixili]

error log

1070.2019-10-15T03_33_17.005Z-log.txt

[Simon]

I made it work by doing the following

1. Create a new folder "DFU_nRF52810" in Desktop to put all the files in
2. Generate private key
   • "nrfutil keys generate priv.pem"
3. Generate the public key from private
   • nrfutil keys display --key pk --format code priv.pem --out_file public_key.c
4. Put public key in "<..>\nRF5_SDK_15.3.0_59ac345\examples\dfu"
5. Generate settings page from buttonless dfu example
   • Open nRF5_SDK_15.3.0_59ac345\examples\ble_peripheral\ble_app_buttonless_dfu\pca10040e2\s112\ses
   • Remove definitions DEVELOP_IN_NRF52832 and NRFX_COREDEP_DELAY_US_LOOP_CYCLES
   • Build the ble_app_buttonless_dfu example
     • (Located inside "<..>\nRF5_SDK_15.3.0_59ac345\examples\ble_peripheral\ble_app_buttonless_dfu\pca10040e\s112\ses\Output\Release\Exe\ble_app_buttonless_dfu_pca10040e_s112.hex")
   • Generate settings hex file based on this application hex file
     • nrfutil settings generate --family NRF52810 --application ble_app_buttonless_dfu_pca10040e_s112.hex --application-version 3 --bootloader-version 2 --bl-settings-version 1 settings.hex
6. Install micro-ecc
   • https://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.sdk5.v15.3.0%2Flib_crypto_backend_micro_ecc.html&anchor=lib_crypto_backend_micro_ecc_install
7. Compile the bootloader
   •  Open "nRF5_SDK_15.3.0_59ac345\examples\dfu\secure_bootloader\pca10040e_ble\ses"
   • Remove definitions DEVELOP_IN_NRF52832 and NRFX_COREDEP_DELAY_US_LOOP_CYCLES
   • Build it
     • Hex is located in "secure_bootloader\pca10040e_ble\ses\Output\Release\Exe\secure_bootloader_ble_s112_pca10040e.hex"
8. Merge the bootloader and settings page
   • mergehex -m secure_bootloader_ble_s112_pca10040e.hex settings.hex -o merged_settings_and_bootloader.hex
9. Program everything onto the nRF52810 using nRF Connect Programmer app
   • Program merged_settings_and_bootloader.hex
   • Program s112_nrf52_6.1.1_softdevice.hex
   • Program ble_app_buttonless_dfu_pca10040e_s112.hex
10. Run it
    • Press the reset button
    • If you open nRF Connect for mobile, you should see the buttonless app advertising
    • If you press button 4 while reset, you should see the dfu app advertising

ble_app_buttonless_dfu_pca10040e_s112.hex

s112_nrf52_6.1.1_softdevice.hex

merged_settings_and_bootloader.hex

Best regards,

Simon

[xixili]

I have no problem downloading with your hex file.

Is it possible that I am using keil5?

Can you upload the secure_bootloader_ble_s112_pca10040e.hex file?

Thanks!

[Simon]

xixili said:

Is it possible that I am using keil5?

 That might be. Is there any reasons you're not using SES? I would recommend that IDE when developing with Nordic chips. Check out these getting started videos. If you don't want to switch over, I can look into it.

 

xixili said:

Can you upload the secure_bootloader_ble_s112_pca10040e.hex file?

 Here you go: secure_bootloader_ble_s112_pca10040e.hex

Best regards,

Simon

[xixili]

Sorry, I have not used SES.

I successfully used your secure_bootloader_ble_s112_pca10040e.hex file.

I have no problem compiling with hex files using SES. Can you try to compile keil5, or generate a hex file for me to try?