USB DFU combined with Buttonless BLE DFU

[enukic]

Hi

I am working with nRF52840 DK  v2.0.1, in SDK 17.0.2., trying to implement combined BLE+USB DFU in my application.

First I tried combining bootloaders from SDK (secure_bootloader/pca10056_s140_ble and secure_bootloader/pca10056_usb), and I used pca10056_s140_ble  as starting point.

I imported all files that are in the pca10056_usb bootloader, along with all skd_config.h definitions and include paths. Also, I changed flash start and flash size, to fit new bootloader into the flash memory.

In my main application, I tried using USB DFU trigger library, to trigger USB DFU (BLE DFU was already implemented before but now it doesn't work)

I connected P0.05 to P.018, as required by the library, and I've enabled PINRESET entry mode in the bootloader sdk_config.h.

Can anyone tell me what am I missing here? The application works fine, I'm using BLE, UART and USB CLI, It's just won't go into DFU mode.

I would appreciate if someone could tell me steps required to combine two bootloaders, and including these bootloaders into the main application?

Thanks!

[enukic]

Another update:

I've added this part of the code to the bootloader's main.c (line 2 and line 3):

 NRF_LOG_INFO("Inside main");
    nrf_drv_clock_init();
    nrf_drv_power_init(NULL);
    ret_val = nrf_bootloader_init(dfu_observer);
    APP_ERROR_CHECK(ret_val);

BLE transport gets initialized, but the USB transport won't initialize now, with the following log in terminal:

<info> app: Inside main
<debug> app: In nrf_bootloader_init
<debug> nrf_dfu_settings: Calling nrf_dfu_settings_init()...
<debug> nrf_dfu_flash: Initializing nrf_fstorage_nvmc backend.
<debug> nrf_dfu_settings: Using settings page.
<debug> nrf_dfu_settings: Copying forbidden parts from backup page.
<debug> nrf_dfu_settings: Destination settings are identical to source, write not needed. Skipping.
<info> nrf_dfu_settings: Backing up settings page to address 0xFE000.
<debug> nrf_dfu_settings: Destination settings are identical to source, write not needed. Skipping.
<debug> app: Enter nrf_bootloader_fw_activate
<info> app: No firmware to activate.
<info> app: Boot validation failed. No valid app to boot.
<debug> app: DFU mode because app is not valid.
<info> nrf_bootloader_wdt: WDT is not enabled
<debug> app: in weak nrf_dfu_init_user
<debug> app: timer_stop (0x2000599C)
<debug> app: timer_activate (0x2000599C)
<info> app: Entering DFU mode.
<debug> app: Initializing transports (found: 2)
<debug> nrf_dfu_ble: Initializing BLE DFU transport
<debug> nrf_dfu_ble: Setting up vector table: 0x000E0000
<debug> nrf_dfu_ble: Enabling SoftDevice.
<debug> nrf_dfu_ble: Configuring BLE stack.
<debug> nrf_dfu_ble: Enabling the BLE stack.
<debug> nrf_dfu_ble: No advertising name found
<debug> nrf_dfu_ble: Using default advertising name
<debug> nrf_dfu_ble: Advertising...
<debug> nrf_dfu_ble: BLE DFU transport initialized.
<debug> nrf_dfu_serial_usb: Initializing drivers.
<debug> app: Failed to initialize transport 1, error 133
<error> app: Could not initalize DFU transport: 0x00000085
<error> app: C:\SDKs\nRF5_SDK_17.0.2_d674dde\examples\dfu\secure_bootloader\main.c:150

 

[enukic]

I'm beginning to think this is due to order of transport initialization. Program initializes BLE transport first. Is there any elegant way to force initialize USB transport first?

[Ridhi]

Hello, i am trying to generate public keys for DFU mode but this error is coming. please help

[enukic]

This is not realated to the problem I'm having.

But try following this tutorial: https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&cad=rja&uact=8&ved=2ahUKEwiEsaDFsqrwAhVpgv0HHYNhBUAQFjAAegQIBBAD&url=https%3A%2F%2Fwww.u-blox.com%2Fzh%2Ffiles%2Fadd-nordic-semiconductor-dfu-sdk-example&usg=AOvVaw0F1DTUvnkQJkzf6uwCH63O

Also, from my experience, you need to install python v2.7.16 and GCC 7-2018-g2-win32, otherwise bootloader making process won't work

[Ridhi]

[Ridhi]

i am able to run secure bootloader and ble uart app example but when generate zip file an error comes

[enukic]

I'd say, focus on the pdf tutorial I've sent you, it has everything you need

[Ridhi]

[Ridhi]

actually i have followed the tutorial but at last stage this issue is coming pls help

[enukic]

Could you tell me the following:

• Which SDK version are you using?
• What DevKit are you working on?
• Which Softdevice are you using?

[Ridhi]

Sdk 17

S140/#sl32

Nrf52840/52832

[enukic]

Since it says "SD_VERSION_FAILURE" in the picture you sent me, I'm assuming it has something to do with the .zip package you made, and the SD version you selected there.

This is what I use to make DFU package for s140 SD, on my nRF52840

nrfutil pkg generate --application ble_app_cli_pca10056_s140.hex --application-version-string "2.0.0" --hw-version 52 --sd-req 0xCA --key-file C:\Users\Em\Downloads\Milestone-1\DFU-test\private.key app_v2.zip

--sd-req 0xCA, this is where you difine SD version I hink, for the s132 you need to select --sd-req 0xCB, but you can check that inside the s132 documentation.

Could you please share the "nrfutil pkg generate" command that you were using?