Integrating buttonless DFU: on start up ble_dfu_buttonless_async_svci_init() returns "NRF_ERROR_SVC_HANDLER_MISSING"

RE: Integrating buttonless DFU: on start up ble_dfu_buttonless_async_svci_init() returns "NRF_ERROR_SVC_HANDLER_MISSING"

Vidar Berg — Tue, 03 Sep 2019 09:47:38 GMT

Seems like NRF_DFU_BLE_REQUIRES_BONDS has been renamed to NRF_DFU_BLE_BUTTONLESS_SUPPORTS_BONDS in the template app. I haven't noticed it before now. Anyway, your app can support bonding even if NRF_DFU_BLE_BUTTONLESS_SUPPORTS_BONDS and NRF_DFU_BLE_REQUIRES_BONDS are both set to 0. The difference is that the link can't be encrypted while the device is in bootloader DFU mode.

RE: Integrating buttonless DFU: on start up ble_dfu_buttonless_async_svci_init() returns "NRF_ERROR_SVC_HANDLER_MISSING"

nrbrook — Tue, 03 Sep 2019 07:42:47 GMT

If bonding is used in the main application, NRF_DFU_BLE_REQUIRES_BONDS must be 1 for the bootloader and NRF_DFU_BLE_BUTTONLESS_SUPPORTS_BONDS must be 1 in the application. If you don’t want to support bonding at all, both should be 0. I don’t think NRF_DFU_BLE_REQUIRES_BONDS is used in the buttonless dfu App example, it is only used in the boot loader. I was attempting to support bonding but not require it, this is not allowed (really the App define should be REQUIRES_BONDS too)

RE: Integrating buttonless DFU: on start up ble_dfu_buttonless_async_svci_init() returns "NRF_ERROR_SVC_HANDLER_MISSING"

Vidar Berg — Tue, 03 Sep 2019 05:46:44 GMT

nrbrook, this is for sharing of bond information between app and bootloader so you can encrypt the link in DFU mode. The main application can support bonding independent of the "NRF_DFU_BLE_REQUIRES_BONDS" setting.

RE: Integrating buttonless DFU: on start up ble_dfu_buttonless_async_svci_init() returns "NRF_ERROR_SVC_HANDLER_MISSING"

nrbrook — Mon, 02 Sep 2019 14:42:17 GMT

According to your collegue here bonding must be required or not supported at all

RE: Integrating buttonless DFU: on start up ble_dfu_buttonless_async_svci_init() returns "NRF_ERROR_SVC_HANDLER_MISSING"

Vidar Berg — Thu, 24 May 2018 12:27:28 GMT

Hello Jim,

Have you done following:

Verified that NRF_DFU_BLE_REQUIRES_BONDS is set to the same value in both bootloader and app. I would recommend to set it to '0' unless you need the additional security
Initialized the SVC interface exactly as in the buttonless template example
Ensured that the bootloader is present in flash when you debug the application

RE: Integrating buttonless DFU: on start up ble_dfu_buttonless_async_svci_init() returns "NRF_ERROR_SVC_HANDLER_MISSING"

Jim — Thu, 24 May 2018 07:34:22 GMT

Hello! I also encountered the same problem as you. Can you solve this problem now? How was it resolved?

RE: Integrating buttonless DFU: on start up ble_dfu_buttonless_async_svci_init() returns "NRF_ERROR_SVC_HANDLER_MISSING"

Vidar Berg — Wed, 02 May 2018 12:49:45 GMT

Hi,

The buttonless DFU implementation uses Supervisor calls to access bootloader functions from the main application, same interface as is being used between SoftDevice and user applications. In this case, the interface is being used to exchange bonding information with the bootloader where nrf_dfu_set_peer_data_init() is the SV instruction to set up the interface.

The fact that nrf_dfu_set_peer_data_init() doesn’t return might indicate that the SVC exception is not being forwarded to the bootloader code where the SVC handling for NRF_DFU_SVCI_SET_PEER_DATA is implemented. Did you make sure to call nrf_dfu_svci_vector_table_set() prior to calling nrf_dfu_set_peer_data_init()?

More on the SVC interface: http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk5.v15.0.0/lib_svc.html?cp=4_0_0_3_47.

RE: Integrating buttonless DFU: on start up ble_dfu_buttonless_async_svci_init() returns "NRF_ERROR_SVC_HANDLER_MISSING"

Eric Wittinger — Tue, 01 May 2018 23:05:33 GMT

Update on progress.

discovered the #define NRF_DFU_BLE_REQUIRES_BONDS was set to 0 for the bootloader, and set to 1 for the application.

Now both are set to 1 now. The problem has changes slightly.

Th application now seems to hang and never return from "ble_dfu_buttonless_async_svci_init()" specifically from the following call:

// Initialize the asynchronous SuperVisor interface to set peer data in Secure DFU bootloader.
ret_val = nrf_dfu_set_peer_data_init();
VERIFY_SUCCESS(ret_val);

Any ideas on what is causing this. When I search the project to look at "nrf_dfu_set_peer_data_init()" I can't find it anyplace...

Thanks for the help.