buttoness DFU central: when to start service change

RE: buttoness DFU central: when to start service change

Amanda Hsieh — Wed, 10 Jan 2024 15:22:49 GMT

Hi,

You can refer to the GATT Service Client Example Application example.

-Amanda H.

RE: buttoness DFU central: when to start service change

Smile Jiang — Wed, 10 Jan 2024 01:20:01 GMT

Hi Amanda H

[quote userid="77782" url="~/f/nordic-q-a/107222/buttoness-dfu-central-when-to-start-service-change/463394"]Please be aware that the bonds must be created in the main application, see this answer.[/quote]

------Yes, in periperal, both the app and bootloader were enabled bonds, in nrf5 Central we added DFU_C and BONDS.

Please check the script (the same periperal code for the left and right window):in its left window when the ble central is a smartphone, the peripheral upgrade(with bonding) succeed, Customer's question is the right window when the central is a nrf52 device(based on our nrf5 sdk platform). What the central shall do after the periperal send "service change indication" to cental ? as:

[quote userid="81803" url="~/f/nordic-q-a/107222/buttoness-dfu-central-when-to-start-service-change"]what ble event will central receive for the indication? Namely, when and where central shall start the service discovery??[/quote]

When the central is a smartphone, seem it dealed with the indication so on bootloader there is not warning about "service change",but when central is nrf52 device, there is warning on the periperal (BL) side.

Please give suggestion about what shall do on nrf52 ble central side after periperal sent "service changed indication"?

Regards

Smile

RE: buttoness DFU central: when to start service change

Amanda Hsieh — Tue, 09 Jan 2024 15:06:28 GMT

Hi,

[quote user=""]

The confusion is blocked by after the bootloader print the log:

NRF_LOG_WARNING("Client did not have the Service Changed indication set to enabled." "Error: 0x%08x", err_code);

I see the indication is to tell the central to start service discovery, but what ble event will central receive for the indication? Namely, when and where central shall start the service discovery??

[/quote]

The log is enabled by NRF_DFU_BLE_REQUIRES_BONDS. Please be aware that the bonds must be created in the main application, see this answer.

Regards,
Amanda H.