regarding to buttonless DFU

[djqtsg]

Hi,

I have tried buttonless DFU in SDK 12, for which I have a few questions

(1) Is bootloader not needed if I use Buttonless DFU Template Application? However, SoftDevice is still required.

(2) I have to combine my own application with the Buttonless DFU Template Application. Is it correct?

For the above two questions, see answers below.

However, I failed at the last step. Please see my test steps and the problem in the attached word document.DFU trial SDK 12.docx

[djqtsg]

after reading through the online document, I have come to know that

(1) bootloader is needed

(2) I can add Buttonless Secure DFU Service to my application to achieve buttonless DFU.

Following this link, I managed to let the device reboot from "Nordic_Template" app to bootloader mode "DfuTarg".

The tick is that we need to add

char_md.char_props.write = 1;

in ble_dfu.c () as discussed in here

[djqtsg]

by following this (infocenter.nordicsemi.com/index.jsp, I made a step further:

Please see the log msg of nRF Connect:

V 17:46:48.165 [DFU] Connecting to DFU target...
 D 17:46:48.231 [DFU] gatt = device.connectGatt(autoConnect = false)
 I 17:46:48.534 [DFU] Connected to C1:17:F7:AF:0C:7C
 V 17:46:48.534 [DFU] Discovering services...
 D 17:46:48.534 [DFU] gatt.discoverServices()
 D 17:46:48.534 [Broadcast] Action received: android.bluetooth.device.action.ACL_CONNECTED
 I 17:46:49.014 [DFU] Services discovered
 D 17:46:49.039 [DFU] wait(1000)
 W 17:46:50.052 [DFU] Application with buttonless update found
 V 17:46:50.052 [DFU] Jumping to the DFU Bootloader...
 V 17:46:50.052 [DFU] Enabling notifications for 8e400001-f315-4f60-9fb8-838830daea50