DFU sequence questions

RE: DFU sequence questions

bjorn-spockeli — Mon, 08 Oct 2018 07:13:36 GMT

jessen: Ah, I thought you were using an older version of the SDK,v11.0.0. A colleague of mine has created a DFU tutorial on GitHub, I recommend taking a look at that.

RE: DFU sequence questions

jessen — Mon, 08 Oct 2018 01:18:48 GMT

Thank you very much! I am sorry, I have not fully described the problem I want to express. The problem is that i want to upgrand thingy52 with my own ble controller,The ble controller is ble654(laird), so i have to implement an app like nrfconncet, i have read the document about dfu, but i don't konw how to implement it, According to the official documentation? can you help me?

RE: DFU sequence questions

bjorn-spockeli — Mon, 01 Oct 2018 13:38:23 GMT

jessen: You write to it like any other characteristic, recommend that you take a look at the BLE DFU Service documentation for more information.

RE: DFU sequence questions

jessen — Sat, 29 Sep 2018 06:12:08 GMT

how to write data to DFU Packet Characteristic?

RE: DFU sequence questions

bjorn-spockeli — Tue, 03 May 2016 14:36:29 GMT

No, enable DFU CCCD Notifications and enabling notifications on the Dfu Control Point Characteristic is the same thing.
If you are writing to the DFU Control point of an application thats been extended with DFU support, then the application will reset the device into DFU mode(i.e. bootloader mode). If you're already in DFU mode, then you should not see a disconnect after writting 01-04 to the DFU Control Point. However, the image size should be written to the DFU Packet Characteristic and not the DFU Control Point Characteristic, as shown in the first link in your question.