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SDK 13.0.0 Buttonless DFU won't enter boot mode

Mark P. Mendelsohn

Starting notification and then writing 0x01 to the control point does not cause the Buttonless DFU to enter boot mode. LED #1 remains on.

Run time trace show:

APP:INFO:advertising is started
APP:INFO:Connected
APP:INFO:Received indication state 0, notification state 1

Log from LightBlue shows:

17:39:26.322 — Connected to nearby peripheral: Nordic_Buttonless
17:39:26.948 — Discovered nearby peripheral: (null) (RSSI: -94)
17:39:27.291 — Stopping search for nearby peripherals
17:39:36.236 — Characteristic (8EC90003-F315-4F60-9FB8-838830DAEA50) wrote new value: <01>
17:39:39.325 — Starting search for nearby peripherals
17:39:39.840 — Disconnecting from nearby peripheral: Nordic_Buttonless
17:39:39.854 — Disconnected from nearby peripheral Nordic_Buttonless
17:39:40.455 — Discovered nearby peripheral: (null) (RSSI: -78)
17:39:40.515 — Stopping search for nearby peripherals
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    I tested this with an iPhone 5 and LightBlue Explorer, and I did not have any issues putting the device in bootloader mode. I also tested this with nRF Connect for Desktop, i.e. writing 0x0200 to the CCCD in order to enable notifications and then you write 0x01 to the Control Point Characteristic. Same story. Are you using the un-modified buttonless dfu example or have you modified/added buttonless dfu to another application?

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  • 0

    I tested this with an iPhone 5 and LightBlue Explorer, and I did not have any issues putting the device in bootloader mode. I also tested this with nRF Connect for Desktop, i.e. writing 0x0200 to the CCCD in order to enable notifications and then you write 0x01 to the Control Point Characteristic. Same story. Are you using the un-modified buttonless dfu example or have you modified/added buttonless dfu to another application?

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