Failing to program the xiao BLE SoC via the nRF_DK board + XIAO expansion board

Products & Technology
#1

I’m trying to program the Xiao BLE device, while mounted on the XIAO expansion board, using the nRF52840 DK board.
I’ve connected the SWDIO, SWDCLK, VTG (to 3v3) and GND DETECT (to GND)
I’m using windows 11, and the latest nRF connect Application + Programmer app.
I press reset twice on the XIAO BLE, to enter boot loader mode.
I select the “XIAO nRF52840 Sense” device, but the programmer fails to detect it

“Unsupported device. The detected device could not be recognized as neither JLink device nor Nordic USB device.”

image

Can anyone assist in allowing me to program the XIAO BLE Sense via nRF programmer?

#2

20230302_112210
20230302_1122101705×2563 474 KB

#3

20230302_112149
20230302_112149987×1621 251 KB

#4

20230302_112131
20230302_1121311054×1582 460 KB

#5

Hi, doesn’t look connected properly, look at what I have…
HTH
GL;-)

5
51200×1200 165 KB

switch to the top row of pins and swap the red (GND) and Blue (3v3)wires. Your SWCLK is Yellow and data is green AOK,

#6

PJ , thanks for your answer.
I have double checked the 3v3 and GND signals on the XIAO expansion board, and they are OK.
I even tried to use the VDD–>3v3 instead of VTG–>3v3, and also tried GND–>GND instead of
“GND detect”–>GND.
nothing worked.
I wonder:

  1. did you need to connect the RST pin to the JLINK, to make it be able to identify the XIAO?
  2. are the connections marked in yellow necessary?
    image
#7

this solved the issue.

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