Bluefruit LE friend - broken? can it be rescued?

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sociosqu
 
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Joined: Thu Oct 06, 2022 6:30 am

Bluefruit LE friend - broken? can it be rescued?

Post by sociosqu »

Hi,
I just got my Bluefruit LE friend (https://www.adafruit.com/product/2267) yesterday and started to follow the 'Getting Started' instructions on the webpage.
I installed the VCP drivers on my PC and Windows shows the device nicely as serial device (COM6 in my case).
So far so good.
From the point of setting the mode, my device behaves completely different,
The mode LED is not blicking at all. Instead the blue 'CONN' LED is flickering (much faster than 'blinking').
Despite that, I set up a terminal (Putty in my case) according to the terminal settings page, but all I get is gibberish in the terminal window and no nice human readable text.
I was thinking to re-flash the device and tried to follow the corresponding instructions,
(https://learn.adafruit.com/introducing- ... ld-updates)
but also pressing the DFU button >10s did not change anything in the behaviour and the device does not show up in the Bluefruit Connect app.
So, I do have the strong assumption, that something with the nRF51822 is not in order and it constantly resets (Thus the flickering blue LED, which is connected to the nRF51822).
But still, does anyone in this forum have an idea what's going wrong and how the device could be recovered? (Maybe I am lucky :-)
Kind regards,
Lutz

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