Reset issue of Adafruit Feather nRF52 Bluefruit LE - nRF52832 Module

I have been facing with Adafruit Feather nRF52 Bluefruit LE - nRF52832 Module.

Whenever the module gets reset the uploaded code in the module stops working. I have tried both the programmer (J-link & Bootloader DFU).

Refer to the attached image of Configuration settings for the module and bootloader.

I uploaded simple Blink Code, but it stops working as I do the followings:

1. When pressing Reset Button

2. Turning On/Off the module

3. Using Serial Monitor

Code is fine as I have tried it with another module and it works even after resetting the module.

Please help me to fix this issue. If it's possible to factory reset the same module let me know the procedure for it.

Here drive link to the video of the Controller with blink code, but when the reset push button is pressed it stops working, and the LED starts a dimmer loop.

drive.google.com/.../1B-KOaVJvTHf0_YNyekeshMlugpItaWex

Top Replies

0 Gough Lui over 2 years ago

You may have a bouncy push button or you may have inadvertently double-clicked the reset button, as some boards have a "double-press" feature which causes the bootloader to be entered. This will result in the LED "breathing" on and off around once per second. Usually if you wait about 10 seconds, it will time-out and go back to normal operation, but some other boards may be stuck in bootloader until you press reset again.
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0 BigG over 2 years ago

Cannot rule anything out... so without seeing your code, I wondered if you have a while (!Serial) in your code as this will prevent code from running until the Serial Monitor is opened.
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0 BigG over 2 years ago in reply to BigG

I finally got to watch the videos. Apologies. That has nothing to do with firmware. As noted by Gough Lui, the way the led fades in and out at the beginning, upon reset, is indicating that it is in bootloader mode. As such, it may be worth updating the bootloader or at least confirm that you have the latest version.

https://github.com/adafruit/Adafruit_nRF52_Bootloader

https://learn.adafruit.com/bluefruit-nrf52-feather-learning-guide/using-the-bootloader

https://learn.adafruit.com/bluefruit-nrf52-feather-learning-guide/introduction
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