nRF52DK nRF52832 system not executing the code

Question

I’m running a self-built BLE application on the nRF52DK board. It used to work fine before, but recently it has stopped working. The board still runs all the sample codes successfully, but when I try to run any BLE sample, the device’s BLE doesn’t appear on my phone anymore. 
 
 I also face a similar issue like you did, LED 2 lit up without even configuring it. 
 Also, the power LED of my board flickers at a constant rate.

Asbjørn · Accepted Answer

Hello Parth, 
 
 Is there something particular that you did before the board stopped working? Did you solder or move some components around? 
 
 The LED2 is showing to be lit up even if you are not enabling it? So have you been modifying some part of the board related to LED2 or it's pin? 
 
 If you check the UART log when running a BLE based code example, what is it printing? 
 
 Basically, the flickering of the status LED, the constant on LED2 and sudden change in behaviour on the BLE example sounds like some part of the board related to the nRF52832 has been changed. Either by accident or intentionally. It could lead to a short somewhere or reduced performance. What if you configure the pin related to LED2 to be off, are you able to switch the LED2 off then? 
 
 Programming the device is still ok I assume?

Best regards 
 Asbjørn

Parth V Shinde · Answer

UPDATE: The code is running well and BLE is functioning well. 
 The problem remains is about the Power LED. It still blinks.

nRF52DK nRF52832 system not executing the code

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