nRF52DK nRF52832 system not executing the code

[Parth V Shinde]

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]

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]

Yes when I tried a blink program on LED2. It works perfectly, the LED is completely off and completely on for specified time. 

No, I didn't do any hardware changes in the board. I used LCD 16x2 and ADXL345 using TWI, I2C protocol.

I haven't configured UART for BLE. The BT name is not visible when I upload the program. Even in sample programs.

[Asbjørn]

Hello,

Which BLE example are you running and testing with then? Which SDK version is it from? 

Asbjørn said:

If you check the UART log when running a BLE based code example, what is it printing?

This is started by default from the BLE examples in the SDK and printed if you connect a serial terminal to the kit. 

Best regards

Asbjørn

[Parth V Shinde]

UPDATE: The code is running well and BLE is functioning well.

The problem remains is about the Power LED. It still blinks.

[Asbjørn]

Hi Parth,

What changed?

Power LED could be supply issue on the port? Is the board recognised by the computer still?

Best regards

Asbjørn

[Parth V Shinde]

Hello Asbjørn,

I've no idea why the status LED still flickers and LED_2 still glows.

The board works well now. Seems it was a addressing issue from the code. 

Anyways, the malfunction of those LED's does not bother me. This is just a testbench to get things working for me.

Thankyou for your help!!

Best Regards

Parth