NRF52DK ble_uart connection problem

[KYUBEEN]

Hi, I am trying uart example now, not first time. I made it and check the receiving and transmitting data through ble last week.

The problem is it is not working now. Building and loading is completed but it is now connected with my phone.

I think the problem is from another example, ble_proximity. I did this one last week and it worked.

Now, when I run ble_uart example, the device name is shown as "Nordic Prox", which is set from ble_proximity example.

When I click the "Nordic Prox" in my toolbox, uart, It shows the following dialog.

 

Seems connecting, but not connected, with the LED is light on.

So the question is

1. Is the example I ran before remains after I run another example?

2. If so, how can I remove the prior example?

3. Or not, what could be the reason for that problem?

plus, Im using Keil uVision5, and SDK 12.2 and Termite

I am so appreciate for your help in advance. Thank you.

[AndreasF]

Hi.

Which DK do you have?

I would recommend that if you're new to Nordic products and development, you should take a look at the guide for developing in Keil here.

Best regards,

Andreas

[KYUBEEN]

Hi, Im using nRF52DK.

I followed the guide you gave to me. I found everything is fine but the last test part with my phone bring a problem like before. The Device Name is not Nordic_UART and I cannot connect to it.

In specific, If I try to connect to another name starting from NORDIC, the LED1 stop blinking like it is connected but its still connecting in my phone forever.

I think the other device name from Nordic is from other example what I did before. And... My iphone itself cant find the bluetooth signal, so I think there must be some problem in ble function.

Hope u have solution for this problem

BTW thank you for replying.

Best regards,

Kyubeen

[AndreasF]

Hi.

If you have a nRF52 DK you should not use SDK 12.2, you should use SDK 15.3, please upgrade to that.

Best regards,

Andreas

[KYUBEEN]

Hi,

I did it at the very first time of course. It was worked first, but not now.

Thank your tho

Best regards,

Kyubeen

[AndreasF]

Hi.

Which example are you looking at, can you please link the path?

What worked the first time?

What is not working now?

Best regards,

Andreas