nRF52 DK P0.30 to ground?

[Jean]

Hi,

I cannot find my nRF52 (PCA100040 / SD132) when scanning for devices from my nRF Master Control Panel on my Android Phone.

In these two posts (post1 and post2), people mention that connecting P0.30 to ground is necessary in order to see the nRF51 DK board when scanning. [EDIT] I just found this post which seems to indicate that the connection to ground is only specific to Master Control Panel. Unfortunately my MCP (v4.0.5) does not seem to have a Help > Supported Hardware section and I cannot check for more information there.

I have a few questions :

• is this P0.30 to ground connection only necessary for MCP or also for any other BLE scanner?

• I cannot see the Help > Supported Hardware section on my MCP app (Android phone). Is this information provided somewhere else (eg in the infocenter site or in the nRF51 Series Ref. Manual)?

• do we also need to connect nRF52 DK's GPIO pin 30 to ground?

Thanks

[Javier]

Hi jean.

Only is necessary when you use MCP in a pc, for mobile device isn´t necessary.

I have just tried it and my mobile device detects my board. If your mobile device doesn´t detect it, maybe is because after 3 minutes, your board doesn´t send more advertise, with what example are you testing MCP? or if you are using your own code, try to use an example.

If you want to see how works mcp, you can find information on your mobile device in:

• options > settings > (section "About") > tutorial
• options > settings > (section "About") > question&answer

Hope this can help you.

Javier.

[Jean]

Thanks Javier. I'd love to use MCP from my computer but unfortunately it does not seem that it has been ported to Linux yet. I was trying to get this code running. I was able to modify for my nRF52 PCA10040 and compile and flash it, but then I am unable to detect any signal with the MCP Android app. That's where I am at right now. I will try to find another basic nRF52 BLE advertizing code example and try again. Thanks for your help.

[Javier]

Try with some simple example, maybe "ble_app_uart".