nRF52 DK P0.30 to ground?

Question

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

tesc · Accepted Answer

Hi, 
 When using Master Control Panel on a PC you will need a "connectivity device" (DK or dongle) connected to the PC to provide BLE capabilities for MCP. "Supported hardware" in the MCP help files is for what hardware is supported as a "connectivity device". MCP (both for pc and smartphone app) can be used to communicate with any BLE device in the other end. 
 The "connect P0.30 to GND" is only for the connectivity device, and only if it is an nRF51 DK. This is because of an issue when using the connectivity software on the nRF51 DK. 
 We do have a new tool similar to MCP which is for both GNU/Linux, OSX and Windows. Currently it is in development, you can read about it as well as download the current version from the New Bluetooth Smart tool from Nordic blogpost. Do note that just as for MCP you will need a connectivity device. 
 I recommend that you have a look at our newest SDK, which can be downloaded from developer.nordicsemi.com . The latest version at the time of writing is SDK 11, which is for both nRF51 and nRF52. See the introduction and the getting started guide on our infocenter. 
 Regards, Terje

nRF52 DK P0.30 to ground?

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