Programming the nRF51822 beacon kit.

[alidaf]

I am struggling to find a starting point to be able to program the beacons. I'm completely new to this but want to be able to change the tx power so that they are only visible within a meter of the receiver. Failing that, increase the power so that I can more effectively calculate the distance from the tx power and rssi.

I have 6 nRF51822 beacons and an nRF51-dk. I also have a spring loaded lead that connects a beacon to the DK but it is ridiculous trying to keep contact with all of the pins.

I have downloaded Keil and nRFgo Studio and installed nRF Beacon and nRF Toolbox on my phone. I have installed the firmware package.

But now what? How and where do I even start? Surely this should be a case of modifying something in the firmware but which file? How do I compile? The extreme amount of often conflicting information is giving me cognitive dissonance.

[Joakim Jakobsen]

Hi alidaf!

There is a blog-post about programming the nRF51822 beacon kit using the nRF51 DK.

You can change the radio's transmit power by using the sd_ble_gap_tx_power_set() function.

You can change the tx power in your main.c file. I would change it about the same time as the advertising is started. If you reduce the tx power after a connection is established, the device might not be able to maintain the connection.

In keil, you can compile your code by pressing this button:

Or by pressing F7.

Once compiled, you use nRFGo Studio to program the application and the softdevice.

Let me know if you have any more questions.
Best regards,
Joakim.