Programm Sniffer Firmware to nRF51822

[Roger314]

Dear Developer Zone

I have searched now a lot in the Internet, mostly the say it's possible to reprogramm the Firmware of the nRF51822. I have such a chip and a JLink Debugger. Is it possible to download the sniffer .hex File via the JLink Debugger in the nRF51822? Which Software can do this? Are there any tutorials or how to's?

Thanks in Advance for Answers!

[MartinBL]

Hi

Yes, that should be possible. You can use nRFgo Studio (found here). Then you can download necessary .hex-files and user guides here and Wireshark here.

[MartinBL]

I'm looking at this picture. It is pretty simple. The nRF51 has a shared nRESET/SWDIO pin as you can see in the Product Specification. So just connect SWDIO to SWDIO and SWDCLK to SWDCLK. Finally you need to connect VTref (aka VTG) on your debugger to Vdd on the MDBT40. This pin is measuring the voltage on your kit to determine if it is present or not. The pin is not meant to power your board. That's it. No need to connect TDI or TDO.