How to Load SoftDevice to Custom nRF52 Board

RE: How to Load SoftDevice to Custom nRF52 Board

Stian Røed Hafskjold — Tue, 04 Jul 2017 08:13:45 GMT

First make sure that the two boards have common ground, so you need a cable for GND (GND_DETECT). Then you need to power the custom board to around 3-3.5V, and use the VTG pin to sense the voltage. And you need to connect the SWDIO and SWDCLK for the SWD interface. You can have a look at the picture in this post (they are using the P20 header, but you can use the P19 header as well): devzone.nordicsemi.com/.../

RE: How to Load SoftDevice to Custom nRF52 Board

jdelapena — Thu, 29 Jun 2017 08:33:56 GMT

I have used Arduino uno to get 3.3V and fed it on my custom board. Now, I already have 3.3V on my custom. What should be the connections between my nRF52-DK and my custom board? Thanks

RE: How to Load SoftDevice to Custom nRF52 Board

nar0909 — Thu, 29 Jun 2017 04:21:46 GMT

yes RK is right it needs to be between 3.0-3.5 volts to be able to power up the debug process. Have u tried externally powering ur module to 3.3v?? If ur using the arm-gcc cmd u can trigger the voltage by using mon tpwr enable that will give 3.3V to ur debug end. Hope this helps Cheers Nar

RE: How to Load SoftDevice to Custom nRF52 Board

RK — Thu, 29 Jun 2017 03:57:05 GMT

1.8V is too low. Is that the voltage on your custom board? Despite the comment that Stian makes that 1.8V worked in one case, many more people have reported that it doesn't. Can you power your custom board to to 3.0V or 3.3V without damaging it?