Flashing nrf51422 through SWD interface

RE: Flashing nrf51422 through SWD interface

harryB — Sun, 13 Mar 2016 21:29:07 GMT

Hi There, I am stuck at the same point where I can access the AP and DP registers of the nRF51822 but I can't talk to flash. Could you please help me with the next steps? I browsed the McHck Project mentioned above but couldn't find the correct information. Could you please point it to me ?

RE: Flashing nrf51422 through SWD interface

Vebjørn — Wed, 04 Feb 2015 10:11:24 GMT

The link applies to the nRF51xx series, yes. I was not aware of the other link you posted, good find! I am glad you were able to fix it.

RE: Flashing nrf51422 through SWD interface

Vito — Wed, 28 Jan 2015 16:30:34 GMT

Your second link refers to a "CoreSight™ PTM™-A9", does it apply also to nRF51xx which are Cortex-M0? However, I have found useful information in the source of the McHck project. Following the steps in their code and partially using commands from the EFM32 posted above I programmed the flash memory succesfully.

RE: Flashing nrf51422 through SWD interface

Vebjørn — Wed, 28 Jan 2015 15:18:57 GMT

I see. The only Nordic-specific information should be listed in the manual, regarding the enter-debug-procedure. I'm assuming you are familiar with CMSIS-DAP in which case you can read more about the Debug Port registers here: http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.ddi0401a/index.html. I will try looking into it further for a more clear answer.

RE: Flashing nrf51422 through SWD interface

Vito — Wed, 21 Jan 2015 15:09:49 GMT

I think you mean the equivalent of chapter 10 in rev. 2.1? I have read that, with that I can put the CPU in debug mode. Please see my updated question, thanks!

RE: Flashing nrf51422 through SWD interface

Vebjørn — Wed, 21 Jan 2015 14:40:12 GMT

This is explained in chapter 11 in the nrf51 Reference Manual. What parameter is it that you need?