rtos - softdevice with nrf51422

RE: rtos - softdevice with nrf51422

bubune — Tue, 24 Feb 2015 13:13:33 GMT

Hi Paul,

I spent the last few night to work on this issue. I can confirm with new rev of NRF51422 where you can update the softdevice (rev AAE0) , the problem is fixed. Thanks

RE: rtos - softdevice with nrf51422

bubune — Fri, 28 Nov 2014 12:54:51 GMT

Hi Paul, thanks for your reply. Thanks to confirming the bug in the AAC0 rev. I've now the new AAE0 device but I didn't get a chance to test it yet. I hope to make few new tests in the next few days. I'm currently integrating the call to the softdevice in the HAL. Soon my tests will be finish, I will post the status of them here. Regards, Bruno

RE: rtos - softdevice with nrf51422

Paul — Thu, 27 Nov 2014 21:10:46 GMT

NRF51422_AAC0 has a bug in the softdevice causing stack switching problem. I had the same problem with KEIL RTOS. I tracked it all the way to the door of the softdevice. I made a fix by myself for my application by adding some assembly code into KEIL's RTOS source code. And got around this problem for a short production run. Now with the latest SDK and AAEO version, everything is beautiful. Sure I will find more bugs :-D But so far so good.

RE: rtos - softdevice with nrf51422

Vidar Berg — Mon, 06 Oct 2014 10:58:24 GMT

Hi, the bug was listed in the release notes for s110 v.6.0. However, at first I just assumed you were using the BLE stack , so this doesn't apply to your case. Since you are running on a older revision you cannot update the ANT stack which is possible with the new kits. So yes, you'll need a new kit to update the softdevice . I've sent you a PM in regards to this.

RE: rtos - softdevice with nrf51422

bubune — Mon, 06 Oct 2014 09:23:07 GMT

Hi, thanks for you reply. So this bug was not report on PAN document. Yes, I'm using a softdevice version previous to version 6 as on the NRF51422_AAC0 it's impossible to program again the softdevice. It means that I need to buy a new Developpement Kit? Please let me know if it's possible to program again the softdevice on this revesion of the chip (NRF51422_AAC0)

For the HRM exeample, I've already tested this exeample sucessfully with my garmin heart belt.

Thanks, Bruno

RE: rtos - softdevice with nrf51422

Vidar Berg — Mon, 06 Oct 2014 09:05:52 GMT

Hi, are you using a softdevice version previous to s110 version 6? There was unfortunately a bug with the older softdevices that could cause undefined behavior when using the PSP. This was however fixed in the 6.0 release. There's a migration document in the softdevice download folder if you haven't migrated to the latest softdevice already.

Also, see that you mention the HRM ANT+ example, note that you need to have the ANT stack (either s210 or s310) to implement it.

RE: rtos - softdevice with nrf51422

bubune — Mon, 06 Oct 2014 08:12:06 GMT

Hi Vidar, Thanks for you reply. I've already see that. Currently, in the init, I do nothing just activate the softdevice.

The main difference is when I activate the PSP stack. See my comment from the september 26th "Well, after some deep investigations, it means we get an hardfaultt execption soon Softdevice is active when PSP stack is activated before (CONTROL reg =2). Can you confirm this behavior on NRF51422_AAC0 and SDK 4.2.2? Next step, will be activate PSP stack on the HRM ANT+ exeample. I will post later on the result"

Is there any issue about that in this revision of the chip?

Regrads, Bruno

RE: rtos - softdevice with nrf51422

Vidar Berg — Mon, 06 Oct 2014 08:05:08 GMT

Hi, in case you're not aware of it, there are some peripherals that are blocked from the application when the softdevice is enabled. Please see the softdevice doc in chapter 10 for more details.

RE: rtos - softdevice with nrf51422

bubune — Fri, 03 Oct 2014 12:23:27 GMT

Hello, Just an UP :-)!

RE: rtos - softdevice with nrf51422

bubune — Thu, 25 Sep 2014 22:23:36 GMT

Well, after some deep investigations, it means we get an hardfaultt execption soon Softdevice is active when PSP stack is activated before (CONTROL reg =2). Can you confirm this behavior on NRF51422_AAC0 and SDK 4.2.2? Next step, will be activate PSP stack on the HRM ANT+ exeample. I will post later on the result.

Regards, Bruno

RE: rtos - softdevice with nrf51422

bubune — Thu, 25 Sep 2014 09:53:21 GMT

I made some investigations. It seems that enabling the PSP stack before to enable the softdevice make the softdevice get an error.I'm using the NRF51422_AAC0 and the lasest SDK 4.2.2 for this chip. I'm also compiling with GCC. Can nordic team helping on this issue? I've read somewhere on this forum that softdevice 110 can be impacted with MSP/PSP stack. is it possible to get the same issue?

Regards, Bruno