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rtos - softdevice with nrf51422

bubune

Hi Support team,

I've ported succesfully chibios RTOS on the nrf51422 for month. I've also ported some drivers like I2C - UART - SPI- GPIOS and others... I can play with it make some apps that running perfectly.

Now I've started to integrate the softdevice but I get problems. In the main, first thing is done is to enable the softdevice.

sd_softdevice_enable(NRF_CLOCK_LFCLKSRC_XTAL_50_PPM, softdevice_assert_callback);

But soon I call this function I get hardfault handler.

I made special attention about Ram/Flash usage and other recommandations. Chip is working well as I run sucessfuly the Hrm example.

Can you list all things that I need to check that can cause this issue?

Regards, Bruno

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  • 0 in reply to Vidar Berg

    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

  • 0 in reply to Vidar Berg

    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.

  • 0 in reply to Vidar Berg

    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

  • 0 in reply to Vidar Berg

    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.

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