nrf51822 not advertising

RE: nrf51822 not advertising

Sigurd — Tue, 02 May 2017 09:01:39 GMT

Great that it finally worked! I was not able to open the schematics to check if the module uses external crystal or not. But, I see that the RIOT OS board-files configures the module to use the internal RC oscillator.

RE: nrf51822 not advertising

normanfust — Sat, 29 Apr 2017 07:31:06 GMT

Well I used those values and magic! It works. Thanks so much for your assistance, but I still don't know why it doesn't work with the external crystal. It is supposed to be the standard 32kHz as I was informed by the vendor of the module.

RE: nrf51822 not advertising

Sigurd — Fri, 28 Apr 2017 13:05:05 GMT

Where did you get 0x20001870 from ?

Try IRAM base 0x20001fe8, and size 0x2018

If that doesen't work, try to switch to NRF_CLOCK_LF_SRC_RC. in ble_stack_init() function:

nrf_clock_lf_cfg_t clock_lf_cfg = NRF_CLOCK_LFCLKSRC;

clock_lf_cfg.source = NRF_CLOCK_LF_SRC_RC;
clock_lf_cfg.rc_ctiv=16;
clock_lf_cfg.rc_temp_ctiv=1;
clock_lf_cfg.xtal_accuracy=0;

// Initialize the SoftDevice handler module.
SOFTDEVICE_HANDLER_INIT(&clock_lf_cfg, NULL);

RE: nrf51822 not advertising

normanfust — Thu, 27 Apr 2017 20:44:36 GMT

@Sigurd I tried to use `IRAM base - 0x20001870 IRAM size(16 kB RAM) - 0x2790

IROM base - 0x1B000 IROM size(256 kB Flash) - 0x25000`

Doesn't still advertise.

RE: nrf51822 not advertising

Sigurd — Thu, 27 Apr 2017 13:03:24 GMT

I see that this is a QFAA version with 16kB RAM. Have you adjusted the RAM settings for this?

RE: nrf51822 not advertising

Sigurd — Thu, 27 Apr 2017 12:58:02 GMT

The Xtal target should be the CPU speed, and the nRF51 is running at 16 MHz, so you should not change that. What kind of programmer are you using? Are you able to debug? Here is a post on how to debug the application in Keil.

RE: nrf51822 not advertising

normanfust — Wed, 26 Apr 2017 15:45:41 GMT

Well, according to the layout found here there is an oscillator. I am using 12.2.0. Never worked. I tried to set the oscillator at 32 MHz even in target options but still no luck.

RE: nrf51822 not advertising

Sigurd — Wed, 26 Apr 2017 11:17:32 GMT

Hi,

Did it work before you changed the APP_ADV_INTERVAL and APP_ADV_TIMEOUT_IN_SECONDS ? Note that the Minimum Advertising interval is 20ms. (i.e. APP_ADV_INTERVAL 32, since adv. interval is in units of 0.625 ms).

What SDK are you using? Is this custom board? Do you have an external 32 kHz crystal on your board?