nrf51822 not advertising

[normanfust]

Hello, I am using an nrf51822 but have no success in advertising. I tried so far to load the ble_app_template from the peripheral examples where I' ve only changed

 #define APP_ADV_INTERVAL                10
 #define APP_ADV_TIMEOUT_IN_SECONDS      0

I tried to load another example, but still no success. I tried to change crystal's accuracy to 20 PPM or 250PPM still nothing, switched crystal to internal RC nothing.

I should pinpoint that nrfGo studio crashes so I flashed s130 via nrfprog, which according to the following output seems to work.

nrfjprog  --verify s130_nrf51_2.0.1_softdevice.hex
Parsing hex file.
Verifying programming.
Verified OK.

What else can I do to get it running? Please help me :)

[Sigurd]

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).

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

[normanfust]

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.

[Sigurd]

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.

[Sigurd]

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

[normanfust]

@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.