BLE connection issue

RE: BLE connection issue

Kenneth — Mon, 28 Oct 2019 15:50:25 GMT

Hi,

What kind of debugging have you done? E.g. have you tried for instance to run simple application on hardware2 as a ble_app_beacon to verify the hardware2 is working? Have you tried to debug your project to check for any asserts or errors? Have you tried to run DTM tests or similar?

Best regards,
Kenneth

RE: BLE connection issue

SciTER Development Team — Fri, 25 Oct 2019 12:37:30 GMT

Hi, Kenneth

we have two set of hardware of our product, and issue is in BLE connection.

Our code with sdk 12 work with both hardware OK.(for any mobile phone device)

But now we move our code from sdk 12 to sdk15.3 then

With Hardware 1 (BLE connection work with 99% accuracy) and With Hardware 2 (BLE connection issue- No connection can be established with device to phone, tried with many mobile phones).

Our both hardware having FCC module.

If you want, then we can make hardware availability for you to checking this issue.

NOTE: how to make this case as private. please give access for making this case private. if you want any more information then please tell us

Thanks,

Sandip

RE: BLE connection issue

SciTER Development Team — Mon, 17 Jun 2019 03:39:41 GMT

Hi cgamero

No,

I moved my code on SDK 15.3 from SDK 14.2

RE: BLE connection issue

cgamero — Thu, 13 Jun 2019 09:45:12 GMT

Hi Sandip,

Have you solved your issue??

RE: BLE connection issue

Kenneth — Mon, 20 May 2019 09:13:58 GMT

Any way you can create a simplified program I may run on a DK to recreate the problem here?

RE: BLE connection issue

SciTER Development Team — Fri, 17 May 2019 09:52:45 GMT

hi Kenneth,

i have tried with ANT channel closed, then connection ratio improve by 40 to 50% but still issue not resolved.

Thanks,

Sandip

RE: BLE connection issue

Kenneth — Tue, 14 May 2019 13:04:10 GMT

Hi,

Is it possible that you have other on-going activities that may be interfering with the link?

For instance: Can it be that you are using the softdevice to also search or have open an ANT channel, and/or scanning/advertising a second BLE link?

Best regards,
Kenneth

RE: BLE connection issue

Himansu Donga — Tue, 14 May 2019 01:29:55 GMT

Hi Kenneth,

I am using Single hardware for SDK12 and SDK14 Hardware verification.

I have test with 500ppm but got same result.

Please not same crystal setting work witj SDK12 is ok,but not work with SDK14.

Regards,

Himansu Donga

RE: BLE connection issue

Kenneth — Mon, 13 May 2019 12:30:18 GMT

I assume you are using identical hardware here between the two. Then the only explanation I have is that the LFCLK may be on the very edge of tolerance. Please test with 500ppm yes.

Best regards,
Kenneth

RE: BLE connection issue

Himansu Donga — Mon, 13 May 2019 12:19:40 GMT

Can you try to set the LFCLK tolerance to 500ppm for test?

Ans: I will try this parameter and update you.

SDK12:

// Low frequency clock source to be used by the SoftDevice
#define NRF_CLOCK_LFCLKSRC {.source = NRF_CLOCK_LF_SRC_XTAL = External Clock Source, \
.rc_ctiv = 0, \
.rc_temp_ctiv = 0, \
.xtal_accuracy = NRF_CLOCK_LF_XTAL_ACCURACY_20_PPM}

SDK14:

nrf_clock_lf_cfg_t const clock_lf_cfg =
{
.source = NRF_SDH_CLOCK_LF_SRC = External Clock Source,
.rc_ctiv = NRF_SDH_CLOCK_LF_RC_CTIV = 0,
.rc_temp_ctiv = NRF_SDH_CLOCK_LF_RC_TEMP_CTIV = 0,
#ifdef S140
.xtal_accuracy = NRF_SDH_CLOCK_LF_XTAL_ACCURACY
#else
.accuracy = NRF_SDH_CLOCK_LF_XTAL_ACCURACY = NRF_CLOCK_LF_XTAL_ACCURACY_20_PPM
#endif
};

Regards,

Himansu

RE: BLE connection issue

Kenneth — Mon, 13 May 2019 12:14:56 GMT

What parameters have you used for the LFCLK when init the softdevice?

Can you try to set the LFCLK tolerance to 500ppm for test? It may be that the LFCLK is not within configured tolerance.

Best regards,
Kenneth

RE: BLE connection issue

Himansu Donga — Mon, 13 May 2019 11:42:24 GMT

devzone.nordicsemi.com/.../SRAC_5F00_1.pcapng devzone.nordicsemi.com/.../SRAC_5F00_2_5F00_Android.pcapng

Hi Kenneth,

(iOS Log File) File Name: SRAC_1 = start from frame number 369

(Android Log File) File Name: SRAC_2_Android = Start from frame number 521

My issue is this board working Ok with SDK12 Firmware. We have upgrade SDK12 to SDK14 and device connection not complete.

Device advertisement is OK, After Link Layer protocol , services and characteristics discovery failed or take long time.

Environment: We are verifying both firmware same place.

SDK12 Firmware: Link Layer Protocol & Service and Characteristics discovery completed within 2 to 3 second.

SDK14 Firmware: Link Layer Protocol & Service and Characteristics discovery not completed within 7 second.

let me known any query or suggestion.

Regards,

Himansu Donga

RE: BLE connection issue

Kenneth — Mon, 13 May 2019 11:10:23 GMT

Hi,

In general there may be two reasons why the peripheral is not responding to the CONNECT_REQ:

1. The peripheral may be using whitelist, and thereby will not allow anyone not in the whitelist to connect (if whitelist is the reason, then that filter 100% of CONNECT_REQ from other peers).

2. There may be noise in the environment that prevent the CONNECT_REQ to be received due to interference (this may happen <5% of the cases).

Let me know if this may explain what you see. If this doesn't explain your observation, then can you please specify where I should look in your log files (e.g. file name and frame number)?

Best regards,
Keneth

RE: BLE connection issue

Himansu Donga — Mon, 13 May 2019 08:02:11 GMT

devzone.nordicsemi.com/.../FWLogMultiConnectionByPhone1.pcapng

devzone.nordicsemi.com/.../Log8.pcapng

Hi,

This issue also observe in Android Galaxy S10 phone also.

When we use SDK12 Firmware it is working OK. After Upgrading to SDK14 than we face this issue.

SDK: 14

Softdevice: S332 (5.0.0)

Chip Set: nRF52832

Please check attached sniffer log.

Regards,

Himansu Donga