I have a development board and load the client central BLE blinky to it, then the peripheral BLE blinky to my custom board and power up and the central development board stays LED 1 on and never switches to LED 2.

RE: I have a development board and load the client central BLE blinky to it, then the peripheral BLE blinky to my custom board and power up and the central development board stays LED 1 on and never switches to LED 2.

americanhoney — Fri, 14 Jun 2019 14:33:55 GMT

I didnt have to change generic LFCK usage

Thank you very much for the help.

RE: I have a development board and load the client central BLE blinky to it, then the peripheral BLE blinky to my custom board and power up and the central development board stays LED 1 on and never switches to LED 2.

Kenneth — Wed, 12 Jun 2019 14:33:27 GMT

To change BLE clock source you should edit sdk_config.h, for instance

#define NRF_SDH_CLOCK_LF_SRC 0
#define NRF_SDH_CLOCK_LF_RC_CTIV 16
#define NRF_SDH_CLOCK_LF_RC_TEMP_CTIV 2
#define NRF_SDH_CLOCK_LF_ACCURACY 1

You may also need to edit generic LFCK usage:

#define NRFX_CLOCK_CONFIG_LF_SRC 0
#define CLOCK_CONFIG_LF_SRC 0

Please also comment on my other questions/comments:

- Results of DTM tests.

- Pulled up UART RXD line with external pull-up.

- Did anyone from Nordic review your custom board (schematic and layout)?

RE: I have a development board and load the client central BLE blinky to it, then the peripheral BLE blinky to my custom board and power up and the central development board stays LED 1 on and never switches to LED 2.

americanhoney — Tue, 11 Jun 2019 19:44:25 GMT

even added:

NRF_CLOCK->TASKS_LFCLKSTART=0;
NRF_CLOCK->TASKS_LFCLKSTOP=1;
NRF_CLOCK->LFCLKSRC=0;
NRF_CLOCK->TASKS_LFCLKSTOP=0;
NRF_CLOCK->TASKS_LFCLKSTART=1;
while(!NRF_CLOCK->EVENTS_LFCLKSTARTED);

didnt work either

RE: I have a development board and load the client central BLE blinky to it, then the peripheral BLE blinky to my custom board and power up and the central development board stays LED 1 on and never switches to LED 2.

americanhoney — Tue, 11 Jun 2019 19:39:01 GMT

I put

NRF_CLOCK->LFCLKSRC=0;

as the first line in the main program. didnt fix the problem though

RE: I have a development board and load the client central BLE blinky to it, then the peripheral BLE blinky to my custom board and power up and the central development board stays LED 1 on and never switches to LED 2.

americanhoney — Tue, 11 Jun 2019 19:26:03 GMT

RE: I have a development board and load the client central BLE blinky to it, then the peripheral BLE blinky to my custom board and power up and the central development board stays LED 1 on and never switches to LED 2.

Kenneth — Tue, 11 Jun 2019 19:25:42 GMT

Any update on the issue?

Best regards,

Kenneth

RE: I have a development board and load the client central BLE blinky to it, then the peripheral BLE blinky to my custom board and power up and the central development board stays LED 1 on and never switches to LED 2.

Kenneth — Mon, 10 Jun 2019 16:45:35 GMT

Did anyone from Nordic review your custom board (schematic and layout)?

RE: I have a development board and load the client central BLE blinky to it, then the peripheral BLE blinky to my custom board and power up and the central development board stays LED 1 on and never switches to LED 2.

Kenneth — Mon, 10 Jun 2019 16:40:01 GMT

I suggest to run DTM to test/verify your hardware, e.g.:
https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk5.v15.3.0/ble_sdk_app_dtm_serial.html?cp=5_1_4_5

This application note may be useful on how to setup DTM:
https://infocenter.nordicsemi.com/topic/struct_appnotes/struct/appnotes_nan34.html?cp=11_3

A side question: The examples may be logging over UART, so make sure for instance that RXD pin is pulled high. Otherwise I think most of the pins are simple button/led for the blinky example at least.

RE: I have a development board and load the client central BLE blinky to it, then the peripheral BLE blinky to my custom board and power up and the central development board stays LED 1 on and never switches to LED 2.

americanhoney — Mon, 10 Jun 2019 16:34:32 GMT

i have a 32G Hz external clock. i will try changing it to internal.

and I do have a setup that works with 2 DK boards. READ THE COMMENTS!!

RE: I have a development board and load the client central BLE blinky to it, then the peripheral BLE blinky to my custom board and power up and the central development board stays LED 1 on and never switches to LED 2.

Kenneth — Mon, 10 Jun 2019 16:30:42 GMT

I added some additional comments to previous replies, please have in mind that based on your case description the problem may be anything, and until you have a setup that you do know works (e.g. 2pcs of nRF52-DK) it is difficult to narrow down to what the problem may be.

RE: I have a development board and load the client central BLE blinky to it, then the peripheral BLE blinky to my custom board and power up and the central development board stays LED 1 on and never switches to LED 2.

Kenneth — Mon, 10 Jun 2019 16:22:42 GMT

So I assume that if you were using 2pcs of nRF52-DK then the examples (blinky or otherwise) works as intended. I would not say that is clear from your description.

If you have found that the problem is in specific related to your own hardware, then ideally the next step I suggest is:

1. Check if you hardware have placed an external 32kHz crystal, if not, you will need to change the LFCLK source to RC (internal) instead of XTAL (external) when init the softdevice.

2. Once that is in place, check if the custom hardware is visible as a BLE beacon:
https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk5.v15.3.0/ble_sdk_app_beacon.html

RE: I have a development board and load the client central BLE blinky to it, then the peripheral BLE blinky to my custom board and power up and the central development board stays LED 1 on and never switches to LED 2.

americanhoney — Mon, 10 Jun 2019 16:16:48 GMT

the youtube video showing me how to get segger software and build and program?????????? i am way way past that point.

and no, not 2 DKs . it is apparent you are not reading the details at all.

PLEASE ASSIGN A DIFFERENT TECH SUPPORT REP TO THIS QUESTION!!!!!!!!!

RE: I have a development board and load the client central BLE blinky to it, then the peripheral BLE blinky to my custom board and power up and the central development board stays LED 1 on and never switches to LED 2.

americanhoney — Mon, 10 Jun 2019 16:13:32 GMT

a week later and the reply is that you see a similar thread and assume everything is working so why do I keep asking?????????????????????????? the other thread is about downloading the softdevice and yes, i finally figured out how to do that. this thread however is related to BLINKY.

and then your comment with the link to the BLE Central programs???????? i think you are attempting to say "i told you so" but how many of them are named blinky, just one. PLEASE ASSIGN A DIFFERENT TECH SUPPORT REP TO THIS QUESTION!!!!!!!!!

RE: I have a development board and load the client central BLE blinky to it, then the peripheral BLE blinky to my custom board and power up and the central development board stays LED 1 on and never switches to LED 2.

Kenneth — Mon, 10 Jun 2019 16:08:53 GMT

It seems from this thread you have already something working now:
https://devzone.nordicsemi.com/f/nordic-q-a/48117/program-softdevice

Regarding this comment, please check out the link below the comment:

[quote user="americanhoney"]additionally there only 1 single central BLE example in nRF5_SDK_15.3.0_59ac345[/quote]

https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk5.v15.3.0/examples_ble_central.html?cp=5_1_4_2_0

Also, the following link may be helpful getting started (note the web page in the beginning of the tutorial have changed, but the content itself when working with the SDK is still valid):

https://www.youtube.com/watch?v=YZouRE_Ol8g&list=PLx_tBuQ_KSqGHmzdEL2GWEOeix-S5rgTV

I assume you have first verified working 2pcs of Nordic nRF52-DK here, since that will help getting things setup according the the descriptions in the examples projects for a central and peripheral.

Best regards,
Kenneth

RE: I have a development board and load the client central BLE blinky to it, then the peripheral BLE blinky to my custom board and power up and the central development board stays LED 1 on and never switches to LED 2.

americanhoney — Thu, 06 Jun 2019 15:20:41 GMT

I even have a sample of my custom board that is loaded with a program like ble_app_att_mtu_throughput but adapted to work on my board instead of the development kit. it communicates BLE to the tester (custom board setup as sender) just fine. I connect it to Jflash, read entire chip, then program a different sample of my custom board and it doesnt communicate BLE to the tester.

RE: I have a development board and load the client central BLE blinky to it, then the peripheral BLE blinky to my custom board and power up and the central development board stays LED 1 on and never switches to LED 2.

americanhoney — Wed, 05 Jun 2019 14:34:20 GMT

I see absolutely nothing there that addresses or can help with this situation so the RTFM reply doesnt help. additionally there only 1 single central BLE example in nRF5_SDK_15.3.0_59ac345 so the comment 'depending on the example you are using' is also not helpful. lastly LED1 means not partnered, LED 2 means partnered (as explained by Nordic <aka you>)

https://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.sdk5.v15.3.0%2Findex.html

RE: I have a development board and load the client central BLE blinky to it, then the peripheral BLE blinky to my custom board and power up and the central development board stays LED 1 on and never switches to LED 2.

Kenneth — Wed, 05 Jun 2019 11:43:38 GMT

Hi,

Make sure you have followed the getting started:

https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk5.v15.3.0/nrf51_getting_started.html?cp=5_1_1

Depending on the example you are using, the LED1 and LED2 may have different meaning. Please refer to the central and peripheral example you are using on what they mean.

Kenneth