BLE as Peripheral

RE: BLE as Peripheral

awneil — Thu, 17 Sep 2020 10:34:15 GMT

So it is working now, then?

Please mark the solution, and start a separate thread for the new question.

RE: BLE as Peripheral

Muqarrab — Thu, 17 Sep 2020 10:29:59 GMT

@awneil
Any solution for device name issue?

RE: BLE as Peripheral

awneil — Wed, 16 Sep 2020 15:39:25 GMT

That's not solving the problem - that's just masking the symptoms!

As noted earlier, you were ending up in the Fatal Error handler; ie, the APP_ERROR_CHECK that you've commented out was detecting an error.

Don't just ignore this error: find out what error it is, why it's happening - and fix it!

RE: BLE as Peripheral

Muqarrab — Wed, 16 Sep 2020 12:01:50 GMT

The connection Problem Has been solved by commenting this:

case BLE_GAP_EVT_CONNECTED:
NRF_LOG_INFO("Connected.");
err_code = bsp_indication_set(BSP_INDICATE_CONNECTED);
APP_ERROR_CHECK(err_code);
m_conn_handle = p_ble_evt->evt.gap_evt.conn_handle;
err_code = nrf_ble_qwr_conn_handle_assign(&m_qwr, m_conn_handle);
// APP_ERROR_CHECK(err_code);
break;

RE: BLE as Peripheral

Muqarrab — Wed, 16 Sep 2020 10:34:52 GMT

Also, I have set device name as follow but BLE is advertising only with first 4 chars.

#define DEVICE_NAME "Nordic_Template" /**< Name of device. Will be included in the advertising data. */

The BLE advertising name is showing "Nord".

RE: BLE as Peripheral

Muqarrab — Wed, 16 Sep 2020 10:21:37 GMT

Hi awneil

<info> app_timer: RTC: initialized.
<info> app: Template example started.
<info> app: Fast advertising.
<info> app: Connected.
<error> app: ERROR 8 [NRF_ERROR_INVALID_STATE] at C:\Nordic\SDK\nRF5SDK17009d13099\nRF5_SDK_17.0.0_9d13099\examples\ble_peripheral\custom_ble_service_example\main.c:482
PC at: 0x0003298B
<error> app: End of error report

Any suggestions for this?
Thanks!

RE: BLE as Peripheral

awneil — Wed, 16 Sep 2020 09:10:20 GMT

logs come out either via RTT - which requires a Segger J-Link (the one on a DevKit will do) - or via the UART

RE: BLE as Peripheral

Muqarrab — Wed, 16 Sep 2020 08:55:33 GMT

Hi awneil

I have enabled debug logs but can't see anything there.
Then I changed the following value in sdk_config.h and able to see logs in the Debug terminal.

NRF_FPRINTF_FLAG_AUTOMATIC_CR_ON_LF_ENABLED 0

Here is the error list.

I have changed the values "Project -> Options" as follow

RAM_START=0x20002270

Now, LED1 has started blinking and BLE also started advertising.
But when I am trying to connect it's immediately disconnected.
I have attached the Segger+nRF Connect logs.

Any solution for this, please?

RE: BLE as Peripheral

awneil — Tue, 15 Sep 2020 17:38:08 GMT

That means you've had a Fatal Error - so you need to step back a bit to see what caused that error.

If you enable debug logs, they should give you more info ...

RE: BLE as Peripheral

Muqarrab — Tue, 15 Sep 2020 15:04:26 GMT

I am debugging the code and I think it stuck here.

Can you please check and give a solution. Thanks

RE: BLE as Peripheral

awneil — Tue, 15 Sep 2020 13:19:28 GMT

[quote userid="67200" url="~/f/nordic-q-a/65832/ble-as-peripheral/269659"]Can you please suggest any solution[/quote]

You really need to use the debugger to see what is going on!

RE: BLE as Peripheral

Muqarrab — Tue, 15 Sep 2020 12:37:16 GMT

Hi,
1-I have successfully programmed the s140_nrf52_7.0.1_softdevice.hex.

2-Now when I Build and Run the ble_app_template project LED1 starts blinking But when I Build and Run my modified project LED1 not start blinking and the device is also not advertising.

Can you please suggest any solution?

Thanks!

RE: BLE as Peripheral

Muqarrab — Tue, 15 Sep 2020 10:07:55 GMT

Hi awneil

[quote userid="6462" url="~/f/nordic-q-a/65832/ble-as-peripheral/269390"]Do you have any experience with development on any other microcontroller(s) ?[/quote]

Sorry I got wrong. I have SoftDevice BLE stack(nRF5SDK17009d13099).
I have made this project
(C:\Nordic\SDK\nRF5SDK17009d13099\nRF5_SDK_17.0.0_9d13099\examples\ble_peripheral\cu
stom_ble_service_example)
and followed the steps in given link.
But now facing the above-mentioned issue.

[quote userid="6462" url="~/f/nordic-q-a/65832/ble-as-peripheral/269390"]Do you have any experience with development on any other microcontroller(s) ?[/quote]

Yes. I have already worked on cc2541 SoC. In their stack, there is a peripheral example having already services so I just made changes and added new characteristics for mobile app communication.

RE: BLE as Peripheral

awneil — Mon, 14 Sep 2020 13:16:59 GMT

[quote userid="67200" url="~/f/nordic-q-a/65832/ble-as-peripheral/269380"]I didn't program the SoftDevice.(Can you please explain?)[/quote]

The SoftDevice is the BLE stack - so you can't do anything with BLE without the SoftDevice!

I think you need to go back to the Beginner's Getting Started tutorials

https://devzone.nordicsemi.com/nordic/short-range-guides/b/getting-started/posts/introduction-to-nordic-nrf5-sdk-and-softdevice

https://devzone.nordicsemi.com/nordic/short-range-guides/b/getting-started/posts/introduction-to-bluetooth-low-energy-and-ble-devel

infocenter.nordicsemi.com/.../nrf5gs.html

https://devzone.nordicsemi.com/f/nordic-q-a/30338/getting-started-for-beginners

[quote userid="67200" url="~/f/nordic-q-a/65832/ble-as-peripheral/269380"]I have newly started development on nRF52840[/quote]

Do you have any experience with development on any other microcontroller(s) ?

Do you have any experience with software development in general ?

I would certainly not recommend the nRF52 - or, in fact, any other similar advanced wireless SoC - as a starting point for anyone without some solid embedded microcontroller experience ...

RE: BLE as Peripheral

Muqarrab — Mon, 14 Sep 2020 13:03:49 GMT

Hi,

-No, I didn't program the SoftDevice.(Can you please explain?)

-No how can I check?(Can you please explain?)

I have newly started development on nRF52840.

RE: BLE as Peripheral

awneil — Mon, 14 Sep 2020 11:31:31 GMT

Did you remember to program the SoftDevice?

Have you used the debugger to see what's happening?

RE: BLE as Peripheral

Muqarrab — Fri, 11 Sep 2020 15:32:18 GMT

Thanks, Martin Lesund,

I have followed the given link. At this point

"That should be it, compile the ble_app_template project, flash the S132 v6.0.0 SoftDevice and then flash the ble_app_template application. LED1 on your nRF52 DK should now start blinking, indicating that its advertising. Use nRF Connect for Android/iOS to scan for the device and view the content of the advertisement package. If you connect to the device you should see the service listed as an "Unknow Service" since we're using a vendor-specific UUID."

I build and run the project but BLE is not advertising and LED is also not blinking.
I am attaching the files please check where I am making mistake?
Thanks!

devzone.nordicsemi.com/.../0383.ble_5F00_cus.h devzone.nordicsemi.com/.../2425.ble_5F00_cus.c devzone.nordicsemi.com/.../6376511.main.c devzone.nordicsemi.com/.../52611.sdk_5F00_config.h

RE: BLE as Peripheral

Martin Lesund — Fri, 11 Sep 2020 13:29:46 GMT

Hi Muqarrab,
Please see the following tutorial: https://github.com/bjornspockeli/nRF52-Bluetooth-Course

RE: BLE as Peripheral

Muqarrab — Fri, 11 Sep 2020 13:19:29 GMT

Thanks for your suggestion.
Which peripheral example should I start in which I can add more characteristics?And How?

RE: BLE as Peripheral

awneil — Fri, 11 Sep 2020 11:41:55 GMT

SDK - start here:

https://infocenter.nordicsemi.com/topic/struct_sdk/struct/sdk_nrf5_latest.html

BLE Peripheral examples:

https://infocenter.nordicsemi.com/topic/sdk_nrf5_v17.0.0/examples_ble_peripheral.html

Tutorial:

https://devzone.nordicsemi.com/nordic/short-range-guides/b/bluetooth-low-energy/posts/ble-services-a-beginners-tutorial