Central connect to custom peripheral of heart rate device issue

[Ben]

Hi Sir/ Miss:

I've a custom peripheral heart rate device.

I use central example "ble_app_hrs_c" to connect it by PCA10040.

After I set up the service (Target_UUID) and characteristic UUID  for custom device.

The central still can' discovery it (Can't enter to "ble_hrs_on_db_disc_evt" function).

Here is MCP information of custom peripheral heart rate device.

PrimaryService UUID is 0xFFF0, characteristic is 0xFFF3, 0xFFF4 and 0xFFF5.

 

How do I set up it?

Thank you.

[FormerMember]

If you run the central chip in debug mode, what happens in find_adv_uuid(..) when using the custom UUID? 

If you want to use a custom service, I would recommend you to take a look at the UART central/peripheral example. That example shows how to use custom service.

[Ben]

I've set up breakpoints on case BLE_GAP_EVT_ADV_REPORT and find_adv_uuid.

But, program doesn't enter to this function.

I checked it that ran into BLE_GAP_EVT_TIMEOUT.

I used SDK 12.3 version.

OK, I'll try it by UART example.

Thank you.

[Ben]

Hi Kristin:

The NUS_BASE_UUID is 128 bit. But, my peripheral device is 16 bit UUID.

How do I set up the NUS_BASE_UUID?

Thank you.

[FormerMember]

For how to add a custom UUID, like the UUID in the UART example you can have a look at the following:

• This post explains well and refers to nAN-36.
• This post does also explain well (old, but the principle is still the same)
• This tutorial, section "Our first service"