How to send the data from central to peripheral

RE: How to send the data from central to peripheral

chandana k v — Sat, 28 Sep 2019 04:41:00 GMT

Thanks for the reply.I will try

RE: How to send the data from central to peripheral

Vidar Berg — Thu, 26 Sep 2019 09:01:29 GMT

You can use the nRF connect app android or iOS to inspect the advertisement packet from your peripheral. For instance, check if it includes any UUIDs that you can filter on. When you have done this you can configure the Scanning Module to filter on one or more of its parameters. It is possible to only filter on the device name for instance.

However, this will only let you find the correct device to connect to, you still to implement a GATT client to access the various characteristics on your server. You may use UART client as a starting point and adapt it to the services you have on the peripheral.

RE: How to send the data from central to peripheral

chandana k v — Sat, 21 Sep 2019 05:05:14 GMT

Thanks for the reply.

But here in the NUS service we need to mention the base UUID, service UUID,TX characterstic UUID ,Rx characterstic UUId. I don't know the UUID of the other Bluetooth.i searched in the google but i didn't get it.

Is there any method to transfer the data .I am not getting the idea plz help me

RE: How to send the data from central to peripheral

awneil — Fri, 20 Sep 2019 10:16:03 GMT

[quote userid="78173" url="~/f/nordic-q-a/52351/how-to-send-the-data-from-central-to-peripheral/210882"]I can't use Nordic UART client/server service bcoz the server side i am using other bluetooth controller[/quote]

That's not true.

The whole point of standards like BLE is that they are not bound to specific hardware.

The whole point of GATT is that any compliant BLE device can discover the Services & Characteristics on any other compliant BLE device - irrespective of whether they are from different manufacturers.

https://devzone.nordicsemi.com/f/nordic-q-a/51786/how-to-connect-from-one-bluetooth-to-other-bluetooth-devices/208161#208161

https://devzone.nordicsemi.com/f/nordic-q-a/52165/not-able-to-connect-the-bluetooth-to-other-device

The NUS documentation describes the Service & the Characteristics it uses:

https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk5.v15.3.0/ble_sdk_app_nus_eval.html

RE: How to send the data from central to peripheral

chandana k v — Fri, 20 Sep 2019 09:38:43 GMT

Can you plz tell me how to send the data through ble_lbs_led_status_send() function. Bcoz in this function the led status is there .Then my question is how do i send the data through this function.

I can't use Nordic UART client/server service bcoz the server side i am using other bluetooth controller i don't know how to connect the bluetooth through the NUS service. Can you plz tell me how to send the data

RE: How to send the data from central to peripheral

Vidar Berg — Fri, 20 Sep 2019 06:15:54 GMT

Hi,

You need to include the Nordic UART client/server on both sides if you're going to use ble_nus_c_string_send() function, and then it would be better to use ble_app_uart as a starting point instead of blinky. You can use ble_lbs_led_status_send() to send data with the blinky example.