Beginnner BLE Programming Guide for nrf52840 (ble-client)

[Justin Eddard]

Hello Everyone,

I have been using nrf52840 DK for several weeks. However I find it very difficult to understand the source code. I have experience only using arduino programming and it is quiet different with this board.

Could anyone recommend me any ble programming guide for this board?
What I need is simply read and write with ble using nrf52840. And this board act as a ble-client.

Thank You in advance.

[awneil]

Justin Eddard said:

I have experience only using arduino programming and it is quiet different with this board.

So perhaps what you really need is a guide/tutorial on how to move from Arduino to "conventional" embedded 'C' (or C++) programming?

Here are some resources & references for 'C' learning:

http://blog.antronics.co.uk/2011/08/08/so-youre-thinking-of-starting-with-c/

Justin Eddard said:

What I need is simply (sic) read and write with ble

The trouble is, BLE is not simple!

https://devzone.nordicsemi.com/f/nordic-q-a/49811/ses-linker-error/199494#199494 

For specific Nordic 'getting started', see:

https://www.nordicsemi.com/Get-Started

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

but it does assume that you are already a competent embedded 'C' developer

[Hung Bui]

The tutorials here are also worth to have a look: https://devzone.nordicsemi.com/nordic/short-range-guides/b/bluetooth-low-energy

[awneil]

Justin Eddard said:

What I need is simply (sic) read and write with ble

Probably the "simplest" (sic) way is to use the Nordic UART Service (NUS): it gives you a transparent "pipe" through which you can just pass any arbitrary data, much like you do with a UART - hence the name:

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

[Torsten Robitzki]

If you want simple BLE, you might consider Bluetoe: github.com/.../bluetoe

Currently it's not recommended to use it in production, but it's easy to implement GATT Server prototypes with it.