Quantity of services BLE RAK11720 RUI3

RUI
1

Hello.

I would like to know how many BLE services can be created with the RUI3 API. I currently need to implement two services with their respective features.

I have implemented one service with its features and it works fine, but when I try to create a second service, the program compiles and loads, but when I connect via BLE, it doesn’t display the services and disconnects the RAK11720. The application gets stuck on “connected.”

My questions are:

  1. How many BLE services can I create simultaneously on a RAK11720?

  2. What is the maximum number of features per service on the RAK11720?

  3. I am also evaluating the RAK11160. Is it possible that this microcontroller supports more BLE services?

I look forward to your comments.

Best regards.

2

RUI3 supports only one custom BLE service.

The RAK11160 is using the ESP32-C2 with Espressifs AT command firmware for WiFi and BLE. Best is to check the Espressif documentation for BLE support ==> AT Command Set - ESP32 - — ESP-AT User Guide latest documentation

3

Hi Begee, thanks for replying.

I was able to modify the uhal_cus.h file and increase the number of features per service, which was previously limited to 7.

It’s precisely in these definitions.

I modified the number of services, but it’s not working the same way.

Is there any way to modify uhal_cus.c so that RUI3 can support more than one service?

Best regards.

/*****************************************************************************
#define CUS_SERVICE_START_HDL 0x0600 // This is important!!!

#define MAXIMUM_CUS_SERVICE_SIZE 3
#define MAXIMUM_CUS_CHARACTERISTIC_SIZE 10 //MAXIMUM NUMBER OF FEATURES TO TEST

4

@sercan
Can you help?

1 Like
5

Hello @and-tecnipak

I will take a look and inform you.

Thanks,
Sercan.

6

Hello @and-tecnipak,

Please take a look attached zip. I added multi service support. Please take a look main.cpp file to learn how to use it.

cus.zip (7.1 KB)

Please be aware that these additions can cause problems. Testing is your responsibility.

Thanks,
Sercan.

7

Hello Sercan.

Thank you very much for your technical support. I will be testing this new functionality.

On another note, do you plan to add this support for future versions of RUI3? And also for RAK11160?

Best regards.

8

Thanks @and-tecnipak. I will inform R&D team to add it to future versions of RUI3. I cannot talk about the schedule. Also, I cannot talk for RAK11160. For RAK11160, please take a look the link shared by Bernd.

Best regards.

9

For RAK11160, the ESP32-C2 is running the original Espressif AT command firmware. It supports EITHER WiFi OR BLE, depending on the Espressif firmware used, check AT Command Set - ESP32 - — ESP-AT User Guide latest documentation as I shared before. You will have to flash the Espressif firmware you want to use.

Regarding number of BLE services that the Espressif AT command BLE firmware supports, I do not know. By default we ship the RAK11160 with the Espressif AT command WiFi firmware.