Hi, I am using the STM32WB55 custom board as a client. My Task is to create a connection with the server when a button is pressed. and send the write attribute command and then disconnect from the server immediately.

[AM.12]

Steps I am following:

1. Scan for the server and get the MAC of the server
2. When the button is pressed call aci_gap_create_connection to start the connection
3. Then write the attribute and disconnect from the server.

Hear the problem I am facing is it takes 3sec to establish a connection and then write an attribute all this process is taking upto 4sec.

I want to reduce connection time to 500ms at least. Since I will be knowing server details already, with this can I reduce this time?

I am trying but I am unable to achieve this.

Can someone help me with this?

Thank you.

[Javier1]

Tell us more about the server, maybe you could speedup that process by making "Connection Interval" in both stm32wb and your server as small as possible (drains more battery)

[AM.12]

Thank you for the response.

The server is developed on the ESP32 platform, Client is a battery-operated device developing on STM32WB55CGU6.

The server will be always advertising. The client will do the one-time scan and get MAC of server to make it ready to start the connection.

When a button is pressed in the client device, the client will start connecting with the server then write the data to the server and then disconnect from server

[Javier1]

>developed on the ESP32 platform

Are you using arduino? maybe its just the time it takes for the esp32 to do its server thing

[AM.12]

I am using espressif for server development.

As I know all the server details like UUID's can I make connection fast with the server instead of getting (reading characteristics) all these details from the server, Can I hardcode it in the client and write attribute data to the server?

[AM.12]

Hi,

I tried with arduino IDE also but it takes same time to create connection around 5sec.

When I connect from the mobile app it is fast(with in 1sec). when I do connection from stm32wb55 client it takes more time