How to create AT server for STM32WB55? Got stuck in UTIL_SEQ_WaitEvt?

[SAhma.5]

Hi!

I want to develop the AT Server for STM32WB55. I am using the custom template where all the BLE setting is already performed and now I want to write code for AT commands. What I do is to receive the command from the COM port and then execute it. E.g. ATDEVICE will give me name with which the WB55 is advertised. I can see all the funtions etc in app_ble.c file.

The problem is when I want to do something in response to the AT command e.g I want to stop advertising and call to function aci_gap_set_non_discoverable so it get stuck in the  hci_cmd_resp_wait function and get stuck in the UTIL_SEQ_WaitEvt. I dont know if these two are relevant to each other. So every time I want to do something like advertise, stop advertise, change mode etc it is not running and get stuck there.

I have also tried the AT server example but is not working.

Any help will be appreciable.

Thanks in advance.

[Remy ISSALYS]

Hello,

The easiest way is to start from BLE_AT_Server example available in STM32CubeWB package. This project implements a set of AT commands used to build GAP/GATT custom server or client, peripheral or central application. The AT instructions are transferred through Cortex®-M4 application microcontroller low-power UART (LPUART, PA2 and PA3) without flow control. You can look the following wiki page which describes the AT Server application.

Best Regards

[SAhma.5]

I have gone through this example several times and when I try to compile and run the code it prompts some errors and I am unable to execute it.

[Bob S]

Looks like a makefile/IDE config issue. Is this a CubeIDE project? That path looks like it is outside your IDE project path, unless your entire project is under C:/Users/Utilities.

If using CubeIDE and want this code compiled as part of your project (as opposed to a separately compiled library), it needs to be in/under your project directory, like this:

C:/MyProject/src

C:/MyProject/lpm

[SAhma.5]

I have solved the path issues but still error exists. Here is the screenshot.

[Remy ISSALYS]

Hello,

Can you try with the latest STM32CubeWB package (v1.14.1) and the latest version of STM32CubeIDE (v1.10.1)?

Best Regards