Beacon discovery problem

[AMACH.1]

Hello,

I have configured the BLE Beacon V1.0 sensor with the Nano Beacon software, I can detect it with applications like nrf Connect or ST BLE Toolbox. I've programmed a stm32 card as a client, I can detect the devices, but I can't detect the beacon sensor; that's the problem I'm having.

Here are screens showing the configuration I made with the Nano Beacon software:

Here are the functions I programmed on the stm32 board to detect the beacon:

with : 

#define SCAN_P 16384      

#define SCAN_L 16384

/********************************************************************************************/

Do you have any suggestions please?

Thanks in advance.

#Beacon