STM32WB15CCU6 P2P client does not connect to server and stuck into a while loop.

[daniele239955]

In my custom board equipped with STM32WB15CCU6 MCU the BLE P2P client application does not work. I'm currenty using the BLE stack full version 1.15 flashed at address 0x08021000. I do not have LSE crystal therefore I use HSE for RTC wakeup (configured as suggested in the application "Configuring STM32WB for Bluetooth LE without an LSE crystal"). I'm able to discover the server because the event HCI_LE_ADVERTISING_REPORT_SUBEVT_CODE is fired but the function aci_gap_create_connection does not quit because M4 application stuck at UTIL_SEQ_WaitEvt (see image). Activating CPU2 debugging through GPIO I can see that after calling aci_gap_create_connection the event BLE_STACK_TICK is non more fired; probably the CPU2 core enter some loop code. In addition, the SYS_CMD_PROCESS event is set (the command is correctly interpreted by the BLE Stack) but it is no more reset therefore the command is not completed by the stack: this is why the M4 application is locked.

Can someone help me to solve this problem? If necessary I can send you my CUBE IDE project.

Best regards.

[daniele239955 · Accepted solution]

The client application works if I configure the LSI for the RF system instead of the HSE/1024. I think that the BLE stack should be updated in orther to accept also the HSE configuration.