Can't enter low power with automatic connection enabled; automatic connection fails

[xxyyhhmm]

Hi, I'm having some issues with the STM32WB06 when trying to achieve low power consumption. I hope someone can help me solve these problems.

Issue 1: After initializing the Bluetooth protocol stack and enabling automatic connection establishment, it causes the device to fail to enter the low power state (BLE wake-up has been disabled). Is this a normal phenomenon? If not, what are the solutions?

Issue 2: Before entering the low power mode, disabling automatic connection establishment allows the device to enter the low power mode normally. However, after waking up, attempting to re-enable automatic connection establishment fails (aci_gap_start_procedure(GAP_AUTO_CONNECTION_ESTABLISHMENT_PROC, LE_1M_PHY_BIT, 0, 0)). What is the solution for this problem?

I look forward to your replies. Thank you very much!

[Imen.D]

Hello @xxyyhhmm ,

Did you try this FAQ article, that may affect your STM32WB Nucleo boards?

[xxyyhhmm]

Hello @Imen.D ,

I've read this article, but the issues mentioned in it don't seem similar to the ones I'm facing