Bug in EnterLowPower? if(LL_PWR_IsActiveFlag_C2DS() || LL_PWR_IsActiveFlag_C2SB()) semaphore is released however there is no else, so can the semaphore remain locked?

[Remy ISSALYS]

Hello,

The semaphore 4 (CFG_HW_ENTRY_STOP_MODE_SEMID) is released in ExitLowPower function in every case and in some circumstances the semaphore is released earlier in EnterLowPower. The algorithm to enter and exit stop mode on CPU1 are describes in AN5289 (see figure 6 and 7).

Best Regards

[RPowe.9.306]

Hi Remy,

Thanks for answering that. It would be good if that was documented in the code to prevent me asking 🙂