I just stumbled across this same error in the stm32l0xx_hal_flash_ex module, and it's related to behavior in the stm32l0xx_hal_flash module:HAL_FLASH_Unlock() clears the PECR_PELOCK bit, as it must before it can clear the PECR_PRGLOCK bit. However, H...

Posted on June 21, 2018 at 06:06 I've also run into this as well. The modifications you talk about in your More Stable Tweak are undesirable to me because they'll affect any other projects I create from those reference files. But I just discovere...