Resolved! Stm32F072CBT6 versus Stm32F072C8T6
hello. I was using PA9 pin as an interrupt in a project made with Stm32F072CBT6. I am working as Stm32F072CBTx in cubeide. The card I am working on accidentally installed Stm32F072C8T6. only difference is that it is visible in flash but PA9 pin can b...