Posted on July 17, 2017 at 09:24My Environment:STM32F042 Nucleo-32 dev board which has STM32F042K6T6 MCU of 32pin QFPKEIL ARM MDK v5Host Windows 10 OS The BOOT0 pin PB8 is not available on the CN3 or CN4 connector.  I've used the below code and it i...