Resolved! Bug in STM32F103: enabling FSMC clock pulls up PB7
I have an STM32F103 board call 野火STM32F103ZE_霸道开发板,i found enable FSMC clock will pull up PB7 GPIO to 3.26v , i try decrease my code ceaselessly to verify this bug, finaly it can reproduce bug easily like this #include "stm32f10x.h" int main (v...