ST官方标准库V3.5默认的外部晶振频率为8M，实际使用中外部晶振需要修改为16M； 经过实验，修改有效，具体的patch如下： 修改 HSE_VALUE 值 diff --git "a/Libraries/CMSIS/CM3/DeviceSupport/ST/STM32F10x/stm32f10x.h" "b/Libraries/CMSIS/CM3/DeviceSupport/ST/STM