ST公司官方发布的开发板原理图+PCB，PROTEl99格式，可以直接使用，并带有pdf-ST' s official announcement of the development board schematic+ PCB, PROTEl99 format, can be used directly, and with a pdf

STM32系列处理器 LQFP封装库。可用于画PCB，protel 99se格式-STM32 family of processors LQFP package libraries. Can be used to draw PCB, protel 99se format