stm32标准模板，控制led灯，可读写时钟模块验证成功才上传的，使用时根据引脚稍稍修改一下，如不想修改按程序内定义的连接即可。(声明：本人上传所有程序均是测试过的好用的.用户名zhaoxuan1190)-stm32 standard templates, control led lights, can read and write clock module validation is successful only upload when used in accordance with the pin slightly modify it, such as do not want to modify the connection can be defined according to internal procedures.(Disclaimer: I uploaded all programs are easy to use tested username zhaoxuan1190.)