https://blog.csdn.net/akk41397/article/details/106419396/
https://blog.csdn.net/qq_40700822/article/details/106376492?utm_medium=distribute.pc_relevant.none-task-blog-2%7Edefault%7EBlogCommendFromBaidu%7Edefault-5.control&depth_1-utm_source=distribute.pc_relevant.none-task-blog-2%7Edefault%7EBlogCommendFromBaidu%7Edefault-5.control
注意：GPIO0此时要接低电平
若出现……，请按一下开发板的复位按钮。