用在stm32或者其他单片机上的纯c的俄罗斯方块源码。需要自行编写屏幕显示的函数（绘制方块和文字），然后将该文档加入即可实现俄罗斯方块游戏。-Stm32 or other microcontroller used in the pure c Tetris source. Need to write your own screen display functions (draw boxes and text), then the document can be achieved by adding Tetris game.