解析STM32 的启动过程，叫“启动文件”，用英文单词来描述是“Bootloader”-Resolve the STM32 boot process, called " startup file" , with the English word to describe the " Bootloader"

液晶滚动显示,显示英文单词，从右往左滚动。-LCD scrolling display to show the English word, and scroll from left to right.