keil直接生成bin优化编译文件，hex不能很好说明程序文件大小。测试好像只能arm由此功能，因为需要先生成.AXF文件才能自动转换成BIN-keil optimizing compiler directly generate bin file, hex file sizes are not well explained procedures. Thus it seems only arm function test, because of the need Mr. into. AXF file to automatically convert BIN