单片机是怎么将浮点模拟量和整形开关量通过串口通讯发送到上位机的？上位机如何对收到的字节流解包？
http://wenku.baidu.com/link?url=GD-5NhPC0qwppBCSdyfYJ4hbC0SFl_OI-yTTx_D8y1VOJ6fCMeAaSBV_95BB78n3D5jTtvixfAoprMi3K5qTiE6vStevFb-VX_mmb1PJl3a