串口通信不会啊 求大神指点帮忙

什么单片机，网上应该有很多串口通信的例程呀！怎么不会呢

温度那些都是实时数据，采集回来循环发送不行吗

只要是看你程序怎么写。

大神帮我写一下呗

通信协议要自己设定的 本来对串口就不太熟悉 大神帮帮忙呗

上位机：
eb eb 01 cd     读取温度值
eb eb 02 cd     读取最适温度   
eb eb 03 00 cd  设置最适温度
eb eb 04 cd     打开大棚
eb eb 05 cd     关闭大棚
eb eb 06 cd     消音报警
下位机：
eb eb 81 00 cd  上传温度值
eb eb 82 00 cd  最适温度返回
eb eb 83 cd     设置温度返回
eb eb 84 cd     打开大棚成功
eb eb 85 cd     关闭大棚成功
eb eb 86 cd     消音成功
用的是max485模块 52单片机   跪求大神