推荐用双串口，每个rxt只接一根线，区分好主机和从机，一定要带时间显示的串口工具，方便分析收发顺序，确定好波特率，一般这种仪器很少使用19200以上的，其次的hi校验位，像lz这样的有很多F的，一般是波特率不对或校验有问题。

曾经破解过格力的面板和主机的通讯， 改造过，

本帖最后由 gallle 于 2014-11-14 09:10 编辑

以下是我破解的一个大概流程！仅供参考！

1. 2013-8-30 10:43:37.95 [COM1] - 00 F8 F8 3F E0 00 00 3F 00 3F 00 00 00 00 80 00 00 00 80 00 00 00 F8 F8 F8 3F 00 00 F0
   
2. 2013-8-30 10:43:38.07 [COM7] - 80 00 3F 00 3F 3F 78 80 78 3F 78 3F 80 80 3F 00 00 3F 78 3F F8 3F 00 80 3F 78 00 3F 3F 00 00 3F F8 80 00 3F 78 3F 80

复制代码这个是错误的例子

1. 
   
2. 2013-8-30 10:44:19.53 [COM1] - 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
   
3. 2013-8-30 10:44:19.65 [COM7] - 3F 00 00 3F 3F 00 00 3F 00 3F 00 00 3F 00 3F 00 3F 00 00 3F 00 3F 00 3F 00 3F 00 00 3F 00 00 3F 00 3F 00 00 3F 3F 00 00 3F 00 3F 3F 00 3F 00 00 3F 00 3F 00 00 3F

复制代码还是错误的

1. 
   
2. 2013-8-30 10:44:32.89 [COM1] - 00 80 80 80 00 00 00 80 80 00 00 00 00 00 00 00 00 00 80 80 80 80 00
   
3. 2013-8-30 10:44:33.01 [COM7] - 3F 00 00 3F 00 3F 80 00 3F 00 80 3F 00 80 80 00 3F 00 00 3F 3F 00 80 80 80 00 3F 00 3F 80 00 3F 80 00 3F 00 3F 00 3F 80 80 00 3F 00 3F 00 3F 80 80 00 3F

复制代码错误的
连续以上三个，我发现应该是奇偶校验错误了，

1. 
   
2. 2013-8-30 10:44:57.04 [COM1] - 68 3F A0 00 02 3F 00 00 00 EF 0B
   
3. 2013-8-30 10:44:57.15 [COM7] - 3F 1E 3F 00 3F 99 00 3F 25 30 3F 35 3F 0A 3F 00 3F 00 3F 80 3F 33 CD

复制代码接近成功的 改正校验位

1. 
   
2. 2013-8-30 11:00:25.32 [COM1] - 68 00 90 00 02 00 00 00 00 92 0B
   
3. 2013-8-30 11:00:25.42 [COM7] - 1E 00 99 00 25 30 35 00 00 00 00 B9 CD

复制代码ok的 调整波特率

1. 
   
2. 2013-8-30 11:00:38.64 [COM1] - 00 E0 E0 00 00 00 E0 00 00 00 00 00 00 00 00 00 00 E0 E0 00
   
3. 2013-8-30 11:00:38.78 [COM7] - 00 3F 3F 00 00 3F E0 00 3F 00 E0 3F 00 3F E0 E0 3F 00 00 3F 00 3F 00 3F E0 E0 E0 00 3F 00 3F 3F 00 3F 00 00 3F E0 3F 00 E0 E0 E0 00 3F

复制代码再改变波特率和校验位，又错了

我觉得你这个波特率应该不对。换其他的试试

楼主语音模块用的哪家的？

祝楼主成功