问题描述
我正在编写一个通过串行端口与外部设备通信的 java 应用程序.
I'm writing a java application that communicates with an external device over a serial port.
我想我可以连接到设备 &发送/接收数据正常(我目前无法访问设备..我正在使用模拟器)
I think I can connect to the device & send/receive data ok (I don't have access to the device at the moment..I'm using an emulator)
我只是需要一些关于如何格式化我发送的数据的建议.
I just need some advice on how I should format the data I'm sending.
规范说它应该以字节格式发送.所以如果我有类似以下数据包的东西要发送
The spec says it should be sent in byte format..So if I have something like the following packet to send
AA|0D|07|09|0A|0B|03|01|02|03|04|CSM|CSM
AA|0D|07|09|0A|0B|03|01|02|03|04|CSM|CSM
这是我应该做的事情吗
outputStream.write((byte)0xAA);
outputStream.write((byte)0x0D);
outputStream.write((byte)0x07);
...还是我走远了?
如果这真的很基本，我很抱歉..我以前从未处理过任何此类东西 &几天之内我将无法使用该设备.
I'm sorry if this is really basic..I've never dealt with any of this type stuff before & I won't be getting my hands on the device for a few days.
推荐答案
你应该看看Serial Line IP"(SLIP) 并发送与 IP 不同的数据包类型，请查看 SLIPMUX，后者只是 SLIP 的向后兼容扩展.
You should take a look into "Serial Line IP" (SLIP) and to send different packet types than IP have a look at SLIPMUX, the latter is just a backward compatible extension to SLIP.
参见:
- 滑动:https://www.rfc-editor.org/rfc/rfc1055
- SlipMux:https://datatracker.ietf.org/doc/html/draft-bormann-t2trg-slipmux-00
两者都很容易实现.即使不是 Java，我也喜欢链接我最近写的一个实现:https://github.com/Lobaro/slip
Both are very easy to implement. Even it's not Java I like to link one Implementation I recently wrote: https://github.com/Lobaro/slip
希望对你有帮助.
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