轮询调制解调器以获取传入数据的最佳设计是什么？
我有一个 GSM 调制解调器连接到我的计算机，我想使用我编写的 python 程序接收发送到它的短信，我只是想知道轮询数据的最佳技术是什么。
我是否应该编写一个具有无限循环的程序，该程序不断检查传入的短信，即在循环内程序发送 AT 命令并读取输入数据。或者调制解调器是否有一种方式向应用程序发出传入数据（短信）的信号。
我试图想象手机只是一个 GSM 调制解调器，当收到短信时，手机会提醒您该事件，或者手机软件是否有一个无限循环来轮询传入的数据。
I have a GSM modem connected to my computer, i want to receive text messages sent to it using a python program i have written, am just wondering what is the best technique to poll for data.
Should i write a program that has a infinite loop that continuously checks for incoming sms's i.e within the loop the program sends the AT commands and reads the input data. or do modems have a way of signaling an application of an incoming data(sms).
Am trying to imagine a cellphone is just a GSM modem, and when an sms is received, the phone alerts you of the event, or does the phone software have an infinite loop that polls for incoming data.
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我以前写过类似的东西。有一种方法可以使用 AT 命令告诉调制解调器在每次收到 SMS 时向您发出信号。
作为参考，我在嵌入式应用程序中使用了 Maestro 100 GSM 调制解调器。
首先，您必须正确初始化调制解调器。我使用文本模式发送短信，但您可能使用不同的模式。从这些中选择你想要的。 AT+CNMI是最重要的。
然后您将等待消息通知，如下所示。 （不要匹配索引号，这可能会因通知而异）
当您收到该通知时，检索未读短信：
我建议您还添加一次民意调查，也许每 5 分钟左右一次，以防万一您错过通知。对于串行通信，您永远无法确定！
I have written something similar before. There is a way using AT commands to tell the modem to signal you each time an SMS is received.
For reference, I was using a Maestro 100 GSM Modem in an embedded application.
First you have to initialize the modem properly. I was using text mode for the SMS, but you might be using something different. Pick from these what you want. AT+CNMI is the most important.
You would then wait for a message notification, that will look like this. (Don't match on the index number, that might differ between notifications)
When you get that notification, retrieve the unread SMS's:
I would recommend you also add a poll, maybe every 5 minutes or so, just in case you miss a notification. With serial comms you can never be sure!
我发现我记不住很多与短信相关的 AT 命令集。安德烈·米勒的回答似乎敲响了警钟。无论如何，您应该非常仔细地阅读文档，我确信其中存在一些问题。
我对轮询的建议是至少每 5 秒一次 - 这只是为了在面对断开连接时的鲁棒性和响应能力。
我使用状态机在初始化、读取和删除消息之间导航。
I find I can't remember much of the AT command set related to SMS. Andre Miller's answer seems to ring a few bells. Anyway you should read the documentation very carefully, I'm sure there were a few gotchas.
My recommentation for polling is at least every 5 seconds - this is just for robustness and responsiveness in the face of disconnection.
I used a state machine to navigate between initialisation, reading and deleting messages.