连接raspberry pi上的多个设备 [英] Connect multiple devices on raspberry pi

问题描述

GPIO端口（在raspberry pi上）是否可用于串行通信？或者，我们如何在Rasberry pi的单个RX和TX上连接多个设备进行同步通信？



编辑：我有两个设备，一个GPS模块和一个GPRS / GSM模块连接，都使用RX和TX与Pi通信。 GPRS模块有SDA SCL引脚，我可以连接到Pi，但我没有获得设备地址（使用命令i2cdetect -y 1）。 GPS模块只有TX和RX引脚，我必须连接到Pi的RX和TX。

解决方案

从理论上讲，是的，但是你不想进入这么多麻烦 - 它们不是为此而设计的。组织这种沟通将非常困难。如果您了解GPIO是什么，您将理解它： https://en.wikipedia.org/wiki/General-purpose_input /输出 [ ^ ]。



对于通信，使用USB或以太网。在你有一些其他设备（GSP，调制解调器，任何东西）仍然使用RS-232线路，你可以使用其中一个适配器产品。

-SA

Do GPIO ports (on raspberry pi) can be used for serial communication? or, how we can connect multiple devices for simultaneous communication on single RX and TX of raspberry pi?

Edit: I have two devices, a GPS module and a GPRS/GSM module to connect, both uses RX and TX to communicate with Pi. GPRS module has SDA SCL pins that I can connect to Pi, but I am not getting the device address (using command i2cdetect -y 1). GPS module has TX and RX pins only which I have to connect to Pi's RX and TX.

解决方案

Theoretically speaking, yes, but you won't want to get into so much trouble — they are not designed for this purpose. It would be quite difficult to organize such communication. You will understand it if you understand what GPIO is: https://en.wikipedia.org/wiki/General-purpose_input/output[^].

For communications, USB or Ethernet is used. In you have some other device (GSP, modem, anything) which still uses something line RS-232, you can use one of the adapter products.

—SA

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