c - 使用 Linux 和 C 编程控制射频遥控器

Question

我设计了一个电子电路如下：-

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组件：- Tx/Rx = A-434 Dec/Enc= HT12E/HT12D IC 发射器上的 4 个按钮和接收器上的 4 个 LED

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工作： - 很简单。在发射器侧：四个按钮连接到编码器。编码器连接到发射器。在接收端：四个 LED 连接到解码器。解码器连接到接收器。当按下发射器侧的按钮时，接收器上相应的 LED 会亮起。令人惊讶的是它完美无缺。

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问题：- 我只是想删除这四个手动输入按钮并用 Linux 中的 C 程序替换它。如何利用 USB 接口控制发送器电路的输入？

Answer 1

You could look into how homebrewed IR receivers/senders work as they're somewhat similar to what you want. Some of them are:

• http://www.huitsing.nl/irftdi/
• http://dicks.home.xs4all.nl/avr/usbtiny/
• http://www.usbuirt.com/

If you are really not into microcontrollers and you barely know how to program C and connect to a USB device, the Velleman K8055 may be an option. This may be a bit overkill but it's good for learning basic IO stuff. You basically plug it into the USB port and use it as a digital switch board which you can program in C. The last time I checked, libk8055 worked pretty good.

Answer 2

要么使用便宜的微控制器板，例如便宜的 arduino 克隆。或者使用 USB 到并口转换器。