通过iPhone音频插孔读取数据 [英] Read data through iPhone audio jack

问题描述

我正在寻找一种方法来读取从Arduino通过iPhone的音频插孔发送的原始数据。

我搜索了很多，发现

输入信号将为 analogue 所以你需要将它（通过频移键控调制解调器）转换为 digital ，这个调制解调器库应该做的伎俩（我用它转换成数字，不幸的是我没有我的旧项目分享，但它已经过测试）：

< a href =https://github.com/jensmeder/FSKModem =nofollow noreferrer> https://github.com/jensmeder/FSKModem
https://en.wikipedia.org/wiki/Frequency-shift_keying

另外看看这个lib（你试过吗？也许它会对你的情况有所帮助）：

https ：//github.com/billhsu/jackDuino

同时检查一下（适用于iPhone的音频插孔调制解调器）：

https://www.sparkfun.com/products/retired/10331

I am looking for a way to read raw data that is being sent from the Arduino through iPhone's audio jack.

I searched a lot and found this which detects whether a jack plug is connected or not but couldn't find any code to read the raw data.

Any help in this regard will be greatly appreciated!

Thanks.

解决方案

If the bandwidth of the incoming signal fits into the bandwidth of the iPhone's A/D converter (± 20Hz to 20kHz) you can read it.

You'll need audio jack to audio jack cable with Tip/Ring1/Ring2/Sleeve pinout (Balanced plug on the picture) on both sides (Tip/Ring/Sleeve (Conventional stereo plug) won't work).

The incoming signal will be analogue so you'll need to convert it (through Frequency-shift keying modem) to digital, this modem library should do the trick (I've used it to convert into digital, unfortunately I do not have my old project to share but it's tested):

https://github.com/jensmeder/FSKModem https://en.wikipedia.org/wiki/Frequency-shift_keying

Also take a look at this lib (Did you try it? Maybe it will help better in your case):

https://github.com/billhsu/jackDuino

Also check this out (Audio Jack Modem for iPhone):

https://www.sparkfun.com/products/retired/10331

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