blocks|key|830393|text|可能不完全是您想要的，但是this+instructable可能会为您指明正确的方向|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|830394|entityMap|0|LINK|mutability|MUTABLE|url|http://www.instructables.com/id/Android-G1-Serial-Cable/^0|D|H|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

Probably not exactly what you're looking for, but <a href="http://www.instructables.com/id/Android-G1-Serial-Cable/" rel="nofollow">this instructable</a> might point you in the right direction

blocks|key|1045363|text|最大的问题可能是USB->串行适配器：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1045364|您需要一个用于USB串行驱动程序的设备驱动程序，该驱动程序可能未包含在android内核中。|1045365|另一种选择是使用类似libusb的东西(可能也必须移植到android+)和基于libusb的用户空间驱动程序。|1045366|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|H|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|I|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|J|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|G|$]]

The biggest problem is probably the USB->Serial Adapter:

You need the either a device driver for the USB Serial Driver, which is probably not included in the android kernel.

The other option is to use something like libusb (which may have to be ported to android as well) and a user space driver based on libusb.

blocks|key|1045466|text|如上所述，您需要为您拥有的任何USB<->串行设备提供设备驱动程序。这些设备中的许多都使用了多产的PL2303芯片：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1045467|http://www.qbik.ch/usb/devices/showdr.php?id=175|offset|length|1045468|这是普通的linux内核所支持的，并且已经存在很长时间了。我已经用过了，它工作得很好，所以我建议你坚持使用使用这个芯片的USB<->串行设备。|1045469|除此之外，使用udev时，这些设备通常显示为/dev/ttyUSB#。我不知道Android是如何做到这一点的，所以你需要弄清楚。|1045470|最后，您将需要构建RxTx本机代码。这段代码相当粗糙-我在一个相当现代的Angstrom上构建它时遇到了问题，而且我根本没有试图交叉编译。|1045471|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|1C|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|T|8|@]|9|@$D|U|E|V|1|W]]|A|$]]|$1|F|3|G|5|6|7|X|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|Y|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|Z|8|@]|9|@]|A|$]]|$1|L|3|-4|5|6|7|10|8|@]|9|@]|A|$]]]|M|$N|$5|O|P|Q|A|$R|C]]]]

As noted above, you'll need to come up with device drivers for whatever USB&lt;->Serial device you have. Many of these devices use the Prolific PL2303 chip:

<a href="http://www.qbik.ch/usb/devices/showdr.php?id=175" rel="nofollow">http://www.qbik.ch/usb/devices/showdr.php?id=175</a>

which the stock linux kernel has support for, and has had for a long time. I've used this and it works fine, so I would recommend you stick with USB&lt;->Serial devices that use this chip. 

Beyond that, with udev these devices normally show up as /dev/ttyUSB#. How that happens with Android, I don't know, so you'll need to figure that out. 

Finally, you will need to build the RxTx native code. This code is pretty crufty - I had problems building it on a fairly modern Angstrom, and I was not trying to cross-compile at all.

blocks|key|830604|text|我刚刚将JavaCOMM+(+GNU+RXTX+)库移植到了安卓上。这里是链接http://v-lad.org/projects/gnu.io.android/|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|830605|您可能仍然需要重新构建内核，还可能需要针对您的环境重新编译共享库。但这应该是你开始学习的起点。|830606|entityMap|0|LINK|mutability|MUTABLE|url|http://v-lad.org/projects/gnu.io.android/^0|13|15|0|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@$A|O|B|P|1|Q]]|C|$]]|$1|D|3|E|5|6|7|R|8|@]|9|@]|C|$]]|$1|F|3|-4|5|6|7|S|8|@]|9|@]|C|$]]]|G|$H|$5|I|J|K|C|$L|M]]]]

I just ported the JavaCOMM ( GNU RXTX ) library to the Android. Here is the link <a href="http://v-lad.org/projects/gnu.io.android/" rel="noreferrer">http://v-lad.org/projects/gnu.io.android/</a>

You still might need to rebuild your kernel and maybe recompile the shared library for your environment. But this should get you started.

blocks|key|1045622|text|您首先需要做的是启动平板电脑，以便获得对串行端口的读/写访问权限。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1045623|完成此操作后，请看一看Android+Serial+Port+API。您可以下载源代码，看看它是如何实现的。|offset|length|1045624|它有一个原生库，可以获取串行端口的文件描述符，然后您就可以对端口进行读写。通常，应用程序可能不会列出平板电脑上的所有可用端口。要查看设备的连接位置，请使用HostMode将其插入U盘，并在仿真器中键入"dmesg+%7C+tail“。它应该会为您提供有关设备和连接到的端口的详细信息。|1045625|我还使用了Archos平板电脑，我的设备连接到了"/dev/ttyACM0“。|1045626|祝好运!|1045627|entityMap|0|LINK|mutability|MUTABLE|url|http://code.google.com/p/android-serialport-api/^0|0|B|N|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|T|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|U|8|@]|9|@$D|V|E|W|1|X]]|A|$]]|$1|F|3|G|5|6|7|Y|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|Z|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|10|8|@]|9|@]|A|$]]|$1|L|3|-4|5|6|7|11|8|@]|9|@]|A|$]]]|M|$N|$5|O|P|Q|A|$R|S]]]]

What you need to do first is to root the tablet in order to get Read/Write access to the serial ports.

After you do this take a look at <a href="http://code.google.com/p/android-serialport-api/" rel="nofollow">Android Serial Port API</a>. You can download the source code and see how it is implemented.

It has a native lib that gets a file descriptor to the serial ports and then you can read and write to the ports. Usually the app may not list all the available ports on the tablet. To see where your device is connected, plug it in the USB with HostMode, and in an Emulator type "dmesg | tail". It should give you details about the device, and the port that is connected to.

I also used an Archos Tablet, mine device was connected to "/dev/ttyACM0".

Good Luck!

blocks|key|1045714|text|是的，在Android上从手机端使用串行设备肯定是一团糟。问题是AOS上的各种设备没有文档记录，并且很少与标准的Linux设备重合。因此，你永远不能确定你实际上在和什么人说话，某个设备，抽象层(HAL，UART，PCI等)。以下是关于如何从外部USB连接的PC与串行设备(调制解调器)通信的教程。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1045715|在任何情况下，如果您的手机确实支持USB主机模式，则必须有其他方法来访问使用该模式的串行端口/设备。毕竟，向后兼容性通常会确保您的USB电缆支持某种类型的传真、电话或外部调制解调器。也有可能包含一些虚拟串行设备的tehtering+...|1045716|这里有一些关于这个here的教程。|offset|length|1045717|PS。这类程序(如Vlad)和应用程序(如串行api)的主要问题是，它们对设备/端口名称和访问(读/写)这些设备/端口所需的权限做了过强的假设。|1045718|entityMap|0|LINK|mutability|MUTABLE|url|http://forum.xda-developers.com/showthread.php?t=1471241^0|0|0|9|4|0|0|0^^$0|@$1|2|3|4|5|6|7|R|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|S|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|T|8|@]|9|@$F|U|G|V|1|W]]|A|$]]|$1|H|3|I|5|6|7|X|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]]|K|$L|$5|M|N|O|A|$P|Q]]]]

Yes, it's definitely a mess to use the serial devices from the phone side on the Android. The problem is that the various devices present on the AOS is not documented, and rarely coincides with standard Linux ones. Thus you are never sure what/who you are actually talking to, some device, abstraction layer (HAL, UART,PCI etc). Here is a tutorial on how to talk to a serial device (the modem) from an externally USB connected PC. 

In any case, if your phone does support USB host mode, there have to be another way to reach your serial port/devices using that. After all, backward compatibility does often insure some kind of FAX, telephony or external modem support from your USB cable. Also there is tehtering which may also contain some virtual serial device...

There is a tutorial for some of this <a href="http://forum.xda-developers.com/showthread.php?t=1471241" rel="nofollow">here</a>. 

PS. The main problem of such programs (like that of Vlad) and applications (like serial-api) are that they make too strong assumptions on the device/port names and the permissions needed to reach (read/write) these...

I want to send signals via serial port using the JavaComm API classes on an Android device, and here is how I imagine it:

1- the Android device would be: Archos 3.2 which has android 2.2 and USB host mode.

2- include RxTx lib package with my Android app. and include RxTx native code using Android NDK.

3- a short cable which is usb-->serial.

Could you explain to me where I might face problems?

using serial port RS-232 in android?

设备驱动程序

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我想在安卓设备上使用JavaComm应用程序接口类通过串口发送信号，下面是我的设想：1- Android设备将是: Archos 3.2，它具有android 2.2和USB主机模式。2-在我的RxTx应用中包含Android lib包。并包含使用Android NDK的RxTx原生代码。3- usb-->串行的短电缆...

问在android中使用串口RS-232？
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