blocks|key|636881|text|据我所知，使用Arduino环境，你不能从你自己的库中访问你自己的库。没有办法添加路径，因此编译器根本没有办法找到代码。这使得编写使用另一个库中的代码的库变得很困难。我的网络研究表明，这是一个多年来一直存在的问题，但据我所知，还没有得到解决。我怀疑在实现细节上存在困难，或者可能希望以牺牲功能为代价来保持系统的简单。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|636882|当然，您总是可以将代码剪切并粘贴到每个新库中，但这是非常不理想的。您还可以将所有代码放在一对.h和.cpp文件中，从而编写一个巨大的库。这也不是很令人满意，但我偶尔也会这样做。|636883|但是，在您自己的库中使用标准Arduino库是一种变通方法，您可以将其放置在sketchbook/+library目录中。由于草图包含标准库位置的路径并链接标准库代码，因此可以在草图中包含感兴趣的标准库的头文件。在下面，也是在你的草图中，包括你自己的库头文件。然后标准库将可用于您的库以及您的草图。|636884|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|$]]

Using the Arduino environement, as I understand it, you cannot access your own library from another of your own libraries. There is no way to add paths, so there is simply no way for the compiler to find the code. That makes it hard to write libraries that use code in another of your libraries. My web research indicates this has been a problem for years but to my knowledge has not been solved. I suspect there are difficulties in the implementation details or perhaps a desire to keep the system simple at the expense of capability.

Of course, you can always cut and paste code into each new library, but that's exceedingly sub-optimal. You can also write one huge library with all of your code in one pair of .h and .cpp files. That's also not very satisfactory, but I've done it on occasion.

There is a work around, however, for using standard Arduino libraries in your own library that you're placing in your sketchbook/libraries directory. Since sketches include paths to the standard library locations, and link the standard library code, you can include the header file for the standard library of interest in your sketch. Below that, also in your sketch, include your own library header file. The standard library will then become available to your library as well as to your sketch.

blocks|key|853404|text|我已经能够通过使用相对路径在另一个Arduino库中包含一个库。例如，要将AbstractSwitch库包含到DigitalSwitch库中，假设这两个库都位于Arduino的标准库文件夹中各自独立的文件夹中，则可以使用以下include语句：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|853405|#include+"../AbstractSwitch/AbstractSwitch.h"|code-block|syntax|javascript|853406|换句话说，您的include语句应该是这样的：|853407|#include+"../LibraryFolder/LibraryHeaderFile.h"|853408|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

I have been able to include a library in another Arduino library by using a relative path. For example, to include the AbstractSwitch library into the DigitalSwitch library, assuming that both of these libraries live in their own separate folders within Arduino's standard library folder, you can use the following include statement:

<pre><code>#include "../AbstractSwitch/AbstractSwitch.h"
</code></pre>

In other words, your include statement should read: 

<pre><code>#include "../LibraryFolder/LibraryHeaderFile.h"
</code></pre>

blocks|key|637021|text|不推荐的方法:通过切割boards.txt文件，基本上可以将任何外部库代码添加到Arduino+IDE构建中。c/cpp标志中的头和ld标志中的库。这对于使用外部工具的库开发人员可能很有用(cmake/QT+creator+)。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|637022|我修改了/home/pekka/arduino-1.8.5/hardware/teensy/avr/boards.txt，将"/coderoot“添加到了gcc的include+path和E_OS_arduino+define中，修改了以下几行：|637023|Teensy36.build.flag.cpp=-fno-exceptions+-felide-constructors+-std=gnu%2B%2B14+-Wno-error=缩小-fno-rtti+i/coderoot+-DE_OS_arduino|637024|Teensy36.build.flag.c=-i/coderoot+-DE_OS_arduino|637025|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|J|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|K|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|L|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|M|8|@]|9|@]|A|$]]|$1|H|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|I|$]]

Not recommended method: It is possible to add basically any external library code to Arduino IDE build by knifing boards.txt file. Headers in c/cpp flags and libraries in ld flags. This may be useful for library dev using external tools (cmake/QT creator for me today). 

I modified /home/pekka/arduino-1.8.5/hardware/teensy/avr/boards.txt by adding "/coderoot" to gcc include path and E_OS_arduino define, modified lines below:

teensy36.build.flags.cpp=-fno-exceptions -felide-constructors -std=gnu++14 -Wno-error=narrowing -fno-rtti -I/coderoot -DE_OS_arduino

teensy36.build.flags.c=-I/coderoot -DE_OS_arduino

I'm trying to write an Arduino library (effectively a C++ class) which itself references another library I have installed in my Mac's ~/Documents/Arduino/libraries directory.

At the top of the .cpp of the library I'm writing, I've tried

<pre><code>#include &lt;ReferencedLibrary.h&gt;
</code></pre>

and

<pre><code>#include "ReferencedLibrary.h"
</code></pre>

... neither of which work. I can successfully <code>#include &lt;ReferencedLibrary.h&gt;</code> from sketches in my ~/Documents/Arduino directory. Am I missing something or is this a limitation of the Arduino IDE/makefile? Is there a workaround?

Is it possible to include a library from another library using the Arduino IDE?

编译器

我正在尝试编写一个Arduino库(实际上是一个C++类)，它本身引用了我在Mac的~/Documents/Arduino/libraries目录中安装的另一个库。在我正在编写的库的.cpp的顶部，我尝试了#include <ReferencedLibrary.h>和#include "ReferencedLibrar...

问是否可以使用Arduino IDE包含来自另一个库的库？
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