FTDI驱动程序库运行失败 [英] FTDI driver library fail on run

问题描述

4使用Raspian Wheezy对Raspberry Pi B进行编程.我的pi带有FTDI usb/串行芯片FT231X的定制子板.我找到了该设备的驱动程序(FTD2xx.1.1.12)，其中提供了一些示例程序.根据文档，我将驱动程序(.a和.so)安装到/usr/loca/lib，然后运行示例程序之一.这是使用SSH客户端(即不是来自Netbeans)完成的.编译错误，程序运行无误.现在，当我尝试将静态库包含在我的Netbeans构建中时，它可以正常运行，但是当我尝试运行(调试或发布版本)时，它无法运行，并返回错误加载共享库时出错:libftd2xx.so:无法打开共享目标文件:没有这样的文件或目录.RUN FAILED(退出值127，总时间203ms)".首先，当我在Netbeans中的静态.a库中进行链接时，为什么要寻找共享库?

4 to program a Raspberry Pi B with Raspian Wheezy. My pi has custom daughter board with an FTDI usb/serial chip FT231X. I located a driver for this device ( FTD2xx.1.1.12 ) which comes with a few example programs. As per the docs I installed the drivers ( .a and .so ) to /usr/loca/lib and then ran one of the example programs. This was done using the SSH client ie not from Netbeans. There o build errors and the program ran without errors. Now when I try and include the static library in my Netbeans build it builds OK but when I attempt to run ( debug or release build ) it does not run and returns an error "error while loading shared libraries:libftd2xx.so : cannot open shared object file: No such file or directory. RUN FAILED ( exit value 127, total time 203ms )". Firstly why is it looking for the shared library when I linked in the static .a library in Netbeans?

推荐答案

在尝试编译示例之一的纯C语言中，我遇到了类似的问题. 我在做

I had a similar issue in plain c trying to compile one of the examples. I was doing

gcc main.c -o ftdiTest -lftd2xx

，但遇到相同的错误. 使用rpath标志编译可解决问题:

but ran into the same error. using the rpath flag compiling solved the problem:

gcc main.c -o ftdiTest -Wall -Wextra -L. -lftd2xx -Wl,-rpath /usr/local/lib

我不是真的需要它，但是将LD_LIBRARY_PATH设置为/usr/local/lib可能会有所帮助.

I'm not if it's actually needed, but setting the LD_LIBRARY_PATH to /usr/local/lib might help.

在使用libftd2xx运行应用程序之前，需要使用sudo和ftdi_sio和usbserial驱动程序(如果存在)运行可执行文件.这是自述文件上的一句话:

The executable will need be run with sudo and ftdi_sio and usbserial drivers need to be unloaded if present before running the app using libftd2xx. Here's a quote from the Readme on it:

如果出现消息"FT_Open失败": 也许内核会自动为该驱动程序加载另一个驱动程序 FTDI USB设备.

If the message "FT_Open failed" appears: Perhaps the kernel automatically loaded another driver for the FTDI USB device.

`sudo lsmod`

If "ftdi_sio" is listed:
    Unload it (and its helper module, usbserial), as follows.

    `sudo rmmod ftdi_sio`
    `sudo rmmod usbserial`

Otherwise, it's possible that libftd2xx does not recognise your 
device's Vendor and Product Identifiers.  Call FT_SetVIDPID before
calling FT_Open/FT_OpenEx/FT_ListDevices.

这也应该在c ++中起作用(我在 OpenFrameworks 项目中使用了相同的方法)

This should work in c++ too (I've used the same in an OpenFrameworks project)

此外，我还记得Raspberry PI1(armv6)上的库存在一些问题，并通过电子邮件发送了FTDI支持.他们提供了重新编译的库，该库可以正常工作.同一库可在Raspberry PI2(armv7)上运行

Also, I remember having some issues with the library on Raspberry PI1 (armv6) and emailed FTDI support. They supplied a recompiled library which worked. The same library works on Raspberry PI2(armv7)

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