用Linux编写的网页实现对机械臂的控制

Question

首先，我不再是一名学生，目前正在为一位朋友做一件事。我正在制作一个网站，其中有一个机械臂和引爆按钮，将允许用户与机械臂的基本互动的现场视频馈送。

我已经设置了网站和现场视频馈送。我使用闪存媒体编码器和闪存服务器4.5确实有4秒的延迟。对减少延误时间有什么建议吗？

我已经完成了maplin机械臂所需的python代码，现在我卡住了，不确定如何将我的python代码与网页界面链接起来？有没有人可以提供我可以编辑和学习的代码？

Python代码

import usb.core
import usb.util
import sys
import time

# This program is intended to control a robotic arm via USB from Linux
# The code is written in Python by Neil Polwart (c) 2011
# It is a work in progress and will improved!

# locate the device device

dev = usb.core.find(idVendor=0x1267, idProduct=0x0000)

# assigns the device to the handle "dev"
# can check the device is visible to Linux with command line command lsusb
# which should report a device with the above vendor and id codes.

# was it found?

if dev is None:
raise ValueError('Device not found')           # if device not found report an       error


# set the active configuration

dev.set_configuration()

# as no arguments, the first configuration will be the active one
# note as commands are sent to device as commands not data streams 
# no need to define the endpoint

# defines the command packet to send

datapack=0x80,0,0

# change this packet to make different moves.  
# first byte defines most of the movements, second byte shoulder rotation, third           byte light
# command structure in more detail:
# http://notbrainsurgery.livejournal.com/38622.html?view=93150#t93150

print "requested move",datapack    # reports the requested movement to the user

# send the command

bytesout=dev.ctrl_transfer(0x40, 6, 0x100, 0, datapack, 1000)

# outputs the command to the USB device, using the ctrl_transfer method
# 0x40, 6, 0x100, 0 defines the details of the write - bRequestType, bRequest,    wValue, wIndex
# datapack is our command (3 bytes)
# the final value is a timeout (in ms) which is optional
# bytesout = the number of bytes written (i.e. 3 if successful)

print "Written :",bytesout,"bytes"  # confirm to user that data was sent OK

# wait for a defined period

time.sleep(1)    # waits for 1 second whilst motors move.

# now STOP the motors

datapack=0,0,0

bytesout=dev.ctrl_transfer(0x40, 6, 0x100, 0, datapack, 1000)

if bytesout == 3: print "Motors stopped"

因此，我需要找到一种方法来通过网站界面编辑数据包行。如有任何帮助，我们不胜感激！我使用的是Windows 7安装程序，但确实有权访问vmware

Answer 1

我使用mod_python设置了一个Apache服务器，并创建了一个处理程序来导入您的脚本并运行必要的代码。您可以在JavaScript中设置AJAX脚本(使用或不使用jQuery)。每次要运行Python脚本时，都需要向服务器发出一个请求。您可以根据需要通过HTTP来回传递任何信息。

这是一个Python和CGI模块的good tutorial。