使用Python读取USB-GPS信息 [英] Reading USB-GPS info with Python

问题描述

我编写了一个小python脚本，该脚本使用了来自USB gps加密狗的信息.到目前为止，我一直在linux中工作，我可以在/dev/中识别设备并使用pySerial从中读取NMEA数据.但是，这并不是一个完美的解决方案，并且它也不以任何方式独立于平台，因此我开始着眼于pyUSB尝试与该设备进行通信.

I've written a small python script that uses information from a usb gps dongle. This far I've been working in linux where I could just identify the device in /dev/ and read NMEA data from it using pySerial. This isn't a perfect solution though and it's not platform independent in any way so I started looking at pyUSB to try to communicate with the device.

设备:

• 产品名称:ND-100S
• 波特率:4800
• USB类别:0xEF
• 子类:2

我的问题是我对USB知之甚少，所以我不知道如何初始化和读取其中的句子.

My problem is that I know very little about usb so I don't know how to initialize and read sentences from it.

到目前为止，我的测试代码如下:

My testing code this far looks like:

import usb
import sys

device = usb.core.find(bDeviceClass=0xef)

print " + Class: %s" % device.bDeviceClass
print " + Subclass: %i" % device.bDeviceSubClass
print " + Protocol: %i" % device.bDeviceProtocol
print " + Length  : %s" % device.bLength
print " + Configurations: %i" % device.bNumConfigurations

...通常只是获取有关设备的信息.

... Mostly just getting information about the device.

任何人都对此有经验吗?

Anyone have any experience with this?

推荐答案

即使是USB加密狗，也只能通过串行接口与GPS设备通信.但是，有12种NMEA版本，因此，如果您希望它与平台无关，我建议使用python-gpsd.

even if it is USB dongle, you communicate with GPS device via serial interface only. However, there are a dozen of NMEA flavors so if you want it to be more platform independent, I would suggest using python-gpsd.

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