acr122标签阅读器在OS上的应用

Question

当用户向ACR122U nfc读取器点击标记时，我需要创建一个应用程序将带有数据的帖子发送到web服务。应用程序需要在启动后继续自己运行，并在每次点击标记时发送POST。对于基于标记数据的条件逻辑，需要对应用程序中的POST url进行控制。这是一个简短的POC安装，不超过500个标签滑动在一个4小时的窗口。当用户点击几个标签时，将会有一个阅读器和一个屏幕显示一个带有累积列表的网页。

由于我有一个MacBook Pro (OSX10.7)，我已经尝试了几种方法与该平台。不幸的是，没有成功。我更喜欢OS解决方案，但对建议持开放态度。

考虑到以下情况，我需要做什么？有没有更好/更容易的方法？

1. tagstand_writer：

- The ACR122U came with software called 'tagstand\_writer\_macosx\_0\_6\_5\_beta'. tagstand\_writer does not seem to encompass the functionality I want. It seems only to enable simple read/write without continuous polling. Can it be used by a wrapper application that does the polling, or can it be used in a way I am not aware of to achieve the desired functionality? Anyway, I tried to write a url to my tag, per the instructions, but was unable to. I forget what the problem was, but it didn't seem worth pursuing. I was, however, able to read the tag per the instructions.

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1. libnfc

- Searching for clues, I stumbled upon libnfc. So, I took a deep breadth and braved the install process. It didn't go very well. The documentation is 'ok'  (not stumble-proof), and the process was challenging. I hit a few pot holes in the configure/make process and it took a while. Eventually, I was able to get one of the examples running. But, I wasn't sure what to do next. It seems pretty low level. There is an example provided called 'nfc-poll' but, it exits after a tag is read and I'm not sure if I can make that do what I want. I think this is the most promising of my 3 attempts, but am not sure what to do next.

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1. 塔格事件

- Looking for a higher-level starting point, I found tageventor. It seemed promising in that tagEventor, once started, is supposed to run and poll and call a script when a tag is read. The script, supposedly can be anything. So, I tried, but was unable to get it working. I found a [more current version](https://github.com/bettse/tagEventor) on github and tried that as well to no avail. I could get tagEventor to run, but when I touched a tag to the reader there was an error: "ERROR: readerCheck:: RPC transport error". I have no idea what that is, and neither does the internet apparently. Also, while trying to debug tageventor, I did notice that my console was outputting an error: "token in reader ACS ACR122U PICC Interface 00 00 cannot be used (error 229)" regardless of whether tageventor was running or not. 

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简单/快速的解决方案是什么？

Answer 1

遗憾的是，我没有及时找到OS解决方案，而是使用了Windows盒，这很容易。SDK是为Windows制作的：http://www.acs.com.hk/en/products/12/acr122u-nfc-contactless-smart-card-reader-software-developmnt-kit/

Answer 2

我建议你在你的应用程序中使用类似的东西: echo 1\ pcsctest >out.txt cat out.txt grep“当前的读取器ATR值”\ tr -d“AC.26 tr ":”\{print $2}‘“，你可以创建一个bash脚本，如果你愿意的话，你可以把它放在守护程序模式中。