本文介绍了如何查看作为命令发送到USB端口的内容。的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
How can I see what is sent as a command to the USB port that a device is on when you press a button from a software to send information to the device.
For example: If I want to print a text document, I press on a certain "print" software and the program sends information to the USB- port of the printer to which the printer is connected. How can I see the sent command?
我尝试了什么：
What I have tried:
I tried several softwares without successSerialPortListener，DkPortMon，SerialCommunications。
SerialPortListener, DkPortMon, SerialCommunications.
推荐答案
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