how to read data from usb port connected device

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I have a device that measures temperature and it is connected through usb to my pc, now i want to display the temperature in device display i want to display in my windows form, how can i achieve this task, i am completely new to this type of task

1. connected to usb port successively
2. i opened the port.

but i don't know how to read data...

please help me....

thx in advance

Posted 24-Jan-14 19:31pm

Ravi Sargam

Updated 24-Jan-14 20:27pm

v3

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Aydin Homay 25-Jan-14 1:59am

Hi please tell me what is your programming platform? and which one programming language is your target language ?

Ravi Sargam 25-Jan-14 2:09am

c#

Aydin Homay 25-Jan-14 3:00am

Your device has a SDK ?

Ravi Sargam 25-Jan-14 3:08am

no

2 solutions

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Dave Kreskowiak · Answer 1 · 2014-01-24T19:57:00

Solution 1

First, you have to know how this device exposes itself to your code. Is it through a COM (serial) port or what? Without knowing that, it's IMPOSSIBLE to talk to the device.

Consult the documentation on the device and/or the SDK for it, if there is one.

Posted 24-Jan-14 19:57pm

Dave Kreskowiak

Comments

Ravi Sargam 25-Jan-14 1:58am

it is through COM port

Dave Kreskowiak 25-Jan-14 11:30am

OK, that's easy enough. There are tons of examples on the web for communicating through a serial port with .NET. All you have to do is Google for "C# Serial Port tutorial".

That solves one part of the problem. The other part is what communication parameters do the device support and what commands does it respond to. AGAIN, you have to have documentation on the device that spells this out. There is no standard to go by for this. Every device is different.

Rahul VB · Answer 2 · 2014-01-25T08:14:00

Solution 2

Just read this,

C# USB HID Interface[^]

This should hope fully help you and from here just progress fetching data from it, i am sure this will help you build your logic on USB.

Thanks

Posted 25-Jan-14 8:14am

Rahul VB