Access Data Held On The Device?

Feb 6, 2011

I have a sim card reader, that is a usb-to serial device. It has a sim card inserted. what i need to do is access that sim card to get the data, phonebook and sms for example. I CAN connect to the reader but i cannot send any commands or recieve any data.

What are the commands i could use to access data held on the device. The chipset is pl-2303

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I have some code I've written that has worked sporadically, and I don't understand the reasons why it succeeds or fails. The code in question is fairly straightforward, a single call to CreateFile() from VB.NET;

Dim Handle As Integer = Win32.CreateFile(KeyboardPath, GENERIC_READ Or GENERIC_WRITE, _
FILE_SHARE_READ Or FILE_SHARE_WRITE, Nothing, _
OPEN_EXISTING, &H80, 0)

The problem is that when I call this, I get the win32 error ERROR_ACCESS_DENIED, but if I remove the GENERIC_READ request, the handle is granted just fine. This has happened before (on a different machine), and I'm completely stumped as to what sequence of events would result in the ability to write to a device and not read from it. The device in question is a Logitech G510 keyboard, and this code has worked fine before on a Vista 32-bit system (I'm now testing it on a Win7 x64 system and fixing all the compatibility issues I can find).My question is, what can cause CreateFile to sporadically fall back to only allowing write access, what am I doing wrong that's causing it to do so, and how would I go about fixing the issue? I've included the full function below - note that with ONLY the GENERIC_READ flag passed, I also am not allocated a handle (same error)

As reference, the particular device path I've been using is \?hid#vid_046d&pid_c22d&mi_00#7&1a08be07&0&0000#{4d1e55b2-f16f-11cf-88cb-001111000030} (This is for a Logitech G510 gaming keyboard)

[code].....

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' sending to device with physical COM port number"
Try
Dim searcher As New ManagementObjectSearcher( _

[Code]...

But how to send data to the device listed in "Universal Serial Bus Controllers" tab without any physical COM port number?

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If I use SendKeys("RIGHT 8") for example the maze usually only moves a few times, sometimes maybe only 1.

Also I looked up how to hold a key down/simulate it but it's not working for the arrow keys(untested on other keys).

The only way i've made it work is delays, decently delayed like 200ms & it's a huge maze but if i hold a key manually I can go much faster yet sendkeys method can't go that fast using individual presses this is why I want to simulate a holding down action.

---it must be working xample code I can make it work for my purpose if it works like on button click, etc....but I tried copying full (supposedly working) codes before & they never worked for me/my key, xample cause i've looked & tried hard(with only failing results).

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Code
Private Sub DataHandler()

[code].....

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I have changed the dictionary declaration to (of long) but get the same issue.

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Example:

Say if Temperature value held in the variable Temperature is 8.5 the if statement checks to see if the DewPoint value is "between" +-1 of the temperature value. i.e. 7.5 to 9.5 as well as the value in Humidity is equal to or greater than 90 and Pressure is Less than or Equal to 1013.25 then the conditon is met, else the conditon is not met.

I have put some code together below in NotePad++ to see if what I am trying to do is the correct way to go about it (note I have not yet tried this code in VB.NET as I don't have it at work).

pass comment on the code and if it is wrong explain what I should do to get it to work.

Dim DewPoint as Single
Dim Temperature as Single
Dim Humidity as Single

[Code]....

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