Hardware & Devices

Regarding data transfer for USB mass storage devices

7-Mar-07 6:18

That would depend on the MP3 player in question, it's manufacturer, and if an SDK even exists for it, which I highly doubt.

Dave Kreskowiak
Microsoft MVP - Visual Basic

Re: Help Poor Man ! ~~~~

Maximilien7-Mar-07 6:21

Maximilien

7-Mar-07 6:21

What mp3 player ?

songjacky wrote:
That screen have shown "login Window".

your mp3 player ask you for a login ?

Maximilien Lincourt
Your Head A Splode - Strong Bad

Vjys6-Mar-07 18:25

Vjys

6-Mar-07 18:25

Hai..

I am developing an application in VC++ to write data to a pen drive without the help of driver.
Still now i could find the attached device and Iam able to get the device information.Now i had the handle to the device.
Can any help me how to proceed further.
I kept this question in many forums, but i could not get answer.
Reply is like we cant do without driver.
But the driver is going to do every thing with the device handle only.
I want to send data packets( copy folders) to the pendrive.
Could any one suggest me.

Thanks in advance.

Regards
vijay

Re: Regarding data transfer for USB mass storage devices

JudyL_MD7-Mar-07 2:53

JudyL_MD

7-Mar-07 2:53

Vjys wrote:
But the driver is going to do every thing with the device handle only.

Asking the question repeatedly won't change the answer. You need a driver! The line I quoted is where you seem to be missing some understanding. The driver, because it is a driver, has access to a whole lot more than just a handle to the device. It uses all that other stuff that the OS exposes to the driver (and only to a driver) to touch the hardware. User mode programs cannot directly access hardware. Period.

Re: Regarding data transfer for USB mass storage devices

Michael Dunn7-Mar-07 13:56

Michael Dunn

7-Mar-07 13:56

I kept this question in many forums, but i could not get answer.

No, you didn't get the answer you wanted to hear. In fact, some of the replies explained why your answer was wrong. Repeatedly asking the question won't change anything.

--Mike--
Visual C++ MVP Cool | :cool:

LINKS~! Ericahist | PimpFish | CP SearchBar v3.0 | C++ Forum FAQ

Ford, what's this fish doing in my ear?

connect a new circuit to pc

m_mor6-Mar-07 17:47

m_mor

6-Mar-07 17:47

about connect a new circuit to the pc (for example if i want design a circuit for connect a seris of bulbs and i want connect this t the pc and running it with tern on pc)

computer

Re: connect a new circuit to pc

Dave Kreskowiak7-Mar-07 6:16

7-Mar-07 6:16

And the question would be .....??

Dave Kreskowiak
Microsoft MVP - Visual Basic

RF Transceiver

Sean Michael Murphy6-Mar-07 15:44

Sean Michael Murphy

6-Mar-07 15:44

Hey
I have a SAPI application that works great locally. Input via the microphone and output using TTS all work great sitting in front of the PC.

What I'd like to do is operate this application remotely, via a walkie-talkie. Do any of you know if a device exists that could plug into my sound card and receive transmissions and pipe the audio into the mike jack, and take speaker output and transmit it via RF to the walkie-talkie?

I don't even know what that sort of device would be called, so I can't search for it.

Any advice appreciated. Thanks.
Sean

Dave Kreskowiak6-Mar-07 17:29

6-Mar-07 17:29

Nice idea but it as a large flaw. How is the remote machine going to "Push to Talk"? WT's normally can only receive or transmit at any one time, not both at the same time.

I'm sure you'll find some hardware to do it using a full duplex WT, but there remains the issue of having the machine "Push to talk". Or do you want it to transmit continuously, even if the machine has nothing to "say"?

Dave Kreskowiak
Microsoft MVP - Visual Basic

Sean Michael Murphy7-Mar-07 4:27

Sean Michael Murphy

7-Mar-07 4:27

Dave Kreskowiak wrote:
Nice idea but it as a large flaw. How is the remote machine going to "Push to Talk"?

Yeah, I know. I can't help but think this has been solved already though.

Dave Kreskowiak wrote:
I'm sure you'll find some hardware to do it using a full duplex WT, but there remains the issue of having the machine "Push to talk". Or do you want it to transmit continuously, even if the machine has nothing to "say"?

I didn't think walkie-talkies could be full duplex since the mike is so close to the speaker (I imagine a headset type device could be), but I don't really care whether it transmits continuously, as long as it can listen at the same time (full duplex, like you say).

Any idea what that hardware would be called? I'd even settle for a one-way conversation. A device that converted radio to audio and piped it into the mike jack of the sound card.

Thanks again.
Sean

Dave Kreskowiak7-Mar-07 6:16

7-Mar-07 6:16

Sean Michael Murphy wrote:
Yeah, I know. I can't help but think this has been solved already though.

Yeah, by custom hardware. You're most assuredly not going to plug a WT's linein and lineout to a sound card and get away with this. This would be some kind of hardware that would interface with the radio and then plug into the PC somehow. I'd be willing to bet you'd find something like this around the HAM Radio crowd, or possibly even the manufacturer of the radios.

Dave Kreskowiak
Microsoft MVP - Visual Basic

Sebastian Schneider8-Mar-07 2:18

Sebastian Schneider

8-Mar-07 2:18

Actually, you could always use "Lego Mindstorms" or a similar kit to rig something up that physically presses the talk-button on your radio whenever the computer raises a flag.

Actually, a Servo might just do the trick.

Cheers,
Sebastian

--
Contra vim mortem non est medicamen in hortem.

Dave Kreskowiak8-Mar-07 2:33

8-Mar-07 2:33

Possibly, but the question then becomes "are the parts going to last for the life of the application?"

Dave Kreskowiak
Microsoft MVP - Visual Basic

networking

rituparn1-Mar-07 9:03

rituparn

1-Mar-07 9:03

plzz help me tru this....
i m not able to ping 4.2.2.2 successfully---- 2 success / 2 loss---always
i m able to surf all other web pages however getting the problem only in ebay.com
i m confused---tried to powercycle , configured browser , tcp/ip tack clearing -- all done still no go.....it could not be issue with server as i can open the web sites from my neighbours computer.........is it comp issue or ISP or some setting..

thanks in advance....
rituparn.............

RST

Sebastian Schneider2-Mar-07 3:37

Sebastian Schneider

2-Mar-07 3:37

There might be an adaptive firewall, e.g. the first two pings are considered "harmless" and are replied to, the next two are considered an "attack" and silently dropped. Thats one explanation for the ping failure, but it is just a guess. ebay.com could also be blocked by your ISP/company.

Cheers,
Sebastian

--
Contra vim mortem non est medicamen in hortem.

rituparn2-Mar-07 5:05

rituparn

2-Mar-07 5:05

thanks for yr responce...
actually this is my home pc so there is no external security..eg server or router...and plz let me know what is this adptive firewall..is it normal or some thing special...i have been using my comp with same setup since more than one year... on one of the forum i read that it could be issue with ISP subnet setting...could it be ?

Confused | :confused:

RST

Roger Wright5-Mar-07 15:36

Roger Wright

5-Mar-07 15:36

Try pathping. It will try to tracert over an extended time and collect statistics on each leg of the journey. That should help identify where the block is located, though I wish you luck getting anyone to respond if you point it out.

"...a photo album is like Life, but flat and stuck to pages." - Shog⁹

code-frog9-Mar-07 4:44

code-frog

9-Mar-07 4:44

append a parameter that will give you more time to ping. One of the options is the time in milliseconds. Increase it to something like 10 or 30 seconds and see if it succeeds.