Re: Accelent USB drivers; modify and compile for iPaq 4155

From: A.B. (someone_at_somewhere.com)
Date: 04/28/04 

Date: Wed, 28 Apr 2004 10:06:25 -0400

The cypress microcontroller is the host and I'm intending for it to push
data to the iPaq.

My understanding is that to get data sent from the iPaq to the host I'd need
to have the buffer filled in the iPaq and I'd write the firmware to include
regular polling to see if the microcontroller needs to receive. But that is
the least of my concern right now...

I just want to get bytes from my external hardware into my eVC++ app.

I read part of the USB spec and the microcontroller actually takes care of
the 1ms frames automatically, if I have bytes ready or not, as well as other
details.

"Dean Ramsier" <dramsiernospam@accelentnospam.com> wrote in message
news:e7BFH$RLEHA.3012@tk2msftngp13.phx.gbl...
> Does the 4155 have a USB host port? Normally, the USB on a PPC device is
> USB function, and works with Microsoft ActiveSync. It wouldn't be able to
> communicate with a HID device. Also, the USB function port is the slave
in
> these scenarios, it isn't going to be used to get data from another
device.
>
> If it has USB OTG or USB host, it would be possible for the Ipaq to be in
> control of communications. But it might be more work than you are hoping
> for...
>
> --
> Dean Ramsier - eMVP
> Accelent Systems
> http://www.accelent.com
>
>
> "A.B." <someone@somewhere.com> wrote in message
> news:WPSdnfRfV_7JnRLdRVn-uQ@comcast.com...
> > Since the microcontroller takes care of all the low-level USB details,
and
> I
> > just give it bytes to transfer, I was hoping that I could use generic
HID
> > functions (I'll configure the microcontroller to be an HID device) to
pick
> > up the bytes and let my application process them.
> >
> > I'm hoping that there are generic HID functions available to me in eVC++
> > since I don't have a month to learn how to build a driver.
> >
> > Alex.
> >
> > "Robert Magyar" <anonymous@discussions.microsoft.com> wrote in message
> > news:2AD2BC03-3E99-421F-9723-2829446472A5@microsoft.com...
> > > Alex,
> > >
> > > While the USB goal is to easly connect devices, USB devices require a
> fair
> > amount of design and software to work.
> > >
> > > You should review the ARCHITECTURAL OVERVIEW chapter and USB DATA FLOW
> > MODEL chapter in the USB 1.1 Spec so you plan out your design. The USB
> spec
> > is online at:
> > > http://www.usb.org/developers/docs/
> > >
> > > Robert
> >
> >
>
>

Relevant Pages

  • Re: Connecting USB thumb drive to Ipaq
    ... Just because a device connects via USB to your PC doesn't mean it ... There is a CF card available ... that will ad a host port to your device. ... and your IPAQ is not a host. ...
    (microsoft.public.pocketpc)
  • ieee1394 and fbdev oops in 2.6.3rc2
    ... Found UniNorth PCI host bridge at 0xf0000000. ... Firmware bus number: 0->0 ... PMU driver 2 initialized for Core99, ... ohci_hcd 0001:02:08.0: new USB bus registered, ...
    (Linux-Kernel)
  • Re: External drives not installing or working properly on USB
    ... thanks for clarifying the setup of the USB host controllers. ... As you have 5 host ports, ... operating system to recognise the four additional 'drives'. ...
    (microsoft.public.windowsxp.general)
  • Re: question for USB isochronous I/O (input)- massive corruption issue
    ... My device is a USB audio device, ... > host memory corruption issues when my USB driver has not fed the host ... > controller with enough input URBs. ... > make sure to keep the host controller well supplied with input URBs, ...
    (microsoft.public.development.device.drivers)
  • Re: assessing winusb potential
    ... I am now pouring over a USB book but the issue is still not clear. ... What prevents the host from ... Please do not send e-mail directly to this alias. ... able to install downlevle (IIRC, ...
    (microsoft.public.development.device.drivers)