Re: Learning Usb programming in Linux from user space

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hi,

On Thu, Nov 18, 2010 at 02:15:43PM +0530, nidhi mittal hada wrote:
Its a data acquisition ssytem ...
Requirement is like this..I have to work on arm omap arm processor
with linux on it .

I have to acquire data from some interfaces like UART and store that
data through USB interface.OR read it from USB interface

Now most probably it shd be a pendrive on usb connected to board .

So i want to learn how can we store data on a pen drive connected to
usb interface
from use space C program.

you can use a script for that:

#!/bin/sh

mount=$(which mount)
cat=$(which cat)

$mount /dev/sda1 /mnt
$cat /dev/tty1 >> /mnt/data.cap

something like that should be enough from what you describe above.

Now another question ...related to basic concept .....


As i have practiced writing a few block device driver(but just on
virtual memory not on acttual device ) and worked on filesystem code
i was wondering ....
If we have a pendrive acting as a block device with lets say fat32 on it .

Then how do we interact with it
through USb driver or through block device driver

mount the device and use normal read() write() poll() operations.

--
balbi
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