Nitin,
Gadget Serial is typically used for console, slow speed serial
applications and has restrictions from the perspective of max throughput that
can be achieved.
You can write your own application over GadgetFS. In this way you
could achieve the required throughput as USB
Gadget.
Regards
Swami
PSP downloads at :
http://software.ti.com/swcoe/intranet/reports/pds/PSP_releases.php
Office : +91-80-25048629
________________________________
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Nitin Joshi
Sent: Thursday, June 19, 2008 3:45 PM
To: [email protected]
Subject: USB Gadget Serial - Data rate?
Hi all,
We have a custom board containing DM6446 DSP, and we need to transfer the data
over USB in both directions.
Meaning, my PC application will act as HOST and DM6446 EVM configured as a
Gadget Device.
Initially HOST will send some configuration data which DM6446 has to receive
and configure other peripherals say FPGA
At the end of some operation, the hardware will store the huge data(around 2GB)
into the available DDR2 memory,
Which I need to transfer to host using USB2.0
I have 2 queries here
1) Which type of Gadget device should I use? I mean USB Gadget Ethernet / File
backed storage/Serial
2) I tried to Configure EVM as Gadget Serial and the Data rate is < 1 MB which
is worst for me.
I have used default MVLinux401 came along with DVEVM. If I apply the latest
LSP patch from TI,
Will it make any difference in the performance?
3) Is there anybody who has used Gadget serial and what is the max data rate
achieved?
Need your support!
Thanks and Regards
Nitin Joshi
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