Hi,
Regarding the above issue, I was checking the USB- Generic driver,
And I tried the following things and found my data loss issue is fixed.
change point
>> In usb_serial_probe() function in usb-serial.c
/* set up the endpoint information */
for (i = 0; i < num_bulk_in; ++i
On Fri, Aug 07, 2015 at 07:26:15PM +0900, arun k wrote:
> Hi,
>
> I am stuck with the above issue,
> I have some doubts regarding USB - Generic driver
> 1. Could you please explain me why USB - Generic driver is slow ?
Because it was designed that way, it is not for high-speed data
throughput at
On 08/06/2015 02:42 AM, arun k wrote:
> / # lsusb -v
> Bus 002 Device 006: ID 045b:0218
> Bus 001 Device 001: ID 1d6b:0002
> Bus 002 Device 001: ID 1d6b:0001
> Bus 003 Device 001: ID 1d6b:0002
> Bus 004 Device 001: ID 1d6b:0003
>
> In this my device is
> Bus 002 Device 006: ID 045b:0218
I have no
Hi,
I am stuck with the above issue,
I have some doubts regarding USB - Generic driver
1. Could you please explain me why USB - Generic driver is slow ?
2. Now I am try to study USB - Generic driver implementation , I am
confused with the function usb_serial_generic_read_bulk_callback() ,
could yo
On 08/04/2015 11:57 PM, arun k wrote:
>> Ok, but does the sending device know how to process in-band software flow
>> control
>> and is it set up to respond properly?
>
> I am not sure about this. I need to check this.
>
>> Also, I doubt software flow control is going to work @ 4Mbaud line rate.
-- Forwarded message --
From: arun k
Date: Wed, Aug 5, 2015 at 12:57 PM
Subject: Re: USB - Generic Serial device : Unable to read more than 4095 bytes
To: Peter Hurley
Cc: Greg KH , linux-usb@vger.kernel.org
> Ok, but does the sending device know how to process in-band softw
On 08/04/2015 10:00 PM, arun k wrote:
> I enabled software flow control like below
>
> tty.c_iflag |= (IXON | IXOFF | IXANY);
Ok, but does the sending device know how to process in-band software flow
control
and is it set up to respond properly?
Also, I doubt software flow control is going to w
I enabled software flow control like below
tty.c_iflag |= (IXON | IXOFF | IXANY);
But I still having the data loss issue.
Regards
Arun
On Wed, Aug 5, 2015 at 12:59 AM, Peter Hurley wrote:
> On 08/03/2015 10:47 PM, arun k wrote:
>> Thank you for the reply
>>
The tty layer is limiting you,
On 08/03/2015 10:47 PM, arun k wrote:
> Thank you for the reply
>
>>> The tty layer is limiting you, just keep reading in a loop until you
>>> run out of data, you should not ever expect to read a specific number of
>>> bytes from a tty device at a time, the read call will tell you the
>>> number
Thank you for the reply
>> The tty layer is limiting you, just keep reading in a loop until you
>> run out of data, you should not ever expect to read a specific number of
>> bytes from a tty device at a time, the read call will tell you the
>> number that was read properly.
I tried this method b
On Mon, Aug 03, 2015 at 04:44:07PM +0900, arun k wrote:
> Hi ,
>
> I have a trouble with using usb serial generic device.
> I am using USB - Generic Serial driver for communicating with my usb
> device and my embedded device.
Please don't use the "generic" driver, it's slow and not the best to
u
On 08/03/2015 03:44 AM, arun k wrote:
> Hi ,
>
> I have a trouble with using usb serial generic device.
> I am using USB - Generic Serial driver for communicating with my usb
> device and my embedded device.
> My usb device sending data at a rate of 409600 bytes/sec, and in host
> side applicatio
Hi ,
I have a trouble with using usb serial generic device.
I am using USB - Generic Serial driver for communicating with my usb
device and my embedded device.
My usb device sending data at a rate of 409600 bytes/sec, and in host
side application I tried to read 16384 bytes in one read. But the r
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