Problem while running tx_waveforms

GNU Radio
1

Hi all,
When running the example tx_waveforms.cpp on the E100 usrp I get
continuos"sssssssssss" on the terminal
I know that u stands for underrun and o stands for overrun but what does
an “s” mean

Regards,
S. Yassin
Research assistant
DLECS
ECEdepartment

CAIRO university

2

On 04/19/2012 08:55 AM, Sameh Y. wrote:

Hi all,
When running the example tx_waveforms.cpp on the E100 usrp I get
continuos"sssssssssss" on the terminal
I know that u stands for underrun and o stands for overrun but what does an “s”
mean

Upgrade to the latest image that was announced on the list a few weeks
ago. That should clear up the ‘S’ problems.

Philip

3

Dear sir,

When I’m using the image that is created when building UHD with
compatibilty version 9 everything is okay. The problem occurs when I
compile the FPGA code from source using the command “make -f E100 bin”.
After the “generate programming file” is finished successfully, I copy
the output image u1e.bin and then rename it to usrp_e100_fpga_v2.bin and
use it.
Therefore, I still need to what does “S” stands for because I will
modify the FPGA code later not just recopmile.

Regards,
S. Yassin
Research assistant
DLECS

ECE departmentFrom: Philip B. [email protected]

To: Sameh Y. [email protected]
Cc: “[email protected]” [email protected]
Sent: Thursday, April 19, 2012 3:19 PM
Subject: Re: [Discuss-gnuradio] problem while running tx_waveforms

On 04/19/2012 08:55 AM, Sameh Y. wrote:

Hi all,
When running the example tx_waveforms.cpp on the E100 usrp I get
continuos"sssssssssss" on the terminal
I know that u stands for underrun and o stands for overrun but what does an “s”
mean

Upgrade to the latest image that was announced on the list a few weeks
ago. That should clear up the ‘S’ problems.

Philip

4

I think it’s something like a packet sequencing error. I looked it up in
the code at one point but it was a while ago.

5

With tx_waveforms on B100, it starts to print ‘U’ at 6Msps.
But CPU consumption is only in 20% to 25% range.
Its fine at 5Msps and lower.

6

On 04/19/2012 10:28 AM, Sameh Y. wrote:

Dear sir,

When I’m using the image that is created when building UHD with compatibilty
version 9 everything is okay. The problem occurs when I compile the FPGA code
from source using the command “make -f E100 bin”. After the “generate programming
file” is finished successfully, I copy the output image u1e.bin and then rename it
to usrp_e100_fpga_v2.bin and use it.
Therefore, I still need to what does “S” stands for because I will modify the
FPGA code later not just recopmile.

What version of UHD are you using? I have seen the S in “older” UHD’s on
the E100 and cleared the problem up by using the most recent UHD release
(with corresponding FPGA images).

If you are doing custom FPGA work, you should start from the most recent
release.

Philip

7

Dear all,

I’m not using a tag version. I obtained the files using GIT and it is
supposed to be 3.4.0.
I’m also using rate = 2Msps. Should I get the tag version
release_003.004.001.zip?

Regards,
S. Yassin
HW Engineer
DLECS

From: Philip B. [email protected]
To: Sameh Y. [email protected]
Cc: GNURADIO [email protected]
Sent: Thursday, April 19, 2012 5:17 PM
Subject: Re: [Discuss-gnuradio] problem while running tx_waveforms

On 04/19/2012 10:28 AM, Sameh Y. wrote:

Dear sir,

When I’m using the image that is created when building UHD with compatibilty
version 9 everything is okay. The problem occurs when I compile the FPGA code from
source using the command “make -f E100 bin”. After the “generate programming file”
is finished successfully, I copy the output image u1e.bin and then rename it to
usrp_e100_fpga_v2.bin and use it.
Therefore, I still need to what does “S” stands for because I will modify the
FPGA code later not just recopmile.

What version of UHD are you using? I have seen the S in “older” UHD’s on
the E100 and cleared the problem up by using the most recent UHD release
(with corresponding FPGA images).

If you are doing custom FPGA work, you should start from the most recent
release.

Philip

8

ASA,

The problem occured due to the use of wrong source files to generate the
FPGA image. I discovered the problem by using the pre built images
athttp://code.ettus.com/redmine/ettus/projects/uhd/wiki/UHD_build. The
‘S’ problem occured when I used the prebuilt image at 003.004.000. So, I
used the version 003.004.001 and everything is just great.

Regards,
S. Yassin
HW Engineer
DLECS

From: wayne roberts [email protected]
To: Philip B. [email protected]
Cc: Sameh Y. [email protected]; GNURADIO
[email protected]
Sent: Thursday, April 19, 2012 5:47 PM
Subject: Re: [Discuss-gnuradio] problem while running tx_waveforms

With tx_waveforms on B100, it starts to print ‘U’ at 6Msps.
But CPU consumption is only in 20% to 25% range.
Its fine at 5Msps and lower.

On Thu, Apr 19, 2012 at 8:17 AM, Philip B. [email protected]
wrote: