Re: [Discuss-gnuradio] "E" on USRP2 UART

[Leonard Marziliano]

Actually, I have some thing like this on the terminal screen:

UEEEEEEEEEEEEEEEEEEUEEEEEEEEEEEEEEEEEEUEEEEEEEEEEEEEEEEEEEUEEEEEEEEEEEEEEEEEEUEEE                      
EEEEEEEEEEEEEEEEUEEEEEEEEEEEEEEEEEEUEEEEEEEEEEEEEEEEEEEUEEEEEEEEEEEEEEEEEEUEEEEEE                      
EEEEEEEEEEEEUEEEEEEEEEEEEEEEEEEUEEEEEEEEEEEEEEEEEEUEEEEEEEEEEEEEEEEEEUEEEEEEEEEEE                      
EEEEEEEUEEEEEEEEEEEEEEEEEEEUEEEEEEEEEEEEEEEEEEUEEEEEEEEEEEEEEEEEEUEEEEEEEEEEEEEEE                      
EEEUEEEEEEEEEEEEEEEEEEUEEEEEEEEEEEEEEEEEEUEEEEEEEEEEEEEEEEEEEUEEEEEEEEEEEEEEEEEEU                      
EEEEEEEEEEEEEEEEEEUEEEEEEEEEEEEEEEEEEUEEEEEEEEEEEEEEEEEEUEEEEEEEEEEEEEEEEEEUEEEEE                      
EEEEEEEEEEEEEUEEEEEEEEEEEEEEEEEEUEEEEEEEEEEEEEEEEEEUEEEEEEEEEEEEEEEEEEEUEEEEEEEEE                      
EEEEEEEEEUEEEEEEEEEEEEEEEEEEUEEEEEEEEEEEEEEEEEEUEEEEEEEEEEEEEEEEEEU and 
so on..

As you can see, it is very regular.

To put things in context, I'm trying to develop a DVB-S2 Modulator using 
a very fast PC (six cores Xeon Dell, running Ubuntu 10.10) and the USRP2 
using C++ code. I'm not using GNU Radio. So far, I've not been very 
successful in term of getting the system running smoothly in real-time. 
When I look at the signal coming out of the USRP2 , it is very choppy. 
I've optimized a lot of code but still have the choppy issue. I'll 
looking it further but if anybody has any ideas suggestions on this, 
I'll be very happy to hear them !

Thanks,
Leonard

On 06/05/2011 11:04 AM, Leonard Marziliano wrote:
> Hi,
>
> I'm starting to see "E"s on the USRP2 UART output when my application 
> is running. I know that "U" means underrun but not "E"s. Anybody has 
> an idea ?
>
> Thanks
> Leonard


--
Leonard Marziliano, Research Engineer

Communications Research Centre Canada (CRC)
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