<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
</head>
<body>
Hi,<br>
<br>
i try to transmit 2.48 ghz radio packets (beacons) at a fixed time
interval (e.g. every 1 s) via hackrf using the osmocom sink in
gnuradio. Without exception, the beacons are all received by my
sniffer "golden device" hardware, but burst.<br>
<br>
It seems that the packets are only transferred via USB to the hackrf
device hardware when the buffer with the fixed BUF_LEN 262144
(32*16*512) is completely filled. For my setup this are e.g. 18
beacon frames, which are transmitted as burst. When I look at the
USB interface, I can see this burst of data every 18 seconds in a
full USB request block (URB) of size 262144 byte. All other URBs
(also of size 262144 - every approx. 200us) transferred via USB are
filled with zeros only. So this burst behavior should be caused by
gnuradio.<br>
<br>
How can I achieve that the complex data of the osmocom sink's input
is immediately (with the next URB) transferred to the hackrf
hardware? Am I missing any options of the GRC module?<br>
<br>
Thank You in advance!<br>
<br>
Regards,<br>
Sebastian<br>
<div class="moz-signature">-- <br>
<font face="monospace" color="Gray">
__________________________________________________________<br>
<br>
Sebastian Boehm<br>
Brandenburg University of Technology Cottbus - Senftenberg<br>
Computer Networks Communication Systems Group<br>
<br>
E-Mail: <a href="mailto:Sebastian.Boehm@b-tu.de">sebastian.boehm@b-tu.de</a><br>
<br>
P.O. Box: 10 13 44<br>
D-03013 Cottbus<br>
GERMANY<br>
</font></div>
</body>
</html>