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From: | Ron Hall |
Subject: | [Discuss-gnuradio] FPE with FM Rcvr |
Date: | Thu, 31 Mar 2011 04:31:17 +0000 |
Working the following issue...any ideas? System: Ubuntu 10.10, Gnuradio 3.3.0, uhd (Mar 2011), USRP2, TVRX Using the attached grc model results in a floating point exception: gnuradio_core_runtime.py (1476) top_block.py (96) top_block_gui.py (72) USRP2_WX.py (326) General output in GRC: Generating: "/home/jim/radiostuff/refs/gen/USRP2_WX.py" Executing: "/home/jim/radiostuff/refs/gen/USRP2_WX.py" linux; GNU C++ version 4.4.5; Boost_104200; UHD_003.000.000-3235792 Current recv frame size: 1476 bytes Current send frame size: 1472 bytes Making transport for DSP0... Current recv sock buff size: 50000000 bytes Making transport for DSP1... Current recv sock buff size: 50000000 bytes Making transport for ERR0... mboard0 MIMO master Warning: The hardware does not support the requested RX sample rate: Target sample rate: 3.200000 MSps Actual sample rate: 3.225806 MSps #Betting this is the culprit but haven't completed a trace >>> gr_fir_ccc: using SSE >>> Done I'm looking through the UHD spec to see if there is a function that easily resolves this but nothing has jumped out, yet. It might be a memory issue. An attempt to sample at the 6Mz limit with the TVRX (board responds with ~5.88...) results in gr_buffer:allocate_buffer: failed to allocate buffer of size 18760, which points to an installation issue that make check should have handled...a reinstall and closer scrutiny of the output should highlight any neglected warnings/errors. |
USRP2_WX.grc
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USRP2_WX.py
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