On Wed, Mar 14, 2012 at 10:42 AM, Stefan Ott <o...@iam.unibe.ch> wrote:
> Hey list > > I managed to build gnuradio 3.5.1 and (almost) got it working on the > USRP E110. However, when I try to run uhd_rx_cfile.py (with > --samp-rate 10e6 -f 97.7e6) it segfaults. You will find the log below. > So there is essentially no chance the E110 can record to Flash at 10Msps. It probably won't sustain flash writes at 500ksps. Try a lower sample rate, or a small number of samples written to a tmpfs instead. That said, it shouldn't segfault, even at high sample rates. Does a lower rate work OK? --n > > The system that I'm running on the USRP has been compiled from scratch > and is using Linux 3.1.10 with the USRP driver from > https://github.com/balister/linux-omap-philip/commit/9c409f8e4aad357b09c > with uClibc 0.9.32 and AFAICT the latest versions of all the gnuradio > dependencies. > > Does anyone have a clue about what I might be doing wrong? > > > ---------- dmesg ---------- > usrp_e open called, use_count = 0 > rx_dma->ch 0 > tx_dma->ch 1 > usrp: leaving open > Unable to handle kernel NULL pointer dereference at virtual address > 000004fc > pgd = c3440000 > [000004fc] *pgd=86c88831, *pte=00000000, *ppte=00000000 > Internal error: Oops: 817 [#2] > Modules linked in: > CPU: 0 Tainted: G D (3.1.10 #1) > pc : [<c01392c0>] lr : [<401d137c>] psr: 80000013 > sp : c4fdbeb0 ip : 00000000 fp : c4fdbef4 > r10: 00000000 r9 : c4fda000 r8 : c000d9c4 > r7 : dc490ac0 r6 : 00000003 r5 : 00000001 r4 : be9fbfd0 > r3 : c4fdbeb8 r2 : c0342bd0 r1 : 000004fc r0 : 00000000 > Flags: Nzcv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user > Control: 10c5387d Table: 83440019 DAC: 00000015 > Process python (pid: 1595, stack limit = 0xc4fda2e8) > Stack: (0xc4fdbeb0 to 0xc4fdc000) > bea0: 000004fc 00000001 00000000 > 0032e9c8 > bec0: 00000028 401bb7e4 00329dc0 00000011 42156824 00021a20 401048b4 > 401d137c > bee0: c6d12228 be9fbfd0 c4fdbf04 c4fdbef8 c01393f8 c0139224 c4fdbf7c > c4fdbf08 > bf00: c0090afc c0139378 40908178 003371c8 c03123b0 c4fda000 c4fda000 > 00000000 > bf20: ffffffff 00000000 c4fdbf5c c4fdbf38 c0046f68 c0008c60 ffffffff > df8a801c > bf40: df861140 c6d990c0 c03123b0 c4fda000 c4fdbf74 c4fdbf60 00000003 > 40307522 > bf60: be9fbfd0 dc490ac0 c000d9c4 c4fda000 c4fdbfa4 c4fdbf80 c0090bb0 > c0090658 > bf80: 003371c8 00000000 be9fbfd0 40307522 00000003 00000036 00000000 > c4fdbfa8 > bfa0: c000d840 c0090b7c be9fbfd0 40307522 00000003 40307522 be9fbfd0 > 00000000 > bfc0: be9fbfd0 40307522 00000003 00000036 be9fd88c 0032e8f0 4219f660 > be9fd500 > bfe0: 4219f938 be9fbe98 420ef69c 40180b9c 60000010 00000003 6d726f66 > 0228745f > Backtrace: > Function entered at [<c0139218>] from [<c01393f8>] > r5:be9fbfd0 r4:c6d12228 > Function entered at [<c013936c>] from [<c0090afc>] > Function entered at [<c009064c>] from [<c0090bb0>] > r9:c4fda000 r8:c000d9c4 r7:dc490ac0 r6:be9fbfd0 r5:40307522 > r4:00000003 > Function entered at [<c0090b70>] from [<c000d840>] > r7:00000036 r6:00000003 r5:40307522 r4:be9fbfd0 > Code: e5b3c004 e5900048 e0811105 e2855001 (e780c001) > ---[ end trace 689a22803bf4f530 ]--- > usrp_e release called > Waiting for DMA to become inactive > Freeing gpio irq's > Freeing DMA channels > ---------- end ---------- > > > cheers > -- > Stefan Ott > Communication and Distributed Systems > Institute of Computer Science and Applied Mathematics > University of Bern > > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >
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