Thanks Marcus.
It helped to resolve the error. But UHD consistently prints "L" in the
output.
Would you what DRAM FIFO block actually does?
Regards
On 9/7/21 14:41, Marcus D. Leech wrote:
On 07/09/2021 07:40 AM, Armin Ghani wrote:
Dear community
I've been trying to make a fully synchronous multi USRP transmitter
in GNURadio v3.8.2.0 and UHD v3.15.0.0.
In order to have a common clock and time between 2 USRPs, an
octoclock is also used.
when trying to run a flowgraph which consists one multi_usrp sink
block that is connected to a signal source in GNURadio and running
the flowgrapth I get this error:
Executing: /usr/bin/python3 -u
/home/.../Documents/gnuradio-tests/octoclock_test.py
[INFO] [UHD] linux; GNU C++ version 9.3.0; Boost_107100;
UHD_3.15.0.HEAD-0-gaea0e2de
[INFO] [X300] X300 initialization sequence...
[INFO] [X300] Maximum frame size: 7972 bytes.
[WARNING] [X300] For the 192.168.30.2 connection, UHD recommends a
receive frame size of at least 8000 for best
performance, but your configuration will only allow 7972.This may
negatively impact your maximum achievable sample rate.
Check the MTU on the interface and/or the recv_frame_size argument.
[INFO] [X300] Maximum frame size: 7972 bytes.
[WARNING] [X300] For the 192.168.50.2 connection, UHD recommends a
receive frame size of at least 8000 for best
performance, but your configuration will only allow 7972.This may
negatively impact your maximum achievable sample rate.
Check the MTU on the interface and/or the recv_frame_size argument.
[INFO] [X300] Radio 1x clock: 200 MHz
[INFO] [0/DmaFIFO_0] Initializing block control (NOC ID:
0xF1F0D00000000000)
[INFO] [X300] Radio 1x clock: 200 MHz
[INFO] [0/DmaFIFO_0] BIST passed (Throughput: 1308 MB/s)
[INFO] [0/DmaFIFO_0] BIST passed (Throughput: 1312 MB/s)
[INFO] [1/DmaFIFO_0] Initializing block control (NOC ID:
0xF1F0D00000000000)
[INFO] [1/DmaFIFO_0] BIST passed (Throughput: 1316 MB/s)
[INFO] [1/DmaFIFO_0] BIST passed (Throughput: 1304 MB/s)
[INFO] [0/Radio_0] Initializing block control (NOC ID:
0x12AD100000000001)
[INFO] [1/Radio_0] Initializing block control (NOC ID:
0x12AD100000000001)
[INFO] [0/Radio_1] Initializing block control (NOC ID:
0x12AD100000000001)
[INFO] [1/Radio_1] Initializing block control (NOC ID:
0x12AD100000000001)
[INFO] [0/DDC_0] Initializing block control (NOC ID: 0xDDC0000000000000)
[INFO] [1/DDC_0] Initializing block control (NOC ID: 0xDDC0000000000000)
[INFO] [0/DDC_1] Initializing block control (NOC ID: 0xDDC0000000000000)
[INFO] [1/DDC_1] Initializing block control (NOC ID: 0xDDC0000000000000)
[INFO] [0/DUC_0] Initializing block control (NOC ID: 0xD0C0000000000000)
[INFO] [1/DUC_0] Initializing block control (NOC ID: 0xD0C0000000000000)
[INFO] [0/DUC_1] Initializing block control (NOC ID: 0xD0C0000000000000)
[INFO] [1/DUC_1] Initializing block control (NOC ID: 0xD0C0000000000000)
[INFO] [MULTI_USRP] 1) catch time transition at pps edge
[INFO] [MULTI_USRP] 2) set times next pps (synchronously)
thread[thread-per-block[6]: <block usrp_sink(1)>]: RuntimeError:
Multiple sampling rates downstream of TX Terminator 0: RuntimeError:
Node 0/DUC_0 specifies 1e+06, node 0/DUC_1 specifies 390625.
What happens if you use the "skip_dram=1" argument in the device argument?
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--
Armin Ghani
Research Engineer | Communication Systems Division (CSD)
[email protected] <mailto:[email protected]>| +34 93 645 29 08 (2143)
Centre Tecnològic de Telecomunicacions de Catalunya (CTTC)
Av. Carl Friedrich Gauss, 7 - Edifici B4 - PMT
08860 - Castelldefels (Barcelona, Spain)
www.cttc.cat
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