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From: | Elvis Dowson |
Subject: | [Discuss-gnuradio] UHD driver/firmware stability |
Date: | Thu, 22 Jul 2010 13:34:47 +0400 |
Hi Josh, Is the UHD driver/firmware stable? Or are the current versions still under development? Test case 01: Incorrect sample rate value (e.g. 100k) raises an exception, subsequent attempts with correct values do not get a response from the USRP2. Regarding the previous crash when passing incorrect sample rate values, I tried to replicate the crash again, with 100k sample rate setting, and it terminates. terminate called after throwing an instance of 'std::runtime_error' what(): No devices found for -----> addr: 192.168.10.2 However, after you set it back to a valid value of say 100M, it still doesn't work, requiring a full reboot of the USRP2. Perhaps this was because of an unhandled exception? Test case 02: Setting the correct sample rate (e.g. 25M) works once, after that it doesn't work. Attempt #1 - 25M sample rate setting Generating: "/home/elvis/Desktop/grc-examples/top_block.py" Executing: "/home/elvis/Desktop/grc-examples/top_block.py" Current recv sock buff size: 50000000 bytes Current send sock buff size: 50000000 bytes Using: WBX TX (0x0053) Using: WBX RX (0x0052) RX samples per packet: 362 TX samples per packet: 363 Recv pirate num frames: 33967 gr_block_executor: source <gr_block uhd simple source (1)> produced no output. We're marking it DONE. >>> Done Attempt # 2 - 25M sample rate setting Generating: "/home/elvis/Desktop/grc-examples/top_block.py" Executing: "/home/elvis/Desktop/grc-examples/top_block.py" terminate called after throwing an instance of 'std::runtime_error' what(): No devices found for -----> addr: 192.168.10.2 Test case 03: Setting the maximum USRP2 sample rate (100M) doesnt work, it switches to 25Msps. Generating: "/home/elvis/Desktop/grc-examples/top_block.py" Executing: "/home/elvis/Desktop/grc-examples/top_block.py" Current recv sock buff size: 50000000 bytes Current send sock buff size: 50000000 bytes Using: WBX TX (0x0053) Using: WBX RX (0x0052) RX samples per packet: 362 TX samples per packet: 363 Recv pirate num frames: 33967 The hardware does not support the requested sample rate: Target sample rate: 100.000000 MSps Actual sample rate: 25.000000 MSps gr_block_executor: source <gr_block uhd simple source (1)> produced no output. We're marking it DONE. Best regards, Elvis Dowson |
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