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From: | Marcus Müller |
Subject: | Re: [Discuss-gnuradio] Using USRP Clock for Timers |
Date: | Wed, 8 Jun 2016 22:30:05 +0200 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.6.0 |
Hi Devin, this won't work out for the simple reason that timed commands happen in the FPGA on the USRP, and C++ happens in your PC, and the coupling between both is loose at best – there's always some random latency bus (network, USB,…) between the USRP and the host, and hence, these two clocks never agree on how fast time progresses, or how late it actually is. Now, in my experience, things like these work out if one approaches them differently; could you hence explain what you need to be called, and why that has to happen at a specific "radio time" (as opposed to "CPU time")? Best regards, Marcus On 08.06.2016 22:22, devin kelly wrote:
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