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Discussion Groups | TMS320C54x | RTDX problem
Technical discussions about the TI C54x DSPs (including the c5401, c5402, c5402a, c5404, c5407, c5409, c5409a, c5410, c5410a, c5416, c5420, c5421, c5441, c549, c5470 and c5471).
RTDX problem - ajs_edwards_uk - Feb 28 14:14:00 2002
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I am using DSP/BIOS with the RTDX LOG module to transfer debug messages. No stdio / breakpoints are in use. Presently the main functionality of my program is to take 64 samples from the codec and perform an FFT. The problem is that part of the way into the sampling, something is interrupting the process and samples are being missed. If the RTDX enable box is unchecked, then the sampling is not interrupted. I have adjusted the host refresh rates in the RTA control properties in CCS but this has no effect. I am not sure what could be causing the problem, I have tried putting a delay(1000) just before the sampling loop but the delay does not happen! Anyone experienced this? Andrew |
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Re: RTDX problem - Jeff Brower - Mar 1 3:10:00 2002
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Andrew- You need to find out where enabling RTDX is changing your source code. Identify that and you will probably be able to see what is going on. Another suggestion is to re-enable interrupts inside your sampling ISR, if you have not already done so. This *may* allow RTDX and your analog I/O to co-exist, depending on amount of data being transferred, how often, etc. Jeff Brower DSP sw/hw engineer Signalogic On Thu, 28 Feb 2002, "ajs_edwards_uk" <> wrote: >I am using DSP/BIOS with the RTDX LOG module to transfer debug >messages. No stdio / breakpoints are in use. > >Presently the main functionality of my program is to take 64 samples >from the codec and perform an FFT. The problem is that part of the >way into the sampling, something is interrupting the process and >samples are being missed. > >If the RTDX enable box is unchecked, then the sampling is not >interrupted. I have adjusted the host refresh rates in the RTA >control properties in CCS but this has no effect. > >I am not sure what could be causing the problem, I have tried putting >a delay(1000) just before the sampling loop but the delay does not >happen! > >Anyone experienced this? > >Andrew |
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