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Hello, I use the C6711DSK and the PCM3003 audiocard. I want to do a FIR filter with a sampling frequencyH Khz. I use an hardware interrupt each time the serial port Mcbsp1 receives a data. Between 2 samples, I do my process (read data from the codec, FIR & write data) but the process time is too long. Is the best way to do a filter with this sampling frequency? Thanks |
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Pb with PCM3003
Started by ●July 24, 2003
Reply by ●July 25, 20032003-07-25
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A couple of suggestions-
1. Since you only have around 3000 processor clocks to play with, you might
want to checkout information and examples using EDMA - you are using a chunk of
that in your ISR.
2. Have you looked at the examples in TMS320C6000 Programmers Guide
(SPRU198)?? This might show you how you can reduce your code size.
mikedunn
nadbret <n...@yahoo.fr> wrote: Hello, |
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Reply by ●July 25, 20032003-07-25
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one more suggestion is that you try to load your program and data in L1
RAM (internal RAM)..this will reduce process time .. sandeep -- Sci/Engr 'SC' Communication System Group ISAC, ISRO ph:5083323 Quoting Mike Dunn <>: > A couple of suggestions- > > 1. Since you only have around 3000 processor clocks to play with, you might > want to checkout information and examples using EDMA - you are using a chunk > of that in your ISR. > > 2. Have you looked at the examples in TMS320C6000 Programmers Guide > (SPRU198)?? This might show you how you can reduce your code size. > > mikedunn > > nadbret <> wrote: > Hello, > > I use the C6711DSK and the PCM3003 audiocard. > I want to do a FIR filter with a sampling frequencyH Khz. > I use an hardware interrupt each time the serial port Mcbsp1 receives > a data. > Between 2 samples, I do my process (read data from the codec, FIR & > write data) but the process time is too long. > Is the best way to do a filter with this sampling frequency? > > Thanks > > _____________________________________ > Note: If you do a simple "reply" with your email client, only the author of > this message will receive your answer. You need to do a "reply all" if you > want your answer to be distributed to the entire group. > > _____________________________________ > About this discussion group: > > To Join: Send an email to > > To Post: Send an email to > > To Leave: Send an email to > > Archives: http://www.yahoogroups.com/group/c6x > > Other Groups: http://www.dsprelated.com > ">http://docs.yahoo.com/info/terms/ |
