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Discussion Groups | TMS320C6x | RTDX with HWI
Technical discussions about the TI C6000 DSPs (including the c62x, c64x and c67x DSPs).
RTDX with HWI - jaleitao2003 - Jul 18 16:43:00 2003
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Hi, I am building a program which captures data from the PCM3003 audio card, by means of HWIs, and sends it to a PC, via JTAG, when 512 samples are available. I am using the TMSC6711 DSP. Do the HWI interfere with the RTDX? When I try to use interrupt- driven RTDX, the program freezes. If I disable the HWI, RTDX works fine. I tried RTDX polling but I do not get the timings right, since I have to transmit 512 samples. Below is an attempt to send the data using RTDX, all at once (1 vector). I also thoughy of sending samples 1-by-1, generating a RTDX_write() for each one, but I guess the performance will be not so good... RTDX_enableOutput(&ochan); for (i=0; i<512; i++) { //message[] is a size 512 buffer RTDX_write(&ochan, message, sizeof(message)); while ( RTDX_writing != NULL ) { #if RTDX_POLLING_IMPLEMENTATION RTDX_Poll(); #endif } } Can anyone give me a help on this? Thank you! Regards, Andre |
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Re: RTDX with HWI - Mike Dunn - Jul 19 0:04:00 2003
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Andre,
Interrupts do affect RTDX. Your code looks similar to the "RTDX
Target Code for Section 1, Lesson 2" of the tutorial. I suggest the
following:
1. Check out the TI tutorials.
2. Read the RTDX chapter in the Help file.
3. Search the 'ti' directory [and subdirectories] for all '.c' files
containing "RTDX_write".
mikedunn
jaleitao2003 <j...@clix.pt> wrote: Hi, |
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RTDX with HWI - jaleitao2003 - Oct 15 11:05:00 2003
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Hi, I am using the c6711 with PCM3003 audio daughter card, cc2.2. I am having some problems with RTDX (XDS510PP): if I enable HWI to get the samples from the daughtercard then I must use the polling implementation on RTDX, which is far much poorer that the interrupt implementation. The data rate is too low and I can't get real-time analysis in good conditions. Moreover, I can't use input from RTDX. All these problems vanish if I disable the HWI for the daughtercard... Can anyone help on this? If anyone has a simple program I would appreciate it very much. I am stuck on this problem from some time now... Regards, Andre Leitao |
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