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I need to format and send a message buffer utilizing the EDMA and McBSP of the 6416. Here is the catch: I cannot use TI's Chip Support Library. I have configured the McBSP/EDMA/Timer writing directly to the registers (the old fashioned way!). However, I can't seem to see the data from DXR0 of the McBSP. I am probing the pin and writing directly to DXR0 but no data. Has anyone ever done this with a C6000 chip? Seems like TI pushes the CSL and we cannot use it, this is non-negotiable. Any assistance is greatly appreciated. |
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Format and send message using McBSP/EDMA
Started by ●November 15, 2004
Reply by ●November 16, 20042004-11-16
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Nuno wrote: > > > I need to format and send a message buffer utilizing the EDMA and > McBSP of the 6416. Here is the catch: I cannot use TI's Chip > Support Library. I have configured the McBSP/EDMA/Timer writing > directly to the registers (the old fashioned way!). However, I > can't seem to see the data from DXR0 of the McBSP. I am probing the > pin and writing directly to DXR0 but no data. Has anyone ever done > this with a C6000 chip? Seems like TI pushes the CSL and we cannot > use it, this is non-negotiable. > > Any assistance is greatly appreciated. Hi Nuno, I'm using McBSP on C6713 with CSL. I think it must be possible by writing directly to the registers, after all that's the only way CSL can do it. Although I wonder why you cannot use CSL? This is the order in which I do it: - configure EDMA - enable EDMA channel interrupt - configure McBsp - start McBsp sample rate generator - wait a while - enable McBSP rx/tx - enable McBSP frame sync - enable EDMA channel I'm using McBSP as UART. There is a spra633 which I used as a starting point. HTH Gustl |
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Reply by ●November 16, 20042004-11-16
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Nuno, Did you have a look at this document? Are you following all these steps. http://focus.ti.com/lit/an/spra488c/spra488c.pdf Hope this helps Tarang On Tue, 16 Nov 2004 08:06:20 +0100, Bernhard 'Gustl' Bauer <> wrote: > > Nuno wrote: > > > > > > > I need to format and send a message buffer utilizing the EDMA and > > McBSP of the 6416. Here is the catch: I cannot use TI's Chip > > Support Library. I have configured the McBSP/EDMA/Timer writing > > directly to the registers (the old fashioned way!). However, I > > can't seem to see the data from DXR0 of the McBSP. I am probing the > > pin and writing directly to DXR0 but no data. Has anyone ever done > > this with a C6000 chip? Seems like TI pushes the CSL and we cannot > > use it, this is non-negotiable. > > > > Any assistance is greatly appreciated. > > Hi Nuno, > > I'm using McBSP on C6713 with CSL. I think it must be possible by > writing directly to the registers, after all that's the only way CSL can > do it. Although I wonder why you cannot use CSL? > > This is the order in which I do it: > - configure EDMA > - enable EDMA channel interrupt > - configure McBsp > - start McBsp sample rate generator > - wait a while > - enable McBSP rx/tx > - enable McBSP frame sync > - enable EDMA channel > > I'm using McBSP as UART. There is a spra633 which I used as a starting > point. > > HTH > > Gustl > > > _____________________________________ > 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 > > Yahoo! Groups Links |
