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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).
54x DMA Initialization - Leigh Wells - Jun 23 21:00:00 1999
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Hi, all. I'm setting up the DMA for use with the McBSP on the '5410. I have set it up similar to how it is illustrated in SPRU302 pg. 3-50. Using the emulator and DMA channel 1, the DRR1_1 gets loaded with data from an A/D I have implemented, but I can't get the data to move from there. I have specified a 32K buffer starting at 8000h, but these locations don't change when I run it. How should I get the DMA started? Is there a magic switch somewhere that I haven't come across yet? Any help would be appreciated. If someone out there has their DMA running I would appreciate maybe a sample of asm code. Thanks Leigh Wells Electrical Engineer Acoustic Positioning Research |
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Re: 54x DMA Initialization - Torgeir Jakobsen - Jun 25 8:30:00 1999
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Hi
Maybe you have forgotten to set up the DMA to trigger on
receive event.
I have also a program where I want to use the DMA to save
the data from a ADC, but I have not started the testing of this program on my
hardware. So far, I have only simulated the code in
Code Composer Simulator, and this simulator does not support
the memory mapped peripheral registers. So, I guess I will meet the same problem
as you when I start testing this program on a DSP.
I see that you refer to SPRU302. Where have you found this
document ? I have only got some
preliminary documentation describing the DMA and the MCBSP.
I did a search on the Texas
hompage today, but I could not find this
document.
Best regards
Torgeir Jakobsen
e-mail: t...@aanderaa.no
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