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Discussion Groups | TMS320C54x | question about C5409 multiframe mode
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).
question about C5409 multiframe mode - Li Hao - Jun 19 17:54:00 2002
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I am trying to get C5409 McBSP port0 and DMA channel 0 and 1 working in Multiframe mode. There are two isrs, rx and tx. Basically, frame sync comes every 125us, after McBSP fills and empties rx and tx DMA buffers, isrs are invoked. I have a dilemma right now, it seems that I have to reset McBSP in the isrs to get the whole operation going again. It seems to me that if I don't do the reset, McBSP cannot wake up on the next frame sync. So does anyone have any similar experience? If you don't reset, what do you need to do? Thanks. Li |
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