Hello Clive One,
Your link doesn't work for me - do you have an updated link or maybe it is posted somewhere else?
The particular part I have does have an internal USB peripheral; but the design I am using has external USB attached to GPIO (FIFO); would like to be able to DMA that as an 8-bit register to/from internal SRAM.
In this case would have to be async unless I can use one of the control signals as a sync pulse; which may be possible.
Thanks In Advance,
Clive's link isData transfer from GPIO port to RAM buffer using DMA upon receiving a trigger signal on the timer capture input channel.
Note, that there is a significant difference between DMAs in F2/F4/F7 and F1/F0/L0/L1/L4; and also there's a difference in placing the GPIOs in the buses system, the significantly differing being F1 and L0 (and, of course, H7, which is another world on its own). As Clive said, the RM and the DMA ANs (AN4101/AN4031 and AN4666 which deals specifically with your question) are your friends.
Thanks for the quick help Jan, yes, on this particular processor; since they did an async I/F - will be difficult - still; nice to see how you guys have been dealing with it.
Thanks Again; and Have A Great Weekend!
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