DMA and UART

cancel
Showing results for 
Search instead for 
Did you mean: 

DMA and UART

129 Views
lpcware
NXP Employee
NXP Employee
Content originally posted in LPCWare by Scribe on Tue Oct 02 05:42:01 MST 2012
Hi guys,

Not being all to aware of how data exchange takes place on the AHB Lite bus, would I be safe to assume that a DMA from UART to memory has completed if the UARTs buffers are empty? Is there a chance I'll read memory whilst the DMA is still in possession of data?

Many thanks
Labels (1)
0 Kudos
1 Reply

70 Views
lpcware
NXP Employee
NXP Employee
Content originally posted in LPCWare by jdurand on Tue Oct 02 08:58:30 MST 2012
You can use the barrier instructions to make sure everything is done.
0 Kudos