DMA and UART

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DMA and UART

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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
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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.
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