lpcware

DMA transfer from register PIN0 or MPIN0 to RAM on 824 chip

Discussion created by lpcware Employee on Jun 15, 2016
Latest reply on Jun 18, 2016 by lpcware
Content originally posted in LPCWare by ntil on Sun May 08 04:42:05 MST 2016
Good day all.
Can DMA make transfers from PIN0 or MPIN0 registers to SRAM on 824 chip ?
When I try it, i got DMA error.
Other memory-to-memory or UART-to-memory transfers works fine..
It looks like not allowed to transfer with DMA from any register? only specific (SPI,UART, etc)..
but "LPC82x User manual" tells "The source and destination end addresses, as well as the link to the next descriptor are
just memory addresses that can point to any valid address on the device."
So can I read with DMA any register or only specific?
Thanks.

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