LPC MicrocontrollersのトピックCan LPC18xx do DMA transfer from SRAM (USB) to external SDRAM (EMC) ?

Can LPC18xx do DMA transfer from SRAM (USB) to external SDRAM (EMC) ?

lpcware — Wed, 15 Jun 2016 18:18:49 GMT

Content originally posted in LPCWare by MX21 on Tue Jan 26 11:35:59 MST 2016
Can LPC18xx do DMA transfer from SRAM (USB) to external SDRAM (EMC) ?

There are no examples and the only time memory to memory DMA is mentioned in the user manual is to write to the GPIO ports.

If so, how do you setup a DMA transfer to EMC?

Re: Can LPC18xx do DMA transfer from SRAM (USB) to external SDRAM (EMC) ?

lpcware — Wed, 15 Jun 2016 18:18:50 GMT

Content originally posted in LPCWare by mc on Tue Jan 26 15:06:12 MST 2016
Hi MX21,
LPCopen has GPDMA speed example. It transfers data from memory to memory. You can use this example. Please see link below
http://www.lpcware.com/system/files/lpcopen_2_12_lpcxpresso_keil_mcb_1857.zip

Re: Can LPC18xx do DMA transfer from SRAM (USB) to external SDRAM (EMC) ?

lpcware — Wed, 15 Jun 2016 18:18:50 GMT

Content originally posted in LPCWare by MX21 on Tue Jan 26 16:49:49 MST 2016
Perfect. That did the trick. I now have DMA running to my SDRAM.

Thanks