DMA data from GPIO to SDRAM

[lpcware]

Content originally posted in LPCWare by Max Chen on Thu May 28 02:30:52 MST 2015
Hi,
I want to DMA data from GPIO to SDRAM, but when I read the UM10503 Rev. 1.9 — 18 February 2015 page 20 fig 3, there is no DMA connnection between GPDMA and EMC . But in page 40 , fig 11 show connection between DMA and EMC. So , can I do that ?

All I want to do is :
1. DMA data from memory to GPIO to generate some waveform
2. DMA data from GPIO to SDRAM to get data back to system
3. DMA data from SDRAM to USB0 to transfer data to PC

Thanks
Max

[lpcware]

Content originally posted in LPCWare by Max Chen on Fri May 29 16:50:23 MST 2015
Hi Wolfgang
Thanks for the information.
Regards
Max

[lpcware]

Content originally posted in LPCWare by wmues on Fri May 29 02:51:38 MST 2015
GPDMA is able to access the EMC. I am using this with the SD card interface.

regards
Wolfgang