C6654 processor EDMA transfer from L2 to peripheral

giorgos tsoumplekas

Dear all,

In C6654 single core DSP, is it necessary to map the local L2 memory address to a global L2 address , whne we need to transfer data from the Local L2 to a peripheral?

Best regards

George

over 10 years ago

0 one and zero over 10 years ago

TI__Mastermind 18146 points

Hi George,

yes. The EDMA only sees global addresses ...

A local address is only seen from the CPU.

Kind regards,

one and zero

0 Sivaraj Kuppuraj over 10 years ago

TI__Mastermind 35645 points

Hi,

Thanks for your post.

It all depends how you define L2 memory in the linker command file and to my knowledge, L2 memory region is unique and the memory address range would be defined in the linker command file through which all pieces of code would be mapped to different memory sections associated with L2/DDR.

Thanks & regards,
Sivaraj K

0 one and zero over 10 years ago in reply to Sivaraj Kuppuraj

TI__Mastermind 18146 points

Hi,

L2 local address is 0x00800000, while L2 global address is 0x10800000. The EDMA can only access L2 via the global address. This has nothing to do with the linker command file.

Kind regards,

one and zero

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C6654 processor EDMA transfer from L2 to peripheral