help for using C6474 CSL EDMA3

Perhaps you have solved your problem by now. This is a difficult problem to understand, and I have read your posting several times to try to find a suggestion. I find three possible directions to approach the problem.

touse

I'm porting C6474 CSL EDMA3 to my project to transfer a block of a picture located in DDR to on-chip L1 memory!

Is L1 configured with different cache settings in the test program than in your program? Or is the area of L1 to which you are transfering data in L1 cache rather than L1 SRAM. Please check these configurations by looking at the cache configuration registers, the DSP/BIOS configuration, and the destination address for the EDMA transfer.

touse

But the CCS hangs every time after the begin of the channel transfer!

Immediately after the command that starts the channel transfer, insert some code that just waits, such as

for ( i = 0; i < 1000; i++ )
        j=i+1;

Put this code as deep as possible, such as immediately after the call to the CSL_ command that starts the transfer. Open a memory window to look at the destination memory where the EDMA should be writing and a memory window to look at the PARAM for this channel. Then single-step through the for-loop and watch the data as it changes in the memory windows. This may help you find exactly how far the transfer is progressing and which word or area is causing the problem.

touse

I've tried to debug step by step, seeing from the assembly code, afte the start of the EDMA transfer, and begin the running of my program, an error "Error: Illegal opcode (ec000000) at pc = 0x84811d74" occurs at the end of the function calling the EDMA start funcion!

This is the best detail available to look for a specific problem. Is there an instance of "ec000000 anywhere in your source data in DDR memory? If this error is very consistent, then you could do a memory save for any or all regions of memory and search for ec000000 to find why this error is occuring.