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About the driver named "c6x1x_edma_mcasp.c" used to DM642

Radella yan
Prodigy 80 points

Hi all,

I am trying to transplant the driver named "c6x1x_edma_mcasp.c" to the DM642  for the purpose to collect the audio data.But I find my program runs to an unexpected address when existing the following statement :

 EDMA_link(pramPtr, chan->loophEdma); existing in the function named "linkPacket()"  .

 And chan->loophEdma  with the following configuration  structure  is for realizing that  If the McASP is left to free running, this loop job is running when there is no data to transfer.

  the configuration structure is :

OPT=0X20000003; CNT =0X00000001; DST = 0X00000940; RLD=0X00010000; SRC is the address of the Receive Buffer Regiesters;

I tried to find the cause  by many method  but not successed . Do anyone give me suggestion!

Many thanks!

Radella.