C64x VCP running problem : VCP is blocked

Hello,

I am trying to implement the VCP on DSPC6416. I followed the articles spru533 and spru750.

But when I run VCP_Start(), the program is blocked and I did not receive any output.

this is my program:

===============================================================================================

    EDMA_resetAll();    

    IRQ_enable(IRQ_EVT_EDMAINT);          /* Enable EDMA -> CPU interrupt   */

    IRQ_nmiEnable();                      /* Enable non-maskable interrupt  */

    IRQ_globalEnable();                   /* Globally enable all interrupts */

   vcpSubmitEdma(hVcpUserData, hVcpConfigParms, hVcpConfigIc, hVcpDecisions, hVcpOutParms);

   asm(" nop");

   VCP_start();

   asm(" IDLE");

===============================================================================================

The pointer stopped at : asm(" IDLE");

And the value of VCPic register waschanged. This is the value before VCP_start() :

===============================================================================================

hVcpConfigIc 0x0001F918 VCP_ConfigIc * hex

ic0 0x0000E46C Uint32 hex

ic1 0x10640000 Uint32 hex

ic2 0x00000070 Uint32 hex

ic3 0x00000000 Uint32 hex

ic4 0x00000400 Uint32 hex

ic5 0x411E0000 Uint32 hex

And after  VCP_start(); (pointer is blocked at asm(" IDLE")) :

===============================================================================================

hVcpConfigIc 0x00005F74 VCP_ConfigIc * hex

ic0 0x00100FD8 Uint32 hex

ic1 0xD009A120 Uint32 hex

ic2 0x002A8120 Uint32 hex

ic3 0x0204A358 Uint32 hex

ic4 0x023C22E6 Uint32 hex

ic5 0x00006000 Uint32 hex

Please tell me what is the problem.

Thanks a lot.

Nguyen