System_printf no output on cole outside of main()

Other Parts Discussed in Thread: SYSBIOS

hi all,

   I am developing on a EVMK2H board using the latest MSCSDK and SYSBIOS on the dsp cores. I am using CCSv6.1 I. was able to get System_printf to output text on the cole in the main function. I created a task dynamically in the main. However, the System_printf failed to output anything on the console from the task function that I created. The System_printf also failed during the subsequent call of another utility function from the task function.

I attached my codes down below.

/*
 *  ======== main.c ========
 */

#include <xdc/std.h>

#include <xdc/runtime/System.h>

#include <ti/sysbios/BIOS.h>
#include <xdc/runtime/Log.h>
#include <ti/sysbios/knl/Task.h>
#include <xdc/cfg/global.h>
#include <xdc/runtime/Diags.h>
#include <xdc/runtime/Error.h>
// ipc headers
#include <ti/ipc/Ipc.h>
#include <ti/sdo/utils/MultiProc.h>
//#include <ti/sdo/ipc/MessageQ.h>
//#include <ti/ipc/SharedRegion.h>
#include <ti/ipc/MessageQ.h>
#include <ti/ipc/SharedRegion.h>

#include "msg.h"

#define Heap_ID 2
#define size = sizeof(MessageQ_MsgHeader) + 5
/*
 *  ======== taskFxn ========
 */
Void taskFxn();
Void msgWriter();
Void msgReader();

/*
 *  ======== main ========
 */


Int main()
{ 
    /*
     * use ROV->SysMin to view the characters in the circular buffer
     */
	System_printf("enter main()\n");
     //UInt16 CORE_ID = MultiProc_self();
	Error_Block eb;
	Task_Params taskParams;
	System_printf("enter main()\n");
	Task_Params_init(&taskParams);
	taskParams.instance->name = "taskFxn";

	taskParams.stackSize = 0x1000;
	Error_init(&eb);

	Task_create(taskFxn, &taskParams, &eb);

    if (Error_check(&eb)) {
        System_abort("main: failed to create application thread");
    }
   BIOS_start();    /* does not return */
    return(0);
}

Void taskFxn()
{	System_printf("enter task function");  //this one failed to display anything on the console
	UInt16 coreID = MultiProc_self();
		if (coreID == (UInt16)1)
		{
			msgWriter();
			}

		else{
			msgReader();
		}

}


Void msgWriter(Void) {
 
  System_printf("enter writer function");   //this one failed to display anything on the console
  Int status = Ipc_start();
  if (status < 0) {
  	      System_abort("Ipc_start failed\n");
  	  }
  System_printf("IPC ready");
/*
  do {
	  UInt16 id = MultiProc_getId("CORE1");
	  status = Ipc_attach(id);
  }  while (status == Ipc_E_NOTREADY);
*/
  // allocate a message

  Ptr heap;
  heap = SharedRegion_getHeap(0);
  MessageQ_registerHeap(heap,Heap_ID);
  app_msg *msg;
  MessageQ_QueueId qid;

  do {
	status =MessageQ_open("myQ",&qid);
  }  while (status == MessageQ_E_NOTFOUND  );
  System_printf("messageQ opened succesfully");
		  while (1)
		  {
			 msg = (app_msg * ) MessageQ_alloc(Heap_ID,sizeof(app_msg));
			 char payload[] ="hello";
			 (*msg).msg = payload;
			 MessageQ_put (qid, (MessageQ_Msg) msg);

		  }
}

Void msgReader (Void) {

	System_printf("enter reader function");  //this one failed to display anything on the console

	Int status = Ipc_start();
	if (status < 0) {
	      System_abort("Ipc_start failed\n");
	  }
		System_printf( "App_taskFxn: ipc ready");
		/*
		do {
			UInt16 id =MultiProc_getId("CORE1");
			status = Ipc_attach(id);
		} while (status == Ipc_E_NOTREADY );
		System_printf("ipc to dsp core 1 ready ");
	*/
		Ptr heap = SharedRegion_getHeap(0);
		   	MessageQ_Handle que;
		   	app_msg *msg;
		   	MessageQ_registerHeap(heap,Heap_ID);
		   	que = MessageQ_create("myQ", NULL);
       while(1)
       {

    	  MessageQ_get(que,(MessageQ_Msg *)&msg,MessageQ_FOREVER);
    	  char *payload = msg->msg;
    	  System_printf("the payload is %s\n",payload);
    	  MessageQ_free((MessageQ_Msg) msg);
       }

}