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DSP Hello World » arm_main.cpp

Updated to remove delete statements until they can be fixed. - Jonathan Cormier, 06/24/2013 08:41 AM

 
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/**
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 * 	\file: 	main.cpp
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 *
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 *  \brief 	ARM side main routine for DSP Hello World application.
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 *  		The ARM sets itself up, sends a message to the DSP,
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 *  		and then waits for a return message before exiting.
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 *
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 *     o  0
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 *     | /       Copyright (c) 2005-2010
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 *    (CL)---o   Critical Link, LLC
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 *      \
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 *       O
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 */
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#include "dspapp.h"
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include "ipc_inbound.h"
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#include "ipc_outbound.h"
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using namespace MityDSP;
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// Forward declarations
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int handleInboundMessage(void *Buffer, uint16_t Length, void *UserArg);
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volatile bool gbDone = false;
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int main(int argc, char* argv[])
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{
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	// tcDspApp class for booting and loading the DSP
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	tcDspApp* 		lpDspApp = NULL;
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	// Used to setup handling of inbound messages from DSP
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	tcIPCInbound* 	lpMessageInbound  = NULL;
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	// Used to send messages to the DSP
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	tcIPCOutbound* 	lpMessageOutbound  = NULL;
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	// Message to send to the DSP
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	char			lpMessage[] = "Hello DSP";
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	// Pointer to buffer obtained from dsplink
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	char*			lpMessageBuffer = NULL;
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	// Message from standard input
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	char 			lpUsrMsg[180] = {0};
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	// Check application usage
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	if (argc < 2)
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	{
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		printf("usage: HelloWorld dsp_image.out\n");
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		return -1;
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	}
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	// Create the DspApp object
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	lpDspApp = new tcDspApp();
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	// Load the DSP.out file
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	printf("Loading file %s\n", argv[1]);
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	lpDspApp->LoadApp(argv[1]);
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	printf("Starting application.\n");
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	// Create the object to handle incoming messages from the DSP
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	lpMessageInbound =  new tcIPCInbound((char*)"GPPMSGQ1");
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	if (NULL != lpMessageInbound)
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	{
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		// Register the callback for handling messages from the DSP
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		lpMessageInbound->Register(handleInboundMessage, (void*)NULL);
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		// Intiailize the inbound controller to create the thread that handles the callbacks
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		lpMessageInbound->Initialize();
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	}
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	// Create the object used to send messages to the DSP
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	lpMessageOutbound = new tcIPCOutbound((char*)"DSPMSGQ0");
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	// Wait for the DSP to finish initialization
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	while(false == gbDone);
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	// Reset bool in prep for next receive message from DSP
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	gbDone = false;
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	// Get a buffer for a message to the DSP
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	lpMessageBuffer = (char*)lpMessageOutbound->GetBuffer(strlen(lpMessage)+1);
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	// Copy the message to the dsplink buffer
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	strcpy(lpMessageBuffer, lpMessage);
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	// Send the message to the DSP
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	printf("Sending a message to the DSP.\n");
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	lpMessageOutbound->SendMessage(lpMessageBuffer);
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	// Wait for a message to be received from the DSP or for user to quit
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	printf("Waiting for DSP response (type \'q\' to quit)...\n");
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	while(gbDone == false && lpUsrMsg[0] != 'q')
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	{
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		fgets(lpUsrMsg, 180, stdin);
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	}
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	printf("Exiting application.\n");
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	// Stop the DSP application from running
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	lpDspApp->StopApp();
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	// Cleanup
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	// Commented out because deletes throw Assert errors.
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	//delete lpDspApp;
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	//delete lpMessageInbound;
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	//delete lpMessageOutbound;
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	return 0;
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}
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/**
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 *	Handle inbound messages from the DSP.
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 *
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 *	\param apBuffer		Pointer to the buffer containing the message.
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 *	\param anLength 	The length of the message.
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 *	\param apUserArg	User defined argument.
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 *
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 *	\return 0.
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 */
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int handleInboundMessage(void *apBuffer, uint16_t anLength, void *apUserArg)
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{
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	printf("ARM received a message from the DSP:\n");
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	// Print the message we received
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	printf("\tDSP Message = \"%s\"\n", (char *)apBuffer);
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	// Notify the main function that we have received a message from the DSP and are done
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	gbDone = true;
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	return 0;
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}
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