dprintf.c

基于ADSP-BF535 USB驱动应用程序

/*----------------------------------------------------------------------------------
*
* COPYRIGHT (c) 2001 by Singing Electrons, Inc. All rights reserved.
*
* Module Name			: C:\se\adi\hidclass\source\dprintf.c
*
* Description			: Code to allow printfs without the overhead
*
*
* Revision History	: At bottom of the file.
*
*---------------------------------------------------------------------------------*/

/** include files **/
#include "dprintf.h"

/** local definitions **/

/* default settings */

/** external functions **/

/** external data **/

/** internal functions **/

/** public data **/

/** private data **/

/** public functions **/

/** private functions **/





#if DPRINTF_SUPPRESS

//Nothing to do!

#else

char gDprintfBuffer[MAX_DPRINTFBUFFER_ENTRIES][MAX_DPRINTFBUFFER_LEN];
int gCurrentDprintfBufferIndex = 0;

/*------------------------------------------------------------
*	DumpDprintf
*
*	Parameters:  
*		lastFew - set this to 1 to print all entries, otherwise
*			set this to the number of "latest" entries to dump.
*
*	Globals Used:
*		gCurrentDprintfBufferIndex, gDprintfBuffer
*
*	Description:
*		Dumps the specified number of entries from the
*		buffer using printf (to the console).
*
*	Returns:
*		Nothing
*
*------------------------------------------------------------*/
void DumpDprintf (int lastFew)
	{
		int currentEntry = 0, startingEntry, endingEntry;

		if (lastFew == 1)
			{
				startingEntry = (gCurrentDprintfBufferIndex + 1) % MAX_DPRINTFBUFFER_ENTRIES;
				endingEntry = gCurrentDprintfBufferIndex;
			}
		else
			{
				if (gCurrentDprintfBufferIndex >= lastFew)
					{
						startingEntry = gCurrentDprintfBufferIndex - lastFew;
						endingEntry = gCurrentDprintfBufferIndex;
					}
				else
					{
						startingEntry = MAX_DPRINTFBUFFER_ENTRIES - (lastFew - gCurrentDprintfBufferIndex);
						endingEntry = gCurrentDprintfBufferIndex;
					}
			}

		for (currentEntry = startingEntry; currentEntry != endingEntry; currentEntry = (currentEntry + 1) % MAX_DPRINTFBUFFER_ENTRIES)
			if (strlen (gDprintfBuffer[currentEntry]) > 0)
				printf ("%02d: %s\n", currentEntry, gDprintfBuffer[currentEntry]);
	}


/*------------------------------------------------------------
*	InitDprintf
*
*	Parameters:  
*		None.
*
*	Globals Used:
*		gCurrentDprintfBufferIndex, gDprintfBuffer
*
*	Description:
*		This routine clears the buffer, and initializes the
*		index.
*
*	Returns:
*		Nothing
*
*------------------------------------------------------------*/
void InitDprintf (void)
	{
		memset (gDprintfBuffer, 0, sizeof (gDprintfBuffer));
		gCurrentDprintfBufferIndex = 0;
	}

#endif



/*----------------------------------------------------------------------------------
* $Log: dprintf.c,v $
* Revision 1.1  2003/01/09 01:16:36  Devendra
* First Rev of AudioClass - have the device enumerated as audio device, and the volume control and mute are functional!
*
* Revision 1.1  2002/10/31 00:30:59  Devendra
* Moved all files in one folder to avoid IDE related problems.
*
* Revision 1.1  2002/10/22 17:23:39  Devendra
* Rearranged file locations.
*
* Revision 1.2  2002/10/09 17:09:32  Devendra
* - Added support for handling IN endpoints.
* - Added HID descriptors (HID and HID Report)
* - Modified the Interface descriptors to comply to HID Class Spec.
* - Added functionality to use the push-buttons on the Eagle-35 as a mouse (for buttons as well as for movement).
* - The device is now a fully functioning USB Mouse!
*
* Revision 1.1  2002/10/08 20:44:35  Devendra
* - Separated the printf logging to a different c module.
*
*
*---------------------------------------------------------------------------------*/