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/*
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    Copyright (C) 2004    John Orlando
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   AVRcam: a small real-time image processing engine.
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    This program is free software; you can redistribute it and/or
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    modify it under the terms of the GNU General Public
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    License as published by the Free Software Foundation; either
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    version 2 of the License, or (at your option) any later version.
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    This program is distributed in the hope that it will be useful,
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    but WITHOUT ANY WARRANTY; without even the implied warranty of
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    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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    General Public License for more details.
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    You should have received a copy of the GNU General Public
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    License along with this program; if not, write to the Free Software
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    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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   For more information on the AVRcam, please contact:
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   john@jrobot.net
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   or go to www.jrobot.net for more details regarding the system.
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*/
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/***********************************************************
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	Module Name: DebugInterface.c
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	Module Date: 04/15/2004
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	Module Auth: John Orlando
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	Description: This module is responsible for providing a
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	debug interface to the system.  Currently, the only
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	debugging that is available is through the on-board
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	UART (which is used by the main application as well) in
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	addition to the LED hooked up at PORTD bit 6.
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    Revision History:
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    Date        Rel Ver.    Notes
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    4/10/2004      0.1     Module created
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    6/30/2004      1.0     Initial release for Circuit Cellar
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                           contest.
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***********************************************************/
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/*	Includes */
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#include "CommonDefs.h"
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#include "UartInterface.h"
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#include "Utility.h"
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/*  Local Variables */
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/* 	Local Structures and Typedefs */
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/*  Extern Variables */
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/*  Definitions */
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/***********************************************************
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	Function Name: DebugInt_init
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	Function Description: This function is responsible for
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	initializing the debug module.  It sets up the debug LED
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	as well as any other debugging that will be done.  The 
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    LED blinks four times, which indicates to the user
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    that the system is available for re-programming if 
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    necessary.  This works because the data lines on the
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    OV6620 are still tri-stated at this point, but won't
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    be for long after this function returns.
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	Inputs:  none
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	Outputs: none
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***********************************************************/	
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void DebugInt_init(void)
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{
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	/* set PortD pin6 for output */
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	DDRD  |= 0x40;
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	/* turn on LED */
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	PORTD |= 0x40;
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    Utility_delay(500);
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    PORTD &= 0xBF;
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    Utility_delay(500);
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    PORTD |= 0x40;
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    Utility_delay(500);
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    PORTD &= 0xBF;
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    Utility_delay(500);
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    PORTD |= 0x40;
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    Utility_delay(500);
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    PORTD &= 0xBF;
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    Utility_delay(500);
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    PORTD |= 0x40;
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}
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