/*

Copyright (c) 2010, Shawn McGregor All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
    * Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

MAX7219.h

*/

#include <p18cxxx.h>
#include <pconfig.h>

#ifndef max7219_H
#define max7219_H

// Chipset Configuration Settings

#define SPI_CS      	 (LATDbits.LATD0) 			// chip-select pin (change as needed)

// Register Locations

#define Reg_Decode        		0x09           		// register "decode mode" 
#define Reg_Intensity     		0x0a           		// register "intensity"
#define Reg_Scanlimit     		0x0b           		// register "scan limit"
#define Reg_Shutdown      		0x0c           		// register "shutdown"
#define Reg_DisplayTest   		0x0f           		// register "display test"

#define Intensity_Min     		0x00           		// minimum display intensity
#define Intensity_Max     		0x0f           		// maximum display intensity


// Code Interface

void MAX7219_InitBCD		(void);
void MAX7219_Write		(unsigned char reg_address, unsigned char dataout);
void MAX7219_SendByte		(unsigned char dataout);
void MAX7219_Clear		(void);
void MAX7219_Shutdown		(void);
void MAX7219_Wakeup		(void);
void MAX7219_SetBrightness	(char brightness);
void MAX7219_StartDisplayTest	(void);
void MAX7219_StopDisplayTest	(void);