/*
 *    Max7219.h - A library for controling Leds with a MAX7219/MAX7221
 *    Copyright (c) 2007 Eberhard Fahle
 * 
 *    Permission is hereby granted, free of charge, to any person
 *    obtaining a copy of this software and associated documentation
 *    files (the "Software"), to deal in the Software without
 *    restriction, including without limitation the rights to use,
 *    copy, modify, merge, publish, distribute, sublicense, and/or sell
 *    copies of the Software, and to permit persons to whom the
 *    Software is furnished to do so, subject to the following
 *    conditions:
 * 
 *    This permission notice shall be included in all copies or 
 *    substantial portions of the Software.
 * 
 *    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 *    EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
 *    OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 *    NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
 *    HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 *    WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 *    FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 *    OTHER DEALINGS IN THE SOFTWARE.
 */

#ifndef _DUINOPLUSMAX7219_H_
#define _DUINOPLUSMAX7219_H_

#include <avr/pgmspace.h>

#if (ARDUINO >= 100)
#include <Arduino.h>
#else
#include <WProgram.h>
#endif

/*
	������ϵ����ֺ���ĸ
 */
 const static byte charTable [] PROGMEM  = {
    B01111110,B00110000,B01101101,B01111001,B00110011,B01011011,B01011111,B01110000,
    B01111111,B01111011,B01110111,B00011111,B00001101,B00111101,B01001111,B01000111,
    B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,
    B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,
    B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,
    B00000000,B00000000,B00000000,B00000000,B10000000,B00000001,B10000000,B00000000,
    B01111110,B00110000,B01101101,B01111001,B00110011,B01011011,B01011111,B01110000,
    B01111111,B01111011,B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,
    B00000000,B01110111,B00011111,B00001101,B00111101,B01001111,B01000111,B00000000,
    B00110111,B00000000,B00000000,B00000000,B00001110,B00000000,B00000000,B00000000,
    B01100111,B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,
    B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,B00001000,
    B00000000,B01110111,B00011111,B00001101,B00111101,B01001111,B01000111,B00000000,
    B00110111,B00000000,B00000000,B00000000,B00001110,B00000000,B00010101,B00011101,
    B01100111,B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,
    B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,B00000000
}; 

class Max7219 {
    private :
        int SPI_MOSI;
        int SPI_CLK;
        int SPI_CS;
		byte status[64];
		byte spidata[16];  /*��ʱ������������SPI����*/
		void spiTransfer(int addr, byte opcode, byte data);  /*�������ݴ���*/

    public:        
        int maxDevices;   /*��༶���豸*/
        Max7219(int csPin, int dataPin, int clkPin, int numDevices=1);    /* ȱʡ�����豸��Ϊ1 */
        int getDeviceCount();                /*��ȡ�����豸��  */
        void shutdown(bool status);          /*���� */
        void setScanLimit(int limit);        /*   */
        void setIntensity(int intensity);    /*��������  */
		void clearDisplay(void);
		void update(byte *buff);             /*������Ļ���ѻ������������͵�оƬ*/
		void setDigit(int addr, int digit, byte value, boolean dp);   /*�������ʾ����*/
		void setChar(int addr, int digit, char value, boolean dp);    /*�������ʾ�ַ�*/
};

#endif	/*_MAX7219_H_*/