videotxt21.c

单片机VIDEO源代码及说明.其实我也不知道里面是做什么用的.我只是拿来学C编程的.

 
//video gen  and Kalidascope
//D.5 is sync:1000 ohm + diode to 75 ohm resistor
//D.6 is video:330 ohm + diode to 75 ohm resistor
                    
#include <Mega163.h>   
#include <stdio.h>
#include <stdlib.h> 
#include <math.h>

//cycles = 63.625 * 8 Note NTSC is 63.55 
//but this line duration makes each frame exactly 1/60 sec
//which is nice for keeping a realtime clock 
#define lineTime 509
 
#define begin {
#define end   }
#define ScreenTop 30
#define ScreenBot 230
#define T0reload 256-60

//NOTE that the first line of CHARs must be in registers!
char syncON, syncOFF, v1, v2, v3, v4, v5, v6, v7, v8; 
int i,LineCount;
int time;
char screen[800], t, ts[10]; 
char gaugeY ;   //state variable for gauge
char figure ;   //state variable for waving figure
char numstr[]="0123456789";
char alphastr1[]="ABCDEFGHIJKLM";
char alphastr2[]="NOPQRSTUVWXYZ"; 
char alphastr3[]="ABCDEFG";
char alphastr4[]="HIJKLMN"; 
char alphastr5[]="OPQRSTU";
char alphastr6[]="VWXYZ";
char cu1[]="CORNELL"; 
char cu2[]="ECE476";

//define some character bitmaps
//5x7 characters
flash char bitmap[38][7]={ 
	//0
	0b01110000,
	0b10001000,
	0b10011000,
	0b10101000,
	0b11001000,
	0b10001000,
	0b01110000,
	//1
	0b00100000,
	0b01100000,
	0b00100000,
	0b00100000,
	0b00100000,
	0b00100000,
	0b01110000,  
	//2
	0b01110000,
	0b10001000,
	0b00001000,
	0b00010000,
	0b00100000,
	0b01000000,
	0b11111000,
    	//3
	0b11111000,
	0b00010000,
	0b00100000,
	0b00010000,
	0b00001000,
	0b10001000,
	0b01110000,
	//4
	0b00010000,
	0b00110000,
	0b01010000,
	0b10010000,
	0b11111000,
	0b00010000,
	0b00010000,
	//5
	0b11111000,
	0b10000000,
	0b11110000,
	0b00001000,
	0b00001000,
	0b10001000,
	0b01110000,
	//6
	0b01000000,
	0b10000000,
	0b10000000,
	0b11110000,
	0b10001000,
	0b10001000,
	0b01110000,
	//7
	0b11111000,
	0b00001000,
	0b00010000,
	0b00100000,
	0b01000000,
	0b10000000,
	0b10000000,
	//8
	0b01110000,
	0b10001000,
	0b10001000,
	0b01110000,
	0b10001000,
	0b10001000,
	0b01110000,
	//9
	0b01110000,
	0b10001000,
	0b10001000,
	0b01111000,
	0b00001000,
	0b00001000,
	0b00010000,  
	//A
	0b01110000,
	0b10001000,
	0b10001000,
	0b10001000,
	0b11111000,
	0b10001000,
	0b10001000,
	//B
	0b11110000,
	0b10001000,
	0b10001000,
	0b11110000,
	0b10001000,
	0b10001000,
	0b11110000,
	//C
	0b01110000,
	0b10001000,
	0b10000000,
	0b10000000,
	0b10000000,
	0b10001000,
	0b01110000,
	//D
	0b11110000,
	0b10001000,
	0b10001000,
	0b10001000,
	0b10001000,
	0b10001000,
	0b11110000,
	//E
	0b11111000,
	0b10000000,
	0b10000000,
	0b11111000,
	0b10000000,
	0b10000000,
	0b11111000,
	//F
	0b11111000,
	0b10000000,
	0b10000000,
	0b11111000,
	0b10000000,
	0b10000000,
	0b10000000,
	//G
	0b01110000,
	0b10001000,
	0b10000000,
	0b10011000,
	0b10001000,
	0b10001000,
	0b01110000,
	//H
	0b10001000,
	0b10001000,
	0b10001000,
	0b11111000,
	0b10001000,
	0b10001000,
	0b10001000,
	//I
	0b01110000,
	0b00100000,
	0b00100000,
	0b00100000,
	0b00100000,
	0b00100000,
	0b01110000,
	//J
	0b00111000,
	0b00010000,
	0b00010000,
	0b00010000,
	0b00010000,
	0b10010000,
	0b01100000,
	//K
	0b10001000,
	0b10010000,
	0b10100000,
	0b11000000,
	0b10100000,
	0b10010000,
	0b10001000,
	//L
	0b10000000,
	0b10000000,
	0b10000000,
	0b10000000,
	0b10000000,
	0b10000000,
	0b11111000,
	//M
	0b10001000,
	0b11011000,
	0b10101000,
	0b10101000,
	0b10001000,
	0b10001000,
	0b10001000,
	//N
	0b10001000,
	0b10001000,
	0b11001000,
	0b10101000,
	0b10011000,
	0b10001000,
	0b10001000,
	//O
	0b01110000,
	0b10001000,
	0b10001000,
	0b10001000,
	0b10001000,
	0b10001000,
	0b01110000,
	//P
	0b11110000,
	0b10001000,
	0b10001000,
	0b11110000,
	0b10000000,
	0b10000000,
	0b10000000,
	//Q
	0b01110000,
	0b10001000,
	0b10001000,
	0b10001000,
	0b10101000,
	0b10010000,
	0b01101000,
	//R
	0b11110000,
	0b10001000,
	0b10001000,
	0b11110000,
	0b10100000,
	0b10010000,
	0b10001000,
	//S
	0b01111000,
	0b10000000,
	0b10000000,
	0b01110000,
	0b00001000,
	0b00001000,
	0b11110000,
	//T
	0b11111000,
	0b00100000,
	0b00100000,
	0b00100000,
	0b00100000,
	0b00100000,
	0b00100000,
	//U
	0b10001000,
	0b10001000,
	0b10001000,
	0b10001000,
	0b10001000,
	0b10001000,
	0b01110000,
	//V
	0b10001000,
	0b10001000,
	0b10001000,
	0b10001000,
	0b10001000,
	0b01010000,
	0b00100000,
	//W
	0b10001000,
	0b10001000,
	0b10001000,
	0b10101000,
	0b10101000,
	0b10101000,
	0b01010000,
	//X
	0b10001000,
	0b10001000,
	0b01010000,
	0b00100000,
	0b01010000,
	0b10001000,
	0b10001000,
	//Y
	0b10001000,
	0b10001000,
	0b10001000,
	0b01010000,
	0b00100000,
	0b00100000,
	0b00100000,
	//Z
	0b11111000,
	0b00001000,
	0b00010000,
	0b00100000,
	0b01000000,
	0b10000000,
	0b11111000,
	//figure1
	0b01110000,
	0b00100000,
	0b01110000,
	0b10101000,
	0b00100000,
	0b01010000,
	0b10001000,
	//figure2
	0b01110000,
	0b10101000,
	0b01110000,
	0b00100000,
	0b00100000,
	0b01010000,
	0b10001000};


//================================ 
//3x5 font numbers, then letters
//packed two per definition for fast 
//copy to the screen at x-position divisible by 4
flash char smallbitmap[39][5]={ 
	//0
    	0b11101110,
	0b10101010,
	0b10101010,
	0b10101010,
	0b11101110,
	//1
	0b01000100,
	0b11001100,
	0b01000100,
	0b01000100,
	0b11101110,
	//2
	0b11101110,
	0b00100010,
	0b11101110,
	0b10001000,
	0b11101110,
	//3
	0b11101110,
	0b00100010,
	0b11101110,
	0b00100010,
	0b11101110,
	//4
	0b10101010,
	0b10101010,
	0b11101110,
	0b00100010,
	0b00100010,
	//5
	0b11101110,
	0b10001000,
	0b11101110,
	0b00100010,
	0b11101110,
	//6
	0b11001100,
	0b10001000,
	0b11101110,
	0b10101010,
	0b11101110,
	//7
	0b11101110,
	0b00100010,
	0b01000100,
	0b10001000,
	0b10001000,
	//8
	0b11101110,
	0b10101010,
	0b11101110,
	0b10101010,
	0b11101110,
	//9
	0b11101110,
	0b10101010,
	0b11101110,
	0b00100010,
	0b01100110,
	//:
	0b00000000,
	0b01000100,
	0b00000000,
	0b01000100,
	0b00000000,
	//=
	0b00000000,
	0b11101110,
	0b00000000,
	0b11101110,
	0b00000000,
	//blank
	0b00000000,
	0b00000000,
	0b00000000,
	0b00000000,
	0b00000000,
	//A
	0b11101110,
	0b10101010,
	0b11101110,
	0b10101010,
	0b10101010,
	//B
	0b11001100,
	0b10101010,
	0b11101110,
	0b10101010,
	0b11001100,
	//C
	0b11101110,
	0b10001000,
	0b10001000,
	0b10001000,
	0b11101110,
	//D
	0b11001100,
	0b10101010,
	0b10101010,
	0b10101010,
	0b11001100,
	//E
	0b11101110,
	0b10001000,
	0b11101110,
	0b10001000,
	0b11101110,
	//F
	0b11101110,
	0b10001000,
	0b11101110,
	0b10001000,
	0b10001000,
	//G
	0b11101110,
	0b10001000,
	0b10001000,
	0b10101010,
	0b11101110,
	//H
	0b10101010,
	0b10101010,
	0b11101110,
	0b10101010,
	0b10101010,
	//I
	0b11101110,
	0b01000100,
	0b01000100,
	0b01000100,
	0b11101110,
	//J
	0b00100010,
	0b00100010,
	0b00100010,
	0b10101010,
	0b11101110,
	//K
	0b10001000,
	0b10101010,
	0b11001100,
	0b11001100,
	0b10101010,
	//L
	0b10001000,
	0b10001000,