demo/main.c

   1 #include <avr/io.h>
   2 #include <util/delay.h>
   3 #include <stdlib.h>
   4 #include <inttypes.h>
   5
   6 // xaffe was here…
   7
   8 uint8_t *red, *green, *blue;
   9
  10 void init_timer(void);
  11 void demo_matrix(uint8_t*, uint8_t*, uint8_t*);
  12 void display_matrix(void);
  13
  14 int main(void)
  15 {
  16
  17   red=malloc(32 * sizeof(uint8_t));
  18   green=malloc(32 * sizeof(uint8_t));
  19   blue=malloc(32 * sizeof(uint8_t));
  20
  21   init_timer();
  22   demo_matrix(red, green, blue);
  23
  24   //  char s[4];
  25
  26   //PINs konfiguriern
  27   DDRB  = (1 << DDB1) | (1 << DDB2) | (1 << DDB3) | (1 << DDB4) | (1 << DDB5);
  28   PORTB = (1 << PB3);//pwm
  29   //pb3 - pwm; pb1 - SR out clk;pb2 - SR input;pb4 - SR reset;pb5 - SR shift clk
  30
  31   DDRC  = (1 << DDC0) | (1 << DDC1) | (1 << DDC2) | (1 << DDC3);
  32     //led anodes
  33
  34   DDRD  = (1 << DDD0) | (1 << DDD5) | (1 << DDD6) | (1 << DDD7) ;
  35
  36
  37   PORTB |= (1 << PB4); //reset
  38   OCR2A=0;//hellikeit
  39   //  red[31]=1;
  40
  41   while(1)
  42     {
  43       display_matrix();
  44
  45     }
  46   return 0;
  47 }
  48
  49
  50 void init_timer(void)
  51 {
  52
  53   //Timer setzen, PWM
  54   //Timer0 PinD6 OC0A
  55   //---TCCR0A = (1 << COM0A1) | (1 << COM0B1) | (1 << WGM01) | (1 << WGM00); // FAST PWM ON OC0A OC0B
  56   //---TCCR0B = (1 << CS00); // NO PRESCALER
  57   //TIMSK0 = (1 << OCIE0A);//interupt enable
  58
  59   //OC0A green
  60   //OC0B red
  61   //OC2A blue
  62
  63   //Timer2 -- helligkeit
  64   TCCR2A = (1 << COM2A1) | (1 << WGM21) | (1 << WGM20);
  65   TCCR2B = (1 << CS20); // NO PRESCALER
  66   //TIMSK0 = (1 << OCIE0A);//interupt enable
  67
  68 }
  69
  70 void demo_matrix(uint8_t* red, uint8_t* green, uint8_t* blue)
  71 {
  72   for(int y=0;y<32;y++)
  73     {
  74       red[y]=255/(y*8);
  75       green[y]=255/(255-(y*8));
  76       blue[y]=255/(255-(y*8));
  77     }
  78 }
  79 /*
  80
  81 void demo_matrix(uint8_t* red, uint8_t* green, uint8_t* blue)
  82 {
  83   for(int y=0;y<32;y++)
  84     {
  85         red[y]=y*8;
  86         green[y]=255-y*8;
  87         blue[y]=255-y*8;
  88     }
  89 }
  90  */
  91
  92 void display_matrix(void)
  93 {
  94   uint8_t i,j,x,y,portc,color;
  95
  96       for(i=0; i<255; i++)
  97         {
  98           portc = 1;
  99
 100           for(y=0;y<32;y+=8)
 101             {
 102
 103               for(x =0; x<8; x++)
 104                 {
 105                   PORTD &= ~((1<<PD5)|(1<<PD6)|(1<<PD7));
 106                   j=x+y;
 107
 108                   if(red[j]&&!(i%red[j]))
 109                     PORTD |= (1<<PD5);
 110
 111                   if(green[j]&&!(i%green[j]))
 112                     PORTD |= (1<<PD6);
 113
 114                   if(blue[j]&&!(i%blue[j]))
 115                   PORTD |= (1<<PD7);
 116
 117                   //shift
 118                   PORTB |= (1 << PB5);
 119                   PORTB &= ~ (1 << PB5);
 120                 }
 121
 122               //set line
 123               PORTB |= (1 << PB1);
 124               PORTB &= ~(1 << PB1);
 125
 126               PORTC |= 0x0F;
 127               PORTC &= ~portc;
 128               portc<<=1;
 129
 130             }
 131         }
 132 }
 133
 134 /*
 135 - timer interupt
 136 + y vor x
 137 - color map
 138 - shift reg pwm!!!overkill 4x more lightness
 139  */