281 lines
7.8 KiB
C
281 lines
7.8 KiB
C
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// Mini-LED-Cube 1.0
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//
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// Copyright (C) 2009 Paul Wilhelm <paul@mosfetkiller.de>
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// http://mosfetkiller.de/?s=miniledcube
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// Interner RC-Oszillator, CKDIV8 Disabled
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#define F_CPU 8000000UL
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// Includes
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#include <util/delay.h>
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#include <avr/interrupt.h>
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#include <avr/io.h>
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#include <avr/pgmspace.h>
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// Bitpopelei
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#define set_bit(var, bit) ((var) |= (1 << (bit)))
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#define clear_bit(var, bit) ((var) &= (unsigned)~(1 << (bit)))
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// Bool
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#define FALSE 0
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#define TRUE 1
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// Definitionen
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#define PIXEL_TON 30
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#define PIXEL_TOFF 10
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// Cube-Array
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unsigned char cube[3][3][3];
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unsigned char buffer[3][3][3]; // Framebuffer
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// Prototypen
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void init();
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// Programmzähler
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unsigned int program_counter = 0;
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// Framezähler
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volatile unsigned char frame_counter = 0, fps = 0;
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// Pixelmakros
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#define PSET(x,y,z) (0b01000000 | ((z * 3 + x) + y * 9))
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#define PCLEAR(x,y,z) (0b00000000 | ((z * 3 + x) + y * 9))
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// Instructions
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#define CLEAR 0b10000000
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#define SET 0b10010000
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#define FPS 0b10110000
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#define NEXT 0b11110000
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// Variablen
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#define VAR_FPS 0
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// Für CLEAR und SET
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#define CLEAR_ALL 0
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#define SET_ALL 0
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// Für NEXT
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#define JUMP_FORWARD 1
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#define JUMP_BACKWARD 2
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// Programmcode
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const prog_char program_1[] =
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{
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FPS, 10,
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CLEAR, SET + 12, NEXT, CLEAR, SET + 14, NEXT, // Vor- und zurück tanzen
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CLEAR, SET + 12, NEXT, CLEAR, SET + 14, NEXT,
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CLEAR, SET + 12, NEXT, CLEAR, SET + 15, NEXT,
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CLEAR, SET + 12, NEXT, CLEAR, SET + 15,
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FPS, 5, CLEAR, SET + 8, NEXT, CLEAR, SET + 14, NEXT, // Umdrehung
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FPS, 5, CLEAR, SET + 2, NEXT, CLEAR, SET + 15, NEXT,
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FPS, 6, CLEAR, SET + 8, NEXT, CLEAR, SET + 14, NEXT,
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FPS, 6, CLEAR, SET + 2, NEXT, CLEAR, SET + 15, NEXT,
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FPS, 7, CLEAR, SET + 8, NEXT, CLEAR, SET + 14, NEXT,
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FPS, 7, CLEAR, SET + 2, NEXT, CLEAR, SET + 15, NEXT,
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FPS, 8, CLEAR, SET + 8, NEXT, CLEAR, SET + 14, NEXT,
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FPS, 8, CLEAR, SET + 2, NEXT, CLEAR, SET + 15, NEXT,
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FPS, 9, CLEAR, SET + 8, NEXT, CLEAR, SET + 14, NEXT,
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FPS, 9, CLEAR, SET + 2, NEXT, CLEAR, SET + 15, NEXT,
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FPS, 10, CLEAR, SET + 8, NEXT, CLEAR, SET + 14, NEXT,
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FPS, 10, CLEAR, SET + 2, NEXT, CLEAR, SET + 15, NEXT,
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CLEAR, SET + 8, NEXT, CLEAR, SET + 12, NEXT, // Umfallen
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CLEAR, SET + 4, NEXT, CLEAR, SET + 5, NEXT, CLEAR, SET + 6, NEXT, // Ebenen
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CLEAR, SET + 1, NEXT, CLEAR, SET + 2, NEXT, CLEAR, SET + 3, NEXT,
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CLEAR, SET + 7, NEXT, CLEAR, SET + 8, NEXT, CLEAR, SET + 9, NEXT,
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FPS, 10, // Außen langlaufen
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CLEAR,
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PSET(0,0,0), PSET(1,0,0), PSET(0,1,0), PSET(1,1,0), PSET(0,2,0), PSET(1,2,0), NEXT,
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PCLEAR(0,0,0), PSET(2,0,0), PCLEAR(0,1,0), PSET(2,1,0), PCLEAR(0,2,0), PSET(2,2,0), NEXT,
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PCLEAR(1,0,0), PSET(2,0,1), PCLEAR(1,1,0), PSET(2,1,1), PCLEAR(1,2,0), PSET(2,2,1), NEXT,
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PCLEAR(2,0,0), PSET(2,0,2), PCLEAR(2,1,0), PSET(2,1,2), PCLEAR(2,2,0), PSET(2,2,2), NEXT,
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PCLEAR(2,0,1), PSET(1,0,2), PCLEAR(2,1,1), PSET(1,1,2), PCLEAR(2,2,1), PSET(1,2,2), NEXT,
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PCLEAR(2,0,2), PSET(0,0,2), PCLEAR(2,1,2), PSET(0,1,2), PCLEAR(2,2,2), PSET(0,2,2), NEXT,
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PCLEAR(1,0,2), PSET(0,0,1), PCLEAR(1,1,2), PSET(0,1,1), PCLEAR(1,2,2), PSET(0,2,1), NEXT,
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PCLEAR(0,0,2), PSET(0,0,0), PCLEAR(0,1,2), PSET(0,1,0), PCLEAR(0,2,2), PSET(0,2,0), NEXT,
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PCLEAR(0,0,1), PCLEAR(0,1,1), PCLEAR(0,2,1),
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SET + 7, NEXT, CLEAR, SET + 8, NEXT, CLEAR, SET + 9, NEXT,
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CLEAR, SET + 8, NEXT, CLEAR, SET + 7, NEXT,
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};
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const prog_char *program_pointer = program_1;
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unsigned int program_length = sizeof(program_1);
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// Main
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int main(void)
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{
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// Initialisierung
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init();
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// Hauptschleife
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while (1)
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{
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unsigned char instruction = pgm_read_byte(&(program_pointer[program_counter]));
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if ((instruction & 0b10000000) == 0)
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// Pixel
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{
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unsigned char coord = instruction & 0b00111111; // Uns interessieren nur die 6 untersten Bits
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unsigned char y = coord / 9;
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unsigned char x = (coord - y * 9) % 3;
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unsigned char z = (coord - y * 9) / 3;
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buffer[x][y][z] = (instruction & 0b01000000) / 0b01000000;
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}
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else
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// Instruction
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{
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unsigned char operation = instruction & 0b11110000; // Uns interessieren nur die 4 obersten Bits
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if (operation == CLEAR || operation == SET)
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{
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unsigned char frame = instruction & 0b00001111;
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// Folgende Werte entsprechen SET_ALL
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unsigned char x_min = 0, x_max = 3, y_min = 0, y_max = 3, z_min = 0, z_max = 3;
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// Folgendes kann noch optimiert werden.
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// Y-Z-Ebene (links, mitte, rechts)
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if (frame == 1) { x_min = 0; x_max = 1; }
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if (frame == 2) { x_min = 1; x_max = 2; }
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if (frame == 3) { x_min = 2; x_max = 3; }
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// X-Z-Ebene (unten, mitte, oben)
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if (frame == 4) { y_min = 0; y_max = 1; }
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if (frame == 5) { y_min = 1; y_max = 2; }
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if (frame == 6) { y_min = 2; y_max = 3; }
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// X-Y-Ebene (hinten, mitte, vorne)
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if (frame == 7) { z_min = 0; z_max = 1; }
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if (frame == 8) { z_min = 1; z_max = 2; }
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if (frame == 9) { z_min = 2; z_max = 3; }
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if (frame < 10)
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{
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for (unsigned char z = z_min; z < z_max; z++)
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for (unsigned char y = y_min; y < y_max; y++)
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for (unsigned char x = x_min; x < x_max; x++)
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if (operation == SET) buffer[x][y][z] = 1; else buffer[x][y][z] = 0;
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} else
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{
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for (unsigned char a = 0; a < 3; a++)
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for (unsigned char b = 0; b < 3; b++)
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{
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unsigned char x = 0, y = 0, z = 0;
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if (frame == 10) { x = a; y = b; z = b; } // Unten hinten nach oben vorne
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if (frame == 11) { x = a; y = a; z = b; } // Unten links nach oben rechts
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if (frame == 12) { x = a; y = b; z = 2 - b; } // Unten vorne nach oben hinten
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if (frame == 13) { x = a; y = 2 - a; z = b; } // Oben links nach unten rechts
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if (frame == 14) { x = b; y = a; z = b; } // Hinten links nach vorne rechts
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if (frame == 15) { x = a; y = 2 - b; z = 2 - a; } // Vorne links nach hinten rechts
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if (operation == SET) buffer[x][y][z] = 1; else buffer[x][y][z] = 0;
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}
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}
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} else
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if (operation == FPS)
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{
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if (program_counter + 1 < program_length) program_counter++; // else: Fehler
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unsigned char byte = pgm_read_byte(&(program_pointer[program_counter]));
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fps = byte;
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} else
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if (operation == NEXT)
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{
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// VAR_FPS = 0: Frame nicht zeichnen, keine Wartezeit
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if (fps > 0)
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{
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// Temporäres Array ins "echte" Array kopieren
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for (unsigned char z = 0; z < 3; z++)
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for (unsigned char y = 0; y < 3; y++)
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for (unsigned char x = 0; x < 3; x++)
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cube[x][y][z] = buffer[x][y][z];
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for (unsigned char i = 0; i < fps; i++)
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{
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_delay_ms(5);
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}
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}
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}
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}
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// Programmzähler erhöhen, bzw. bei Erreichen des Programmendes wieder von vorn beginnen
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if (program_counter + 1 < program_length) program_counter++; else program_counter = 0;
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}
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}
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// Initialisierung
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void init()
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{
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// Ports vorbereiten
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DDRB = 0b11111111; // PB0-PB7: LED 1-8 (Kathoden)
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PORTB = 0b11111111; // HIGH
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DDRD = 0b1111000; // PD6: LED 9 (Kathode); PD5-PD3: A-C (Anoden)
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PORTD = 0b1000000;
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// Timer-Interrupt "TIMER1" vorbereiten
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cli();
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set_bit(TIMSK, OCIE1A);
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set_bit(TCCR1B, WGM12);
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// Animations-Geschwindigkeit
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OCR1AH = 0x01;
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OCR1AL = 0x00;
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clear_bit(TCCR1B, CS12); // Prescaler 64
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set_bit(TCCR1B, CS11);
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set_bit(TCCR1B, CS10);
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sei();
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}
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// Interruptvektor von TIMER1
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SIGNAL(SIG_OUTPUT_COMPARE1A)
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{
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// Pixel multiplexen
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for (unsigned char z = 0; z < 3; z++)
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{
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for (unsigned char y = 0; y < 3; y++)
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{
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for (unsigned char x = 0; x < 3; x++)
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{
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unsigned char n = z * 3 + x;
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// LED an
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if (cube[x][y][z] == 1)
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{
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if (n < 8) clear_bit(PORTB, n); else clear_bit(PORTD, 6);
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set_bit(PORTD, y + 3);
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}
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// ON-Time
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for (unsigned long i = 0; i < PIXEL_TON; i++) { asm volatile("nop"::); }
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// LED aus
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if (cube[x][y][z] == 1)
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{
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clear_bit(PORTD, y + 3);
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if (n < 8) set_bit(PORTB, n); else set_bit(PORTD, 6);
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}
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// OFF-Time
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for (unsigned long i = 0; i < PIXEL_TOFF; i++) { asm volatile("nop"::); }
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}
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}
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}
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}
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