Kai Lauterbach
9ce06c0292
* Some interferrences with the two timers (usb/led) * Big cleanup from the codebase and separate logical parts * Documenting the code * Big space optimizations on the code to fit on the AVR
91 lines
1.9 KiB
C
91 lines
1.9 KiB
C
/*
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* Based on the code of the 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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*
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* Changed by Kai Lauterbach (klaute at web dot de)
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*/
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#include "main.h"
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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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init_usb();
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// Hauptschleife
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//while (1)
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for (;;)
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{
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//wdt_reset(); // we are alive, so don't reset the µC
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usbPoll(); // keep connected
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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 (uint8_t z = 0; z < 3; z++)
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{
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for (uint8_t y = 0; y < 3; y++)
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{
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for (uint8_t x = 0; x < 3; x++)
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{
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uint8_t 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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sleep_nop(PIXEL_TON);
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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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sleep_nop(PIXEL_TOFF)
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}
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}
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}
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}
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