106 lines
2.6 KiB
C
106 lines
2.6 KiB
C
/*
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* CTHN.de MiniLEDCube
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*
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* By Kai Lauterbach (klaute at web dot de) 11/2011
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*
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* Based on http://mosfetkiller.de/?s=miniledcube
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*
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* License: General Public License (GPL v3)
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*
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*/
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#include "main.h"
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// Main loop
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int __attribute__((OS_main))
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main()
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{
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// Initialize the AVR and the USB connection.
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init();
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init_usb();
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// Hauptschleife
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for (;;)
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{
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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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// Init ports
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DDRB = 0b11111111; // PB0-PB7: LED 1-8 (Kathode)
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PORTB = 0b11111111; // HIGH
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DDRD = 0b01111000; // PD6: LED 9 (Kathode); PD5-PD3: A-C (Anoden)
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PORTD = 0b01000000;
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// Setup Timer-Interrupt "TIMER1"
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TIMSK |= (1 << OCIE1A);
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// Refreshrate is 100Hz
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// Set the compare value
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// 625d = 0x271 = 0b00000010, 0b01110001
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OCR1AH = 0b00000010;
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OCR1AL = 0b01110001;
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// anpassen auf reihenweise ausgabe
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// prescale is 64 (0x011) ----> CS12=0, CS11=1, CS10=1
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TCCR1B |= (1 << CS11) | (1 << CS10) | (1 << WGM12);
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sei(); // Enable interrupts global
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}
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// TIMER1 Interruptvector
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ISR (TIMER1_COMPA_vect)
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{
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delay--; // decrease the delay counter
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if ( !delay ) // check if we are done with waiting
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{
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if (frmnum == MAX_EEPROM_FRAMES)
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{
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if (mode == MODE_ANIMATION_SINGLE)
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mode = MODE_ANIMATION_STOP; // stop the animation after we have reached the 31th frame
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frmnum = 0; // always start at the first frame
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} else {
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if (mode)
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{
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// if we are in an animation mode we have to load a frame out of the eeprom
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// and increase the counter
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loadEEPROMFrame(frmnum);
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frmnum++;
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}
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}
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delay = delay_max; // start counting from the top of the maximum delay
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}
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// PORTD = __, 9, C, B, A,D+,D-,__
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PORTD &= 0b10000111; // delete bit 3 to 6 (bit 3 to 5 = layer 0 to 2; bit 6 = wire 9 to the LEDs)
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PORTD |= (1 << 6) | ((1 << level) << 3); // set the current level and pin 6 to high (9th LEDs off)
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uint8_t tmp = level * 9; // calculate the position in the frame
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// PORTB = 1..8
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// 0 = led is on, 1 = led is off
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PORTB = ~((frame >> tmp) & 0xff);
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if ( (((frame >> tmp) >> 8) & 0x01) )
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PORTD &= ~(1 << 6); // turn the 9th LED on if required
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// rotate through the 3 level
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level++;
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if (level > 2) level = 0;
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}
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/**
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* Simple function to load a single frame out of the EEPROM.
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*/
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void loadEEPROMFrame(uint8_t f)
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{
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frame = eeprom_read_dword( &eep_anim[f] );
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}
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