Changes from last meeting.
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2 changed files with 22 additions and 34 deletions
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@ -23,6 +23,9 @@ int main(void)
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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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// hier pause einfügen
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_delay_ms(50); // beispielsweise 50 ms => muss angepasst werden an usb kommunikation
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}
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}
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@ -43,9 +46,11 @@ void init()
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set_bit(TCCR1B, WGM12);
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// Animations-Geschwindigkeit
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// (vergleichswert bei dem der Interrupt ausgelöst wird)
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OCR1AH = 0x01;
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OCR1AL = 0x00;
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// anpassen auf reihenweise ausgabe
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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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@ -54,38 +59,22 @@ void init()
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}
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// Interruptvektor von TIMER1
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SIGNAL(SIG_OUTPUT_COMPARE1A)
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//SIGNAL(SIG_OUTPUT_COMPARE1A) // alte schreibweise
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ISR (TIMER1_COMPA_vect)
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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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// Alle Pins von PORTD auf LOW setzen
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// Höchstes Bit in PORTA auf 0 setzen (Leitung 9 für letzte Reihe)
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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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// bei cube_row_offset % 3 eine Ebene weiter schalten (ABC-Leitungen durch rotieren)
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// bei Systemstart muss A aktiviert sein.
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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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// bits der anzuzeigenden reihe auslesen (cube & (0b00000111 << cube_row_offset))
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// und in PORTD und Pin 8 von PORTA setzen
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// cube_row_offset += 3 // immer um 3 Bits weiter springen in 32Bit Variable
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// cube_row_offset auf 0 setzen wenn maximum überschritten (27-3 = 24)
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}
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@ -15,15 +15,14 @@
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#include <avr/interrupt.h>
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#include <avr/io.h>
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//#include <util/delay.h>
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#include <util/delay.h>
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//#include <avr/pgmspace.h>
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//#include <avr/wdt.h>
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// Cube-Array
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uint8_t cube[3][3][3];
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uint8_t buffer[3][3][3]; // Framebuffer
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volatile uint8_t frame_done = 0;
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// Cube-Data
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volatile uint32_t cube = 0x00000000;
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// Bit Offset in Cube-Data
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volatile uint8_t cube_row_offset = 0x00;
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// Prototypen
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void init(void);
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