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50 lines
918 B
Plaintext
50 lines
918 B
Plaintext
15 years ago
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// digital pins 2-7 => kathoden 0-5
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// analog pins 3-5 => kathoden 6-8
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// analog pins 0-2 => anoden A0, B1, C2
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volatile int matrix[9];
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void setup() {
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// digital pins 2-7
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DDRD |= 0b11111100;
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// analog pins 0-2 + 3-5
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DDRC |= 0b00111111;
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matrix = {
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// ebene 0
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0b101,
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0b000,
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0b101,
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// ebene 1
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0b000,
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0b010,
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0b000,
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// ebene 2
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0b101,
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0b000,
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0b101,
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};
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}
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void loop() {
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for(int ebene=0; ebene<=2; ebene++) {
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// *erst* kathoden auf 1 (leuchtet nicht)
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PORTD |= 0b11111100;
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PORTC |= 0b00111000;
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// anoden auf 0
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PORTC &= 0b11111000;
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// unsere anode auf 1
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PORTC |= _BV(ebene+0);
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// kathoden 0-2 => digital-pins 2-4
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PORTD &= ~(matrix[3*ebene + 0] << 2);
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// kathoden 3-5 => digital-pins 5-7
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PORTD &= ~(matrix[3*ebene + 1] << 5);
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// kathoden 6-8 => analog-pins 3-5
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PORTC &= ~(matrix[3*ebene + 2] << 3);
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}
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}
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