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