33 lines
699 B
C++
33 lines
699 B
C++
#include "Matrix.h"
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Matrix::Matrix(uint8_t* columns, uint8_t num_columns, bool inverted) {
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this->active_pin = 255; // sentinel value, highest possible 8-bit number
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this->inverted = inverted;
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for (uint8_t i = 0; i < num_columns; i++) {
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pinMode(columns[i], OUTPUT);
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_disable(columns[i]);
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}
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}
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void Matrix::Activate(uint8_t pin) {
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if (pin == active_pin) return;
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if (active_pin != 255) {
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_disable(active_pin);
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}
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_enable(pin);
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active_pin = pin;
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}
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void Matrix::_enable(uint8_t pin) {
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if (inverted) digitalWrite(pin, LOW);
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else digitalWrite(pin, HIGH);
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}
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void Matrix::_disable(uint8_t pin) {
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if (inverted) digitalWrite(pin, HIGH);
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else digitalWrite(pin, LOW);
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}
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