95 lines
2.3 KiB
C++
95 lines
2.3 KiB
C++
/**
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* @file digital_output.h
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* @author Adam Wonak (https://github.com/awonak)
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* @brief Class for interacting with trigger / gate outputs.
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* @version 0.1
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* @date 2025-04-17
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*
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* @copyright MIT - (c) 2025 - Adam Wonak - adam.wonak@gmail.com
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*
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*/
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#ifndef DIGITAL_OUTPUT_H
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#define DIGITAL_OUTPUT_H
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#include <Arduino.h>
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const byte DEFAULT_TRIGGER_DURATION_MS = 5;
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class DigitalOutput {
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public:
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/**
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* Initializes an CV Output paired object.
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*
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* @param cv_pin gpio pin for the cv output
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*/
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void Init(uint8_t cv_pin) {
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pinMode(cv_pin, OUTPUT); // Gate/Trigger Output
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cv_pin_ = cv_pin;
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trigger_duration_ = DEFAULT_TRIGGER_DURATION_MS;
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}
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/**
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* Set the trigger duration in miliseconds.
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*
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* @param duration_ms trigger duration in miliseconds
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*/
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void SetTriggerDuration(uint8_t duration_ms) {
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trigger_duration_ = duration_ms;
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}
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/**
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* Turn the CV and LED on or off according to the input state.
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*
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* @param state Arduino digital HIGH or LOW values.
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*/
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inline void Update(uint8_t state) {
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if (state == HIGH) High(); // Rising
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if (state == LOW) Low(); // Falling
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}
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// Sets the cv output HIGH to about 5v.
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inline void High() { update(HIGH); }
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// Sets the cv output LOW to 0v.
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inline void Low() { update(LOW); }
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/**
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* Begin a Trigger period for this output.
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*/
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inline void Trigger() {
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update(HIGH);
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last_triggered_ = millis();
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}
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/**
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* Return a bool representing the on/off state of the output.
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*/
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inline void Process() {
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// If trigger is HIGH and the trigger duration time has elapsed, set the output low.
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if (on_ && (millis() - last_triggered_) >= trigger_duration_) {
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update(LOW);
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}
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}
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/**
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* Return a bool representing the on/off state of the output.
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*
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* @return true if current cv state is high, false if current cv state is low
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*/
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inline bool On() { return on_; }
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private:
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unsigned long last_triggered_;
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uint8_t trigger_duration_;
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uint8_t cv_pin_;
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uint8_t led_pin_;
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bool on_;
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void update(uint8_t state) {
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digitalWrite(cv_pin_, state);
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on_ = state == HIGH;
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}
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};
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#endif
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