84 lines
2.2 KiB
C
84 lines
2.2 KiB
C
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#pragma once
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#include <stdint.h>
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#include <ESP32Servo.h> // To control the servo
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/**
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* @brief A controller for the button control servo
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*
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* The controller simply configures the servo for operation,
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* and then sets the desired servo value for the 'pressed' and 'released' states.
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* The controller requires periodic updating through the `loop()` function
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* in order to release the button after the specified time.
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*
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*/
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class ServoController {
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public:
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/**
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* @brief Construct a new Servo Controller object
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*
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* @param timer The timer to use for the servo control
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* @param frequency The servo frequency (depending on the model used)
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* @param pin The pin where the servo PWM line is connected
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*/
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ServoController(int timer, int frequency, int pin);
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/**
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* @brief Configure the button values
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*
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* @param openDuration The duration (in ms) for which the button should remain pressed
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* @param pressedValue The servo value (in µs) that specifies the 'pressed' state
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* @param releasedValue The servo value (in µs) that specifies the 'released' state
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*/
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void configure(uint32_t openDuration, int pressedValue, int releasedValue);
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/**
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* @brief Update the servo state periodically
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*
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* This function should be periodically called to update the servo state,
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* specifically to release the button after the opening time has elapsed.
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*
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* There is no required interval to call this function, but the accuracy of
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* the opening interval is dependent on the calling frequency.
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*/
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void loop();
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/**
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* Push the door opener button down by moving the servo arm.
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*/
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void pressButton();
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/**
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* Release the door opener button by moving the servo arm.
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*/
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void releaseButton();
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private:
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// Indicator that the door button is pushed
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bool buttonIsPressed = false;
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int timer;
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int frequency;
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int pin;
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uint32_t openDuration = 0;
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int pressedValue = 0;
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int releasedValue = 0;
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// The time (in ms since start) when the door opening should end
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uint32_t openingEndTime = 0;
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// Servo controller
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Servo servo;
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// PWM Module needed for the servo
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ESP32PWM pwm;
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};
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