64 lines
1.4 KiB
C++
64 lines
1.4 KiB
C++
/**
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* @file analog_input.h
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* @author Adam Wonak (https://github.com/awonak)
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* @brief Class for interacting with analog inputs.
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* @version 0.1
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* @date 2025-05-23
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*
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* @copyright Copyright (c) 2025
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*
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*/
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#ifndef ANALOG_INPUT_H
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#define ANALOG_INPUT_H
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const int MAX_INPUT = (1 << 10) - 1; // Max 10 bit analog read resolution.
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class AnalogInput {
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public:
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AnalogInput() {}
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~AnalogInput() {}
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/**
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* @brief Initializes a analog input object.
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*
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* @param pin gpio pin for the analog input.
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*/
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void Init(uint8_t pin) {
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pinMode(pin, INPUT);
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pin_ = pin;
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}
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/**
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* @brief Read the value of the analog input.
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*
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*/
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void Process() {
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old_read_ = read_;
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int raw = analogRead(pin_);
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read_ = map(raw, calibration_offset_, MAX_INPUT, calibration_low_, calibration_high_);
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}
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// Set calibration values.
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void AdjustCalibrationLow(int val) { calibration_low_ += val; }
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void AdjustCalibrationOffset(int val) { calibration_offset_ += val; }
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void AdjustCalibrationHigh(int val) { calibration_high_ += val; }
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/**
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* @brief Get the current value of the analog input within a range of +/-512.
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*
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* @return InputState
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*/
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inline int16_t Read() { return read_; }
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private:
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uint8_t pin_;
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int16_t read_;
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uint16_t old_read_;
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int calibration_offset_ = 0;
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int calibration_low_ = -512;
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int calibration_high_ = 512;
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};
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#endif
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