ash
8bde8efaff
- Remove fixed 0-4095 mapping, use cal_min/cal_max instead - Auto-calibrate minimum at boot (assumes pedal at heel) - 'cal min' sets current position as heel (0) - 'cal max' sets current position as toe (127) - Map cal_min->0, cal_max->127 with clamping - Update 'exp' command to show raw ADC + cal values
37 lines
830 B
C++
37 lines
830 B
C++
#pragma once
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#include <cstdint>
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class UsbMidiTransport;
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class ExpressionPedal {
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public:
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ExpressionPedal(uint8_t adc_pin = 5);
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void begin();
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void update(UsbMidiTransport& midi);
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uint8_t get_value() const { return current_value; }
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uint16_t get_raw() const { return current_raw; }
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void set_cal_min();
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void set_cal_max();
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uint16_t get_cal_min() const { return cal_min; }
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uint16_t get_cal_max() const { return cal_max; }
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private:
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uint8_t adc_pin;
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uint8_t current_value;
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uint8_t last_sent_value;
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uint8_t midi_channel;
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uint8_t midi_cc;
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static const uint8_t HYSTERESIS = 3;
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static const uint16_t READ_INTERVAL_MS = 20;
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uint32_t last_read_time;
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uint16_t current_raw;
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uint16_t cal_min;
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uint16_t cal_max;
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uint8_t adc_to_midi(uint16_t adc_value);
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};
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