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Introduce Comparator firmware application with dual voltage comparators, calibration, and UI for parameter control.

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Adam Wonak
2026-03-07 23:34:12 -08:00
parent f88f52c4ee
commit 24d981886a
2 changed files with 385 additions and 1 deletions
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15
src/analog_input.h
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@ -42,7 +42,8 @@ public:
old_read_ = read_;
int raw = analogRead(pin_);
read_ = map(raw, 0, MAX_INPUT, low_, high_);
read_ = constrain(read_ - offset_, -512, 512);
// Cast to long to avoid AVR 16-bit integer overflow prior to constraining
read_ = constrain((long)read_ - (long)offset_, -512, 512);
if (inverted_)
read_ = -read_;
}
@ -53,8 +54,20 @@ public:
void AdjustCalibrationHigh(int amount) { high_ += amount; }
void SetCalibrationLow(int low) { low_ = low; }
void SetCalibrationHigh(int high) { high_ = high; }
int GetCalibrationLow() const { return low_; }
int GetCalibrationHigh() const { return high_; }
void SetOffset(float percent) { offset_ = -(percent) * 512; }
void AdjustOffset(int amount) { offset_ += amount; }
int GetOffset() const { return offset_; }
void SetAttenuation(float percent) {
low_ = abs(percent) * CALIBRATED_LOW;
high_ = abs(percent) * CALIBRATED_HIGH;