| 66 | } |
| 67 | |
| 68 | u16 Potentiometer::fractional16() const { |
| 69 | // Handle invalid range |
| 70 | if (mMaxValue <= mMinValue) { |
| 71 | return 0; |
| 72 | } |
| 73 | |
| 74 | // Clamp current value to calibrated range |
| 75 | u16 clamped_value; |
| 76 | if (mCurrentValue < mMinValue) { |
| 77 | clamped_value = mMinValue; |
| 78 | } else if (mCurrentValue > mMaxValue) { |
| 79 | clamped_value = mMaxValue; |
| 80 | } else { |
| 81 | clamped_value = mCurrentValue; |
| 82 | } |
| 83 | |
| 84 | // Map calibrated range to [0, 65535] |
| 85 | // Use 32-bit intermediate to avoid overflow |
| 86 | u32 range = mMaxValue - mMinValue; |
| 87 | u32 offset = clamped_value - mMinValue; |
| 88 | u32 scaled = (offset * 65535U) / range; |
| 89 | return static_cast<u16>(scaled); |
| 90 | } |
| 91 | |
| 92 | void Potentiometer::setHysteresisPercent(float percent) { |
| 93 | // Clamp percent to valid range |