Fix fan curve saving - use flat config structure for WLED compatibility
- Changed from nested JSON array to flat curve-t1/s1, curve-t2/s2, etc. - Added appendConfigData() for config page labels - Reduced max curve points to 5 for simpler config - Added bounds checking for speed values
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@ -10,7 +10,7 @@
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* Features:
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* - Web API for temperature updates from external sources (GPU, etc.)
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* - Fixed speed mode with configurable percentage
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* - Temperature curve mode with up to 10 configurable points
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* - Temperature curve mode with up to 5 configurable points
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* - Safety fallback to 100% if temperature data times out
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* - Integration with WLED's web interface
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*
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@ -54,19 +54,24 @@ class GPUFanControllerUsermod : public Usermod {
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ControlMode controlMode = MODE_CURVE;
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uint8_t fixedSpeedPct = 50; // 0-100%
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// Temperature curve (up to 10 points)
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static const uint8_t MAX_CURVE_POINTS = 10;
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// Temperature curve - using flat structure for WLED config compatibility
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// 5 curve points with separate temp and speed values
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static const uint8_t MAX_CURVE_POINTS = 5;
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uint8_t curveCount = 4;
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struct CurvePoint {
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float temp;
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uint8_t speed;
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};
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CurvePoint curve[MAX_CURVE_POINTS] = {
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{30.0f, 30},
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{50.0f, 50},
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{70.0f, 75},
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{85.0f, 100}
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};
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// Curve point temperatures (°C)
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int16_t curveTemp1 = 30;
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int16_t curveTemp2 = 50;
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int16_t curveTemp3 = 70;
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int16_t curveTemp4 = 85;
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int16_t curveTemp5 = 95;
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// Curve point speeds (%)
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uint8_t curveSpeed1 = 30;
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uint8_t curveSpeed2 = 50;
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uint8_t curveSpeed3 = 75;
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uint8_t curveSpeed4 = 100;
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uint8_t curveSpeed5 = 100;
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// Runtime state
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float currentTemp = 25.0f;
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@ -132,28 +137,57 @@ class GPUFanControllerUsermod : public Usermod {
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#endif
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}
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// Get curve temperature at index
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int16_t getCurveTemp(uint8_t idx) {
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switch(idx) {
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case 0: return curveTemp1;
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case 1: return curveTemp2;
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case 2: return curveTemp3;
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case 3: return curveTemp4;
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case 4: return curveTemp5;
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default: return 50;
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}
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}
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// Get curve speed at index
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uint8_t getCurveSpeed(uint8_t idx) {
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switch(idx) {
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case 0: return curveSpeed1;
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case 1: return curveSpeed2;
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case 2: return curveSpeed3;
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case 3: return curveSpeed4;
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case 4: return curveSpeed5;
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default: return 50;
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}
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}
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// Calculate fan speed from temperature curve
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uint8_t calculateCurveSpeed(float temp) {
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if (curveCount < 2) return 50; // Fallback
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// Below first point
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if (temp <= curve[0].temp) {
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return curve[0].speed;
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if (temp <= getCurveTemp(0)) {
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return getCurveSpeed(0);
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}
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// Above last point
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if (temp >= curve[curveCount - 1].temp) {
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return curve[curveCount - 1].speed;
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if (temp >= getCurveTemp(curveCount - 1)) {
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return getCurveSpeed(curveCount - 1);
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}
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// Linear interpolation between points
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for (uint8_t i = 0; i < curveCount - 1; i++) {
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if (temp >= curve[i].temp && temp <= curve[i + 1].temp) {
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float tempRange = curve[i + 1].temp - curve[i].temp;
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float speedRange = curve[i + 1].speed - curve[i].speed;
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float tempDiff = temp - curve[i].temp;
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int16_t t1 = getCurveTemp(i);
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int16_t t2 = getCurveTemp(i + 1);
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uint8_t s1 = getCurveSpeed(i);
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uint8_t s2 = getCurveSpeed(i + 1);
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int speed = curve[i].speed + (int)((tempDiff / tempRange) * speedRange);
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if (temp >= t1 && temp <= t2) {
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float tempRange = t2 - t1;
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float speedRange = s2 - s1;
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float tempDiff = temp - t1;
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int speed = s1 + (int)((tempDiff / tempRange) * speedRange);
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return constrain(speed, 0, 100);
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}
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}
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@ -310,16 +344,39 @@ class GPUFanControllerUsermod : public Usermod {
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top["pwm-pin"] = pwmPin;
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top["mode"] = (int)controlMode;
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top["fixed-speed"] = fixedSpeedPct;
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top["timeout-ms"] = tempTimeoutMs;
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top["timeout-ms"] = (int)tempTimeoutMs;
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top["curve-points"] = curveCount;
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// Save curve points
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top["curve-count"] = curveCount;
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JsonArray curveArr = top.createNestedArray("curve");
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for (uint8_t i = 0; i < curveCount; i++) {
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JsonObject point = curveArr.createNestedObject();
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point["temp"] = curve[i].temp;
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point["speed"] = curve[i].speed;
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// Save curve points as flat values
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top["curve-t1"] = curveTemp1;
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top["curve-t2"] = curveTemp2;
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top["curve-t3"] = curveTemp3;
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top["curve-t4"] = curveTemp4;
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top["curve-t5"] = curveTemp5;
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top["curve-s1"] = curveSpeed1;
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top["curve-s2"] = curveSpeed2;
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top["curve-s3"] = curveSpeed3;
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top["curve-s4"] = curveSpeed4;
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top["curve-s5"] = curveSpeed5;
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}
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// Append config data (labels for config page)
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void appendConfigData() override {
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oappend(SET_F("addInfo('GPU-Fan:pwm-pin',1,'GPIO');"));
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oappend(SET_F("addInfo('GPU-Fan:mode',1,'0=Fixed, 1=Curve');"));
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oappend(SET_F("addInfo('GPU-Fan:fixed-speed',1,'%');"));
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oappend(SET_F("addInfo('GPU-Fan:timeout-ms',1,'ms (safety timeout)');"));
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oappend(SET_F("addInfo('GPU-Fan:curve-points',1,'2-5 points');"));
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oappend(SET_F("addInfo('GPU-Fan:curve-t1',1,'°C (Point 1 temp)');"));
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oappend(SET_F("addInfo('GPU-Fan:curve-s1',1,'% (Point 1 speed)');"));
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oappend(SET_F("addInfo('GPU-Fan:curve-t2',1,'°C (Point 2 temp)');"));
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oappend(SET_F("addInfo('GPU-Fan:curve-s2',1,'% (Point 2 speed)');"));
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oappend(SET_F("addInfo('GPU-Fan:curve-t3',1,'°C (Point 3 temp)');"));
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oappend(SET_F("addInfo('GPU-Fan:curve-s3',1,'% (Point 3 speed)');"));
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oappend(SET_F("addInfo('GPU-Fan:curve-t4',1,'°C (Point 4 temp)');"));
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oappend(SET_F("addInfo('GPU-Fan:curve-s4',1,'% (Point 4 speed)');"));
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oappend(SET_F("addInfo('GPU-Fan:curve-t5',1,'°C (Point 5 temp)');"));
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oappend(SET_F("addInfo('GPU-Fan:curve-s5',1,'% (Point 5 speed)');"));
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}
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// Load configuration
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@ -336,23 +393,28 @@ class GPUFanControllerUsermod : public Usermod {
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newPwmPin = top["pwm-pin"] | newPwmPin;
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controlMode = (ControlMode)(top["mode"] | (int)controlMode);
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fixedSpeedPct = top["fixed-speed"] | fixedSpeedPct;
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tempTimeoutMs = top["timeout-ms"] | tempTimeoutMs;
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// Load curve points
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curveCount = top["curve-count"] | curveCount;
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tempTimeoutMs = top["timeout-ms"] | (int)tempTimeoutMs;
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curveCount = top["curve-points"] | curveCount;
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curveCount = constrain(curveCount, 2, MAX_CURVE_POINTS);
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JsonArray curveArr = top["curve"];
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if (!curveArr.isNull()) {
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uint8_t i = 0;
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for (JsonObject point : curveArr) {
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if (i >= MAX_CURVE_POINTS) break;
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curve[i].temp = point["temp"] | curve[i].temp;
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curve[i].speed = point["speed"] | curve[i].speed;
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i++;
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}
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curveCount = i;
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}
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// Load curve points
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curveTemp1 = top["curve-t1"] | curveTemp1;
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curveTemp2 = top["curve-t2"] | curveTemp2;
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curveTemp3 = top["curve-t3"] | curveTemp3;
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curveTemp4 = top["curve-t4"] | curveTemp4;
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curveTemp5 = top["curve-t5"] | curveTemp5;
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curveSpeed1 = top["curve-s1"] | curveSpeed1;
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curveSpeed2 = top["curve-s2"] | curveSpeed2;
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curveSpeed3 = top["curve-s3"] | curveSpeed3;
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curveSpeed4 = top["curve-s4"] | curveSpeed4;
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curveSpeed5 = top["curve-s5"] | curveSpeed5;
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// Constrain speed values
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curveSpeed1 = constrain(curveSpeed1, 0, 100);
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curveSpeed2 = constrain(curveSpeed2, 0, 100);
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curveSpeed3 = constrain(curveSpeed3, 0, 100);
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curveSpeed4 = constrain(curveSpeed4, 0, 100);
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curveSpeed5 = constrain(curveSpeed5, 0, 100);
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if (!initDone) {
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pwmPin = newPwmPin;
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@ -366,7 +428,7 @@ class GPUFanControllerUsermod : public Usermod {
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}
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}
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return !top["curve-count"].isNull();
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return !top["curve-t1"].isNull();
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}
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uint16_t getId() override {
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