first commit

2025-03-06 11:15:32 +01:00
commit 7b30d6e298
5276 changed files with 2108927 additions and 0 deletions
--- a/Ventilateur/Ventilateur.ino
+++ b/Ventilateur/Ventilateur.ino
@@ -0,0 +1,80 @@
+#define FAN_WIRES   4
+#define PWM_PIN     3
+#define SENSOR_PIN  2
+
+#if FAN_WIRES == 4
+volatile unsigned int revs;
+#endif
+
+void setup()
+{
+  Serial.begin(115200);
+  Serial.println("FAN CONTROL");
+  // prescaller for 31.372KHz
+//  TCCR2B &= B11111000;
+//  TCCR2B |= (0 << CS22) | (0 << CS21) | (1 << CS20);
+  digitalWrite(PWM_PIN, LOW);
+  pinMode(PWM_PIN, OUTPUT);
+#if FAN_WIRES == 4
+  attachInterrupt(digitalPinToInterrupt(SENSOR_PIN), interruptHandler, FALLING);
+#endif
+}
+
+void loop()
+{
+  int pwm, pwmGpio;
+
+  for (pwm = 0 ; pwm <= 100 ; pwm += 10) {
+    Serial.print(pwm);
+    Serial.print("%: (");
+    pwmGpio = pwm * 2.5;
+    Serial.print(pwmGpio);
+    Serial.print(") ");
+    analogWrite(PWM_PIN, pwmGpio);
+    delay(2000);
+#if FAN_WIRES == 4
+    Serial.print(" speed = "); Serial.println(getSpeed());
+#else
+    Serial.println();
+#endif
+  }
+  for (pwm = 90 ; pwm >= 0 ; pwm -= 10) {
+    Serial.print(pwm);
+    Serial.print("%: (");
+    pwmGpio = pwm * 2.5;
+    Serial.print(pwmGpio);
+    Serial.print(") ");
+    analogWrite(PWM_PIN, pwmGpio);
+    delay(2000);
+#if FAN_WIRES == 4
+    Serial.print(" speed = "); Serial.println(getSpeed());
+#else
+    Serial.println();
+#endif
+  }
+}
+
+#if FAN_WIRES == 4
+
+unsigned int getSpeed()
+{
+  static unsigned long lastMillis;
+  static unsigned int lastRead;
+  unsigned long elapsed = millis() - lastMillis;
+  if (elapsed > 1000) {
+    detachInterrupt(digitalPinToInterrupt(SENSOR_PIN));
+    double correctionFactor = 1000.0 / elapsed;
+    lastRead = correctionFactor * revs / 2 * 60;
+    revs = 0;
+    lastMillis = millis();
+    attachInterrupt(digitalPinToInterrupt(SENSOR_PIN), interruptHandler, FALLING);
+    return lastRead;
+  }
+}
+
+void interruptHandler(void)
+{
+  revs++;
+}
+
+#endif