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AnalogInput/AnalogInput.ino

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+/*
+  Analog Input
+
+  Demonstrates analog input by reading an analog sensor on analog pin 0 and
+  turning on and off a light emitting diode(LED) connected to digital pin 13.
+  The amount of time the LED will be on and off depends on the value obtained
+  by analogRead().
+
+  The circuit:
+  - potentiometer
+    center pin of the potentiometer to the analog input 0
+    one side pin (either one) to ground
+    the other side pin to +5V
+  - LED
+    anode (long leg) attached to digital output 13
+    cathode (short leg) attached to ground
+
+  - Note: because most Arduinos have a built-in LED attached to pin 13 on the
+    board, the LED is optional.
+
+  created by David Cuartielles
+  modified 30 Aug 2011
+  By Tom Igoe
+
+  This example code is in the public domain.
+
+  http://www.arduino.cc/en/Tutorial/AnalogInput
+*/
+
+int sensorPin = A3;    // select the input pin for the potentiometer
+int ledPin = 13;      // select the pin for the LED
+float sensorValue = 0;  // variable to store the value coming from the sensor
+
+void setup() {
+  // declare the ledPin as an OUTPUT:
+  pinMode(ledPin, OUTPUT);
+  Serial.begin(9600);
+}
+
+void loop() {
+  // read the value from the sensor:
+//  sensorValue = 0;
+//  int bcl = 75;
+//  for (int i=1; i <bcl; i++) {
+//  sensorValue += analogRead(sensorPin);
+//  delay(1);
+//  }
+
+  int number_of_samples = 50;
+  long sum_squared_voltage = 0;
+  for (int n=0; n<number_of_samples; n++)
+  {
+    // inst_voltage calculation from raw ADC input goes here.
+    int inst_voltage = analogRead(A3) - 512;
+    long squared_voltage = inst_voltage * inst_voltage;
+  
+    sum_squared_voltage += squared_voltage;
+   // delay(20);
+  }
+  
+  double mean_square_voltage = sum_squared_voltage / number_of_samples;
+  double root_mean_square_voltage = sqrt(mean_square_voltage);
+//  
+//   sensorValue = analogRead(sensorPin);
+//  Serial.print(sensorValue - 512);
+//  Serial.print(mean_square_voltage);
+//  Serial.print(" V2 ");
+  Serial.print(root_mean_square_voltage);
+  Serial.println(" V ");
+
+//    long sum_squared_current = 0;
+//
+//  for (int n=0; n<number_of_samples; n++)
+//  {
+//    // inst_current calculation from raw ADC input goes here.
+//    int inst_current = analogRead(A5) - 512;
+//
+//    long squared_current = inst_current * inst_current;
+//  
+//    sum_squared_current += squared_current;
+//  }
+//  
+//  double mean_square_current = sum_squared_current / number_of_samples;
+//  double root_mean_square_current = sqrt(mean_square_current);
+//
+//  Serial.print(root_mean_square_current);
+//  Serial.println(" A ");
+
+
+//  sum_squared_current = 0;
+//
+//  for (int n=0; n<number_of_samples; n++)
+//  {
+//    // inst_current calculation from raw ADC input goes here.
+//    int inst_current = analogRead(A5) - 512;
+//
+//    long squared_current = inst_current * inst_current;
+//  
+//    sum_squared_current += squared_current;
+//  }
+//  
+//   mean_square_current = sum_squared_current / number_of_samples;
+//  root_mean_square_current = sqrt(mean_square_current);
+//
+//  Serial.print(root_mean_square_current);
+//  Serial.println(" A ");
+//  Serial.print("moyenne ");
+//  Serial.println(somme / mesure);
+  
+   
+  // turn the ledPin on
+//  digitalWrite(ledPin, HIGH);
+//  // stop the program for <sensorValue> milliseconds:
+//  delay(sensorValue);
+//  // turn the ledPin off:
+//  digitalWrite(ledPin, LOW);
+  // stop the program for for <sensorValue> milliseconds:
+//  delay(1);
+}