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ATMEGA_SCT013_I2C_SLAVE/ATMEGA_SCT013_I2C_SLAVE.ino

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+// EmonLibrary examples openenergymonitor.org, Licence GNU GPL V3
+
+#include "EmonLib.h"                   // Include Emon Library
+EnergyMonitor emon_conso;                   // Create an instance
+EnergyMonitor emon_solar; 
+
+#define NB_MESURES  50 
+
+int lectures            = -10;
+double sum_conso        = 0;
+double sum_solar        = 0;
+double last_conso_value = 0;
+double last_solar_value = 0;
+const int buttonPin = 2;     // the number of the pushbutton pin
+boolean isDark = false;
+  
+#include <Wire.h> 
+//#include <LiquidCrystal_I2C.h>
+#include "LowPower.h"
+
+#define I2C_SLAVE_ADDRESS 0x0B // 12 pour l'esclave 2 et ainsi de suite
+#define PAYLOAD_SIZE 2
+
+//LiquidCrystal_I2C lcd(0x27,16,2);  // set the LCD address to 0x27 for a 16 chars and 2 line display
+
+#include <ezButton.h>
+ezButton button(7);  // create ezButton object that attach to pin 7;
+
+
+void setup()
+{  
+  Serial.begin(9600);
+  
+  emon_conso.current(0, 60);             // Current: input pin, calibration.
+  emon_solar.current(1, 60);
+
+  Wire.begin(I2C_SLAVE_ADDRESS);
+  Serial.begin(9600); 
+  Serial.println("Slave -------------------------------------I am Slave1");
+  delay(1000);               
+  Wire.onRequest(requestEvents);
+  Wire.onReceive(receiveEvents);
+
+  pinMode(buttonPin, INPUT);
+  pinMode(6, OUTPUT);
+
+//  lcd.init();                      // initialize the lcd 
+
+
+  delay(500);
+
+}
+int bcl = 0;
+void loop()
+{
+  if (isDark) {
+    Serial.println("Slave Dark, go to sleep");
+    delay(100);
+    LowPower.powerDown(SLEEP_8S, ADC_OFF, BOD_OFF);
+    //LowPower.idle(SLEEP_8S, ADC_OFF, TIMER2_OFF, TIMER1_OFF, TIMER0_OFF, SPI_OFF, USART0_OFF, TWI_OFF);
+        
+  }
+    button.loop(); // MUST call the loop() function first
+
+  int btnState = button.getState();
+  //Serial.println(btnState);
+  
+  double Irms_conso = emon_conso.calcIrms(1480);  // Calculate Irms_conso only
+  double Irms_solar = emon_solar.calcIrms(1480);  // Calculate Irms_conso only
+
+  lectures ++;
+  
+  delay(10);
+  if (lectures > 0) {
+    sum_conso += Irms_conso;
+    sum_solar += Irms_solar;
+
+    if (lectures == NB_MESURES) { 
+      last_conso_value = sum_conso / lectures;
+      last_solar_value = sum_solar / lectures;
+      lectures = -10;
+      sum_conso = 0;
+      sum_solar = 0;
+
+      //delay(2000);
+    }
+  }
+
+//  Serial.println("Slave Conso  :" + String(bcl) + " " + String(sum_conso / lectures));
+//  Serial.println("Slave Solaire:" + String(sum_solar / lectures)); 
+  
+  bcl ++;   
+//    // check if the pushbutton is pressed. If it is, the buttonState is HIGH:
+//    if (btnState == 0) {
+//      // digitalWrite(6, HIGH);
+//
+//      lcd.backlight();
+////      for(int i=1024; i>0; i-=25){
+////         analogWrite(6, i);
+////         delay(500);
+////         lcd.clear();
+////         lcd.setCursor(0,0);
+////         lcd.print("i " + String(i));
+////      }
+//    }
+//    else {
+//      lcd.noBacklight();
+//      // digitalWrite(6, LOW);
+//    }
+//    //lcd.backlight();
+//    if (lectures > 0) {
+//    lcd.clear();
+//    lcd.setCursor(0,0);
+//    lcd.print("Conso  :" + String(bcl) + " " + String(sum_conso / lectures));
+//    lcd.setCursor(0,1);
+//    lcd.print("Solaire:" + String(sum_solar / lectures)); 
+//    }
+  
+}
+
+
+void requestEvents()
+{
+  digitalWrite(LED_BUILTIN, HIGH);   // turn the LED on (HIGH is the voltage level)
+  delay(100);                       // wait for a second
+   
+  
+  Serial.println(F("---> received request"));
+  Serial.print(F("sending value : "));
+  char TempString[10];  //  Hold The Convert Data
+  dtostrf(last_conso_value,2,2,TempString);
+  Serial.println(TempString);
+
+  Wire.write(TempString);
+  Wire.write(";");
+
+  dtostrf(last_solar_value,2,2,TempString);
+  Serial.println(TempString);
+
+  Wire.write(TempString);
+  Wire.write("\n");
+
+  digitalWrite(LED_BUILTIN, LOW);    // turn the LED off by making the voltage LOW
+  delay(1000);
+}
+
+void receiveEvents(int numBytes)
+{  
+  Serial.println(F("---> received events"));
+//  int n = Wire.read();
+//  Serial.print(numBytes);
+//  Serial.println(F("bytes received"));
+//  Serial.print(F("received value : "));
+//  Serial.println(n);
+  String data = "";
+  while(Wire.available()) // loop through all but the last
+  {
+    char c = Wire.read(); // receive byte as a character
+    Serial.print(c);         // print the character
+    data = data + c;
+  }
+  if (data == "jour") {
+    isDark = false;
+  }
+  if (data == "nuit") {
+    isDark = true;
+  }
+}