Update README.md

README.md

@@ -5,5 +5,109 @@ A direct approach to the meter is used without the need to know the Modbus proto
 
 ![ApSDM120](doc/IMG_00_presentazione.jpg "ApSDM120")
 
-Sample code and usage guide, very simple read :
+## Getting Started
+
+very simple !
+
+```c++
+#include <ApSDM120.h>
+
+ApSDM120  MySDM120(NO_DERE_PIN, NO_OTHER_MODBUS_LIB);
+
+void setup() {
+
+    MySDM120.BeginSerial(Serial1);   // usa la serial1 e la imposta a 9600 N 8 2 usabile anche con SoftwareSerial
+    MySDM120.SetSlaveAdress(1);      // 1 è indirizzo di default di un SDM120 appena comprato.
+
+    Serial.begin(115200); // è questa invece è la seriale per lo standard output di arduino usata per visualizzare dati sul pc e per caricare software.
+
+}
+
+
+void loop() {
+
+    Serial.println("------------------------");
+    Serial.print("Power   = ");
+    if ( MySDM120.okReadPower() )
+    {
+      Serial.println(MySDM120.Power);
+    }
+    else  Serial.println("Error");
+    delay(100);   // distanziare sempre le richieste non inviare mai richieste a raffica al misuratore...
+
+    Serial.print("Voltage = ");
+    if ( MySDM120.okReadVoltage() )
+    {
+      Serial.println(MySDM120.Voltage);
+    }
+    else  Serial.println("Error");
+    delay(100);
+
+    Serial.print("Current = ");
+    if ( MySDM120.okReadCurrent() )
+    {
+      Serial.println(MySDM120.Current);
+    }
+    else  Serial.println("Error");
+    delay(100);
+
+    Serial.print("PowFact = ");
+    if ( MySDM120.okReadPowFact() )
+    {
+      Serial.println(MySDM120.PowFact);
+    }
+    else  Serial.println("Error");
+    delay(100);
+
+    Serial.print("AngolFas = ");
+    if ( MySDM120.okReadAngolFas() )
+    {
+      Serial.println(MySDM120.AngolFas);
+    }
+    else  Serial.println("Error");
+    delay(100);
+
+    Serial.print("Frequenz = ");
+    if ( MySDM120.okReadFrequenz() )
+    {
+      Serial.println(MySDM120.Frequenz);
+    }
+    else  Serial.println("Error");
+    delay(100);
+
+    Serial.print("Export = ");
+    if ( MySDM120.okReadExport() )
+    {
+      Serial.println(MySDM120.Export);
+    }
+    else  Serial.println("Error");
+    delay(100);
+
+    Serial.print("Import = ");
+    if ( MySDM120.okReadImport() )
+    {
+      Serial.println(MySDM120.Import);
+    }
+    else  Serial.println("Error");
+    delay(100);
+
+    // ok next loop
+    delay(1000);
+}
+```
+```
+Output is:
+------------------------
+Power   = 84.20
+Voltage = 242.70
+Current = 0.34
+PowFact = 1.00
+AngolFas = 0.00
+Frequenz = 50.00
+Export = 0.00
+Import = 0.01
+------------------------
+```
+## For further information see the doc folder
+