first commit

DISABELE_ADC/DISABELE_ADC.ino

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+void setup()
+{
+  Serial.begin(9600);
+  ///////////////////////ADC INIT///////////////////////////////////////////////////
+//    //DIDR0 = 0x00;           //Digital input disabled on all ADC ports
+//    PRR &= ~(1<<PRADC);       //ADC turned on
+//    ADMUX = 0x60;           //AVcc, right adjusted, ADC0 pin 
+//    sei();
+//    ADCSRA = 0xcF; 
+  //Serial.println(__FILE__);
+}
+
+void loop()
+{
+ 
+ 
+  Serial.print("ADCSRA = ");
+  Serial.print(ADCSRA);
+  Serial.print("  Save ADCSRA ");
+  byte adcsra_save = ADCSRA;
+  Serial.println(" Set ADCSRA = 0");
+  //ADCSRA = 0;
+  //ADCSRA = ADCSRA & B01111111;
+  //delay(100);
+  ADCSRA &= ~ bit(ADEN); bitSet(PRR, PRADC);
+  Serial.print("ADCSRA = ");
+  Serial.print(ADCSRA);
+  Serial.print(" Analog read port A0 = ");
+  Serial.print(analogRead(A0));
+  Serial.print(" ADCSRA = ");
+  Serial.println(ADCSRA);
+  PRR &= ~(1<<PRADC);
+  ADCSRA = adcsra_save;
+  //delay(100);
+  Serial.print("Restore ADCSRA");
+  Serial.print(" ADCSRA = ");
+  Serial.print(ADCSRA);
+  Serial.print(" Analog read port A0 = ");
+  Serial.println(analogRead(A0)); 
+  Serial.println("-----------------------------------------------------------------");
+  
+  delay(2000);
+}
+
+
+
+
+//// The following saves some extra power by disabling some 
+//// peripherals I am not using.
+//
+//// Disable the ADC by setting the ADEN bit (bit 7)  of the
+//// ADCSRA register to zero.
+//ADCSRA = ADCSRA & B01111111;
+//
+//// Disable the analog comparator by setting the ACD bit
+//// (bit 7) of the ACSR register to one.
+//ACSR = B10000000;
+//
+//// Disable digital input buffers on all analog input pins
+//// by setting bits 0-5 of the DIDR0 register to one.
+//// Of course, only do this if you are not using the analog 
+//// inputs for your project.
+//DIDR0 = DIDR0 | B00111111;