Adc.java

//
// tool/avr/Adc.java
//

package nanovm.avr;

public class Adc {

    // prescaler constants
    public static final int DIV2 = 0;
    public static final int DIV2A = 1;  // no real use for this
    public static final int DIV4 = 2;
    public static final int DIV8 = 3;
    public static final int DIV16 = 4;
    public static final int DIV32 = 5;
    public static final int DIV64 = 6;
    public static final int DIV128 = 7;

    // set ADC prescaler
    static public native void setPrescaler(int value);

    // voltage reference constants
    public static final int AREF = 0 << 6;
    public static final int AVCC = 1 << 6;
    //  public static final int RESERVED = 2 << 6;  // don't use
    public static final int INTERNAL = 3 << 6;

    // set voltage reference
    static public native void setReference(int value);

    // channel constants
    public static final int CHANNEL0 = 0;
    public static final int CHANNEL1 = 1;
    public static final int CHANNEL2 = 2;
    public static final int CHANNEL3 = 3;
    public static final int CHANNEL4 = 4;
    public static final int CHANNEL5 = 5;
    public static final int CHANNEL6 = 6;
    public static final int CHANNEL7 = 7;
    public static final int CHANNELVBG = 14;  // VBG (1.23V)
    public static final int CHANNELGND = 15;  // GND (0V)

    // get current ADC value
    static public native int getValue(int channel);  // get 10 bit value

    static public native int getByte(int channel);   // get 8 bit value
}