C#

BitArray byte1 = new BitArray(commandData.Data[0]);
                 enumLEDAndBuzzer lcdAndBuzzState = enumLEDAndBuzzer.NULL;

                 if ((byte1.Get(byte1.Count - 1)) == 0x31) // 1
                 {
                    lcdAndBuzzState = enumLEDAndBuzzer.BUZZER_STATE;
                 }
                 else
                 {
                    lcdAndBuzzState = enumLEDAndBuzzer.NULL;
                 }
                  if((byte1.Get(byte1.Count - 2)) == 0x31) // 1
                 {
                 }
                 else
                 {
                    lcdAndBuzzState = enumLEDAndBuzzer.NULL;
                 }

byte b = 0xaa;
if ((b && 0x01) > 0)
{
  //bit0 = 1
}
else
{
  //bit0 = 0
}
if (((b >> 1) && 0x01) > 0)
{
  //bit1 = 1
}
else
{
  //bit1 = 0
}

class Program
{
    static void Main(string[] args)
    {
        byte baseValue = 0x01;
        byte otherValue = 0x07;
        Console.WriteLine("Base Value = {0} : Other Value = {1}", baseValue, otherValue);
        Console.WriteLine("AND result = {0}", baseValue & otherValue);
        Console.WriteLine("OR result = {0}", baseValue | otherValue);
        Console.WriteLine("XOR result = {0}", baseValue ^ otherValue);
        Console.WriteLine("NOT result (Base only) = {0}", (byte)~baseValue);
        Console.WriteLine("NAND result = {0}", (byte)~(baseValue & otherValue));
        Console.WriteLine("NOR result = {0}", (byte)~(baseValue | otherValue));

        Console.WriteLine("Bit0 of Base Value = {0}", baseValue & (byte)Bits.Bit0);
        Console.WriteLine("Bit0 and Bit1 of Other Value = {0}", otherValue & (byte)(Bits.Bit0 | Bits.Bit1));
        Console.ReadKey();
    }
}


[Flags]
public enum Bits : byte
{
    None = 0,
    Bit0 = 1,
    Bit1 = 2,
    Bit2 = 4,
    Bit3 = 8,
    Bit4 = 16,
    Bit5 = 32,
    Bit6 = 64,
    Bit7 = 128
}

public static bool bitGetter(byte[] bytes, int index) {
    int byteNumber=index/8;
    int bitNumber=index%8;
    int bitMask=1<<bitNumber;
    int byt=bytes[byteNumber];
    int bit=byt&bitMask;
    if (bit==0) return false;
    return true;
}

public static bool bitGetter(byte[] bytes, int index) {
    return 0!=bytes[index/8]&(1<<(index%8));
}

PIEBALDconsult wrote:

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