fine-third/fine-sense4/src/main/java/Sense4/Elite4.java

package Sense4;

/**
 * @author Lanlan
 * @date 2018/11/25
 */
public class Elite4 {
	
	public static byte[] readElite4Serial() {
		EliteLockIO eliteLockIO = LockUtils.getEliteLockIOInstance();
		eliteLockIO.initS4(false);
		byte[] serial = eliteLockIO.readEliteSerial();
		eliteLockIO.closeS4();
		
		return serial;
	}
	
	/*
	 * Write byte[] to elite4
	 */
	public static boolean writeBytes2ToElite4(byte[] bytes) {
		EliteLockIO eliteLockIO = LockUtils.getEliteLockIOInstance();
		eliteLockIO.initS4(true);
		
		byte[] write_len_bytes = LockUtils.intToByteArray1(bytes.length + 4);
		if (!eliteLockIO.write_internal_file(0, 4, write_len_bytes)) {
			eliteLockIO.closeS4();
			return false;
		}
		if (!eliteLockIO.write_internal_file(4, bytes.length, bytes)) {
			eliteLockIO.closeS4();
			return false;
		}

		eliteLockIO.closeS4();
		return true;
	}
	
	/*
	 * Read byte[] from elite4
	 */
	public static byte[] readBytesFromElitee4() {
		EliteLockIO eliteLockIO = LockUtils.getEliteLockIOInstance();
		eliteLockIO.initS4(true);
		
		byte[] len_out = eliteLockIO.read_internal_file(0, 4);
    	int read_len = LockUtils.byteArray2Int(len_out) - 4;
    	
    	if (read_len < 0) {
    		eliteLockIO.closeS4();
    		return new byte[0];
    	}
    	
    	byte read_bytes[] = eliteLockIO.read_internal_file(4, read_len);
		eliteLockIO.closeS4();
		
		return read_bytes;
	}
	
	public static String toHexString(byte[] b) {
		return LockUtils.toHexString(b);
	}
}