// BootLoad.java: bootstrap program for loading code into HC11
//
// Fred Martin / computer science / UML
// Thu Oct 10 01:22:26 2002
// updated Sat Oct  4 13:46:39 2003 

import java.io.*;

class BootLoad {
    private static Serial s;

    private static File f;

    public static void main(String[] argv) {
	setup(argv);	// select serial port and init Serial object
	System.out.println("Using serial port " + s.getPortName());

	byte[] buf = ReadRel.read(f);

	System.out.println("Serial port is open.  Turn on HC11 and press <ENTER> to continue...");
	try {
	    System.in.read();
	} catch (Exception e) {
	    e.printStackTrace();
	}

	System.out.println("Writing to serial line...");
	try {
	    s.put(0xff);	// send baud rate detect byte
	    s.put(buf);		// dump 512 bytes to serial port
	} catch (Exception e) {
	    e.printStackTrace();
	}
	s.flush(); // make sure all chars get out before exiting
	s.close();
	System.out.println("done.");
    }

    private static void setup(String[] args) {
	if (args.length < 2) {
	    System.out.println("Usage: BootLoad filename[.rel] serial-port");
	    System.out.println("Loads a .rel object file into 68HC11E1's 512 bytes of RAM\n");
	    s = new Serial();
	    String[] ports=s.portsAvailable();
	    int nPorts= ports.length;
	    System.out.println("Available ports are:");
	    for (int i=0; i< nPorts; i++) {
		System.out.println("  " + ports[i] + " ");
	    }
	    System.out.println();
	    System.exit(0);
	}

	String fn = args[0];
	if (!fn.endsWith(".rel")) fn = fn + ".rel";
	f = new File(fn);
	if (!f.exists()) {
	    System.out.println("File " + f + " does not exist.  Sorry.");
	    System.exit(1);
	}

	if (!f.canRead()) {
	    System.out.println("File " + f + " exists, but I can't read it.  Sorry.");	    
	    System.exit(1);
	}

	s = new Serial(args[1]);
    }
}