.hex file generation

[RichieMac]

Hi guys,

A little query is all. Could anyone tell me if it is at all possible to take a ordinary text file and convert it into a .hex file for PROM blowing using Java. If so a nudge in the right direction would be greatly appreciated.

Thanks all in advance.

 

[sedj]

Read the file into a byte[] array, and try the below, which was taken from here :

http://david.tribble.com/src/java/tribble/util/Hex.java

    public static String encode(/*const*/ byte[] data, int off, int len)
    {
        char[]	ch;
        int	i;

        // Convert bytes to hex digits
        ch = new char[data.length*2];
        i = 0;

        while (len-- > 0)
        {
            int		b;
            int		d;

            // Convert next byte into a hex digit pair
            b = data[off++] & 0xFF;

            d = b >> 4;
            d = (d < 0xA ? d+'0' : d-0xA+'A');
            ch[i++] = (char) d;

            d = b & 0xF;
            d = (d < 0xA ? d+'0' : d-0xA+'A');
            ch[i++] = (char) d;
        }

        return (new String(ch));
    }

--------------------------------------------------
Free Database Connection Pooling Software

http://www.primrose.org.uk

 

[RichieMac]

So once the data is converted to hex format do I then just write the .hex file in the normal way.

i.e. File outputFile = new File("out.hex");
FileWriter out = new FileWriter(outputFile);
out.write(SOME DATA);

or something along those lines.

 

[sedj]

Something like this :

File f = ...
FileInputStream fis ...
byte[] data = new byte[(int)f.length()];
fis.read(data);
fis.close();

String hex = encode(data);

FileOutputStream fos ...
fos.write(hex);
fos.close();

--------------------------------------------------
Free Database Connection Pooling Software

http://www.primrose.org.uk

 

[RichieMac]

Thanks for the help.