1 package edu.berkeley.obits.device.atmel;
3 import edu.berkeley.slipway.*;
4 import edu.berkeley.obits.*;
5 import org.ibex.util.Log;
10 /** the "host" side of the AVR Drone; see AvrDrone.c for the other side */
11 public class AvrDrone extends AtmelDevice {
13 private final DataInputStream in;
14 private final DataOutputStream out;
15 private final Board board;
17 public AvrDrone(Board b) throws IOException {
19 this.out = new DataOutputStream(b.getOutputStream());
20 this.in = new DataInputStream(b.getInputStream());
24 public void reset() { board.reset(); }
26 private void init() throws IOException {
27 Log.debug(this, "waiting for device to identify itself");
29 if (in.readByte() != (byte)'O') throw new RuntimeException("didn't get the proper signature");
30 if (in.readByte() != (byte)'B') throw new RuntimeException("didn't get the proper signature");
31 if (in.readByte() != (byte)'I') throw new RuntimeException("didn't get the proper signature");
32 if (in.readByte() != (byte)'T') throw new RuntimeException("didn't get the proper signature");
33 if (in.readByte() != (byte)'S') throw new RuntimeException("didn't get the proper signature");
34 if (in.readByte() != (byte)'\n') throw new RuntimeException("didn't get the proper signature");
37 byte[] bytes = new byte[6];
38 for(int i=0; i<6; i++) {
39 bytes[i] = in.readByte();
40 System.out.println("got " + (i+1) + " header bytes: " + (bytes[i] & 0xff) + " '" + ((char)bytes[i]) + "'");
43 Log.info(this, "device correctly identified itself; ready for operation");
46 public synchronized void scanFPGA(boolean on) throws DeviceException {
54 } catch (IOException e) { throw new DeviceException(e); }
57 public static int retval = 0;
58 public synchronized int readCount() throws DeviceException {
64 ByteCallback bc = new ByteCallback() {
65 public synchronized void call(byte b) throws Exception {
68 ((in.read() & 0xff) << 16) |
69 ((in.read() & 0xff) << 8) |
70 ((in.read() & 0xff) << 0);
81 } catch (Exception e) { throw new DeviceException(e); }
84 public static interface ByteCallback {
85 public void call(byte b) throws Exception;
88 private Vector callbacks = new Vector();
90 private Thread reader = new Thread() {
92 System.out.println("*** reader thread begun");
95 byte b = in.readByte();
96 ByteCallback bc = (ByteCallback)callbacks.remove(0);
98 } catch (Exception e) {
105 public synchronized void readBus(ByteCallback bc) throws DeviceException {
110 if (reader != null) {
114 } catch (IOException e) { throw new DeviceException(e); }
117 public synchronized void readInterrupts(ByteCallback bc) throws DeviceException {
122 if (reader != null) {
126 } catch (IOException e) { throw new DeviceException(e); }
129 private byte[][][] cache = new byte[24][][];
130 public /*synchronized*/ byte mode4(int z, int y, int x) throws DeviceException {
131 if (cache[x]==null) return 0;
132 if (cache[x][y]==null) return 0;
133 return cache[x][y][z];
139 public static int save = 0;
140 public static int saveof = 0;
141 public /*synchronized*/ void mode4(int z, int y, int x, int d) throws DeviceException {
144 Log.info(this, "writing configuration frame [zyxd]: " +
145 pad(1, Integer.toString(z&0xff, 16)) + " " +
146 pad(1, Integer.toString(y&0xff, 16)) + " " +
147 pad(1, Integer.toString(x&0xff, 16)) + " " +
148 pad(1, Integer.toString(d&0xff, 16))
151 boolean zchange = z!=lastz;
152 boolean ychange = y!=lasty;
153 boolean xchange = x!=lastx;
154 boolean zinc = z==lastz+1;
155 boolean yinc = y==lasty+1;
156 boolean xinc = x==lastx+1;
157 boolean zdec = z==lastz-1;
158 boolean ydec = y==lasty-1;
159 boolean xdec = x==lastx-1;
171 if (cache[x & 0xff]==null) cache[x & 0xff] = new byte[24][];
172 if (cache[x & 0xff][y & 0xff]==null) cache[x & 0xff][y & 0xff] = new byte[256];
173 cache[x & 0xff][y & 0xff][z & 0xff] = (byte)(d & 0xff);
174 } catch (IOException e) { throw new DeviceException(e); }
177 public /*synchronized*/ void flush() throws DeviceException {
180 } catch (IOException e) { throw new DeviceException(e); }
183 private String pad(int i, String s) { if (s.length()>i) return s; return "0"+pad((i-1),s); }