(1<<6) |
(1<<7);
- public ChipImpl() {
- super(0x6666, 0x3133);
+ public ChipImpl() throws IOException {
+ super(0x6666, 0x3133, 1500 * 1000);
doReset();
}
- public void doReset() {
+ public void flush() throws IOException { getOutputStream().flush(); }
+
+ protected int dbits = 0;
+ protected synchronized void dbang(int bit, boolean val) throws IOException {
+ dbits = val ? (dbits | (1 << bit)) : (dbits & (~(1 << bit)));
+ try {
+ getOutputStream().write((byte)dbits);
+ } catch (IOException e) { throw new RuntimeException(e); }
+ }
+
+ public void doReset() throws IOException {
dmask =
(1<<0) |
flush();
//purge();
- dbangmode(dmask);
+ dbus_mode(dmask);
flush();
clk(false);
flush();
try { Thread.sleep(500); } catch (Exception e) { }
if (initErr()) throw new RuntimeException("INIT was still high after pulling RESET low");
- //System.out.println("0 con() = " + con());
reset(true);
flush();
try { Thread.sleep(500); } catch (Exception e) { }
if (!initErr()) throw new RuntimeException("INIT was still low after releasing RESET");
- //System.out.println("1 con() = " + con());
+
con(false);
}
- public void config(boolean bit) { config(bit?1:0, 1); }
- public void config(int dat) { config(dat, 8); }
- public void config(int dat, int numbits) {
+ public void config(boolean bit) throws IOException { config(bit?1:0, 1); }
+ public void config(int dat) throws IOException { config(dat, 8); }
+ public void config(int dat, int numbits) throws IOException {
for(int i=(numbits-1); i>=0; i--) {
boolean bit = (dat & (1<<i)) != 0;
data(bit);
// tricky: RESET has a weak pull-up, and is wired to a CBUS line. So,
// we can pull it down (assert reset) from uart-mode, or we can
// let it float upward from either mode.
- public void reset(boolean on) {
- bits = on ? (1<<1) : 0;
- mask = (1<<1);
- uart();
+ public void reset(boolean on) throws IOException {
+ uart_and_cbus_mode(1<<1, on ? (1<<1) : 0);
flush();
if (on) {
- //mask = 0;
- //uart();
- //flush();
- dbangmode(dmask);
+ dbus_mode(dmask);
flush();
}
}
- public void avrrst(boolean on) { dbang(7, on); }
- public void clk(boolean on) { dbang(6, on); }
- public void data(boolean on) { dbang(5, on); }
+ public void avrrst(boolean on) throws IOException { dbang(7, on); }
+ public void clk(boolean on) throws IOException { dbang(6, on); }
+ public void data(boolean on) throws IOException { dbang(5, on); }
- public boolean initErr() { flush(); return (readPins() & (1<<4))!=0; }
+ public boolean initErr() throws IOException { flush(); return (readPins() & (1<<4))!=0; }
- public boolean con() {
+ public boolean con() throws IOException {
flush();
//dmask &= ~(1<<0);
- dbangmode(dmask);
+ dbus_mode(dmask);
return (readPins() & (1<<0)) != 0;
}
- public boolean rcon() {
+ public boolean rcon() throws IOException {
flush();
dmask &= ~(1<<0);
- dbangmode(dmask);
+ dbus_mode(dmask);
return (readPins() & (1<<0)) != 0;
}
- public void con(boolean on) {
+ public void con(boolean on) throws IOException {
flush();
dmask |= (1<<0);
dbang(0, on);
- dbangmode(dmask);
+ dbus_mode(dmask);
+ }
+
+ public OutputStream getConfigStream() throws IOException {
+ doReset();
+ config(0,10);
+ con();
+ return new OutputStream() {
+ int bytes = 0;
+ public void write(int in) throws IOException {
+ bytes++;
+ for(int i=7; i>=0; i--) {
+ config((((in & 0xff) & (1<<i))!=0)?1:0, 1);
+ }
+ }
+ public void write(byte[] b, int off, int len) throws IOException {
+ for(int i=off; i<off+len; i++)
+ write(b[i]);
+ }
+ public void flush() throws IOException {
+ ChipImpl.this.flush();
+ rcon();
+ }
+ public void close() throws IOException {
+ flush();
+ if (!initErr())
+ throw new RuntimeException("initialization failed at " + bytes);
+ for(int i=0; i<100; i++) {
+ flush();
+ if (!initErr())
+ throw new RuntimeException("initialization failed at " + bytes);
+ try { Thread.sleep(20); } catch (Exception e) { }
+ config(0,1);
+ }
+ avrrst(false);
+ try { Thread.sleep(100); } catch (Exception e) { }
+ purge();
+ uart_and_cbus_mode(1<<1, 1<<1);
+ }
+ };
+ }
+
+ public static String red(Object o) { return "\033[31m"+o+"\033[0m"; }
+ public static String green(Object o) { return "\033[32m"+o+"\033[0m"; }
+ public void selfTest() throws Exception {
+ ChipImpl d = this;
+ boolean pin;
+ d.doReset();
+ d.config(0,3);
+ d.con();
+ d.config(0,7);
+ d.flush();
+ //d.flush();
+ d.config(Integer.parseInt("10110111", 2), 8);
+ d.config(0,1);
+ d.flush();
+ try { Thread.sleep(100); } catch (Exception e) { }
+ pin = d.initErr();
+ System.out.println("good preamble => " + pin + " " + (pin ? green("good") : red("BAD")));
+
+ d.doReset();
+ try { Thread.sleep(100); } catch (Exception e) { }
+ d.config(0,3);
+ d.con();
+ d.config(0,6);
+ d.flush();
+ //d.flush();
+ d.config(Integer.parseInt("10110111", 2), 8);
+ d.config(0, 2);
+ d.flush();
+ try { Thread.sleep(100); } catch (Exception e) { }
+ pin = d.initErr();
+ System.out.println("bad preamble #2 => " + pin + " " + (pin ? red("BAD") : green("good")));
+
+ d.doReset();
+ try { Thread.sleep(100); } catch (Exception e) { }
+ d.config(0,3);
+ d.con();
+ d.config(0,7);
+ d.flush();
+ //d.flush();
+ d.config(Integer.parseInt("11110111", 2), 8);
+ d.config(0, 1);
+ d.flush();
+ try { Thread.sleep(100); } catch (Exception e) { }
+ pin = d.initErr();
+ System.out.println("bad preamble #1 => " + pin + " " + (pin ? red("BAD") : green("good")));
}
}
projects / slipway.git / blobdiff