+++ /dev/null
-package com.atmel.fpslic;
-import com.ftdi.usb.*;
-import java.io.*;
-
-public class ChipImpl extends FtdiUart implements Chip {
-
- private int dmask =
- (1<<0) |
- (1<<1) |
- (1<<2) |
- //(1<<3) |
- //(1<<4) |
- (1<<5) |
- (1<<6) |
- (1<<7);
-
- public ChipImpl() throws IOException {
- super(0x6666, 0x3133, 1500 * 1000);
- 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) |
- (1<<1) |
- (1<<2) |
- //(1<<3) |
- //(1<<4) |
- (1<<5) |
- (1<<6) |
- (1<<7);
- avrrst(false);
-
- flush();
- //purge();
-
- dbus_mode(dmask);
- flush();
-
- clk(false);
- data(false);
- con(false);
- flush();
- //try { Thread.sleep(500); } catch (Exception e) { }
-
- reset(false);
- flush();
- try { Thread.sleep(500); } catch (Exception e) { }
- if (initErr()) throw new RuntimeException("INIT was still high after pulling RESET low");
-
- reset(true);
- flush();
- try { Thread.sleep(500); } catch (Exception e) { }
- if (!initErr()) throw new RuntimeException("INIT was still low after releasing RESET");
-
- con(false);
- }
-
- 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);
- clk(true);
- clk(false);
- }
- }
-
- // 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) throws IOException {
- uart_and_cbus_mode(1<<1, on ? (1<<1) : 0);
- flush();
- if (on) {
- dbus_mode(dmask);
- flush();
- }
- }
-
- 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() throws IOException { flush(); return (readPins() & (1<<4))!=0; }
-
- public boolean con() throws IOException {
- flush();
- //dmask &= ~(1<<0);
- dbus_mode(dmask);
- return (readPins() & (1<<0)) != 0;
- }
- public boolean rcon() throws IOException {
- flush();
- dmask &= ~(1<<0);
- dbus_mode(dmask);
- return (readPins() & (1<<0)) != 0;
- }
- public void con(boolean on) throws IOException {
- flush();
- dmask |= (1<<0);
- dbang(0, on);
- 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