X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=src%2Fcom%2Fatmel%2Ffpslic%2FFpslicRawUsb.java;h=61b687bdded73c79b4406cb4a1d92dd0c537ebf1;hb=9752e92536ce2e72fd2a214690743d21d644df5a;hp=a459e8df111c8a9e0f7a8b5bd0548820e2f4e7b6;hpb=75fe11ac15f5de917698dc6649b862e38b087564;p=slipway.git

diff --git a/src/com/atmel/fpslic/FpslicRawUsb.java b/src/com/atmel/fpslic/FpslicRawUsb.java
index a459e8d..61b687b 100644
--- a/src/com/atmel/fpslic/FpslicRawUsb.java
+++ b/src/com/atmel/fpslic/FpslicRawUsb.java
@@ -2,7 +2,12 @@ package com.atmel.fpslic;
 import com.ftdi.usb.*;
 import java.io.*;
 
-public class FpslicRawUsb extends FtdiUart implements FpslicRaw {
+/**
+ * Exposes the FpslicRaw interface of an FPSLIC wired to an FTDI USB-UART.
+ */
+public class FpslicRawUsb implements FpslicRaw {
+
+    private FtdiUart ftdiuart;
 
     private int dmask =
         (1<<0) |
@@ -14,21 +19,11 @@ public class FpslicRawUsb extends FtdiUart implements FpslicRaw {
         (1<<6) |
         (1<<7);
 
-    public FpslicRawUsb() throws IOException {
-        super(0x6666, 0x3133, 1500 * 1000);
+    public FpslicRawUsb(FtdiUart ftdiuart) throws IOException {
+        this.ftdiuart = ftdiuart;
         reset();
     }
 
-    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 reset() throws IOException {
 
         dmask =
@@ -40,19 +35,12 @@ public class FpslicRawUsb extends FtdiUart implements FpslicRaw {
             (1<<5) |
             (1<<6) |
             (1<<7);
-        avrrst(false);
-
-        flush();
-        //purge();
-
-        dbus_mode(dmask);
-        flush();
+        ftdiuart.dbus_mode(dmask);
 
+        avrrst(false);
         clk(false);
         data(false);
         con(false);
-        flush();
-        //try { Thread.sleep(500); } catch (Exception e) { }
 
         reset(false);
         flush();
@@ -67,64 +55,18 @@ public class FpslicRawUsb extends FtdiUart implements FpslicRaw {
         con(false);
     }
 
-    void config(boolean bit) throws IOException { config(bit?1:0, 1); }
-    void config(int dat) throws IOException { config(dat, 8); }
-    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.
-    void reset(boolean on) throws IOException {
-        uart_and_cbus_mode(1<<1, on ? (1<<1) : 0);
-        flush();
-        if (on) {
-            dbus_mode(dmask);
-            flush();
-        }
-    }
-
-    void avrrst(boolean on) throws IOException { dbang(7, on); }
-    void clk(boolean on)    throws IOException { dbang(6, on); }
-    void data(boolean on)   throws IOException { dbang(5, on); }
-
-    boolean initErr()       throws IOException { flush(); return (readPins() & (1<<4))!=0; }
-
-    boolean con() throws IOException {
-        flush();
-        //dmask &= ~(1<<0);
-        dbus_mode(dmask);
-        return (readPins() & (1<<0)) != 0;
-    }
-    boolean rcon() throws IOException {
-        flush();
-        dmask &= ~(1<<0);
-        dbus_mode(dmask);
-        return (readPins() & (1<<0)) != 0;
-    }
-    void con(boolean on) throws IOException {
-        flush();
-        dmask |= (1<<0);
-        dbang(0, on);
-        dbus_mode(dmask);
-    }
-
     public OutputStream getConfigStream() throws IOException {
         reset();
-        config(0,10);
-        con();
+        config(0,2);
+        flush();
         return new OutputStream() {
                 int bytes = 0;
+                int bits = 0;
                 public void write(int in) throws IOException {
-                    bytes++;
                     for(int i=7; i>=0; i--) {
+                        bits++;
                         config((((in & 0xff) & (1<<i))!=0)?1:0, 1);
+                        if (bits==1) con();
                     }
                 }
                 public void write(byte[] b, int off, int len) throws IOException {
@@ -148,56 +90,115 @@ public class FpslicRawUsb extends FtdiUart implements FpslicRaw {
                     }
                     avrrst(false);
                     try { Thread.sleep(100); } catch (Exception e) { }
-                    purge();
-                    uart_and_cbus_mode(1<<1, 1<<1);
+                    ftdiuart.purge();
+                    ftdiuart.uart_and_cbus_mode(1<<1, 1<<1);
                 }
             };
     }
 
-    static String red(Object o) { return "\033[31m"+o+"\033[0m"; }
-    static String green(Object o) { return "\033[32m"+o+"\033[0m"; }
+    public OutputStream getOutputStream() { return ftdiuart.getOutputStream(); }
+    public InputStream  getInputStream() { return ftdiuart.getInputStream(); }
+
+    private void preamble() throws IOException {
+        config(0,7);
+        flush();
+    }
     public void selfTest() throws Exception {
-        FpslicRawUsb d = this;
         boolean pin;
-        d.reset();
-        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();
+
+        getConfigStream();
+        config(0,1);
+        con();
+        config(0,7);
+        config(Integer.parseInt("10110111", 2), 8);
+        config(0,1);
+        flush();
         try { Thread.sleep(100); } catch (Exception e) { }
-        pin = d.initErr();
+        pin = initErr();
         System.out.println("good preamble   => " + pin + " " + (pin ? green("good") : red("BAD")));
 
-        d.reset();
-        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();
+        getConfigStream();
+        config(0,1);
+        con();
+        config(0,6);
+        flush();
+        config(Integer.parseInt("10110111", 2), 8);
+        config(0, 2);
+        flush();
         try { Thread.sleep(100); } catch (Exception e) { }
-        pin = d.initErr();
+        pin = initErr();
         System.out.println("bad preamble #2 => " + pin + " " + (pin ? red("BAD") : green("good")));
 
-        d.reset();
-        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();
+        getConfigStream();
+        config(0,1);
+        con();
+        config(0,7);
+        config(Integer.parseInt("11110111", 2), 8);
+        config(0, 1);
+        flush();
         try { Thread.sleep(100); } catch (Exception e) { }
-        pin = d.initErr();
+        pin = initErr();
         System.out.println("bad preamble #1 => " + pin + " " + (pin ? red("BAD") : green("good")));
     }
+
+    // Private //////////////////////////////////////////////////////////////////////////////
+
+    private void flush() throws IOException { ftdiuart.getOutputStream().flush(); }
+
+    private int dbits = 0;
+    private void dbang(int bit, boolean val) throws IOException {
+        dbits = val ? (dbits | (1 << bit)) : (dbits & (~(1 << bit)));
+        ftdiuart.getOutputStream().write((byte)dbits);
+    }
+
+    private void config(boolean bit) throws IOException { config(bit?1:0, 1); }
+    private void config(int dat) throws IOException { config(dat, 8); }
+    private 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);
+            dbits &= ~(1<<6);  // let the clock fall with the next data bit, whenever it goes out
+        }
+    }
+
+    // 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.
+    private void reset(boolean on) throws IOException {
+        ftdiuart.uart_and_cbus_mode(1<<1, on ? (1<<1) : 0);
+        flush();
+        if (on) {
+            ftdiuart.dbus_mode(dmask);
+            flush();
+        }
+    }
+
+    private void avrrst(boolean on) throws IOException { dbang(7, on); }
+    private void clk(boolean on)    throws IOException { dbang(6, on); }
+    private void data(boolean on)   throws IOException { dbang(5, on); }
+    private boolean initErr()       throws IOException { flush(); return (ftdiuart.readPins() & (1<<4))!=0; }
+
+    private boolean con() throws IOException {
+        flush();
+        //dmask &= ~(1<<0);
+        ftdiuart.dbus_mode(dmask);
+        return (ftdiuart.readPins() & (1<<0)) != 0;
+    }
+
+    private boolean rcon() throws IOException {
+        flush();
+        dmask &= ~(1<<0);
+        ftdiuart.dbus_mode(dmask);
+        return (ftdiuart.readPins() & (1<<0)) != 0;
+    }
+    private void con(boolean on) throws IOException {
+        flush();
+        dmask |= (1<<0);
+        dbang(0, on);
+        ftdiuart.dbus_mode(dmask);
+    }
+
+    private static String red(Object o) { return "\033[31m"+o+"\033[0m"; }
+    private static String green(Object o) { return "\033[32m"+o+"\033[0m"; }
 }