X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=src%2Fcom%2Fatmel%2Ffpslic%2FFpslicRawUsb.java;h=d6fddeeac4348d8835a4b1c1a7412dae5c183869;hb=d44022802297d495dfb0de032251f62d0021a1f6;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..d6fddee 100644
--- a/src/com/atmel/fpslic/FpslicRawUsb.java
+++ b/src/com/atmel/fpslic/FpslicRawUsb.java
@@ -2,129 +2,49 @@ package com.atmel.fpslic;
 import com.ftdi.usb.*;
 import java.io.*;
 
-public class FpslicRawUsb extends FtdiUart implements FpslicRaw {
-
-    private int dmask =
-        (1<<0) |
-        (1<<1) |
-        (1<<2) |
-        //(1<<3) |
-        //(1<<4) |
-        (1<<5) |
-        (1<<6) |
-        (1<<7);
-
-    public FpslicRawUsb() throws IOException {
-        super(0x6666, 0x3133, 1500 * 1000);
-        reset();
-    }
+/**
+ * Exposes the FpslicRaw interface of an FPSLIC wired to an FTDI USB-UART.
+ */
+public class FpslicRawUsb implements FpslicRaw {
 
-    void flush() throws IOException { getOutputStream().flush(); }
+    private FpslicPins pins;
 
-    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 FpslicRawUsb(FtdiUart ftdiuart) throws IOException {
+        this.pins = new FpslicPinsUsb(ftdiuart);
+        reset();
     }
 
     public void reset() 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");
+        pins.avrrstPin(false);
+        pins.configDataPin(false);
+        pins.resetPin(false);
+        pins.cclkPin(false);
+        
+        pins.conPin(false);
+        pins.flush();
 
-        reset(true);
-        flush();
+        pins.resetPin(false);
         try { Thread.sleep(500); } catch (Exception e) { }
-        if (!initErr()) throw new RuntimeException("INIT was still low after releasing RESET");
+        if (pins.initPin()) throw new RuntimeException("INIT was still high after pulling RESET low");
 
-        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; }
+        pins.resetPin(true);
+        try { Thread.sleep(500); } catch (Exception e) { }
+        if (!pins.initPin()) throw new RuntimeException("INIT was still low after releasing RESET");
 
-    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);
+        sendConfigBits(0,2);
+        pins.flush();
     }
 
     public OutputStream getConfigStream() throws IOException {
         reset();
-        config(0,10);
-        con();
         return new OutputStream() {
                 int bytes = 0;
+                int bits = 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);
+                        bits++;
+                        sendConfigBits((((in & 0xff) & (1<<i))!=0)?1:0, 1);
                     }
                 }
                 public void write(byte[] b, int off, int len) throws IOException {
@@ -132,72 +52,92 @@ public class FpslicRawUsb extends FtdiUart implements FpslicRaw {
                         write(b[i]);
                 }
                 public void flush() throws IOException {
-                    FpslicRawUsb.this.flush();
-                    rcon();
+                    pins.flush();
                 }
                 public void close() throws IOException {
-                    flush();
-                    if (!initErr())
+
+                    pins.flush();
+
+                    // turn off the CON pin we've been pulling low...
+                    pins.releaseConPin();
+
+                    if (!pins.initPin())
                         throw new RuntimeException("initialization failed at " + bytes);
                     for(int i=0; i<100; i++) {
-                        flush();
-                        if (!initErr())
+                        pins.flush();
+                        if (!pins.initPin())
                             throw new RuntimeException("initialization failed at " + bytes);
                         try { Thread.sleep(20); } catch (Exception e) { }
-                        config(0,1);
+                        sendConfigBits(0,1);
                     }
-                    avrrst(false);
-                    try { Thread.sleep(100); } catch (Exception e) { }
-                    purge();
-                    uart_and_cbus_mode(1<<1, 1<<1);
+
+                    pins.close();
                 }
             };
     }
 
-    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() throws IOException { return pins.getUartOutputStream(); }
+    public InputStream  getInputStream() throws IOException { return pins.getUartInputStream(); }
+
     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();
-        try { Thread.sleep(100); } catch (Exception e) { }
-        pin = d.initErr();
-        System.out.println("good preamble   => " + pin + " " + (pin ? green("good") : red("BAD")));
-
-        d.reset();
+        System.out.print("smoke check: ");
+
+        // correct preamble
+        getConfigStream();
+        sendConfigBits(Integer.parseInt("00000000", 2), 8);
+        sendConfigBits(Integer.parseInt("10110111", 2), 8);
+        sendConfigBits(0,1);
+        pins.flush();
         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();
+        pin = pins.initPin();
+        System.out.print((pin ? green(" [pass]") : red(" [FAIL]")));
+
+        // preamble shifted one bit earlier than it should be
+        getConfigStream();
+        sendConfigBits(Integer.parseInt("0000000",  2), 7);
+        sendConfigBits(Integer.parseInt("10110111", 2), 8);
+        sendConfigBits(0, 2);
+        pins.flush();
         try { Thread.sleep(100); } catch (Exception e) { }
-        pin = d.initErr();
-        System.out.println("bad preamble #2 => " + pin + " " + (pin ? red("BAD") : green("good")));
-
-        d.reset();
+        pin = pins.initPin();
+        System.out.print((pin ? red(" [FAIL]") : green(" [pass]")));
+
+        // preamble shifted one bit later than it should be
+        getConfigStream();
+        sendConfigBits(Integer.parseInt("000000000", 2), 9);
+        sendConfigBits(Integer.parseInt("10110111",  2), 8);
+        //sendConfigBits(0, 1);
+        pins.flush();
         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();
+        pin = pins.initPin();
+        System.out.print((pin ? red(" [FAIL]") : green(" [pass]")));
+
+        // plain 'ol bogus preamble
+        getConfigStream();
+        sendConfigBits(Integer.parseInt("00000000", 2), 8);
+        sendConfigBits(Integer.parseInt("11110111", 2), 8);
+        sendConfigBits(0, 1);
+        pins.flush();
         try { Thread.sleep(100); } catch (Exception e) { }
-        pin = d.initErr();
-        System.out.println("bad preamble #1 => " + pin + " " + (pin ? red("BAD") : green("good")));
+        pin = pins.initPin();
+        System.out.print((pin ? red(" [FAIL]") : green(" [pass]")));
+
+        System.out.println();
+    }
+
+    // Private //////////////////////////////////////////////////////////////////////////////
+
+    private void sendConfigBits(int dat, int numbits) throws IOException {
+        for(int i=(numbits-1); i>=0; i--) {
+            boolean bit = (dat & (1<<i)) != 0;
+            pins.configDataPin(bit);
+            pins.cclkPin(true);
+            pins.cclkPin(false);
+            //dbits &= ~(1<<6);  // let the clock fall with the next data bit, whenever it goes out
+        }
     }
+
+    private static String red(Object o) { return "\033[31m"+o+"\033[0m"; }
+    private static String green(Object o) { return "\033[32m"+o+"\033[0m"; }
 }