Revision 3:469de11d1e1d, committed 2010-09-17

Comitter:

shintamainjp

Date:

Fri Sep 17 22:05:34 2010 +0000

Parent:

2:d4625043c895

Commit message:

Changed in this revision

diff -r d4625043c895 -r 469de11d1e1d RemoteIR/ReceiverIR.cpp
--- a/RemoteIR/ReceiverIR.cpp	Sun Aug 15 10:41:12 2010 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,243 +0,0 @@
-/**
- * IR receiver (Version 0.0.2)
- *
- * Copyright (C) 2010 Shinichiro Nakamura (CuBeatSystems)
- * http://shinta.main.jp/
- */
-
-#include "ReceiverIR.h"
-
-#define InRange(x,y)   ((((y) * 0.7) < (x)) && ((x) < ((y) * 1.3)))
-#define IRQ_ENABLE()    sem.release(); __enable_irq()
-#define IRQ_DISABLE()   __disable_irq(); sem.take()
-
-ReceiverIR::ReceiverIR(PinName rx) : evt(rx) {
-    IRQ_DISABLE();
-    evt.fall(this, &ReceiverIR::isr_fall);
-    evt.rise(this, &ReceiverIR::isr_rise);
-    ticker.attach_us(this, &ReceiverIR::isr_wdt, 1 * 1000);
-    init_state();
-    IRQ_ENABLE();
-}
-
-ReceiverIR::~ReceiverIR() {}
-
-ReceiverIR::State ReceiverIR::getState() {
-    IRQ_DISABLE();
-    State s = data.state;
-    IRQ_ENABLE();
-    return s;
-}
-
-int ReceiverIR::getData(ReceiverIR::Format *format, uint8_t *buf, int bufsiz) {
-    IRQ_DISABLE();
-
-    const int bc = data.bitcount;
-    if (bufsiz < (bc / 8)) {
-        IRQ_ENABLE();
-        return -1;
-    }
-
-    *format = data.format;
-    for (int i = 0; i < (bc / 8); i++) {
-        buf[i] = data.buffer[i];
-    }
-
-    init_state();
-
-    IRQ_ENABLE();
-    return bc;
-}
-
-void ReceiverIR::init_state(void) {
-    work.c1 = -1;
-    work.c2 = -1;
-    work.c3 = -1;
-    work.d1 = -1;
-    work.d2 = -1;
-    data.state = Idle;
-    data.format = UNKNOWN;
-    data.bitcount = 0;
-    timer.stop();
-    timer.reset();
-    for (int i = 0; i < sizeof(data.buffer); i++) {
-        data.buffer[i] = 0;
-    }
-}
-
-void ReceiverIR::isr_wdt(void) {
-    IRQ_DISABLE();
-    static int cnt = 0;
-    if ((Receiving == data.state) || ((0 <= work.c1) || (0 <= work.c2) || (0 <= work.c3))) {
-        cnt++;
-        if (cnt > 500) {
-            printf("# WDT [c1=%d, c2=%d, c3=%d, d1=%d, d2=%d, state=%d, format=%d, bitcount=%d]\n",
-                   work.c1,
-                   work.c2,
-                   work.c3,
-                   work.d1,
-                   work.d2,
-                   data.state,
-                   data.format,
-                   data.bitcount);
-            init_state();
-            cnt = 0;
-        }
-    } else {
-        cnt = 0;
-    }
-    IRQ_ENABLE();
-}
-
-void ReceiverIR::isr_fall(void) {
-    IRQ_DISABLE();
-    switch (data.state) {
-        case Idle:
-            if (work.c1 < 0) {
-                timer.start();
-                work.c1 = timer.read_us();
-            } else {
-                work.c3 = timer.read_us();
-                int a = work.c2 - work.c1;
-                int b = work.c3 - work.c2;
-                if (InRange(a, TUS_NEC * 16) && InRange(b, TUS_NEC * 8)) {
-                    /*
-                     * NEC.
-                     */
-                    data.format = NEC;
-                    data.state = Receiving;
-                    data.bitcount = 0;
-                } else if (InRange(a, TUS_NEC * 16) && InRange(b, TUS_NEC * 4)) {
-                    /*
-                     * NEC Repeat.
-                     */
-                    data.format = NEC;
-                    data.state = Received;
-                    data.bitcount = 0;
-                } else if (InRange(a, TUS_AEHA * 8) && InRange(b, TUS_AEHA * 4)) {
-                    /*
-                     * AEHA.
-                     */
-                    data.format = AEHA;
-                    data.state = Receiving;
-                    data.bitcount = 0;
-                } else if (InRange(a, TUS_AEHA * 8) && InRange(b, TUS_AEHA * 8)) {
-                    /*
-                     * AEHA Repeat.
-                     */
-                    data.format = AEHA;
-                    data.state = Received;
-                    data.bitcount = 0;
-                } else {
-                    init_state();
-                }
-            }
-            break;
-        case Receiving:
-            if (NEC == data.format) {
-                work.d2 = timer.read_us();
-                int a = work.d2 - work.d1;
-                if (InRange(a, TUS_NEC * 3)) {
-                    data.buffer[data.bitcount / 8] |= (1 << (data.bitcount % 8));
-                } else if (InRange(a, TUS_NEC * 1)) {
-                    data.buffer[data.bitcount / 8] &= ~(1 << (data.bitcount % 8));
-                }
-                data.bitcount++;
-                if (32 <= data.bitcount) {
-                    data.state = Received;
-                    work.c1 = -1;
-                    work.c2 = -1;
-                    work.c3 = -1;
-                    work.d1 = -1;
-                    work.d2 = -1;
-                }
-            } else if (AEHA == data.format) {
-                work.d2 = timer.read_us();
-                int a = work.d2 - work.d1;
-                if (InRange(a, TUS_AEHA * 3)) {
-                    data.buffer[data.bitcount / 8] |= (1 << (data.bitcount % 8));
-                } else if (InRange(a, TUS_AEHA * 1)) {
-                    data.buffer[data.bitcount / 8] &= ~(1 << (data.bitcount % 8));
-                }
-                data.bitcount++;
-                /*
-                 * Typical length of AEHA is 48 bits.
-                 * Please check a specification of your remote controller if you find a problem.
-                 */
-                if (48 <= data.bitcount) {
-                    data.state = Received;
-                    work.c1 = -1;
-                    work.c2 = -1;
-                    work.c3 = -1;
-                    work.d1 = -1;
-                    work.d2 = -1;
-                }
-            } else if (SONY == data.format) {
-                work.d1 = timer.read_us();
-            }
-            break;
-        case Received:
-            break;
-        default:
-            break;
-    }
-    IRQ_ENABLE();
-}
-
-void ReceiverIR::isr_rise(void) {
-    IRQ_DISABLE();
-    switch (data.state) {
-        case Idle:
-            if (0 <= work.c1) {
-                work.c2 = timer.read_us();
-                int a = work.c2 - work.c1;
-                if (InRange(a, TUS_SONY * 4)) {
-                    data.format = SONY;
-                    data.state = Receiving;
-                    data.bitcount = 0;
-                } else {
-                    static const int MINIMUM_LEADER_WIDTH = 150;
-                    if (a < MINIMUM_LEADER_WIDTH) {
-                        init_state();
-                    }
-                }
-            } else {
-                init_state();
-            }
-            break;
-        case Receiving:
-            if (NEC == data.format) {
-                work.d1 = timer.read_us();
-            } else if (AEHA == data.format) {
-                work.d1 = timer.read_us();
-            } else if (SONY == data.format) {
-                work.d2 = timer.read_us();
-                int a = work.d2 - work.d1;
-                if (InRange(a, TUS_SONY * 2)) {
-                    data.buffer[data.bitcount / 8] |= (1 << (data.bitcount % 8));
-                } else if (InRange(a, TUS_SONY * 1)) {
-                    data.buffer[data.bitcount / 8] &= ~(1 << (data.bitcount % 8));
-                }
-                data.bitcount++;
-                /*
-                 * How do we get the correct length? (12bits, 15bits, 20bits...)
-                 * By a model only?
-                 * Please check a specification of your remote controller if you find a problem.
-                 */
-                if (12 <= data.bitcount) {
-                    data.state = Received;
-                    work.c1 = -1;
-                    work.c2 = -1;
-                    work.c3 = -1;
-                    work.d1 = -1;
-                    work.d2 = -1;
-                }
-            }
-            break;
-        case Received:
-            break;
-        default:
-            break;
-    }
-    IRQ_ENABLE();
-}

diff -r d4625043c895 -r 469de11d1e1d RemoteIR/ReceiverIR.h
--- a/RemoteIR/ReceiverIR.h	Sun Aug 15 10:41:12 2010 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,70 +0,0 @@
-/**
- * IR receiver (Version 0.0.2)
- *
- * Copyright (C) 2010 Shinichiro Nakamura (CuBeatSystems)
- * http://shinta.main.jp/
- */
-
-#ifndef _RECEIVER_IR_H_
-#define _RECEIVER_IR_H_
-
-#include <mbed.h>
-
-#include "Semaphore.h"
-
-class ReceiverIR {
-public:
-    ReceiverIR(PinName rx);
-    ~ReceiverIR();
-
-    typedef enum {
-        Idle,
-        Receiving,
-        Received
-    } State;
-
-    typedef enum {
-        UNKNOWN,
-        NEC,
-        AEHA,
-        SONY
-    } Format;
-
-    State getState();
-    int getData(Format *format, uint8_t *buf, int bufsiz);
-private:
-    typedef struct {
-        State state;
-        Format format;
-        int bitcount;
-        uint8_t buffer[64];
-    } data_t;
-    typedef struct {
-        int c1;
-        int c2;
-        int c3;
-        int d1;
-        int d2;
-    } work_t;
-
-    static const int TUS_NEC = 562;
-    static const int TUS_AEHA = 425;
-    static const int TUS_SONY = 600;
-
-    InterruptIn evt;
-    Timer timer;
-    Ticker ticker;
-    Semaphore sem;
-
-    data_t data;
-    work_t work;
-
-    void init_state(void);
-
-    void isr_wdt(void);
-    void isr_fall(void);
-    void isr_rise(void);
-
-};
-
-#endif

diff -r d4625043c895 -r 469de11d1e1d extlib/Semaphore.h
--- a/extlib/Semaphore.h	Sun Aug 15 10:41:12 2010 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,32 +0,0 @@
-#ifndef _SEMAPHORE_H_
-#define _SEMAPHORE_H_
-
-/*
- * http://mbed.org/forum/mbed/topic/181/#comment-799
- */
-
-class Semaphore {
-public:
-    Semaphore(): s(SemFree) {};
-
-    bool take(bool block = true) {
-        int oldval;
-        do {
-            oldval = __ldrex(&s);
-        } while ((block && (oldval == SemTaken)) || (__strex(SemTaken, &s) != 0));
-        if (!block) {
-            __clrex();
-        }
-        return (oldval == SemFree);
-    }
-
-    void release() {
-        s = SemFree;
-    }
-
-private:
-    enum { SemFree, SemTaken };
-    int s;
-};
-
-#endif
\ No newline at end of file

diff -r d4625043c895 -r 469de11d1e1d extlib/TextLCD.cpp
--- a/extlib/TextLCD.cpp	Sun Aug 15 10:41:12 2010 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,167 +0,0 @@
-/* mbed TextLCD Library, for a 4-bit LCD based on HD44780
- * Copyright (c) 2007-2010, sford
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- */
-
-/*
- * Modified for star board orange by Shinichiro Nakamura. (CuBeatSystems)
- *
- * ID : shintamainjp
- * Added : RW-
- */
-
-#include "TextLCD.h"
-#include "mbed.h"
-
-TextLCD::TextLCD(PinName rs, PinName rw, PinName e, PinName d0, PinName d1,
-                 PinName d2, PinName d3, LCDType type) : _rs(rs), _rw(rw),
-        _e(e), _d(d0, d1, d2, d3),
-        _type(type) {
-
-    _e  = 1;
-    _rs = 0;            // command mode
-    _rw = 0;
-
-    wait(0.015);        // Wait 15ms to ensure powered up
-
-    // send "Display Settings" 3 times (Only top nibble of 0x30 as we've got 4-bit bus)
-    for (int i=0; i<3; i++) {
-        writeByte(0x3);
-        wait(0.00164);  // this command takes 1.64ms, so wait for it
-    }
-    writeByte(0x2);     // 4-bit mode
-    wait(0.000040f);    // most instructions take 40us
-
-    writeCommand(0x28); // Function set 001 BW N F - -
-    writeCommand(0x0C);
-    writeCommand(0x6);  // Cursor Direction and Display Shift : 0000 01 CD S (CD 0-left, 1-right S(hift) 0-no, 1-yes
-    cls();
-}
-
-void TextLCD::character(int column, int row, int c) {
-    int a = address(column, row);
-    writeCommand(a);
-    writeData(c);
-}
-
-void TextLCD::cls() {
-    writeCommand(0x01); // cls, and set cursor to 0
-    wait(0.00164f);     // This command takes 1.64 ms
-    locate(0, 0);
-}
-
-void TextLCD::locate(int column, int row) {
-    _column = column;
-    _row = row;
-}
-
-int TextLCD::_putc(int value) {
-    if (value == '\n') {
-        _column = 0;
-        _row++;
-        if (_row >= rows()) {
-            _row = 0;
-        }
-    } else {
-        character(_column, _row, value);
-        _column++;
-        if (_column >= columns()) {
-            _column = 0;
-            _row++;
-            if (_row >= rows()) {
-                _row = 0;
-            }
-        }
-    }
-    return value;
-}
-
-int TextLCD::_getc() {
-    return -1;
-}
-
-void TextLCD::writeByte(int value) {
-    _d = value >> 4;
-    wait(0.000040f); // most instructions take 40us
-    _e = 0;
-    wait(0.000040f);
-    _e = 1;
-    _d = value >> 0;
-    wait(0.000040f);
-    _e = 0;
-    wait(0.000040f);  // most instructions take 40us
-    _e = 1;
-}
-
-void TextLCD::writeCommand(int command) {
-    _rs = 0;
-    writeByte(command);
-}
-
-void TextLCD::writeData(int data) {
-    _rs = 1;
-    writeByte(data);
-}
-
-int TextLCD::address(int column, int row) {
-    switch (_type) {
-        case LCD20x4:
-            switch (row) {
-                case 0:
-                    return 0x80 + column;
-                case 1:
-                    return 0xc0 + column;
-                case 2:
-                    return 0x94 + column;
-                case 3:
-                    return 0xd4 + column;
-            }
-        case LCD16x2B:
-            return 0x80 + (row * 40) + column;
-        case LCD16x2:
-        case LCD20x2:
-        default:
-            return 0x80 + (row * 0x40) + column;
-    }
-}
-
-int TextLCD::columns() {
-    switch (_type) {
-        case LCD20x4:
-        case LCD20x2:
-            return 20;
-        case LCD16x2:
-        case LCD16x2B:
-        default:
-            return 16;
-    }
-}
-
-int TextLCD::rows() {
-    switch (_type) {
-        case LCD20x4:
-            return 4;
-        case LCD16x2:
-        case LCD16x2B:
-        case LCD20x2:
-        default:
-            return 2;
-    }
-}

diff -r d4625043c895 -r 469de11d1e1d extlib/TextLCD.h
--- a/extlib/TextLCD.h	Sun Aug 15 10:41:12 2010 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,119 +0,0 @@
-/* mbed TextLCD Library, for a 4-bit LCD based on HD44780
- * Copyright (c) 2007-2010, sford
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- */
- 
-/*
- * Modified for star board orange by Shinichiro Nakamura. (CuBeatSystems)
- *
- * ID : shintamainjp
- * Added : RW-
- */
-
-#ifndef MBED_TEXTLCD_H
-#define MBED_TEXTLCD_H
-
-#include "mbed.h"
-
-/** A TextLCD interface for driving 4-bit HD44780-based LCDs
- *
- * Currently supports 16x2, 20x2 and 20x4 panels
- *
- * @code
- * #include "mbed.h"
- * #include "TextLCD.h"
- *
- * TextLCD lcd(p10, p12, p15, p16, p29, p30); // rs, e, d0-d3
- *
- * int main() {
- *     lcd.printf("Hello World!\n");
- * }
- * @endcode
- */
-class TextLCD : public Stream {
-public:
-
-    /** LCD panel format */
-    enum LCDType {
-        LCD16x2     /**< 16x2 LCD panel (default) */
-        , LCD16x2B  /**< 16x2 LCD panel alternate addressing */
-        , LCD20x2   /**< 20x2 LCD panel */
-        , LCD20x4   /**< 20x4 LCD panel */
-    };
-
-    /** Create a TextLCD interface
-     *
-     * @param rs    Instruction/data control line.
-     * @param rw    Read/Write- control line.
-     * @param e     Enable line (clock)
-     * @param d0-d3 Data lines
-     * @param type  Sets the panel size/addressing mode (default = LCD16x2)
-     */
-    TextLCD(PinName rs, PinName rw, PinName e, PinName d0, PinName d1, PinName d2, PinName d3, LCDType type = LCD16x2);
-
-#if DOXYGEN_ONLY
-    /** Write a character to the LCD
-     *
-     * @param c The character to write to the display
-     */
-    int putc(int c);
-
-    /** Write a formated string to the LCD
-     *
-     * @param format A printf-style format string, followed by the
-     *               variables to use in formating the string.
-     */
-    int printf(const char* format, ...);
-#endif
-
-    /** Locate to a screen column and row
-     *
-     * @param column  The horizontal position from the left, indexed from 0
-     * @param row     The vertical position from the top, indexed from 0
-     */
-    void locate(int column, int row);
-
-    /** Clear the screen and locate to 0,0 */
-    void cls();
-
-    int rows();
-    int columns();
-
-protected:
-
-    // Stream implementation functions
-    virtual int _putc(int value);
-    virtual int _getc();
-
-    int address(int column, int row);
-    void character(int column, int row, int c);
-    void writeByte(int value);
-    void writeCommand(int command);
-    void writeData(int data);
-
-    DigitalOut _rs, _rw, _e;
-    BusOut _d;
-    LCDType _type;
-
-    int _column;
-    int _row;
-};
-
-#endif

diff -r d4625043c895 -r 469de11d1e1d extlib/TextLCD.lib
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/extlib/TextLCD.lib	Fri Sep 17 22:05:34 2010 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/simon/code/TextLCD/#44f34c09bd37

diff -r d4625043c895 -r 469de11d1e1d main.cpp
--- a/main.cpp	Sun Aug 15 10:41:12 2010 +0000
+++ b/main.cpp	Fri Sep 17 22:05:34 2010 +0000
@@ -1,5 +1,5 @@
 /**
- * StarBoard Orange - Example application No.2 (Version 0.0.1)
+ * StarBoard Orange - Example application No.2 (Version 0.0.4)
  * Remote IR receiver with StarBoard Orange
  *
  * See also ... http://mbed.org/users/shintamainjp/notebook/starboard_example2_ja/
@@ -12,11 +12,14 @@
 #include <mbed.h>
 
 #include "ReceiverIR.h"
+#include "TransmitterIR.h"
 #include "TextLCD.h"
 
-ReceiverIR ir(p17);
+ReceiverIR ir_rx(p15);
+TransmitterIR ir_tx(p21);
+TextLCD lcd(p24, p26, p27, p28, p29, p30);
 BusOut led(LED4, LED3, LED2, LED1);
-TextLCD lcd(p24, p25, p26, p27, p28, p29, p30);
+Ticker ledTicker;
 
 /**
  * Display a splash screen.
@@ -38,10 +41,104 @@
 }
 
 /**
+ * Receive.
+ *
+ * @param format Pointer to a format.
+ * @param buf Pointer to a buffer.
+ * @param bufsiz Size of the buffer.
+ *
+ * @return Bit length of the received data.
+ */
+int receive(RemoteIR::Format *format, uint8_t *buf, int bufsiz, int timeout = 1000) {
+    int cnt = 0;
+    while (ir_rx.getState() != ReceiverIR::Received) {
+        wait_ms(1);
+        cnt++;
+        if (timeout < cnt) {
+            return -1;
+        }
+    }
+    return ir_rx.getData(format, buf, bufsiz * 8);
+}
+
+/**
+ * Transmit.
+ *
+ * @param format Format.
+ * @param buf Pointer to a buffer.
+ * @param bitlength Bit length of the data.
+ *
+ * @return Bit length of the received data.
+ */
+int transmit(RemoteIR::Format format, uint8_t *buf, int bitlength, int timeout = 1000) {
+    int cnt = 0;
+    while (ir_tx.getState() != TransmitterIR::Idle) {
+        wait_ms(1);
+        cnt++;
+        if (timeout < cnt) {
+            return -1;
+        }
+    }
+    return ir_tx.setData(format, buf, bitlength);
+}
+
+/**
+ * Display a current status.
+ */
+void display_status(char *status) {
+    lcd.locate(0, 0);
+    lcd.printf("%-12.12s", status);
+}
+
+/**
+ * Display a format of a data.
+ */
+void display_format(RemoteIR::Format format) {
+    lcd.locate(12, 0);
+    switch (format) {
+        case RemoteIR::UNKNOWN:
+            lcd.printf("????");
+            break;
+        case RemoteIR::NEC:
+            lcd.printf(" NEC");
+            break;
+        case RemoteIR::AEHA:
+            lcd.printf("AEHA");
+            break;
+        case RemoteIR::SONY:
+            lcd.printf("SONY");
+            break;
+    }
+}
+
+/**
+ * Display a data.
+ *
+ * @param buf Pointer to a buffer.
+ * @param bitlength Bit length of a data.
+ */
+void display_data(uint8_t *buf, int bitlength) {
+    lcd.locate(0, 1);
+    const int n = bitlength / 8 + (((bitlength % 8) != 0) ? 1 : 0);
+    for (int i = 0; i < n; i++) {
+        lcd.printf("%02X", buf[i]);
+    }
+    for (int i = 0; i < 8 - n; i++) {
+        lcd.printf("--");
+    }
+}
+
+void ledfunc(void) {
+    led = led + 1;
+}
+
+/**
  * Entry point.
  */
 int main(void) {
 
+    ledTicker.attach(&ledfunc, 0.5);
+
     /*
      * Splash.
      */
@@ -56,64 +153,69 @@
     lcd.printf("Press a button  ");
     lcd.locate(0, 1);
     lcd.printf("on a controller.");
+    wait_ms(2000);
 
+    lcd.cls();
+
+    /*
+     * Execute.
+     */
     while (1) {
-        static int latest_bits = 0;
-        static ReceiverIR::State prev = ReceiverIR::Idle;
-        
-        /*
-         * Get a current state.
-         */
-        ReceiverIR::State curr = ir.getState();
-        if (prev != curr) {
-            lcd.locate(0, 0);
-            switch (curr) {
-                case ReceiverIR::Idle:
-                    lcd.printf("Idle (%2d) \n", latest_bits);
-                    break;
-                case ReceiverIR::Receiving:
-                    lcd.printf("Receiving \n");
-                    break;
-                case ReceiverIR::Received:
-                    lcd.printf("Received  \n");
-                    break;
+        uint8_t buf1[32];
+        uint8_t buf2[32];
+        int bitlength1;
+        int bitlength2;
+        RemoteIR::Format format;
+
+        memset(buf1, 0x00, sizeof(buf1));
+        memset(buf2, 0x00, sizeof(buf2));
+
+        {
+            display_status("1:RX>  >  ");
+            bitlength1 = receive(&format, buf1, sizeof(buf1));
+            if (bitlength1 < 0) {
+                continue;
+            }
+            display_data(buf1, bitlength1);
+            display_format(format);
+        }
+
+#if 0
+        wait_ms(1000);
+
+        {
+            display_status("2:RX>TX>  ");
+            bitlength1 = transmit(format, buf1, bitlength1);
+            if (bitlength1 < 0) {
+                continue;
+            }
+            display_data(buf1, bitlength1);
+            display_format(format);
+        }
+
+        wait_ms(100);
+
+        {
+            display_status("3:RX>TX>RX");
+            bitlength2 = receive(&format, buf2, sizeof(buf2));
+            if (bitlength2 < 0) {
+                continue;
+            }
+            display_data(buf2, bitlength2);
+            display_format(format);
+        }
+
+        wait_ms(100);
+
+        {
+            for (int i = 0; i < sizeof(buf1); i++) {
+                if (buf1[i] != buf2[i]) {
+                    display_status("Compare err.");
+                    wait(1);
+                    continue;
+                }
             }
         }
-        prev = curr;
-
-        /*
-         * Update statuses if it updated.
-         */
-        if (ReceiverIR::Received == curr) {
-            led = led + 1;
-            ReceiverIR::Format format;
-            uint8_t buf[32];
-            int bc = ir.getData(&format, buf, sizeof(buf));
-            latest_bits = bc;
-            lcd.locate(10, 0);
-            switch (format) {
-                case ReceiverIR::UNKNOWN:
-                    lcd.printf(": ????");
-                    break;
-                case ReceiverIR::NEC:
-                    lcd.printf(": NEC ");
-                    break;
-                case ReceiverIR::AEHA:
-                    lcd.printf(": AEHA");
-                    break;
-                case ReceiverIR::SONY:
-                    lcd.printf(": SONY");
-                    break;
-                default:
-                    break;
-            }
-            lcd.locate(0, 1);
-            for (int i = 0; i < (bc / 8); i++) {
-                lcd.printf("%02X", buf[i]);
-            }
-            for (int i = 0; i < 8 - (bc / 8); i++) {
-                lcd.printf("--");
-            }
-        }
+#endif
     }
 }
\ No newline at end of file

diff -r d4625043c895 -r 469de11d1e1d mbed.bld
--- a/mbed.bld	Sun Aug 15 10:41:12 2010 +0000
+++ b/mbed.bld	Fri Sep 17 22:05:34 2010 +0000
@@ -1,1 +1,1 @@
-http://mbed.org/users/mbed_official/code/mbed/builds/9114680c05da
+http://mbed.org/users/mbed_official/code/mbed/builds/e2ac27c8e93e

diff -r d4625043c895 -r 469de11d1e1d mylib/RemoteIR.lib
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mylib/RemoteIR.lib	Fri Sep 17 22:05:34 2010 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/shintamainjp/code/RemoteIR/#268cc2ab63bd