Revision 0:d494e07c7c0e, committed 2014-06-26

Comitter:

Sneid

Date:

Thu Jun 26 08:20:29 2014 +0000

Commit message:

mbed_LCD

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/TextLCD.cpp	Thu Jun 26 08:20:29 2014 +0000
@@ -0,0 +1,164 @@
+/* mbed TextLCD Library, for a 4-bit LCD based on HD44780
+ * Copyright (c) 2007-2010, sford, http://mbed.org
+ *
+ * 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.
+ */
+
+#include "TextLCD.h"
+#include "mbed.h"
+
+TextLCD::TextLCD(PinName rs, PinName rw, PinName e, PinName d4, PinName d5,
+                 PinName d6, PinName d7, LCDType type) : _rs(rs), _rw(rw),
+        _e(e), _d(d4, d5, d6, d7),
+        _type(type) {
+
+    _rw = 0;
+    _e  = 1;
+    _rs = 0;            // command mode
+
+    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++) {
+        writeNibble(0x3);        
+        wait(0.00164);  // this command takes 1.64ms, so wait for it
+    }
+    
+    writeNibble(0x2);     // 4-bit mode    
+
+    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) {
+    writeNibble(value >> 4);
+    writeNibble(value >> 0);
+}
+
+void TextLCD::writeCommand(int command) {
+    _rs = 0;
+    writeByte(command);
+}
+
+void TextLCD::clock(void) {
+    wait(0.000040f);
+    _e = 0;
+    wait(0.000040f);
+    _e = 1;
+}
+
+void TextLCD::writeNibble(int data) {
+    _d = data;
+    clock();
+}
+
+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;
+    }
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/TextLCD.h	Thu Jun 26 08:20:29 2014 +0000
@@ -0,0 +1,113 @@
+/* mbed TextLCD Library, for a 4-bit LCD based on HD44780
+ * Copyright (c) 2007-2010, sford, http://mbed.org
+ *
+ * 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.
+ */
+
+#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, d4-d7
+ * 
+ * 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 e     Enable line (clock)
+     * @param d4-d7 Data lines for using as a 4-bit interface
+     * @param type  Sets the panel size/addressing mode (default = LCD16x2)
+     */
+    TextLCD(PinName rs, PinName rw, PinName e, PinName d4, PinName d5, PinName d6, PinName d7, 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);
+    void writeNibble(int data);
+    void clock(void);
+    
+    DigitalOut _rs, _rw, _e;
+    BusOut _d;
+    LCDType _type;
+
+    int _column;
+    int _row;
+};
+
+#endif

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/cdef.h	Thu Jun 26 08:20:29 2014 +0000
@@ -0,0 +1,74 @@
+/********************************************************************
+ *
+ *  Name:           cdef.h
+ *  Beschreibung:   grundlegende Typdefinitionen
+ *  Autor:
+ *  Erstellung:     23.10.2012
+ *
+ *  Revisionsliste
+ *  Datum       | Autor         | Änderung
+ *  ------------+---------------+--------------------------
+ *  23.10.2012  | Altenburg     | Ersterstellung
+ *  ------------+---------------+--------------------------
+ *
+ ********************************************************************/
+#ifndef CDEF_H
+#define CDEF_H
+
+/**************************************************************************/
+/* Definitions                                                            */
+/**************************************************************************/
+typedef unsigned char byte;        /* vorzeichenlose 8-Bit-Zahl */
+typedef unsigned short word;       /* vorzeichenlose 16-Bit-Zahl */
+typedef signed char int8;          /* vorzeichenbehaftete 8-Bit-Zahl */
+typedef signed short int16;        /* vorzeichenbehaftete 16-Bit-Zahl */
+//typedef byte bool;                 /* True/False Aussage */
+typedef unsigned long dword;       /* Long-Zahl */
+typedef signed long int32;
+
+
+#define True                1
+#define False               0
+#define true                1
+#define false               0
+#define On                  1
+#define Off                 0
+#define Yes                 1
+#define No                  0
+
+#define Bit0    0x01                /* Bit-Definitionen */
+#define Bit1    0x02
+#define Bit2    0x04
+#define Bit3    0x08
+#define Bit4    0x10
+#define Bit5    0x20
+#define Bit6    0x40
+#define Bit7    0x80
+#define Bit8    (1 << 8)            /* Bit-Definitionen */
+#define Bit9    (1 << 9)
+#define Bit10   (1 << 10)
+#define Bit11   (1 << 11)
+#define Bit12   (1 << 12)
+#define Bit13   (1 << 13)
+#define Bit14   (1 << 14)
+#define Bit15   (1 << 15)
+#define Bit16   (1 << 16)           /* Bit-Definitionen */
+#define Bit17   (1 << 17)
+#define Bit18   (1 << 18)
+#define Bit19   (1 << 19)
+#define Bit20   (1 << 20)
+#define Bit21   (1 << 21)
+#define Bit22   (1 << 22)
+#define Bit23   (1 << 23)
+#define Bit24   (1 << 24)           /* Bit-Definitionen */
+#define Bit25   (1 << 25)
+#define Bit26   (1 << 26)
+#define Bit27   (1 << 27)
+#define Bit28   (1 << 28)
+#define Bit29   (1 << 29)
+#define Bit30   (1 << 30)
+#define Bit31   (1 << 31)
+
+
+#endif
+/********************************************************************/

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Thu Jun 26 08:20:29 2014 +0000
@@ -0,0 +1,161 @@
+/**************************************************************************
+ *  Name:        Stoppuhr
+ *  Date  :      11.12.2012
+ *  Author:
+ *  Revision List:
+  --------------------------------------------------------------------------
+  Date     | Author          | Change
+  --------------------------------------------------------------------------
+           |                 |
+  --------------------------------------------------------------------------
+ **************************************************************************/
+#include "mbed.h"
+#include "cdef.h"
+#include "TextLCD.h"
+#include "Timer.h"
+//#define test
+
+
+DigitalIn   bLinks(p8);
+InterruptIn bBtnLinks(p8);
+
+Timer       timer;
+Timer       timerSoLangeGedrueckt;
+Ticker      stTick;
+TextLCD     stLcd(p26, p25, p24, p23, p22, p20, p19, TextLCD::LCD20x4);
+
+/* Konstantenvereinbarungen */
+#define nTastShort   2           /* Entprellzyklen */
+#define nTastLong   800           /* 0,5 Sekunden gedrückt halten */
+
+enum {  enOff,                   /* Uhr ist aus */
+        enRun,                   /* Zeitläuft */
+        enStop                   /* Zeit steht */
+     };
+
+int binBtnCheck=0;
+
+volatile byte bStandby; /*
+* Description : Warteflag
+*/
+
+byte bTastTimerLi;/*
+* Description : Entprellzähler Links
+*/
+
+byte bTastState;/*
+* Description : Zustandsautomat "Taste"
+*/
+
+byte bLcdState; /*
+* Description :
+*/
+
+float fStoppUhr; /*
+* Description :
+*/
+
+void vTimerTick( void )
+{
+    bStandby = 1;
+}
+
+
+
+/* Funktion "Taste Links gedrückt" */
+void vButtonLeShort( void )
+{
+}
+
+/* Funktion "Taste Links lange gedrückt" */
+void vButtonLeLong( void )
+{
+}
+
+/* Funktion "Taste Links losgelassen" */
+void vButtonLeFree( void )
+{
+}
+
+
+/*******************************************
+ * APP1 - Tastenabfrage
+ *******************************************/
+void vTasteLi( void )
+{
+}
+
+/*******************************************
+ * APP2 - LCD-Ausgabe
+ *******************************************/
+void vLcdOut( void )
+{
+}
+
+void BtnUp()
+{
+    binBtnCheck=0;
+    timerSoLangeGedrueckt.stop();
+    timerSoLangeGedrueckt.reset();
+}
+
+void BtnDown()
+{
+    timerSoLangeGedrueckt.start();
+}
+
+/* Hauptprogramm */
+int main()
+{
+    int binOnOff=0; //Switch für an-aus schalten der Stoippuhr
+    bBtnLinks.rise(&BtnUp);
+    bBtnLinks.fall(&BtnDown);
+    byte i = 5;
+    bStandby = 0;
+    bLcdState = enOff;
+    fStoppUhr = 0;
+    stTick.attach_us(&vTimerTick, 20000);
+
+
+
+    while(1) {
+
+        if (timerSoLangeGedrueckt.read_ms()>=nTastLong) {
+            timer.stop();
+            timer.reset();
+        }
+
+        if (!binBtnCheck && !bLinks) { /* Knopf kurz drücken*/
+            binBtnCheck=1;
+#if define test
+            stLcd.locate(0,0);
+            stLcd.printf("Ich bin Stoppuhrr - was los!? ");
+#endif
+            
+
+            if (binOnOff)
+                timer.stop();
+            else
+                timer.start();
+
+            binOnOff=!binOnOff; //umschalten zwichen an und aus
+            stLcd.locate(0,1);
+            //stLcd.printf("%d. mal",binOnOff, 20);
+
+        }
+
+        //-> ausgabe der aktuellen Zeit
+        stLcd.locate(0,2);
+        stLcd.printf("%.2lfs", timer.read());
+        //<-
+
+        while(bStandby == 0);
+        bStandby = 0;
+        vTasteLi();
+        i--;
+        if(i == 0) {
+            i = 5;
+            vLcdOut();
+        }
+    }
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Thu Jun 26 08:20:29 2014 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/024bf7f99721
\ No newline at end of file