Revision 0:694061176edf, committed 2010-01-23

Comitter:

okano

Date:

Sat Jan 23 13:45:18 2010 +0000

Commit message:

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/I2cBusDevice.h	Sat Jan 23 13:45:18 2010 +0000
@@ -0,0 +1,58 @@
+/*
+ *  I2C device base class
+ *
+ *  A base class for all I2C devices.
+ *  This manages the device address and transfers
+ *
+ *  Copyright (c) 2010 Tedd OKANO
+ *  Released under the MIT License: http://mbed.org/license/mit
+ *
+ *  revision 1.0  15-Jan-2010   a. 1st release
+ *  revision 1.1  23-Jan-2010   a. The word "MBED_I2cBusDevice" is used instead of _I2cBusDevice_ to avoid symbol conflict
+ *                              b. copyright notice added
+ */
+
+#ifndef    MBED_I2cBusDevice
+#define    MBED_I2cBusDevice
+
+#include    "mbed.h"
+
+class I2cBusDevice {
+public:
+
+    I2cBusDevice( I2C *i2c, char dev_address ) {
+        bus          = i2c;
+        device       = dev_address;
+    }
+
+    ~I2cBusDevice() {
+    }
+
+    int write( char *data, int length ) {
+        return ( bus->write( device, data, length) );
+    }
+
+    int read( char *data, int length ) {
+        return ( bus->read( device, data, length) );
+    }
+
+    int read( char reg_ptr, char *data, int length ) {
+        if ( bus->write( device, &reg_ptr, 1 ) )
+            return ( 1 );
+
+        if ( bus->read( device, data, length ) )
+            return ( 1 );
+
+        return ( 0 );
+    }
+
+protected:
+    I2C     *bus;
+    char    device;
+
+private:
+    static char    i2c_error;
+}
+;
+
+#endif

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/TextLCD_SB1602E.h	Sat Jan 23 13:45:18 2010 +0000
@@ -0,0 +1,239 @@
+/*
+ *  LCD module "SB1602E" library
+ *
+ *  SB1602E is an I2C based low voltage text LCD panel (based Sitronix ST7032 chip)
+ *  The module by StrawberryLinux
+ *  http://strawberry-linux.com/catalog/items?code=27002 (Online shop page (Japanese))
+ *  http://strawberry-linux.com/pub/ST7032i.pdf (datasheet of the chip)
+ *
+ *  This is a library to operate this module easy.
+ *
+ *  Copyright (c) 2010 Tedd OKANO
+ *  Released under the MIT License: http://mbed.org/license/mit
+ *
+ *  revision 1.0  22-Jan-2010   a. 1st release
+ *  revision 1.1  23-Jan-2010   a. class name has been changed from lcd_SB1602E to TextLCD_SB1602E
+ *                               b. printf() added
+ *                              c. copyright notice added
+ */
+
+#ifndef        MBED_TextLCD_SB1602E
+#define        MBED_TextLCD_SB1602E
+
+#include    <stdarg.h>
+#include    "mbed.h"
+#include    "I2cBusDevice.h"
+
+//  SB1602E IIC address
+
+const char    SB1602E_addr = 0x7C;
+
+//  SB1602E initialization command sequence
+
+#ifdef INIT_VALUE_DATASHEET_ORIGINAL
+
+const char    Comm_FunctionSet_Normal      = 0x38;
+const char    Comm_FunctionSet_Extended    = 0x39;
+const char    Comm_InternalOscFrequency    = 0x14;
+const char    Comm_ContrastSet             = 0x78;
+const char    Comm_PwrIconContrast         = 0x5E;
+const char    Comm_FollowerCtrl            = 0x6A;
+const char    Comm_DisplayOnOff            = 0x0C;
+const char    Comm_ClearDisplay            = 0x01;
+const char    Comm_EntryModeSet            = 0x06;
+
+#else
+
+const char    Comm_FunctionSet_Normal      = 0x38;
+const char    Comm_FunctionSet_Extended    = 0x39;
+const char    Comm_InternalOscFrequency    = 0x14;
+const char    Comm_ContrastSet             = 0x70;
+const char    Comm_PwrIconContrast         = 0x5C;
+const char    Comm_FollowerCtrl            = 0x60;
+const char    Comm_DisplayOnOff            = 0x0C;
+const char    Comm_ClearDisplay            = 0x01;
+const char    Comm_EntryModeSet            = 0x04;
+const char    Comm_ReturnHome              = 0x02;
+
+#endif
+
+//  SB1602E general commands
+
+const char    Comm_SetDDRAMAddress        = 0x80;
+const char    DDRAMAddress_Ofst[]         = { 0x00, 0x40 };
+
+const char    Comm_SetCGRAM               = 0x40;
+
+//  SB1602E setting values
+
+const char    default_Contrast            = 0x35;
+
+const char    COMMAND                     = 0x00;
+const char    DATA                        = 0x40;
+
+const char    MaxCharsInALine             = 0x10;    //    buffer deoth for one line (no scroll function used)
+
+const char    init_seq0_length  = 7;
+const char    init_seq0[ init_seq0_length ]
+=    {
+    Comm_FunctionSet_Normal,
+    Comm_ReturnHome,             //    This may be required to reset the scroll function
+    Comm_FunctionSet_Extended,
+    Comm_InternalOscFrequency,
+    Comm_ContrastSet            | ( default_Contrast       & 0xF),
+    Comm_PwrIconContrast        | ((default_Contrast >> 4) & 0x3),
+    Comm_FollowerCtrl           | 0x0A,
+
+};
+// required 30us interval
+
+const char    init_seq1_length  = 3;
+const char    init_seq1[ init_seq1_length ]
+=    {
+    Comm_DisplayOnOff,
+    Comm_ClearDisplay,
+    Comm_EntryModeSet,
+};
+// required 30us, 2ms interval
+
+
+class TextLCD_SB1602E : I2cBusDevice {
+public:
+
+    explicit TextLCD_SB1602E( I2C *i2c, char dev_address = SB1602E_addr, char *init_massage = NULL ) : I2cBusDevice( i2c, dev_address ) {
+        wait( 0.04 );    //    interval after hardware reset
+
+        for ( int i = 0; i < init_seq0_length; i++ ) {
+            lcd_command( init_seq0[ i ] );
+            wait( 30e-6 );
+        }
+
+        wait( 0.2 );
+
+        for ( int i = 0; i < init_seq1_length; i++ ) {
+            lcd_command( init_seq1[ i ] );
+            wait( 2e-3 );
+        }
+
+        if ( init_massage )
+            puts( 0, init_massage );
+
+        set_CGRAM( 7, '\x1F' );
+
+        curs[ 0 ]    = 0;
+        curs[ 1 ]    = 0;
+    }
+
+
+    ~TextLCD_SB1602E() {
+    }
+
+    void clear( void ) {
+        lcd_command( Comm_ClearDisplay );
+        wait( 2e-3 );
+        curs[ 0 ]    = 0;
+        curs[ 1 ]    = 0;
+    }
+
+
+    void put_custom_char( char c_code, const char *cg, char x, char y ) {
+        for ( int i = 0; i < 5; i++ ) {
+            set_CGRAM( c_code, cg );
+            putcxy( c_code, x, y );
+        }
+    }
+
+    void contrast( char contrast ) {
+        lcd_command( Comm_FunctionSet_Extended );
+        lcd_command( Comm_ContrastSet         |  (contrast     & 0x0f) );
+        lcd_command( Comm_PwrIconContrast     | ((contrast>>4) & 0x03) );
+        lcd_command( Comm_FunctionSet_Normal   );
+    }
+
+    void set_CGRAM( char char_code, const char* cg ) {
+        for ( int i = 0; i < 8; i++ ) {
+            lcd_command( (Comm_SetCGRAM | (char_code << 3) | i) );
+            lcd_data( *cg++ );
+        }
+    }
+
+    void set_CGRAM( char char_code, char v ) {
+        char    c[ 8 ];
+
+        for ( int i = 0; i < 8; i++ )
+            c[ i ]    = v;
+
+        set_CGRAM( char_code, c );
+    }
+
+    void putcxy( char c, char x, char y ) {
+        if ( (x >= MaxCharsInALine) || (y >= 2) )
+            return;
+
+        lcd_command( (Comm_SetDDRAMAddress | DDRAMAddress_Ofst[ y ]) + x );
+        lcd_data( c );
+    }
+
+    void putc( char line, char c ) {
+        if ( (c == '\n') || (c == '\r') ) {
+            clear_lest_of_line( line );
+            curs[ line ]    = 0;
+            return;
+        }
+
+        putcxy( c, curs[ line ]++, line );
+    }
+
+    void puts( char line, char *s ) {
+        while ( char c    = *s++ )
+            putc( line, c );
+    }
+
+    void printf( char line, char *format, ... ) {
+        char        s[ 32 ];
+        va_list        args;
+
+        va_start( args, format );
+        vsnprintf( s, 32, format, args );
+        va_end( args );
+
+        puts( line, s );
+    }
+
+private:
+    char    curs[2];
+
+    void clear_lest_of_line( char line ) {
+        for ( int i = curs[ line ]; i < MaxCharsInALine; i++ )
+            putcxy( ' ', i, line );
+    }
+
+    int lcd_write( char first, char second ) {
+        char cmd[2];
+
+        cmd[ 0 ]    = first;
+        cmd[ 1 ]    = second;
+
+        return ( write( cmd, 2 ) );
+
+    }
+
+    int lcd_command( char command ) {
+        return ( lcd_write( COMMAND, command ) );
+    }
+
+    int lcd_data( char data ) {
+        return ( lcd_write( DATA, data ) );
+    }
+}
+;
+
+#endif
+
+
+
+
+
+
+
+

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/TextLCD_SB1602E_test.cpp	Sat Jan 23 13:45:18 2010 +0000
@@ -0,0 +1,253 @@
+/*
+ *  LCD module "SB1602E" test application
+ *
+ *  SB1602E is an I2C based low voltage text LCD panel (based Sitronix ST7032 chip)
+ *  The module by StrawberryLinux
+ *  http://strawberry-linux.com/catalog/items?code=27002 (Online shop page (Japanese))
+ *  http://strawberry-linux.com/pub/ST7032i.pdf (datasheet of the chip)
+ *
+ *  Copyright (c) 2010 Tedd OKANO
+ *  Released under the MIT License: http://mbed.org/license/mit
+ *
+ *  revision 1.0  22-Jan-2010   a. 1st release
+ *  revision 1.1  23-Jan-2010   a. class and app name has been changed from lcd_SB1602E to TextLCD_SB1602E
+ *                              b. printf() test added
+ *                              c. copyright notice added
+ */
+
+#include    "mbed.h"
+#include    "TextLCD_SB1602E.h"
+
+#define        TEST_LOOP                    1
+#define        DEFAULT_TIME_INTERVAL        1.0
+#define        DEFAULT_TIME_INTERVAL_PUTx   0.2
+
+#define        CONTRAST_ADJUST_TEST
+#define        PRINTF_TEST
+#define        CGRAM_FUNCTION_TEST
+#define        PUTS_TEST_WITH_ESCAPE
+#define        PUTS_TEST_WITHOUT_ESCAPE
+#define        PUTC_TEST
+
+
+I2C                i2c( p9, p10 );        // sda, scl
+Serial            pc( USBTX, USBRX ); // tx, rx
+TextLCD_SB1602E    lcd( &i2c );
+
+static char    cg[8][8]        =    {// I hope I can improve this bitmap sometime in future (^^;
+    { 0x1E, 0x1F, 0x1F, 0x1D, 0x1C, 0x1C, 0x1C, 0x1C },
+    { 0x01, 0x02, 0x13, 0x1B, 0x1F, 0x1F, 0x0F, 0x15 },
+    { 0x19, 0x1D, 0x1F, 0x0F, 0x1F, 0x0F, 0x1D, 0x18 },
+    { 0x1F, 0x1D, 0x16, 0x1E, 0x17, 0x1F, 0x1A, 0x1C },
+    { 0x1E, 0x1F, 0x07, 0x07, 0x1F, 0x1E, 0x00, 0x00 },
+    { 0xAA, 0x55, 0xAA, 0x55, 0xAA, 0x55, 0xAA, 0x55 },
+    { 0x44, 0x11, 0x44, 0x11, 0x44, 0x11, 0x44, 0x11 },
+    { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
+};
+
+void lcd_test( void );
+void set_lines_fixed_value( char line, char value );
+void block_pattaern( char direction, char polarity );
+
+
+int main() {
+    lcd.puts( 0, "TextLCD_SB1602E \r" );
+
+    for ( int i = 10; i > 0; i-- ) {
+        lcd.printf( 1, "  count down: %2d\r", i );
+        wait( 1.0 );
+    }
+
+    do {
+        lcd_test();
+    } while ( TEST_LOOP );
+}
+
+void lcd_test( void ) {
+    char    s[ 18 ];
+    int        i;
+
+    pc.printf( "LCD test runing\n" );
+    lcd.contrast( default_Contrast );
+
+#ifdef CONTRAST_ADJUST_TEST
+    pc.printf( "  CONTRAST_ADJUST_TEST\n" );
+    lcd.clear();
+    lcd.puts( 1, "\x07\x07\x07\x07\x07 contrast()\r" );
+    wait( DEFAULT_TIME_INTERVAL );
+
+    lcd.puts( 0, "ABCDEFGHIJKLMNOP\r" );
+
+    for ( int t = 0; t < 2; t++ ) {
+        for ( i = 0; i <= 0x3F; i++ ) {
+
+            lcd.printf( 1, "  cntrst = 0x%02X\r", i );
+            lcd.contrast( i );
+            wait ( 0.02 );
+        }
+
+        for ( i = 0x3E; i > 0 ; i-- ) {
+            sprintf( s, "  cntrst = 0x%02X\r", i );
+            lcd.puts( 1, s );
+            lcd.contrast( i );
+            wait ( 0.02 );
+        }
+
+    }
+
+    lcd.contrast( default_Contrast );
+
+#endif
+#ifdef PRINTF_TEST
+
+    pc.printf( "  PRINTF_TEST\n" );
+    lcd.clear();
+    lcd.puts( 1, "\x07\x07\x07\x07\x07\x07\x07 printf()\r" );
+    wait( DEFAULT_TIME_INTERVAL );
+
+    lcd.printf( 0, "%%6.4f, %%c, %%X\"\r" );
+    for ( i = -37; i < 37; i++ ) {
+        lcd.printf( 1, "%6.4f, %c, %x\r", (float)i / 37.0, 'a' + i, i + 37 );
+        wait ( 0.1 );
+    }
+
+#endif
+#ifdef CGRAM_FUNCTION_TEST
+    pc.printf( "  CGRAM_FUNCTION_TEST\n" );
+    lcd.clear();
+    lcd.puts( 1, "\x07\x07\x07\x07 set_CGRAM()\r" );
+    wait( DEFAULT_TIME_INTERVAL );
+
+    for ( i = 0; i < 8; i++ )
+        lcd.put_custom_char( i, cg[ i ], i, 0 );
+
+    for ( i = 0; i < 8; i++ )
+        lcd.put_custom_char( i, cg[ i ], i + 8, 0 );
+
+    for ( i = 0; i < 8; i++ )
+        lcd.put_custom_char( i, cg[ i ], i, 1 );
+
+    for ( i = 0; i < 8; i++ )
+        lcd.put_custom_char( i, cg[ i ], i + 8, 1 );
+
+    wait( DEFAULT_TIME_INTERVAL );
+    lcd.clear();
+    lcd.set_CGRAM( 7, '\x1F' );
+
+    lcd.set_CGRAM( 0, '\0' );
+    lcd.set_CGRAM( 1, '\0' );
+    lcd.set_CGRAM( 0, '\0' );
+    lcd.set_CGRAM( 1, '\0' );
+    set_lines_fixed_value( 0, 1 );
+    set_lines_fixed_value( 1, 0 );
+
+    block_pattaern( 0, 0 );
+    block_pattaern( 0, 1 );
+    block_pattaern( 1, 0 );
+    block_pattaern( 1, 1 );
+
+
+#endif
+#ifdef PUTS_TEST_WITH_ESCAPE
+    pc.printf( "  PUTS_TEST_WITH_ESCAPE\n" );
+    lcd.clear();
+    lcd.puts( 1, "\x07\x07\x07 puts(\"..\\r\")\r" );
+    wait( DEFAULT_TIME_INTERVAL );
+
+    lcd.puts( 0, "\rWelcome to mbed!\r" );
+    lcd.puts( 1, "\rwww.mbed.com\r" );
+    wait( DEFAULT_TIME_INTERVAL );
+    lcd.puts( 0, "       This is a\r" );
+    lcd.puts( 1, "        LCD test\r" );
+    wait( DEFAULT_TIME_INTERVAL );
+    lcd.puts( 0, "  22-Jan-2010\r" );
+    lcd.puts( 1, "  Hello world!\r" );
+    wait( DEFAULT_TIME_INTERVAL );
+
+#endif
+#ifdef PUTS_TEST_WITHOUT_ESCAPE
+    pc.printf( "  PUTS_TEST_WITHOUT_ESCAPE\n" );
+    lcd.clear();
+    lcd.puts( 0, "\r" );
+    lcd.puts( 1, "\x07\x07\x07\x07\x07 puts(\"..\")\r" );
+    wait( DEFAULT_TIME_INTERVAL );
+
+    lcd.puts( 0, "0" );
+    lcd.puts( 1, "ABC" );
+    wait( DEFAULT_TIME_INTERVAL_PUTx );
+    lcd.puts( 0, "1" );
+    lcd.puts( 1, "DEF" );
+    wait( DEFAULT_TIME_INTERVAL_PUTx );
+    lcd.puts( 0, "2" );
+    lcd.puts( 1, "GHI" );
+    wait( DEFAULT_TIME_INTERVAL_PUTx );
+    lcd.puts( 0, "3" );
+    lcd.puts( 1, "JKL" );
+    wait( DEFAULT_TIME_INTERVAL_PUTx );
+    lcd.puts( 0, "4" );
+    lcd.puts( 1, "MNO" );
+    wait( DEFAULT_TIME_INTERVAL_PUTx );
+    lcd.puts( 0, "5" );
+    lcd.puts( 1, "PQR" );
+    wait( DEFAULT_TIME_INTERVAL_PUTx );
+    lcd.puts( 0, "6" );
+    wait( DEFAULT_TIME_INTERVAL_PUTx );
+    lcd.puts( 0, "7" );
+    wait( DEFAULT_TIME_INTERVAL_PUTx );
+    lcd.puts( 0, "8" );
+    wait( DEFAULT_TIME_INTERVAL_PUTx );
+    lcd.puts( 0, "9" );
+    wait( DEFAULT_TIME_INTERVAL_PUTx );
+    lcd.puts( 0, "A" );
+    wait( DEFAULT_TIME_INTERVAL_PUTx );
+    lcd.puts( 0, "B" );
+    wait( DEFAULT_TIME_INTERVAL_PUTx );
+    lcd.puts( 0, "C" );
+    wait( DEFAULT_TIME_INTERVAL_PUTx );
+    lcd.puts( 0, "D" );
+    wait( DEFAULT_TIME_INTERVAL_PUTx );
+    lcd.puts( 0, "E" );
+    wait( DEFAULT_TIME_INTERVAL_PUTx );
+    lcd.puts( 0, "F" );
+    wait( DEFAULT_TIME_INTERVAL_PUTx );
+
+#endif
+#ifdef PUTC_TEST
+    pc.printf( "  PUTC_TEST\n" );
+    lcd.clear();
+    lcd.puts( 1, "\x07\x07\x07\x07\x07\x07\x07\x07\x07 putc()\r" );
+    wait( DEFAULT_TIME_INTERVAL );
+
+    for ( i = 0; i < 16; i++ ) {
+        lcd.putc( 0, '0' + i );
+        lcd.putc( 1, 'A' + i );
+        wait( DEFAULT_TIME_INTERVAL_PUTx );
+    }
+#endif
+}
+
+void set_lines_fixed_value( char line, char value ) {
+    for ( int i = 0; i < 16; i++ )
+        lcd.putc( line, value );
+
+    lcd.puts( line, "\r" );
+}
+
+
+void block_pattaern( char direction, char polarity ) {
+    char    c[ 8 ];
+
+    for ( int x = 0; x < 2; x++ ) {
+        for ( int i = 0; i < 8; i++ ) {
+            for ( int j = 0; j < 8; j++ ) {
+                if ( j <= i )
+                    c[ (direction ? j : 7 - j) ]    = (polarity ?  0x00: ~0x00 );
+                else
+                    c[ (direction ? j : 7 - j) ]    = (polarity ? ~0x00 : 0x00 );
+            }
+
+            lcd.set_CGRAM( (x ? (direction ? 0 : 1) : (direction ? 1 : 0)), c );
+            wait( 0.05 );
+        }
+    }
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Sat Jan 23 13:45:18 2010 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/49a220cc26e0