main.cpp

00001 /*
00002  *  LCD module "SB1602E" test application
00003  *
00004  *  SB1602E is an I2C based low voltage text LCD panel (based Sitronix ST7032 chip)
00005  *  The module by StrawberryLinux
00006  *  http://strawberry-linux.com/catalog/items?code=27002 (Online shop page (Japanese))
00007  *  http://strawberry-linux.com/pub/ST7032i.pdf (datasheet of the chip)
00008  *
00009  *  Copyright (c) 2010 Tedd OKANO
00010  *  Released under the MIT License: http://mbed.org/license/mit
00011  *
00012  *  revision 1.0  22-Jan-2010   a. 1st release
00013  *  revision 1.1  23-Jan-2010   a. class and app name has been changed from lcd_SB1602E to TextLCD_SB1602E
00014  *                              b. printf() test added
00015  *                              c. copyright notice added
00016  */
00017 
00018 #include    "mbed.h"
00019 #include    "SB1602E.h"
00020 
00021 #define     TEST_LOOP                    1
00022 #define     DEFAULT_TIME_INTERVAL        1.0
00023 #define     DEFAULT_TIME_INTERVAL_PUTx   0.2
00024 
00025 #define     CONTRAST_ADJUST_TEST
00026 #define     PRINTF_TEST
00027 #define     CGRAM_FUNCTION_TEST
00028 #define     PUTS_TEST_WITH_ESCAPE
00029 #define     PUTS_TEST_WITHOUT_ESCAPE
00030 #define     PUTC_TEST
00031 //#define     ICON_TEST  (This has not been tested by Okano, sorry)
00032 
00033 Serial  pc( USBTX, USBRX ); // tx, rx
00034 SB1602E lcd( p9, p10 );     //  SDA, SCL
00035 //SB1602E lcd( p28, p27 );  //  SDA, SCL
00036 
00037 static char    cg[8][8]        =    {// I hope I can improve this bitmap sometime in future (^^;
00038     { 0x1E, 0x1F, 0x1F, 0x1D, 0x1C, 0x1C, 0x1C, 0x1C },
00039     { 0x01, 0x02, 0x13, 0x1B, 0x1F, 0x1F, 0x0F, 0x15 },
00040     { 0x19, 0x1D, 0x1F, 0x0F, 0x1F, 0x0F, 0x1D, 0x18 },
00041     { 0x1F, 0x1D, 0x16, 0x1E, 0x17, 0x1F, 0x1A, 0x1C },
00042     { 0x1E, 0x1F, 0x07, 0x07, 0x1F, 0x1E, 0x00, 0x00 },
00043     { 0xAA, 0x55, 0xAA, 0x55, 0xAA, 0x55, 0xAA, 0x55 },
00044     { 0x44, 0x11, 0x44, 0x11, 0x44, 0x11, 0x44, 0x11 },
00045     { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
00046 };
00047 
00048 void lcd_test( void );
00049 void set_lines_fixed_value( char line, char value );
00050 void block_pattaern( char direction, char polarity );
00051 
00052 
00053 int main() {
00054     lcd.puts( 0, "TextLCD SB1602E \r" );
00055 
00056     for ( int i = 10; i > 0; i-- ) {
00057         lcd.printf( 1, "  count down: %2d\r", i );
00058         wait( 1.0 );
00059     }
00060 
00061     do {
00062         lcd_test();
00063     } while ( TEST_LOOP );
00064 }
00065 
00066 void lcd_test( void ) {
00067     char    s[ 18 ];
00068     int        i;
00069 
00070     pc.printf( "LCD test runing\n" );
00071     lcd.contrast( DEFAULT_CONTRAST );
00072 
00073 #ifdef CONTRAST_ADJUST_TEST
00074     pc.printf( "  CONTRAST_ADJUST_TEST\n" );
00075     lcd.clear();
00076     lcd.puts( 1, "\x07\x07\x07\x07\x07 contrast()\r" );
00077     wait( DEFAULT_TIME_INTERVAL );
00078 
00079     lcd.puts( 0, "ABCDEFGHIJKLMNOP\r" );
00080 
00081     for ( int t = 0; t < 2; t++ ) {
00082         for ( i = 0; i <= 0x3F; i++ ) {
00083 
00084             lcd.printf( 1, "  cntrst = 0x%02X\r", i );
00085             lcd.contrast( i );
00086             wait ( 0.02 );
00087         }
00088 
00089         for ( i = 0x3E; i > 0 ; i-- ) {
00090             sprintf( s, "  cntrst = 0x%02X\r", i );
00091             lcd.puts( 1, s );
00092             lcd.contrast( i );
00093             wait ( 0.02 );
00094         }
00095     }
00096 
00097     lcd.contrast( DEFAULT_CONTRAST );
00098 
00099 #endif
00100 #ifdef PRINTF_TEST
00101 
00102     pc.printf( "  PRINTF_TEST\n" );
00103     lcd.clear();
00104     lcd.puts( 1, "\x07\x07\x07\x07\x07\x07\x07 printf()\r" );
00105     wait( DEFAULT_TIME_INTERVAL );
00106 
00107     lcd.printf( 0, "%%6.4f, %%c, %%X\"\r" );
00108     for ( i = -37; i < 37; i++ ) {
00109         lcd.printf( 1, "%6.4f, %c, %x\r", (float)i / 37.0, 'a' + i, i + 37 );
00110         wait ( 0.1 );
00111     }
00112 
00113 #endif
00114 #ifdef CGRAM_FUNCTION_TEST
00115     pc.printf( "  CGRAM_FUNCTION_TEST\n" );
00116     lcd.clear();
00117     lcd.puts( 1, "\x07\x07\x07\x07 set_CGRAM()\r" );
00118     wait( DEFAULT_TIME_INTERVAL );
00119 
00120     for ( i = 0; i < 8; i++ )
00121         lcd.put_custom_char( i, cg[ i ], i, 0 );
00122 
00123     for ( i = 0; i < 8; i++ )
00124         lcd.put_custom_char( i, cg[ i ], i + 8, 0 );
00125 
00126     for ( i = 0; i < 8; i++ )
00127         lcd.put_custom_char( i, cg[ i ], i, 1 );
00128 
00129     for ( i = 0; i < 8; i++ )
00130         lcd.put_custom_char( i, cg[ i ], i + 8, 1 );
00131 
00132     wait( DEFAULT_TIME_INTERVAL );
00133     lcd.clear();
00134     lcd.set_CGRAM( 7, '\x1F' );
00135 
00136     lcd.set_CGRAM( 0, '\0' );
00137     lcd.set_CGRAM( 1, '\0' );
00138     lcd.set_CGRAM( 0, '\0' );
00139     lcd.set_CGRAM( 1, '\0' );
00140     set_lines_fixed_value( 0, 1 );
00141     set_lines_fixed_value( 1, 0 );
00142 
00143     block_pattaern( 0, 0 );
00144     block_pattaern( 0, 1 );
00145     block_pattaern( 1, 0 );
00146     block_pattaern( 1, 1 );
00147 
00148 
00149 #endif
00150 #ifdef PUTS_TEST_WITH_ESCAPE
00151     pc.printf( "  PUTS_TEST_WITH_ESCAPE\n" );
00152     lcd.clear();
00153     lcd.puts( 1, "\x07\x07\x07 puts(\"..\\r\")\r" );
00154     wait( DEFAULT_TIME_INTERVAL );
00155 
00156     lcd.puts( 0, "\rWelcome to mbed!\r" );
00157     lcd.puts( 1, "\rwww.mbed.com\r" );
00158     wait( DEFAULT_TIME_INTERVAL );
00159     lcd.puts( 0, "       This is a\r" );
00160     lcd.puts( 1, "        LCD test\r" );
00161     wait( DEFAULT_TIME_INTERVAL );
00162     lcd.puts( 0, "  22-Jan-2010\r" );
00163     lcd.puts( 1, "  Hello world!\r" );
00164     wait( DEFAULT_TIME_INTERVAL );
00165 
00166 #endif
00167 #ifdef PUTS_TEST_WITHOUT_ESCAPE
00168     pc.printf( "  PUTS_TEST_WITHOUT_ESCAPE\n" );
00169     lcd.clear();
00170     lcd.puts( 0, "\r" );
00171     lcd.puts( 1, "\x07\x07\x07\x07\x07 puts(\"..\")\r" );
00172     wait( DEFAULT_TIME_INTERVAL );
00173 
00174     lcd.puts( 0, "0" );
00175     lcd.puts( 1, "ABC" );
00176     wait( DEFAULT_TIME_INTERVAL_PUTx );
00177     lcd.puts( 0, "1" );
00178     lcd.puts( 1, "DEF" );
00179     wait( DEFAULT_TIME_INTERVAL_PUTx );
00180     lcd.puts( 0, "2" );
00181     lcd.puts( 1, "GHI" );
00182     wait( DEFAULT_TIME_INTERVAL_PUTx );
00183     lcd.puts( 0, "3" );
00184     lcd.puts( 1, "JKL" );
00185     wait( DEFAULT_TIME_INTERVAL_PUTx );
00186     lcd.puts( 0, "4" );
00187     lcd.puts( 1, "MNO" );
00188     wait( DEFAULT_TIME_INTERVAL_PUTx );
00189     lcd.puts( 0, "5" );
00190     lcd.puts( 1, "PQR" );
00191     wait( DEFAULT_TIME_INTERVAL_PUTx );
00192     lcd.puts( 0, "6" );
00193     wait( DEFAULT_TIME_INTERVAL_PUTx );
00194     lcd.puts( 0, "7" );
00195     wait( DEFAULT_TIME_INTERVAL_PUTx );
00196     lcd.puts( 0, "8" );
00197     wait( DEFAULT_TIME_INTERVAL_PUTx );
00198     lcd.puts( 0, "9" );
00199     wait( DEFAULT_TIME_INTERVAL_PUTx );
00200     lcd.puts( 0, "A" );
00201     wait( DEFAULT_TIME_INTERVAL_PUTx );
00202     lcd.puts( 0, "B" );
00203     wait( DEFAULT_TIME_INTERVAL_PUTx );
00204     lcd.puts( 0, "C" );
00205     wait( DEFAULT_TIME_INTERVAL_PUTx );
00206     lcd.puts( 0, "D" );
00207     wait( DEFAULT_TIME_INTERVAL_PUTx );
00208     lcd.puts( 0, "E" );
00209     wait( DEFAULT_TIME_INTERVAL_PUTx );
00210     lcd.puts( 0, "F" );
00211     wait( DEFAULT_TIME_INTERVAL_PUTx );
00212 
00213 #endif
00214 #ifdef PUTC_TEST
00215     pc.printf( "  PUTC_TEST\n" );
00216     lcd.clear();
00217     lcd.puts( 1, "\x07\x07\x07\x07\x07\x07\x07\x07\x07 putc()\r" );
00218     wait( DEFAULT_TIME_INTERVAL );
00219 
00220     for ( i = 0; i < 16; i++ ) {
00221         lcd.putc( 0, '0' + i );
00222         lcd.putc( 1, 'A' + i );
00223         wait( DEFAULT_TIME_INTERVAL_PUTx );
00224     }
00225 #endif
00226 #ifdef ICON_TEST
00227     pc.printf( "  ICON_TEST\n" );
00228     lcd.clear();
00229     lcd.puts( 1, "\x07\x07\x07\x07\x07\x07 puticon()\r" );
00230     unsigned short flg = 0;
00231     for (i = 0; i < 13; i++) {
00232         flg |= (1 << i);
00233         lcd.puticon(flg);
00234         wait( DEFAULT_TIME_INTERVAL_PUTx );
00235     }
00236     wait( DEFAULT_TIME_INTERVAL );
00237     lcd.puticon(0);
00238 #endif
00239 }
00240 
00241 void set_lines_fixed_value( char line, char value ) {
00242     for ( int i = 0; i < 16; i++ )
00243         lcd.putc( line, value );
00244 
00245     lcd.puts( line, "\r" );
00246 }
00247 
00248 
00249 void block_pattaern( char direction, char polarity ) {
00250     char    c[ 8 ];
00251 
00252     for ( int x = 0; x < 2; x++ ) {
00253         for ( int i = 0; i < 8; i++ ) {
00254             for ( int j = 0; j < 8; j++ ) {
00255                 if ( j <= i )
00256                     c[ (direction ? j : 7 - j) ]    = (polarity ?  0x00: ~0x00 );
00257                 else
00258                     c[ (direction ? j : 7 - j) ]    = (polarity ? ~0x00 : 0x00 );
00259             }
00260 
00261             lcd.set_CGRAM( (x ? (direction ? 0 : 1) : (direction ? 1 : 0)), c );
00262             wait( 0.05 );
00263         }
00264     }
00265 }
00266