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hepta_sat/HeptaLcd.h@3:e61ac065965e, 2016-12-15 (annotated)

Committer:
MEXT1
Date:
Thu Dec 15 04:53:16 2016 +0000
Revision:
3:e61ac065965e
Parent:
0:8d235efb1150 
SDFileSystem

Who changed what in which revision?

UserRevisionLine numberNew contents of line
tomoya123 0:8d235efb1150 1 #ifndef MBED_HeptaLcd
tomoya123 0:8d235efb1150 2 #define MBED_HeptaLcd
tomoya123 0:8d235efb1150 3
tomoya123 0:8d235efb1150 4 #include <stdarg.h>
tomoya123 0:8d235efb1150 5 #include "mbed.h"
tomoya123 0:8d235efb1150 6 #include "I2cBusDevice.h"
tomoya123 0:8d235efb1150 7
tomoya123 0:8d235efb1150 8 // SB1602E IIC address
tomoya123 0:8d235efb1150 9
tomoya123 0:8d235efb1150 10 const char SB1602E_addr = 0x7C;
tomoya123 0:8d235efb1150 11
tomoya123 0:8d235efb1150 12 // SB1602E initialization command sequence
tomoya123 0:8d235efb1150 13
tomoya123 0:8d235efb1150 14 #ifdef INIT_VALUE_DATASHEET_ORIGINAL
tomoya123 0:8d235efb1150 15
tomoya123 0:8d235efb1150 16 const char Comm_FunctionSet_Normal = 0x38;
tomoya123 0:8d235efb1150 17 const char Comm_FunctionSet_Extended = 0x39;
tomoya123 0:8d235efb1150 18 const char Comm_InternalOscFrequency = 0x14;
tomoya123 0:8d235efb1150 19 const char Comm_ContrastSet = 0x78;
tomoya123 0:8d235efb1150 20 const char Comm_PwrIconContrast = 0x5E;
tomoya123 0:8d235efb1150 21 const char Comm_FollowerCtrl = 0x6A;
tomoya123 0:8d235efb1150 22 const char Comm_DisplayOnOff = 0x0C;
tomoya123 0:8d235efb1150 23 const char Comm_ClearDisplay = 0x01;
tomoya123 0:8d235efb1150 24 const char Comm_EntryModeSet = 0x06;
tomoya123 0:8d235efb1150 25
tomoya123 0:8d235efb1150 26 #else
tomoya123 0:8d235efb1150 27
tomoya123 0:8d235efb1150 28 const char Comm_FunctionSet_Normal = 0x38;
tomoya123 0:8d235efb1150 29 const char Comm_FunctionSet_Extended = 0x39;
tomoya123 0:8d235efb1150 30 const char Comm_InternalOscFrequency = 0x14;
tomoya123 0:8d235efb1150 31 const char Comm_ContrastSet = 0x70;
tomoya123 0:8d235efb1150 32 const char Comm_PwrIconContrast = 0x5C;
tomoya123 0:8d235efb1150 33 const char Comm_FollowerCtrl = 0x60;
tomoya123 0:8d235efb1150 34 const char Comm_DisplayOnOff = 0x0C;
tomoya123 0:8d235efb1150 35 const char Comm_ClearDisplay = 0x01;
tomoya123 0:8d235efb1150 36 const char Comm_EntryModeSet = 0x04;
tomoya123 0:8d235efb1150 37 const char Comm_ReturnHome = 0x02;
tomoya123 0:8d235efb1150 38
tomoya123 0:8d235efb1150 39 #endif
tomoya123 0:8d235efb1150 40
tomoya123 0:8d235efb1150 41 // SB1602E general commands
tomoya123 0:8d235efb1150 42
tomoya123 0:8d235efb1150 43 const char Comm_SetDDRAMAddress = 0x80;
tomoya123 0:8d235efb1150 44 const char DDRAMAddress_Ofst[] = { 0x00, 0x40 };
tomoya123 0:8d235efb1150 45
tomoya123 0:8d235efb1150 46 const char Comm_SetCGRAM = 0x40;
tomoya123 0:8d235efb1150 47
tomoya123 0:8d235efb1150 48 // SB1602E setting values
tomoya123 0:8d235efb1150 49
tomoya123 0:8d235efb1150 50 const char default_Contrast = 0x35;
tomoya123 0:8d235efb1150 51
tomoya123 0:8d235efb1150 52 const char COMMAND = 0x00;
tomoya123 0:8d235efb1150 53 const char DATA = 0x40;
tomoya123 0:8d235efb1150 54
tomoya123 0:8d235efb1150 55 const char MaxCharsInALine = 0x10; // buffer deoth for one line (no scroll function used)
tomoya123 0:8d235efb1150 56
tomoya123 0:8d235efb1150 57 const char init_seq0_length = 7;
tomoya123 0:8d235efb1150 58 const char init_seq0[ init_seq0_length ]
tomoya123 0:8d235efb1150 59 = {
tomoya123 0:8d235efb1150 60 Comm_FunctionSet_Normal,
tomoya123 0:8d235efb1150 61 Comm_ReturnHome, // This may be required to reset the scroll function
tomoya123 0:8d235efb1150 62 Comm_FunctionSet_Extended,
tomoya123 0:8d235efb1150 63 Comm_InternalOscFrequency,
tomoya123 0:8d235efb1150 64 Comm_ContrastSet | ( default_Contrast & 0xF),
tomoya123 0:8d235efb1150 65 Comm_PwrIconContrast | ((default_Contrast >> 4) & 0x3),
tomoya123 0:8d235efb1150 66 Comm_FollowerCtrl | 0x0A,
tomoya123 0:8d235efb1150 67
tomoya123 0:8d235efb1150 68 };
tomoya123 0:8d235efb1150 69 // required 30us interval
tomoya123 0:8d235efb1150 70
tomoya123 0:8d235efb1150 71 const char init_seq1_length = 3;
tomoya123 0:8d235efb1150 72 const char init_seq1[ init_seq1_length ]
tomoya123 0:8d235efb1150 73 = {
tomoya123 0:8d235efb1150 74 Comm_DisplayOnOff,
tomoya123 0:8d235efb1150 75 Comm_ClearDisplay,
tomoya123 0:8d235efb1150 76 Comm_EntryModeSet,
tomoya123 0:8d235efb1150 77 };
tomoya123 0:8d235efb1150 78 // required 30us, 2ms interval
tomoya123 0:8d235efb1150 79
tomoya123 0:8d235efb1150 80
tomoya123 0:8d235efb1150 81 class HeptaLcd : I2cBusDevice {
tomoya123 0:8d235efb1150 82 public:
tomoya123 0:8d235efb1150 83 I2C lcd;
tomoya123 0:8d235efb1150 84 int addr;
tomoya123 0:8d235efb1150 85 explicit HeptaLcd(PinName sda, PinName scl, char dev_address = SB1602E_addr, char *init_massage = " " ) : lcd(sda,scl),addr(dev_address),I2cBusDevice(&lcd, dev_address ) {
tomoya123 0:8d235efb1150 86 wait( 0.04 ); // interval after hardware reset
tomoya123 0:8d235efb1150 87
tomoya123 0:8d235efb1150 88 for ( int i = 0; i < init_seq0_length; i++ ) {
tomoya123 0:8d235efb1150 89 lcd_command( init_seq0[ i ] );
tomoya123 0:8d235efb1150 90 wait( 30e-6 );
tomoya123 0:8d235efb1150 91 }
tomoya123 0:8d235efb1150 92
tomoya123 0:8d235efb1150 93 wait( 0.2 );
tomoya123 0:8d235efb1150 94
tomoya123 0:8d235efb1150 95 for ( int i = 0; i < init_seq1_length; i++ ) {
tomoya123 0:8d235efb1150 96 lcd_command( init_seq1[ i ] );
tomoya123 0:8d235efb1150 97 wait( 2e-3 );
tomoya123 0:8d235efb1150 98 }
tomoya123 0:8d235efb1150 99
tomoya123 0:8d235efb1150 100 if ( init_massage )
tomoya123 0:8d235efb1150 101 puts( 0, init_massage );
tomoya123 0:8d235efb1150 102
tomoya123 0:8d235efb1150 103 set_CGRAM( 7, '\x1F' );
tomoya123 0:8d235efb1150 104
tomoya123 0:8d235efb1150 105 curs[ 0 ] = 0;
tomoya123 0:8d235efb1150 106 curs[ 1 ] = 0;
tomoya123 0:8d235efb1150 107 }
tomoya123 0:8d235efb1150 108
tomoya123 0:8d235efb1150 109
tomoya123 0:8d235efb1150 110 ~HeptaLcd() {
tomoya123 0:8d235efb1150 111 }
tomoya123 0:8d235efb1150 112
tomoya123 0:8d235efb1150 113 void clear( void ) {
tomoya123 0:8d235efb1150 114 lcd_command( Comm_ClearDisplay );
tomoya123 0:8d235efb1150 115 wait( 2e-3 );
tomoya123 0:8d235efb1150 116 curs[ 0 ] = 0;
tomoya123 0:8d235efb1150 117 curs[ 1 ] = 0;
tomoya123 0:8d235efb1150 118 }
tomoya123 0:8d235efb1150 119
tomoya123 0:8d235efb1150 120 void initilize(){
tomoya123 0:8d235efb1150 121 char *init_massage = " ";
tomoya123 0:8d235efb1150 122 for ( int i = 0; i < init_seq0_length; i++ ) {
tomoya123 0:8d235efb1150 123 lcd_command( init_seq0[ i ] );
tomoya123 0:8d235efb1150 124 wait( 30e-6 );
tomoya123 0:8d235efb1150 125 }
tomoya123 0:8d235efb1150 126
tomoya123 0:8d235efb1150 127 wait( 0.2 );
tomoya123 0:8d235efb1150 128
tomoya123 0:8d235efb1150 129 for ( int i = 0; i < init_seq1_length; i++ ) {
tomoya123 0:8d235efb1150 130 lcd_command( init_seq1[ i ] );
tomoya123 0:8d235efb1150 131 wait( 2e-3 );
tomoya123 0:8d235efb1150 132 }
tomoya123 0:8d235efb1150 133
tomoya123 0:8d235efb1150 134 if ( init_massage )
tomoya123 0:8d235efb1150 135 puts( 0, init_massage );
tomoya123 0:8d235efb1150 136
tomoya123 0:8d235efb1150 137 set_CGRAM( 7, '\x1F' );
tomoya123 0:8d235efb1150 138
tomoya123 0:8d235efb1150 139 curs[ 0 ] = 0;
tomoya123 0:8d235efb1150 140 curs[ 1 ] = 0;
tomoya123 0:8d235efb1150 141 }
tomoya123 0:8d235efb1150 142 void put_custom_char( char c_code, const char *cg, char x, char y ) {
tomoya123 0:8d235efb1150 143 for ( int i = 0; i < 5; i++ ) {
tomoya123 0:8d235efb1150 144 set_CGRAM( c_code, cg );
tomoya123 0:8d235efb1150 145 putcxy( c_code, x, y );
tomoya123 0:8d235efb1150 146 }
tomoya123 0:8d235efb1150 147 }
tomoya123 0:8d235efb1150 148
tomoya123 0:8d235efb1150 149 void contrast( char contrast ) {
tomoya123 0:8d235efb1150 150 lcd_command( Comm_FunctionSet_Extended );
tomoya123 0:8d235efb1150 151 lcd_command( Comm_ContrastSet | (contrast & 0x0f) );
tomoya123 0:8d235efb1150 152 lcd_command( Comm_PwrIconContrast | ((contrast>>4) & 0x03) );
tomoya123 0:8d235efb1150 153 lcd_command( Comm_FunctionSet_Normal );
tomoya123 0:8d235efb1150 154 }
tomoya123 0:8d235efb1150 155
tomoya123 0:8d235efb1150 156 void set_CGRAM( char char_code, const char* cg ) {
tomoya123 0:8d235efb1150 157 for ( int i = 0; i < 8; i++ ) {
tomoya123 0:8d235efb1150 158 lcd_command( (Comm_SetCGRAM | (char_code << 3) | i) );
tomoya123 0:8d235efb1150 159 lcd_data( *cg++ );
tomoya123 0:8d235efb1150 160 }
tomoya123 0:8d235efb1150 161 }
tomoya123 0:8d235efb1150 162
tomoya123 0:8d235efb1150 163 void set_CGRAM( char char_code, char v ) {
tomoya123 0:8d235efb1150 164 char c[ 8 ];
tomoya123 0:8d235efb1150 165
tomoya123 0:8d235efb1150 166 for ( int i = 0; i < 8; i++ )
tomoya123 0:8d235efb1150 167 c[ i ] = v;
tomoya123 0:8d235efb1150 168
tomoya123 0:8d235efb1150 169 set_CGRAM( char_code, c );
tomoya123 0:8d235efb1150 170 }
tomoya123 0:8d235efb1150 171
tomoya123 0:8d235efb1150 172 void putcxy( char c, char x, char y ) {
tomoya123 0:8d235efb1150 173 if ( (x >= MaxCharsInALine) || (y >= 2) )
tomoya123 0:8d235efb1150 174 return;
tomoya123 0:8d235efb1150 175
tomoya123 0:8d235efb1150 176 lcd_command( (Comm_SetDDRAMAddress | DDRAMAddress_Ofst[ y ]) + x );
tomoya123 0:8d235efb1150 177 lcd_data( c );
tomoya123 0:8d235efb1150 178 }
tomoya123 0:8d235efb1150 179
tomoya123 0:8d235efb1150 180 void putc( char line, char c ) {
tomoya123 0:8d235efb1150 181 if ( (c == '\n') || (c == '\r') ) {
tomoya123 0:8d235efb1150 182 clear_lest_of_line( line );
tomoya123 0:8d235efb1150 183 curs[ line ] = 0;
tomoya123 0:8d235efb1150 184 return;
tomoya123 0:8d235efb1150 185 }
tomoya123 0:8d235efb1150 186
tomoya123 0:8d235efb1150 187 putcxy( c, curs[ line ]++, line );
tomoya123 0:8d235efb1150 188 }
tomoya123 0:8d235efb1150 189
tomoya123 0:8d235efb1150 190 void puts( char line, char *s ) {
tomoya123 0:8d235efb1150 191 while ( char c = *s++ )
tomoya123 0:8d235efb1150 192 putc( line, c );
tomoya123 0:8d235efb1150 193 }
tomoya123 0:8d235efb1150 194
tomoya123 0:8d235efb1150 195 void printf( char line, char *format, ... ) {
tomoya123 0:8d235efb1150 196 char s[ 32 ];
tomoya123 0:8d235efb1150 197 va_list args;
tomoya123 0:8d235efb1150 198
tomoya123 0:8d235efb1150 199 va_start( args, format );
tomoya123 0:8d235efb1150 200 vsnprintf( s, 32, format, args );
tomoya123 0:8d235efb1150 201 va_end( args );
tomoya123 0:8d235efb1150 202
tomoya123 0:8d235efb1150 203 puts( line, s );
tomoya123 0:8d235efb1150 204 }
tomoya123 0:8d235efb1150 205
tomoya123 0:8d235efb1150 206 private:
tomoya123 0:8d235efb1150 207 char curs[2];
tomoya123 0:8d235efb1150 208
tomoya123 0:8d235efb1150 209 void clear_lest_of_line( char line ) {
tomoya123 0:8d235efb1150 210 for ( int i = curs[ line ]; i < MaxCharsInALine; i++ )
tomoya123 0:8d235efb1150 211 putcxy( ' ', i, line );
tomoya123 0:8d235efb1150 212 }
tomoya123 0:8d235efb1150 213
tomoya123 0:8d235efb1150 214 int lcd_write( char first, char second ) {
tomoya123 0:8d235efb1150 215 char cmd[2];
tomoya123 0:8d235efb1150 216
tomoya123 0:8d235efb1150 217 cmd[ 0 ] = first;
tomoya123 0:8d235efb1150 218 cmd[ 1 ] = second;
tomoya123 0:8d235efb1150 219
tomoya123 0:8d235efb1150 220 return ( write( cmd, 2 ) );
tomoya123 0:8d235efb1150 221
tomoya123 0:8d235efb1150 222 }
tomoya123 0:8d235efb1150 223
tomoya123 0:8d235efb1150 224 int lcd_command( char command ) {
tomoya123 0:8d235efb1150 225 return ( lcd_write( COMMAND, command ) );
tomoya123 0:8d235efb1150 226 }
tomoya123 0:8d235efb1150 227
tomoya123 0:8d235efb1150 228 int lcd_data( char data ) {
tomoya123 0:8d235efb1150 229 return ( lcd_write( DATA, data ) );
tomoya123 0:8d235efb1150 230 }
tomoya123 0:8d235efb1150 231 }
tomoya123 0:8d235efb1150 232 ;
tomoya123 0:8d235efb1150 233
tomoya123 0:8d235efb1150 234 #endif
tomoya123 0:8d235efb1150 235
tomoya123 0:8d235efb1150 236
tomoya123 0:8d235efb1150 237
tomoya123 0:8d235efb1150 238
tomoya123 0:8d235efb1150 239
tomoya123 0:8d235efb1150 240
tomoya123 0:8d235efb1150 241
tomoya123 0:8d235efb1150 242