Yoshiyuki Uehara / Mbed 2 deprecated Maple

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Dependencies:   mbed

Maple_LCD.cpp@0:0be38b583cf7, 2011-09-25 (annotated)

Committer:
uehara00
Date:
Sun Sep 25 11:37:21 2011 +0000
Revision:
0:0be38b583cf7
Child:
1:aefa1992ce0f
Preliminary. Alarm functions are not yet implimented.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
uehara00 0:0be38b583cf7 1 // MAPLE board[MARM01-BASE]
uehara00 0:0be38b583cf7 2 // LCD(TC1602E-25A) driver
uehara00 0:0be38b583cf7 3 // - 4-bit I/O port.
uehara00 0:0be38b583cf7 4 // - "r/w" is fixed to "w". Read instructions do not work.
uehara00 0:0be38b583cf7 5 //
uehara00 0:0be38b583cf7 6 #include "Maple_LCD.h"
uehara00 0:0be38b583cf7 7 #include "Maple.h"
uehara00 0:0be38b583cf7 8 #include "mbed.h"
uehara00 0:0be38b583cf7 9
uehara00 0:0be38b583cf7 10 // LCD interface
uehara00 0:0be38b583cf7 11 DigitalOut LCD_rs(p25);
uehara00 0:0be38b583cf7 12 DigitalOut LCD_e(p24);
uehara00 0:0be38b583cf7 13 BusInOut LCD_d4_d7(p12, p13, p14, p23);
uehara00 0:0be38b583cf7 14 int LCD_rw; // dummy .. fixed to 0 on MAPLE Board
uehara00 0:0be38b583cf7 15
uehara00 0:0be38b583cf7 16 // functions for timing
uehara00 0:0be38b583cf7 17 static void LCD_bus_switch_time() {
uehara00 0:0be38b583cf7 18 __nop();
uehara00 0:0be38b583cf7 19 }
uehara00 0:0be38b583cf7 20
uehara00 0:0be38b583cf7 21 static void LCD_data_hold_time() {
uehara00 0:0be38b583cf7 22 __nop();
uehara00 0:0be38b583cf7 23 }
uehara00 0:0be38b583cf7 24
uehara00 0:0be38b583cf7 25 static void LCD_data_setup_time() {
uehara00 0:0be38b583cf7 26 wait_us(1);
uehara00 0:0be38b583cf7 27 }
uehara00 0:0be38b583cf7 28
uehara00 0:0be38b583cf7 29 static void LCD_execution_time() {
uehara00 0:0be38b583cf7 30 wait_us(60);
uehara00 0:0be38b583cf7 31 }
uehara00 0:0be38b583cf7 32
uehara00 0:0be38b583cf7 33 static void LCD_clear_time() {
uehara00 0:0be38b583cf7 34 wait_us(2500);
uehara00 0:0be38b583cf7 35 }
uehara00 0:0be38b583cf7 36
uehara00 0:0be38b583cf7 37 // rw 1 1 0 0 0 0 0 0 0 1 1 1 1 1
uehara00 0:0be38b583cf7 38 // data - - - H H H H H - - - - - -
uehara00 0:0be38b583cf7 39 // e 0 0 0 1 1 1 1 0 0 0 0 0 0 0
uehara00 0:0be38b583cf7 40 // --1us-- ---60us---
uehara00 0:0be38b583cf7 41 static void LCD_write_1(int rs, char w) {
uehara00 0:0be38b583cf7 42 LCD_rs = rs;
uehara00 0:0be38b583cf7 43 LCD_rw = 0;
uehara00 0:0be38b583cf7 44 LCD_bus_switch_time();
uehara00 0:0be38b583cf7 45 LCD_d4_d7.output();
uehara00 0:0be38b583cf7 46
uehara00 0:0be38b583cf7 47 LCD_e = 1;
uehara00 0:0be38b583cf7 48 LCD_d4_d7 = w >> 4;
uehara00 0:0be38b583cf7 49 LCD_data_setup_time();
uehara00 0:0be38b583cf7 50 LCD_e = 0;
uehara00 0:0be38b583cf7 51
uehara00 0:0be38b583cf7 52 LCD_d4_d7.input();
uehara00 0:0be38b583cf7 53 LCD_bus_switch_time();
uehara00 0:0be38b583cf7 54 LCD_rw = 1;
uehara00 0:0be38b583cf7 55
uehara00 0:0be38b583cf7 56 LCD_execution_time();
uehara00 0:0be38b583cf7 57 }
uehara00 0:0be38b583cf7 58
uehara00 0:0be38b583cf7 59 // rw 1 1 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1
uehara00 0:0be38b583cf7 60 // data - - - H H H H H L L L L L - - - - - -
uehara00 0:0be38b583cf7 61 // e 0 0 0 1 1 1 1 0 1 1 1 1 0 0 0 0 0 0 0
uehara00 0:0be38b583cf7 62 // --1us-- --1us-- ---60us---
uehara00 0:0be38b583cf7 63 static void LCD_write_2(int rs, char w) {
uehara00 0:0be38b583cf7 64 LCD_rs = rs;
uehara00 0:0be38b583cf7 65 LCD_rw = 0;
uehara00 0:0be38b583cf7 66 LCD_bus_switch_time();
uehara00 0:0be38b583cf7 67 LCD_d4_d7.output();
uehara00 0:0be38b583cf7 68
uehara00 0:0be38b583cf7 69 LCD_e = 1;
uehara00 0:0be38b583cf7 70 LCD_d4_d7 = w >> 4;
uehara00 0:0be38b583cf7 71 LCD_data_setup_time();
uehara00 0:0be38b583cf7 72 LCD_e = 0;
uehara00 0:0be38b583cf7 73 LCD_data_hold_time();
uehara00 0:0be38b583cf7 74
uehara00 0:0be38b583cf7 75 LCD_e = 1;
uehara00 0:0be38b583cf7 76 LCD_d4_d7 = w;
uehara00 0:0be38b583cf7 77 LCD_data_setup_time();
uehara00 0:0be38b583cf7 78 LCD_e = 0;
uehara00 0:0be38b583cf7 79
uehara00 0:0be38b583cf7 80 LCD_d4_d7.input();
uehara00 0:0be38b583cf7 81 LCD_bus_switch_time();
uehara00 0:0be38b583cf7 82 LCD_rw = 1;
uehara00 0:0be38b583cf7 83
uehara00 0:0be38b583cf7 84 LCD_execution_time();
uehara00 0:0be38b583cf7 85 }
uehara00 0:0be38b583cf7 86
uehara00 0:0be38b583cf7 87 // rw 1 1 1 1 1 1 1 1 1 1 1 1 1
uehara00 0:0be38b583cf7 88 // data - - - H H H H - L L L L -
uehara00 0:0be38b583cf7 89 // e 0 0 1 1 1 1 0 1 1 1 1 0 0
uehara00 0:0be38b583cf7 90 // setup setup
uehara00 0:0be38b583cf7 91 static unsigned char LCD_read_2(int rs) {
uehara00 0:0be38b583cf7 92 char r;
uehara00 0:0be38b583cf7 93
uehara00 0:0be38b583cf7 94 LCD_rs = rs;
uehara00 0:0be38b583cf7 95 LCD_e = 1;
uehara00 0:0be38b583cf7 96 LCD_data_setup_time();
uehara00 0:0be38b583cf7 97 r = LCD_d4_d7 << 4;
uehara00 0:0be38b583cf7 98 LCD_e = 0;
uehara00 0:0be38b583cf7 99 LCD_data_hold_time();
uehara00 0:0be38b583cf7 100
uehara00 0:0be38b583cf7 101 LCD_e = 1;
uehara00 0:0be38b583cf7 102 LCD_data_setup_time();
uehara00 0:0be38b583cf7 103 r += LCD_d4_d7;
uehara00 0:0be38b583cf7 104 LCD_e = 0;
uehara00 0:0be38b583cf7 105 LCD_data_hold_time();
uehara00 0:0be38b583cf7 106
uehara00 0:0be38b583cf7 107 return r;
uehara00 0:0be38b583cf7 108 }
uehara00 0:0be38b583cf7 109
uehara00 0:0be38b583cf7 110 // rs rw: d7 d6 d5 d4 d3 d2 d1 d0
uehara00 0:0be38b583cf7 111 // 0 0 : 0 0 0 0 0 0 0 1 :0x01
uehara00 0:0be38b583cf7 112 void LCD_clear_display() {
uehara00 0:0be38b583cf7 113 LCD_write_2(0, 0x01);
uehara00 0:0be38b583cf7 114 LCD_clear_time();
uehara00 0:0be38b583cf7 115 }
uehara00 0:0be38b583cf7 116
uehara00 0:0be38b583cf7 117 // rs rw: d7 d6 d5 d4 d3 d2 d1 d0
uehara00 0:0be38b583cf7 118 // 0 0 : 0 0 0 0 0 0 1 - :0x02
uehara00 0:0be38b583cf7 119 void LCD_return_home() {
uehara00 0:0be38b583cf7 120 LCD_write_2(0, 0x02);
uehara00 0:0be38b583cf7 121 LCD_clear_time();
uehara00 0:0be38b583cf7 122 }
uehara00 0:0be38b583cf7 123
uehara00 0:0be38b583cf7 124 // rs rw: d7 d6 d5 d4 d3 d2 d1 d0
uehara00 0:0be38b583cf7 125 // 0 0 : 0 0 0 0 0 1 id s :0x04
uehara00 0:0be38b583cf7 126 // id: curdor move direction.. 0: decrement, 1: increment
uehara00 0:0be38b583cf7 127 // s: accompanies display shift.. 0: no, 1: yes
uehara00 0:0be38b583cf7 128 void LCD_entry_mode_set(int id, int s) {
uehara00 0:0be38b583cf7 129 char w;
uehara00 0:0be38b583cf7 130
uehara00 0:0be38b583cf7 131 w = 0x04;
uehara00 0:0be38b583cf7 132 if(id != 0){ w += 0x02; }
uehara00 0:0be38b583cf7 133 if(s != 0){ w += 0x01; }
uehara00 0:0be38b583cf7 134 LCD_write_2(0, w);
uehara00 0:0be38b583cf7 135 }
uehara00 0:0be38b583cf7 136
uehara00 0:0be38b583cf7 137 // rs rw: d7 d6 d5 d4 d3 d2 d1 d0
uehara00 0:0be38b583cf7 138 // 0 0 : 0 0 0 0 1 d c b :0x08
uehara00 0:0be38b583cf7 139 // d: display.. 0: off, 1: on
uehara00 0:0be38b583cf7 140 // c: cursor.. 0: off, 1: on
uehara00 0:0be38b583cf7 141 // b: blinking.. 0: off, 1: on
uehara00 0:0be38b583cf7 142 void LCD_display_on_off_control(int d, int c, int b) {
uehara00 0:0be38b583cf7 143 char w;
uehara00 0:0be38b583cf7 144
uehara00 0:0be38b583cf7 145 w = 0x08;
uehara00 0:0be38b583cf7 146 if(d != 0){ w += 0x04; }
uehara00 0:0be38b583cf7 147 if(c != 0){ w += 0x02; }
uehara00 0:0be38b583cf7 148 if(b != 0){ w += 0x01; }
uehara00 0:0be38b583cf7 149 LCD_write_2(0, w);
uehara00 0:0be38b583cf7 150 }
uehara00 0:0be38b583cf7 151
uehara00 0:0be38b583cf7 152 // rs rw: d7 d6 d5 d4 d3 d2 d1 d0
uehara00 0:0be38b583cf7 153 // 0 0 : 0 0 0 1 sc rl - - :0x10
uehara00 0:0be38b583cf7 154 // sc: shift/cursor.. 0: cursor move, 1: display shift
uehara00 0:0be38b583cf7 155 // rl: right/left.. 0: shift to the left, 1: shift to the right
uehara00 0:0be38b583cf7 156 void LCD_cursor_or_display_shift(int sc, int rl) {
uehara00 0:0be38b583cf7 157 char w;
uehara00 0:0be38b583cf7 158
uehara00 0:0be38b583cf7 159 w = 0x10;
uehara00 0:0be38b583cf7 160 if(sc != 0){ w += 0x08; }
uehara00 0:0be38b583cf7 161 if(rl != 0){ w += 0x04; }
uehara00 0:0be38b583cf7 162 LCD_write_2(0, w);
uehara00 0:0be38b583cf7 163 }
uehara00 0:0be38b583cf7 164
uehara00 0:0be38b583cf7 165 // rs rw: d7 d6 d5 d4 d3 d2 d1 d0
uehara00 0:0be38b583cf7 166 // 0 0 : 0 0 1 dl n f - - :0x20
uehara00 0:0be38b583cf7 167 //
uehara00 0:0be38b583cf7 168 // "function set" is used twice at initialization only
uehara00 0:0be38b583cf7 169 // 1st use: 8 bit write
uehara00 0:0be38b583cf7 170 // dl: data length.. 0: 4 bits, 1: 8 bits --> 0 fixed
uehara00 0:0be38b583cf7 171 //
uehara00 0:0be38b583cf7 172 // 2nd use: 4 bit write
uehara00 0:0be38b583cf7 173 // dl = 0 (must not change)
uehara00 0:0be38b583cf7 174 // n: line select.. 0: 1 line, 1: 2 lines
uehara00 0:0be38b583cf7 175 // f: font select.. 0: 5*8 dots, 1: 5*10 dots
uehara00 0:0be38b583cf7 176 void LCD_function_set(int n, int f) {
uehara00 0:0be38b583cf7 177 char w;
uehara00 0:0be38b583cf7 178
uehara00 0:0be38b583cf7 179 w = 0x20;
uehara00 0:0be38b583cf7 180 if(n != 0){ w += 0x08; }
uehara00 0:0be38b583cf7 181 if(f != 0){ w += 0x04; }
uehara00 0:0be38b583cf7 182 LCD_write_1(0, w);
uehara00 0:0be38b583cf7 183 LCD_write_2(0, w);
uehara00 0:0be38b583cf7 184 }
uehara00 0:0be38b583cf7 185
uehara00 0:0be38b583cf7 186 // rs rw: d7 d6 d5 d4 d3 d2 d1 d0
uehara00 0:0be38b583cf7 187 // 0 0 : 0 1 a5 a4 a3 a2 a1 a0:0x40
uehara00 0:0be38b583cf7 188 // a5-a0: CGRAM address
uehara00 0:0be38b583cf7 189 void LCD_set_CGRAM_address(int a) {
uehara00 0:0be38b583cf7 190 LCD_write_2(0, 0x40 + (a & 0x3f));
uehara00 0:0be38b583cf7 191 }
uehara00 0:0be38b583cf7 192
uehara00 0:0be38b583cf7 193 // rs rw: d7 d6 d5 d4 d3 d2 d1 d0
uehara00 0:0be38b583cf7 194 // 0 0 : 1 a6 a5 a4 a3 a2 a1 a0:0x80
uehara00 0:0be38b583cf7 195 // a6-a0: DDRAM address
uehara00 0:0be38b583cf7 196 void LCD_set_DDRAM_address(int a) {
uehara00 0:0be38b583cf7 197 LCD_write_2(0, 0x80 + (a & 0x7f));
uehara00 0:0be38b583cf7 198 }
uehara00 0:0be38b583cf7 199
uehara00 0:0be38b583cf7 200 // rs rw: d7 d6 d5 d4 d3 d2 d1 d0
uehara00 0:0be38b583cf7 201 // 0 1 : bf a6 a5 a4 a3 a2 a1 a0
uehara00 0:0be38b583cf7 202 // bf: busy flag- 0: not busy, 1: busy
uehara00 0:0be38b583cf7 203 // a6-a0: DDRAM address
uehara00 0:0be38b583cf7 204 char LCD_read_busy_flag_and_address() {
uehara00 0:0be38b583cf7 205 return LCD_read_2(0);
uehara00 0:0be38b583cf7 206 }
uehara00 0:0be38b583cf7 207
uehara00 0:0be38b583cf7 208 // rs rw: d7 d6 d5 d4 d3 d2 d1 d0
uehara00 0:0be38b583cf7 209 // 1 0 : d7 d6 d5 d4 d3 d2 d1 d0
uehara00 0:0be38b583cf7 210 // d7-d0: DDRAM address
uehara00 0:0be38b583cf7 211 void LCD_write_data_to_CG_or_DDRAM(char d) {
uehara00 0:0be38b583cf7 212 LCD_write_2(1, d);
uehara00 0:0be38b583cf7 213 }
uehara00 0:0be38b583cf7 214
uehara00 0:0be38b583cf7 215 // rs rw: d7 d6 d5 d4 d3 d2 d1 d0
uehara00 0:0be38b583cf7 216 // 1 1 : d7 d6 d5 d4 d3 d2 d1 d0
uehara00 0:0be38b583cf7 217 // d7-d0: read data from CGRAM or DDRAM
uehara00 0:0be38b583cf7 218 char LCD_read_data_from_CG_or_DDRAM() {
uehara00 0:0be38b583cf7 219 return LCD_read_2(1);
uehara00 0:0be38b583cf7 220 }
uehara00 0:0be38b583cf7 221
uehara00 0:0be38b583cf7 222 // an example of CGRAM customizing
uehara00 0:0be38b583cf7 223 void LCD_CGRAM_customize() {
uehara00 0:0be38b583cf7 224 LCD_set_CGRAM_address(0x00);
uehara00 0:0be38b583cf7 225 // 0x00
uehara00 0:0be38b583cf7 226 LCD_write_data_to_CG_or_DDRAM(0x15); // 1-1-1
uehara00 0:0be38b583cf7 227 LCD_write_data_to_CG_or_DDRAM(0x0a); // -1-1-
uehara00 0:0be38b583cf7 228 LCD_write_data_to_CG_or_DDRAM(0x15); // 1-1-1
uehara00 0:0be38b583cf7 229 LCD_write_data_to_CG_or_DDRAM(0x0a); // -1-1-
uehara00 0:0be38b583cf7 230 LCD_write_data_to_CG_or_DDRAM(0x15); // 1-1-1
uehara00 0:0be38b583cf7 231 LCD_write_data_to_CG_or_DDRAM(0x0a); // -1-1-
uehara00 0:0be38b583cf7 232 LCD_write_data_to_CG_or_DDRAM(0x15); // 1-1-1
uehara00 0:0be38b583cf7 233 LCD_write_data_to_CG_or_DDRAM(0x00); // -----
uehara00 0:0be38b583cf7 234 // 0x01
uehara00 0:0be38b583cf7 235 LCD_write_data_to_CG_or_DDRAM(0x0e); // -111-
uehara00 0:0be38b583cf7 236 LCD_write_data_to_CG_or_DDRAM(0x11); // 1---1
uehara00 0:0be38b583cf7 237 LCD_write_data_to_CG_or_DDRAM(0x11); // 1---1
uehara00 0:0be38b583cf7 238 LCD_write_data_to_CG_or_DDRAM(0x0e); // -111-
uehara00 0:0be38b583cf7 239 LCD_write_data_to_CG_or_DDRAM(0x04); // --1--
uehara00 0:0be38b583cf7 240 LCD_write_data_to_CG_or_DDRAM(0x1f); // 11111
uehara00 0:0be38b583cf7 241 LCD_write_data_to_CG_or_DDRAM(0x04); // --1--
uehara00 0:0be38b583cf7 242 LCD_write_data_to_CG_or_DDRAM(0x00); // -----
uehara00 0:0be38b583cf7 243 // 0x02
uehara00 0:0be38b583cf7 244 LCD_write_data_to_CG_or_DDRAM(0x04); // --1--
uehara00 0:0be38b583cf7 245 LCD_write_data_to_CG_or_DDRAM(0x0e); // -111-
uehara00 0:0be38b583cf7 246 LCD_write_data_to_CG_or_DDRAM(0x15); // 1-1-1
uehara00 0:0be38b583cf7 247 LCD_write_data_to_CG_or_DDRAM(0x04); // --1--
uehara00 0:0be38b583cf7 248 LCD_write_data_to_CG_or_DDRAM(0x0e); // -111-
uehara00 0:0be38b583cf7 249 LCD_write_data_to_CG_or_DDRAM(0x11); // 1---1
uehara00 0:0be38b583cf7 250 LCD_write_data_to_CG_or_DDRAM(0x0e); // -111-
uehara00 0:0be38b583cf7 251 LCD_write_data_to_CG_or_DDRAM(0x00); // -----
uehara00 0:0be38b583cf7 252 // 0x03
uehara00 0:0be38b583cf7 253 LCD_write_data_to_CG_or_DDRAM(0x00); // -----
uehara00 0:0be38b583cf7 254 LCD_write_data_to_CG_or_DDRAM(0x0a); // -1-1-
uehara00 0:0be38b583cf7 255 LCD_write_data_to_CG_or_DDRAM(0x15); // 1-1-1
uehara00 0:0be38b583cf7 256 LCD_write_data_to_CG_or_DDRAM(0x11); // 1---1
uehara00 0:0be38b583cf7 257 LCD_write_data_to_CG_or_DDRAM(0x0a); // -1-1-
uehara00 0:0be38b583cf7 258 LCD_write_data_to_CG_or_DDRAM(0x04); // --1--
uehara00 0:0be38b583cf7 259 LCD_write_data_to_CG_or_DDRAM(0x00); // -----
uehara00 0:0be38b583cf7 260 LCD_write_data_to_CG_or_DDRAM(0x00); // -----
uehara00 0:0be38b583cf7 261 // 0x04
uehara00 0:0be38b583cf7 262 LCD_write_data_to_CG_or_DDRAM(0x00); // -----
uehara00 0:0be38b583cf7 263 LCD_write_data_to_CG_or_DDRAM(0x04); // --1--
uehara00 0:0be38b583cf7 264 LCD_write_data_to_CG_or_DDRAM(0x0a); // -1-1-
uehara00 0:0be38b583cf7 265 LCD_write_data_to_CG_or_DDRAM(0x11); // 1---1
uehara00 0:0be38b583cf7 266 LCD_write_data_to_CG_or_DDRAM(0x0a); // -1-1-
uehara00 0:0be38b583cf7 267 LCD_write_data_to_CG_or_DDRAM(0x04); // --1--
uehara00 0:0be38b583cf7 268 LCD_write_data_to_CG_or_DDRAM(0x00); // -----
uehara00 0:0be38b583cf7 269 LCD_write_data_to_CG_or_DDRAM(0x00); // -----
uehara00 0:0be38b583cf7 270 // 0x05
uehara00 0:0be38b583cf7 271 LCD_write_data_to_CG_or_DDRAM(0x00); // -----
uehara00 0:0be38b583cf7 272 LCD_write_data_to_CG_or_DDRAM(0x0e); // -111-
uehara00 0:0be38b583cf7 273 LCD_write_data_to_CG_or_DDRAM(0x15); // 1-1-1
uehara00 0:0be38b583cf7 274 LCD_write_data_to_CG_or_DDRAM(0x1f); // 11111
uehara00 0:0be38b583cf7 275 LCD_write_data_to_CG_or_DDRAM(0x15); // 1-1-1
uehara00 0:0be38b583cf7 276 LCD_write_data_to_CG_or_DDRAM(0x04); // --1--
uehara00 0:0be38b583cf7 277 LCD_write_data_to_CG_or_DDRAM(0x0e); // -111-
uehara00 0:0be38b583cf7 278 LCD_write_data_to_CG_or_DDRAM(0x00); // -----
uehara00 0:0be38b583cf7 279 // 0x06
uehara00 0:0be38b583cf7 280 LCD_write_data_to_CG_or_DDRAM(0x00); // -----
uehara00 0:0be38b583cf7 281 LCD_write_data_to_CG_or_DDRAM(0x04); // --1--
uehara00 0:0be38b583cf7 282 LCD_write_data_to_CG_or_DDRAM(0x0a); // -1-1-
uehara00 0:0be38b583cf7 283 LCD_write_data_to_CG_or_DDRAM(0x11); // 1---1
uehara00 0:0be38b583cf7 284 LCD_write_data_to_CG_or_DDRAM(0x1f); // 11111
uehara00 0:0be38b583cf7 285 LCD_write_data_to_CG_or_DDRAM(0x04); // --1--
uehara00 0:0be38b583cf7 286 LCD_write_data_to_CG_or_DDRAM(0x0e); // -111-
uehara00 0:0be38b583cf7 287 LCD_write_data_to_CG_or_DDRAM(0x00); // -----
uehara00 0:0be38b583cf7 288 // 0x07
uehara00 0:0be38b583cf7 289 LCD_write_data_to_CG_or_DDRAM(0x04); // --1--
uehara00 0:0be38b583cf7 290 LCD_write_data_to_CG_or_DDRAM(0x06); // --11-
uehara00 0:0be38b583cf7 291 LCD_write_data_to_CG_or_DDRAM(0x05); // --1-1
uehara00 0:0be38b583cf7 292 LCD_write_data_to_CG_or_DDRAM(0x05); // --1-1
uehara00 0:0be38b583cf7 293 LCD_write_data_to_CG_or_DDRAM(0x0d); // -11-1
uehara00 0:0be38b583cf7 294 LCD_write_data_to_CG_or_DDRAM(0x1c); // 111--
uehara00 0:0be38b583cf7 295 LCD_write_data_to_CG_or_DDRAM(0x18); // 11---
uehara00 0:0be38b583cf7 296 LCD_write_data_to_CG_or_DDRAM(0x00); // -----
uehara00 0:0be38b583cf7 297 }
uehara00 0:0be38b583cf7 298
uehara00 0:0be38b583cf7 299 // an example of initializing LCD module .. standard use
uehara00 0:0be38b583cf7 300 void LCD_initialize() {
uehara00 0:0be38b583cf7 301 LCD_function_set(1, 0); // 2 lines, 5*8dots font set
uehara00 0:0be38b583cf7 302 LCD_display_on_off_control(1, 0, 0); // display on, cursor on, blinking on
uehara00 0:0be38b583cf7 303 LCD_entry_mode_set(1, 0); // increment yes, shift no
uehara00 0:0be38b583cf7 304 LCD_CGRAM_customize(); // CGRAM customize by an example above
uehara00 0:0be38b583cf7 305 LCD_clear_display(); // select 1st row and clear display
uehara00 0:0be38b583cf7 306 }
uehara00 0:0be38b583cf7 307
uehara00 0:0be38b583cf7 308 // print char to LCD module
uehara00 0:0be38b583cf7 309 void LCD_print_char(char c) {
uehara00 0:0be38b583cf7 310 LCD_write_data_to_CG_or_DDRAM(c);
uehara00 0:0be38b583cf7 311 }
uehara00 0:0be38b583cf7 312
uehara00 0:0be38b583cf7 313 // print string to LCD module
uehara00 0:0be38b583cf7 314 void LCD_print_string(char s[]) {
uehara00 0:0be38b583cf7 315 for(int i = 0; s[i] != '\0'; ++i) {
uehara00 0:0be38b583cf7 316 LCD_write_data_to_CG_or_DDRAM(s[i]);
uehara00 0:0be38b583cf7 317 }
uehara00 0:0be38b583cf7 318 }
uehara00 0:0be38b583cf7 319
uehara00 0:0be38b583cf7 320 // print char in hex format to LCD module
uehara00 0:0be38b583cf7 321 void LCD_print_hex(char c) {
uehara00 0:0be38b583cf7 322 LCD_write_data_to_CG_or_DDRAM(char_to_hex1(c >> 4));
uehara00 0:0be38b583cf7 323 LCD_write_data_to_CG_or_DDRAM(char_to_hex1(c & 0x0f));
uehara00 0:0be38b583cf7 324 }
uehara00 0:0be38b583cf7 325
uehara00 0:0be38b583cf7 326 // locate LCD module
uehara00 0:0be38b583cf7 327 // row = 0 .. 1
uehara00 0:0be38b583cf7 328 // column = 0 .. 0x3f
uehara00 0:0be38b583cf7 329 void LCD_locate(int row, int column) {
uehara00 0:0be38b583cf7 330 LCD_set_DDRAM_address(row * 0x40 + column);
uehara00 0:0be38b583cf7 331 }
uehara00 0:0be38b583cf7 332
uehara00 0:0be38b583cf7 333 // set cursor on/off
uehara00 0:0be38b583cf7 334 // c: cursor .. 0: off, 1: on
uehara00 0:0be38b583cf7 335 // blink = off
uehara00 0:0be38b583cf7 336 void LCD_cursor(int c) {
uehara00 0:0be38b583cf7 337 LCD_display_on_off_control(1, c, 0);
uehara00 0:0be38b583cf7 338 }