Wim Huiskamp / Mbed 2 deprecated TextLCD_HelloWorld2

Hello World demo for Enhanced TextLCD lib.

Dependencies:   TextLCD mbed

Dependents:   Opener-6

The Enhanced TextLCD lib supports more display types than the original lib. Added support for User Defined Characters (UDCs), Backlight control and other features such as control through I2C and SPI port expanders and controllers with native I2C and SPI interfaces. See here for more info.

main.cpp@0:a75049de1a82, 2014-06-13 (annotated)

Committer:
wim
Date:
Fri Jun 13 19:02:38 2014 +0000
Revision:
0:a75049de1a82
Child:
1:ef419b21167d
First test of native SPI

Who changed what in which revision?

UserRevisionLine numberNew contents of line
wim 0:a75049de1a82 1 // Hello World! for the TextLCD
wim 0:a75049de1a82 2
wim 0:a75049de1a82 3 #include "mbed.h"
wim 0:a75049de1a82 4 #include "TextLCD.h"
wim 0:a75049de1a82 5
wim 0:a75049de1a82 6 // Host PC Communication channels
wim 0:a75049de1a82 7 Serial pc(USBTX, USBRX); // tx, rx
wim 0:a75049de1a82 8
wim 0:a75049de1a82 9 void show_menu() {
wim 0:a75049de1a82 10 pc.printf("0: Exit\n\r");
wim 0:a75049de1a82 11 pc.printf("1: Show Menu\n\r");
wim 0:a75049de1a82 12 pc.printf("2: Goto 0,0\n\r");
wim 0:a75049de1a82 13 pc.printf("3: Goto columns(),rows()\n\r");
wim 0:a75049de1a82 14 pc.printf("4: cls()\n\r");
wim 0:a75049de1a82 15 pc.printf("5: UDCs \n\r");
wim 0:a75049de1a82 16 pc.printf("6: Fill\n\r");
wim 0:a75049de1a82 17 pc.printf("7: Cursor On\n\r");
wim 0:a75049de1a82 18 pc.printf("8: Cursor Off\n\r");
wim 0:a75049de1a82 19 pc.printf("9: Text\n\r");
wim 0:a75049de1a82 20 pc.printf("A: Display On\n\r");
wim 0:a75049de1a82 21 pc.printf("B: Display Off\n\r");
wim 0:a75049de1a82 22 pc.printf("C: Backlight On\n\r");
wim 0:a75049de1a82 23 pc.printf("D: Backlight Off\n\r");
wim 0:a75049de1a82 24 pc.printf("P: \n\r");
wim 0:a75049de1a82 25 pc.printf("\n\r");
wim 0:a75049de1a82 26 }
wim 0:a75049de1a82 27
wim 0:a75049de1a82 28
wim 0:a75049de1a82 29 // I2C Communication
wim 0:a75049de1a82 30 I2C i2c_lcd(p28,p27); // SDA, SCL
wim 0:a75049de1a82 31 //I2C i2c_lcd(p9,p10); // SDA, SCL
wim 0:a75049de1a82 32
wim 0:a75049de1a82 33 // SPI Communication
wim 0:a75049de1a82 34 SPI spi_lcd(p5, NC, p7); // MOSI, MISO, SCLK
wim 0:a75049de1a82 35 //DigitalOut cs(p8);
wim 0:a75049de1a82 36 //DigitalOut cs2(p9);
wim 0:a75049de1a82 37
wim 0:a75049de1a82 38 //TextLCD lcd2(p15, p16, p17, p18, p19, p20, TextLCD::LCD16x4); // rs, e, d4-d7 =ok
wim 0:a75049de1a82 39 //TextLCD lcd(p15, p16, p17, p18, p19, p20, TextLCD::LCD20x2); // rs, e, d4-d7 =ok
wim 0:a75049de1a82 40 //TextLCD lcd(p15, p16, p17, p18, p19, p20, TextLCD::LCD20x4); // rs, e, d4-d7 =ok
wim 0:a75049de1a82 41 //TextLCD lcd(p15, p16, p17, p18, p19, p20, TextLCD::LCD24x4); // rs, e, d4-d7 =ok
wim 0:a75049de1a82 42 //TextLCD lcd(p15, p16, p17, p18, p19, p20, TextLCD::LCD24x2); // rs, e, d4-d7 =ok
wim 0:a75049de1a82 43 //TextLCD lcd(p15, p16, p17, p18, p19, p20, TextLCD::LCD40x2); // rs, e, d4-d7 =ok
wim 0:a75049de1a82 44
wim 0:a75049de1a82 45 //TextLCD_I2C lcd(&i2c_lcd, 0x42, TextLCD::LCD20x4); // I2C bus, PCF8574 Slaveaddress, LCD Type =ok
wim 0:a75049de1a82 46 //TextLCD_I2C lcd(&i2c_lcd, 0x40, TextLCD::LCD20x4); // I2C bus, PCF8574 Slaveaddress, LCD Type =ok
wim 0:a75049de1a82 47
wim 0:a75049de1a82 48 //Test Adafruit module
wim 0:a75049de1a82 49 //TextLCD_I2C lcd(&i2c_lcd, MCP23008_SA0, TextLCD::LCD20x4); // I2C bus, MCP23008 Slaveaddress, LCD Type =OK
wim 0:a75049de1a82 50
wim 0:a75049de1a82 51 //TextLCD_I2C lcd(&i2c_lcd, 0x42, TextLCD::LCD16x2, TextLCD::WS0010); // I2C bus, PCF8574 Slaveaddress, LCD Type, LCD Ctrl
wim 0:a75049de1a82 52
wim 0:a75049de1a82 53 //TextLCD_SPI lcd(&spi_lcd, p8, TextLCD::LCD24x4); // SPI bus, CS pin, LCD Type =ok
wim 0:a75049de1a82 54 //TextLCD_SPI lcd(&spi_lcd, p8, TextLCD::LCD40x2); // SPI bus, CS pin, LCD Type =ok
wim 0:a75049de1a82 55 //TextLCD_SPI lcd(&spi_lcd, p8, TextLCD::LCD40x4); // SPI bus, CS pin, LCD Type =ok
wim 0:a75049de1a82 56
wim 0:a75049de1a82 57 //TextLCD_SPI lcd(&spi_lcd, p8, TextLCD::LCD40x4, TextLCD::HD44780); // SPI bus, CS pin, LCD Type, LCD Ctrl =ok
wim 0:a75049de1a82 58 //TextLCD_SPI lcd(&spi_lcd, p8, TextLCD::LCD40x4, TextLCD::WS0010); // SPI bus, CS pin, LCD Type, LCD Ctrl
wim 0:a75049de1a82 59
wim 0:a75049de1a82 60 //TextLCD_SPI lcd2(&spi_lcd, p9, TextLCD::LCD8x2B); // SPI bus, CS pin, LCD Type =ok
wim 0:a75049de1a82 61 //TextLCD_SPI lcd2(&spi_lcd, p9, TextLCD::LCD16x1); // SPI bus, CS pin, LCD Type =ok
wim 0:a75049de1a82 62 //TextLCD_SPI lcd2(&spi_lcd, p9, TextLCD::LCD16x2); // SPI bus, CS pin, LCD Type (VFD) =ok
wim 0:a75049de1a82 63
wim 0:a75049de1a82 64
wim 0:a75049de1a82 65 TextLCD_SPI_N lcd(&spi_lcd, p8, p9, TextLCD::LCD16x2, NC, TextLCD::ST7032_3V3); // SPI bus, CS pin, RS pin, LCDType=LCD16x2, BL=NC, LCDTCtrl=ST7032
wim 0:a75049de1a82 66
wim 0:a75049de1a82 67 int main() {
wim 0:a75049de1a82 68 // int i=0;
wim 0:a75049de1a82 69 int count=0;
wim 0:a75049de1a82 70 bool running=true;
wim 0:a75049de1a82 71 char command;
wim 0:a75049de1a82 72
wim 0:a75049de1a82 73 pc.printf("LCD Test. Colums=%d, Rows=%d\n\r", lcd.columns(), lcd.rows());
wim 0:a75049de1a82 74
wim 0:a75049de1a82 75 //while (1) {
wim 0:a75049de1a82 76 for (int row=0; row<lcd.rows(); row++) {
wim 0:a75049de1a82 77 int col=0;
wim 0:a75049de1a82 78
wim 0:a75049de1a82 79 pc.printf("MemAddr(Col=%d, Row=%d)=0x%02X\n\r", col, row, lcd.getAddress(col, row));
wim 0:a75049de1a82 80 // lcd.putc('-');
wim 0:a75049de1a82 81 lcd.putc('0' + row);
wim 0:a75049de1a82 82
wim 0:a75049de1a82 83 for (col=1; col<lcd.columns()-1; col++) {
wim 0:a75049de1a82 84 lcd.putc('*');
wim 0:a75049de1a82 85 }
wim 0:a75049de1a82 86
wim 0:a75049de1a82 87 pc.printf("MemAddr(Col=%d, Row=%d)=0x%02X\n\r", col, row, lcd.getAddress(col, row));
wim 0:a75049de1a82 88 lcd.putc('+');
wim 0:a75049de1a82 89
wim 0:a75049de1a82 90 }
wim 0:a75049de1a82 91
wim 0:a75049de1a82 92 // wait_ms(500);
wim 0:a75049de1a82 93 // lcd.cls(); // Test timing
wim 0:a75049de1a82 94 //}
wim 0:a75049de1a82 95
wim 0:a75049de1a82 96
wim 0:a75049de1a82 97 lcd.setCursor(TextLCD::CurOff_BlkOn);
wim 0:a75049de1a82 98
wim 0:a75049de1a82 99 // lcd.setUDC(0, (char *) udc_AA);
wim 0:a75049de1a82 100 // lcd.putc(0);
wim 0:a75049de1a82 101
wim 0:a75049de1a82 102 // lcd.setUDC(1, (char *) udc_0E);
wim 0:a75049de1a82 103 // lcd.putc(1);
wim 0:a75049de1a82 104
wim 0:a75049de1a82 105 // lcd.setUDC(0, (char *) udc_0);
wim 0:a75049de1a82 106 // lcd.putc(0);
wim 0:a75049de1a82 107 // lcd.setUDC(1, (char *) udc_1);
wim 0:a75049de1a82 108 // lcd.putc(1);
wim 0:a75049de1a82 109 // lcd.setUDC(2, (char *) udc_2);
wim 0:a75049de1a82 110 // lcd.putc(2);
wim 0:a75049de1a82 111
wim 0:a75049de1a82 112 lcd.setUDC(0, (char *) udc_Bat_Hi);
wim 0:a75049de1a82 113 lcd.setUDC(1, (char *) udc_Bat_Ha);
wim 0:a75049de1a82 114 lcd.setUDC(2, (char *) udc_Bat_Lo);
wim 0:a75049de1a82 115 lcd.setUDC(3, (char *) udc_AC);
wim 0:a75049de1a82 116 lcd.setUDC(4, (char *) udc_4);
wim 0:a75049de1a82 117 lcd.setUDC(5, (char *) udc_5);
wim 0:a75049de1a82 118 lcd.setUDC(6, (char *) udc_6);
wim 0:a75049de1a82 119 lcd.setUDC(7, (char *) udc_7);
wim 0:a75049de1a82 120
wim 0:a75049de1a82 121 lcd.putc(0);
wim 0:a75049de1a82 122 lcd.putc(1);
wim 0:a75049de1a82 123 lcd.putc(2);
wim 0:a75049de1a82 124 lcd.putc(3);
wim 0:a75049de1a82 125 lcd.putc(4);
wim 0:a75049de1a82 126 lcd.putc(5);
wim 0:a75049de1a82 127 lcd.putc(6);
wim 0:a75049de1a82 128 lcd.putc(7);
wim 0:a75049de1a82 129
wim 0:a75049de1a82 130 #if(0)
wim 0:a75049de1a82 131 lcd2.setUDC(0, (char *) udc_Bat_Hi);
wim 0:a75049de1a82 132 lcd2.setUDC(1, (char *) udc_Bat_Ha);
wim 0:a75049de1a82 133 lcd2.setUDC(2, (char *) udc_Bat_Lo);
wim 0:a75049de1a82 134 lcd2.setUDC(3, (char *) udc_AC);
wim 0:a75049de1a82 135 lcd2.putc(0);
wim 0:a75049de1a82 136 lcd2.putc(1);
wim 0:a75049de1a82 137 lcd2.putc(2);
wim 0:a75049de1a82 138 lcd2.putc(3);
wim 0:a75049de1a82 139 #endif
wim 0:a75049de1a82 140
wim 0:a75049de1a82 141 #if(0)
wim 0:a75049de1a82 142 while (1) {
wim 0:a75049de1a82 143 lcd.locate(4, 2);
wim 0:a75049de1a82 144 lcd.printf("Count=%3d", i);
wim 0:a75049de1a82 145 i++;
wim 0:a75049de1a82 146 if (i==100) i=0;
wim 0:a75049de1a82 147
wim 0:a75049de1a82 148 wait(1);
wim 0:a75049de1a82 149 }
wim 0:a75049de1a82 150 #endif
wim 0:a75049de1a82 151
wim 0:a75049de1a82 152 pc.printf("Hello World!\n\r");
wim 0:a75049de1a82 153 show_menu();
wim 0:a75049de1a82 154
wim 0:a75049de1a82 155 while(running) {
wim 0:a75049de1a82 156
wim 0:a75049de1a82 157 count++;
wim 0:a75049de1a82 158
wim 0:a75049de1a82 159 if(pc.readable()) {
wim 0:a75049de1a82 160 command = pc.getc();
wim 0:a75049de1a82 161 pc.printf("command= %c \n\r", command);
wim 0:a75049de1a82 162
wim 0:a75049de1a82 163 switch (command) {
wim 0:a75049de1a82 164 case '0' :
wim 0:a75049de1a82 165 pc.printf("Done\n\r");
wim 0:a75049de1a82 166 running = false;
wim 0:a75049de1a82 167 break;
wim 0:a75049de1a82 168
wim 0:a75049de1a82 169 case '1' :
wim 0:a75049de1a82 170 show_menu();
wim 0:a75049de1a82 171 break;
wim 0:a75049de1a82 172
wim 0:a75049de1a82 173 case '2' :
wim 0:a75049de1a82 174 pc.printf("Goto 0,0\n\r");
wim 0:a75049de1a82 175 lcd.locate(0, 0);
wim 0:a75049de1a82 176 // lcd2.locate(0, 0);
wim 0:a75049de1a82 177 break;
wim 0:a75049de1a82 178
wim 0:a75049de1a82 179 case '3' :
wim 0:a75049de1a82 180 pc.printf("Goto Col,Row\n\r");
wim 0:a75049de1a82 181 lcd.locate( (lcd.columns() - 1), (lcd.rows() - 1));
wim 0:a75049de1a82 182 // lcd2.locate( (lcd.columns() - 1), (lcd.rows() - 1));
wim 0:a75049de1a82 183 break;
wim 0:a75049de1a82 184
wim 0:a75049de1a82 185 case '4' :
wim 0:a75049de1a82 186 pc.printf("cls()\n\r");
wim 0:a75049de1a82 187 lcd.cls();
wim 0:a75049de1a82 188 // lcd2.cls();
wim 0:a75049de1a82 189 break;
wim 0:a75049de1a82 190
wim 0:a75049de1a82 191 case '5' :
wim 0:a75049de1a82 192 pc.printf("UDCs\n\r");
wim 0:a75049de1a82 193 lcd.locate(2, 0);
wim 0:a75049de1a82 194 lcd.putc(0);
wim 0:a75049de1a82 195 lcd.putc(1);
wim 0:a75049de1a82 196 lcd.putc(2);
wim 0:a75049de1a82 197 lcd.putc(3);
wim 0:a75049de1a82 198 lcd.putc(4);
wim 0:a75049de1a82 199 lcd.putc(5);
wim 0:a75049de1a82 200 lcd.putc(6);
wim 0:a75049de1a82 201 lcd.putc(7);
wim 0:a75049de1a82 202
wim 0:a75049de1a82 203 lcd.locate(4, lcd.rows()-1);
wim 0:a75049de1a82 204 lcd.putc(0);
wim 0:a75049de1a82 205 lcd.putc(1);
wim 0:a75049de1a82 206 lcd.putc(2);
wim 0:a75049de1a82 207 lcd.putc(3);
wim 0:a75049de1a82 208
wim 0:a75049de1a82 209
wim 0:a75049de1a82 210 // lcd2.locate(4, lcd.rows()-1);
wim 0:a75049de1a82 211 // lcd2.putc(0);
wim 0:a75049de1a82 212 // lcd2.putc(1);
wim 0:a75049de1a82 213 // lcd2.putc(2);
wim 0:a75049de1a82 214 // lcd2.putc(3);
wim 0:a75049de1a82 215
wim 0:a75049de1a82 216 break;
wim 0:a75049de1a82 217 case '6' :
wim 0:a75049de1a82 218 pc.printf("Fill\n\r");
wim 0:a75049de1a82 219 lcd.locate(0, 0);
wim 0:a75049de1a82 220 for (int row=0; row<lcd.rows(); row++) {
wim 0:a75049de1a82 221 int col=0;
wim 0:a75049de1a82 222
wim 0:a75049de1a82 223 // pc.printf("MemAddr(Col=%d, Row=%d)=0x%02X\n\r", col, row, lcd.getAddress(col, row));
wim 0:a75049de1a82 224 // lcd.putc('-');
wim 0:a75049de1a82 225 lcd.putc('0' + row);
wim 0:a75049de1a82 226
wim 0:a75049de1a82 227 for (col=1; col<lcd.columns()-1; col++) {
wim 0:a75049de1a82 228 lcd.putc('*');
wim 0:a75049de1a82 229 }
wim 0:a75049de1a82 230
wim 0:a75049de1a82 231 // pc.printf("MemAddr(Col=%d, Row=%d)=0x%02X\n\r", col, row, lcd.getAddress(col, row));
wim 0:a75049de1a82 232 lcd.putc('+');
wim 0:a75049de1a82 233 }
wim 0:a75049de1a82 234
wim 0:a75049de1a82 235 break;
wim 0:a75049de1a82 236
wim 0:a75049de1a82 237 case '7' :
wim 0:a75049de1a82 238 pc.printf("Cursor 0n\n\r");
wim 0:a75049de1a82 239 lcd.setCursor(TextLCD::CurOff_BlkOn);
wim 0:a75049de1a82 240 // lcd2.setCursor(TextLCD::CurOff_BlkOn);
wim 0:a75049de1a82 241 break;
wim 0:a75049de1a82 242
wim 0:a75049de1a82 243 case '8' :
wim 0:a75049de1a82 244 pc.printf("Cursor 0ff\n\r");
wim 0:a75049de1a82 245 lcd.setCursor(TextLCD::CurOff_BlkOff);
wim 0:a75049de1a82 246 // lcd2.setCursor(TextLCD::CurOff_BlkOff);
wim 0:a75049de1a82 247 break;
wim 0:a75049de1a82 248
wim 0:a75049de1a82 249 case '9' :
wim 0:a75049de1a82 250 pc.printf("Text\n\r");
wim 0:a75049de1a82 251 lcd.printf("Hello mbed\n");
wim 0:a75049de1a82 252 // lcd2.printf("Hello mbed\n");
wim 0:a75049de1a82 253
wim 0:a75049de1a82 254 break;
wim 0:a75049de1a82 255
wim 0:a75049de1a82 256 case 'A' :
wim 0:a75049de1a82 257 pc.printf("Display On\n\r");
wim 0:a75049de1a82 258 lcd.setMode(TextLCD::DispOn);
wim 0:a75049de1a82 259 // lcd2.setMode(TextLCD::DispOn);
wim 0:a75049de1a82 260 break;
wim 0:a75049de1a82 261
wim 0:a75049de1a82 262 case 'B' :
wim 0:a75049de1a82 263 pc.printf("Display Off\n\r");
wim 0:a75049de1a82 264 lcd.setMode(TextLCD::DispOff);
wim 0:a75049de1a82 265 // lcd2.setMode(TextLCD::DispOff);
wim 0:a75049de1a82 266 break;
wim 0:a75049de1a82 267
wim 0:a75049de1a82 268 case 'C' :
wim 0:a75049de1a82 269 pc.printf("Backlight On\n\r");
wim 0:a75049de1a82 270 lcd.setBacklight(TextLCD::LightOn);
wim 0:a75049de1a82 271 // lcd2.setBacklight(TextLCD::LightOn);
wim 0:a75049de1a82 272 break;
wim 0:a75049de1a82 273
wim 0:a75049de1a82 274 case 'D' :
wim 0:a75049de1a82 275 pc.printf("Backlight Off\n\r");
wim 0:a75049de1a82 276 lcd.setBacklight(TextLCD::LightOff);
wim 0:a75049de1a82 277 // lcd2.setBacklight(TextLCD::LightOff);
wim 0:a75049de1a82 278 break;
wim 0:a75049de1a82 279
wim 0:a75049de1a82 280
wim 0:a75049de1a82 281 // case 'E' :
wim 0:a75049de1a82 282 // pc.printf("Test nibble\n\r");
wim 0:a75049de1a82 283 // for (int i=0; i<16; i++) {
wim 0:a75049de1a82 284 // lcd._writeNibble(i);
wim 0:a75049de1a82 285 // wait(1);
wim 0:a75049de1a82 286 // }
wim 0:a75049de1a82 287 // break;
wim 0:a75049de1a82 288
wim 0:a75049de1a82 289
wim 0:a75049de1a82 290
wim 0:a75049de1a82 291 default :
wim 0:a75049de1a82 292 lcd.putc(command);
wim 0:a75049de1a82 293 // lcd2.putc(command);
wim 0:a75049de1a82 294 break;
wim 0:a75049de1a82 295
wim 0:a75049de1a82 296 } //switch
wim 0:a75049de1a82 297 }//if
wim 0:a75049de1a82 298 }//while
wim 0:a75049de1a82 299
wim 0:a75049de1a82 300 pc.printf("Bye World!\n\r");
wim 0:a75049de1a82 301 }