163 lines
4.2 KiB
C++
Executable File
163 lines
4.2 KiB
C++
Executable File
int DI = 12;
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int RW = 11;
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int DB[] = {3, 4, 5, 6, 7, 8, 9, 10};// use array to select pin for bus
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int Enable = 2;
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void LcdCommandWrite(int value) {
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// define all pins
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int i = 0;
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for (i=DB[0]; i <= DI; i++) // assign value for bus
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{
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digitalWrite(i,value & 01);// for 1602 LCD, it uses D7-D0( not D0-D7) for signal identification; here, it’s used for signal inversion.
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value >>= 1;
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}
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digitalWrite(Enable,LOW);
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delayMicroseconds(1);
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digitalWrite(Enable,HIGH);
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delayMicroseconds(1); // wait for 1ms
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digitalWrite(Enable,LOW);
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delayMicroseconds(1); // wait for 1ms
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}
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void LcdDataWrite(int value) {
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// initialize all pins
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int i = 0;
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digitalWrite(DI, HIGH);
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digitalWrite(RW, LOW);
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for (i=DB[0]; i <= DB[7]; i++) {
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digitalWrite(i,value & 01);
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value >>= 1;
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}
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digitalWrite(Enable,LOW);
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delayMicroseconds(1);
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digitalWrite(Enable,HIGH);
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delayMicroseconds(1);
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digitalWrite(Enable,LOW);
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delayMicroseconds(1); // wait for 1ms
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}
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void setup (void) {
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int i = 0;
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for (i=Enable; i <= DI; i++) {
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pinMode(i,OUTPUT);
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}
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delay(100);
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// initialize LCD after a brief pause
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// for LCD control
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LcdCommandWrite(0x38); // select as 8-bit interface, 2-line display, 5x7 character size
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delay(64);
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LcdCommandWrite(0x38); // select as 8-bit interface, 2-line display, 5x7 character size
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delay(50);
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LcdCommandWrite(0x38); // select as 8-bit interface, 2-line display, 5x7 character size
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delay(20);
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LcdCommandWrite(0x06); // set input mode
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// auto-increment, no display of shifting
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delay(20);
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LcdCommandWrite(0x0E); // display setup
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// turn on the monitor, cursor on, no flickering
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delay(20);
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LcdCommandWrite(0x01); // clear the scree, cursor position returns to 0
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delay(100);
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LcdCommandWrite(0x80); // display setup
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// turn on the monitor, cursor on, no flickering
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delay(20);
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}
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void loop (void) {
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LcdCommandWrite(0x01); // clear the scree, cursor position returns to 0
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delay(10);
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LcdCommandWrite(0x80+3);
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delay(10);
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// write in welcome message
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LcdDataWrite('F');
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delay(50);
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LcdDataWrite('u');
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delay(50);
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LcdDataWrite('z');
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delay(50);
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LcdDataWrite('a');
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delay(50);
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LcdDataWrite('n');
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delay(50);
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LcdDataWrite(' ');
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delay(50);
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LcdDataWrite('T');
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delay(50);
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LcdDataWrite('o');
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delay(50);
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LcdDataWrite('k');
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delay(50);
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LcdDataWrite('o');
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delay(50);
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LcdCommandWrite(0xc0+0); // set cursor position at second line, second position
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delay(10);
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LcdDataWrite('*');
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LcdDataWrite('*');delay(70);
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LcdDataWrite('T');delay(90);
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LcdDataWrite('U');delay(110);
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LcdDataWrite('R');delay(130);
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LcdDataWrite('B');delay(150);
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LcdDataWrite('O');delay(170);
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LcdDataWrite('-');delay(200);
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LcdDataWrite('M');delay(170);
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LcdDataWrite('A');delay(150);
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LcdDataWrite('S');delay(130);
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LcdDataWrite('T');delay(110);
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LcdDataWrite('E');delay(90);
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LcdDataWrite('R');delay(70);
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LcdDataWrite('*');
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LcdDataWrite('*');
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delay(3000);
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LcdCommandWrite(0x01); // clear the screen, cursor returns to 0
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delay(10);
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LcdDataWrite('A');
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LcdDataWrite('p');
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LcdDataWrite('r');
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LcdDataWrite('e');
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LcdDataWrite('n');
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LcdDataWrite('d');
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LcdDataWrite('e');
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LcdDataWrite(' ');
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LcdDataWrite('a');
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LcdDataWrite(' ');
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LcdDataWrite('u');
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LcdDataWrite('s');
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LcdDataWrite('a');
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LcdDataWrite('r');
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LcdDataWrite(' ');
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LcdDataWrite(' ');
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LcdCommandWrite(0xc0);
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LcdDataWrite(' ');
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LcdDataWrite('T');
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LcdDataWrite('E');
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LcdDataWrite('R');
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LcdDataWrite('M');
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LcdDataWrite('U');
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LcdDataWrite('X');
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LcdDataWrite(',');
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LcdDataWrite(' ');
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LcdDataWrite('d');
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LcdDataWrite('e');
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LcdDataWrite('s');
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LcdDataWrite('p');
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LcdDataWrite('u');
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LcdDataWrite('e');
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LcdDataWrite('s');
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delay(2000);
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LcdCommandWrite(0xc02); // set mode as new characters replay old ones, where there is no new ones remain the same
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delay(10);
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LcdCommandWrite(0xc80+6); // set cursor position at first line, sixth position
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delay(10);
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LcdDataWrite('S');
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LcdDataWrite('s');
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LcdDataWrite('h');
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LcdDataWrite(' ');
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LcdDataWrite(' ');
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LcdDataWrite(' ');
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delay(3000);
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}
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