Microcontroller LCD Experiment 2-EEWORLD

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code show as below:

#include

typedef unsigned char BYTE;

typedef unsigned int WORD;

typedef bit BOOL ;

sbit rs = P2^0; //

sbit rw = P2^1;

sbit ep = P2^2;

BYTE code dis1[] = {"welcome!"};

BYTE code dis2[] = {"china !!!refuel!"};

delay(BYTE ms)

{ // Delay subroutine

BYTE i;

while(ms--)

{

for(i = 0; i< 250; i++)

{

_nop_();

}

BOOL lcd_bz()

{ // Test LCD busy status

BOOL result;

rs = 0;

rw = 1;

ep = 1;

_nop_();

result = (BOOL)(P0 & 0x80);

ep = 0;

return result;

}

lcd_wcmd(BYTE cmd)

{ // Write command data to LCD

while(lcd_bz());

rs = 0;

rw = 0;

ep = 0;

_nop_();

P0 = cmd;

_nop_();

ep = 1;

_nop_();

ep = 0;

}

lcd_pos(BYTE pos)

{ //Set the display position

lcd_wcmd(pos | 0x80);

}

lcd_wdat(BYTE dat)

{ //Write character display data to LCD

while(lcd_bz());

rs = 1;

rw = 0;

ep = 0;

P0 = that;

_nop_();

ep = 1;

_nop_();

ep = 0;

}

lcd_init()

{ //LCD initialization settings

lcd_wcmd(0x38); //

delay(1);

lcd_wcmd(0x0c); //

delay(1);

lcd_wcmd(0x06); //

delay(1);

lcd_wcmd(0x01); //Clear the LCD display content

delay(1);

}

main()

{

BYTE i;

lcd_init(); // Initialize LCD

delay(10);

lcd_pos(4); // Set the display position to the 5th character in the first line

i = 0;

while(dis1[i] != '\0')

{ // Display the text "welcome!"

lcd_wdat(dis1[i]);

i++;

}

lcd_pos(0x41); // Set the display position to the second character in the second line

i = 0;

while(dis2[i] != '\0')

{

lcd_wdat(dis2[i]); // Display characters

i++;

}

while(1); //

}

Keywords：MCU Reference address：Microcontroller LCD Experiment 2

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