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Код: Выделить всё

#define  SYSCLK         12000000       // System clock frequency in Hz



void T0_Wait_ms (unsigned char ms)
{
   TCON &= ~0x30;                      // Stop Timer0; Clear TF0
   TMOD &= ~0x0f;                      // 16-bit free run mode
   TMOD |=  0x01;

   CKCON |= 0x04;                      // Timer0 counts SYSCLKs

   while (ms) {
      TR0 = 0;                         // Stop Timer0
      TH0 = -(SYSCLK/1000 >> 8);       // Overflow in 1ms
      TL0 = -(SYSCLK/1000);
      TF0 = 0;                         // Clear overflow indicator
      TR0 = 1;                         // Start Timer0
      while (!TF0);                    // Wait for overflow
      ms--;                            // Update ms counter
   }

   TR0 = 0;                            // Stop Timer0
}

Код: Выделить всё

DB4 = 0;
DB5 = 0;
DB6 = 0;
DB7 = 0;
LCD_RS = 0;	// write control bytes
LCD_E = 0;


Delay(2000);// power on delay 15ms
Delay(2000);

//Set LCD_DATA to high nibble of Software Reset 
//LCD_DATA = (LCD_DATA&0x0F)|0x30; 
DB4 = 1;
DB5 = 1;
DB6 = 0;
DB7 = 0;
LCD_E = 1; 
Delay(50); // Wait 5ms 
LCD_E = 0; // Write data to display 

Delay(1000); // Wait 5ms 

LCD_E = 1;
Delay(50);
LCD_E = 0; // Write data to display again (SW Reset) 
Delay(1000); // Wait 5ms 

LCD_E = 1;
Delay(50);
LCD_E = 0; // Write data to display again (SW Reset) 
Delay(1000); // Wait 5ms 

// Set LCD_DATA to high nibble of Function Set (4Bit) 
//LCD_DATA = (LCD_DATA&0x0F)|0x20; 

DB4 = 0;
DB5 = 1;
DB6 = 0;
DB7 = 0;

LCD_E = 1;
Delay(50);
LCD_E = 0; // Write data to display 
Delay(500); 

// Set LCD_DATA to high nibble of Function Set : 4 bit, 2 lines, 5*7 font 
//LCD_DATA = (LCD_DATA&0x0F)|0x20; 

DB4 = 0;
DB5 = 1;
DB6 = 0;
DB7 = 0;
LCD_E = 1;
Delay(5);
LCD_E = 0; // Write data to display 

// Set LCD_DATA to lower nibble of Function Set : 4 bit, 2 lines, 5*7 font 
//LCD_DATA = (LCD_DATA&0x0F)|0x80; 

DB4 = 0;
DB5 = 0;
DB6 = 0;
DB7 = 1;
LCD_E = 1;
Delay(5);
LCD_E = 0; // Write data to display 
Delay(500); // Wait 400µs 

// Set LCD_DATA to high nibble of Display On/Off Control : display off, cursor off, don?t blink 
//LCD_DATA = (LCD_DATA&0x0F)|0x00; 

DB4 = 0;
DB5 = 0;
DB6 = 0;
DB7 = 0;
LCD_E = 1;
Delay(5);
LCD_E = 0; // Write data to display 

// Set LCD_DATA to lower nibble of Display On/Off Control : display off, cursor off, don?t blink 
//LCD_DATA = (LCD_DATA&0x0F)|0x80; 

DB4 = 0;
DB5 = 0;
DB6 = 0;
DB7 = 1;
LCD_E = 1;
Delay(5);
LCD_E = 0; // Write data to display 
Delay(500); // Wait 400µs 

// Set LCD_DATA to high nibble of Clear Display 
//LCD_DATA = (LCD_DATA&0x0F)|0x00; 

DB4 = 0;
DB5 = 0;
DB6 = 0;
DB7 = 0;
LCD_E = 1;
Delay(5);
LCD_E = 0; // Write data to display 

// Set LCD_DATA to lower nibble of Clear Display 
//LCD_DATA = (LCD_DATA&0x0F)|0x10; 

DB4 = 1;
DB5 = 0;
DB6 = 0;
DB7 = 0;
LCD_E = 1;
 Delay(5);
LCD_E = 0; // Write data to display 
Delay(1000); // Wait 5ms 


// Set LCD_DATA to high nibble of Entry Mode Set : increment DD-RAM address, move cursor 
//LCD_DATA = (LCD_DATA&0x0F)|0x00; 

DB4 = 0;
DB5 = 0;
DB6 = 0;
DB7 = 0;
LCD_E = 1; 
Delay(5);
LCD_E = 0; // Write data to display 

// Set LCD_DATA to lower nibble of Entry Mode Set : increment DD-RAM address, move cursor 
//LCD_DATA = (LCD_DATA&0x0F)|0x60; 

DB4 = 0;
DB5 = 1;
DB6 = 1;
DB7 = 0;
LCD_E = 1;
Delay(5);
 LCD_E = 0; // Write data to display 
Delay(500); // Wait 400µs 

Код: Выделить всё

void lcd_write(unsigned char c)
{
LCD_DATA = (c & 0x0F) << 4; //send lower-order nibble
LCD_E = 1;
Delay(50);//200microseconds	
LCD_E = 0; //LCD_STROBE;
LCD_DATA = (c & 0xF0); // send higher-order nibble
LCD_E = 1;
Delay(50);//200microseconds   
LCD_E = 0;//LCD_STROBE;
}

Код: Выделить всё

#include <C8051F310.H>
#include  <stdio.h>
// Pin Declarations
//----------------------
#define LCD_DATA P3 // data port (P3^1;P3^2;P3^3;P3^4)


sbit LCD_RS = P1^3;
sbit LCD_E = P1^4;

sbit DB4 = P3^1;
sbit DB5 = P3^2;
sbit DB6 = P3^3;
sbit DB7 = P3^4;

volatile unsigned long tmpCnt;

//-----------------------------------------------------------------------------
// Function Prototypes
//-----------------------------------------------------------------------------
void lcd_init(void); //LCD init
void OSCILLATOR_Init (void); 
void PORT_Init (void);

void lcd_write(unsigned char);

void Delay (unsigned int); 





//-----------------------------------------------------------------------------
// main() Routine
//-----------------------------------------------------------------------------

void main (void)
{
PCA0MD &= ~0x40;// WDTE = 0 (clear watchdog timer
// enable)						
OSCILLATOR_Init (); 
PORT_Init ();

while(1)
 {
Delay(3000);
LCD_E = 1;
lcd_write(0x96)	;//вводил всякие значения.
Delay(3000);
lcd_write(0x00)	;
LCD_E = 0;
 }
}

void OSCILLATOR_Init (void)
{
OSCICN |= 0x03; // Configure internal oscillator for
}

void PORT_Init (void)
{
DB4 = 0;
DB5 = 0;
DB6 = 0;
DB7 = 0;
P1MDOUT |= 0x18; //P1.4, P1.3 
P1MDOUT = 0x00;
P3MDOUT |= 0x1E; // P3.1, P3.2, P3.3, P3.4
P3MDOUT = 0x00;
XBR0 = 0x09; //sysclk
XBR1 = 0x40; // Enable crossbar and enable
// weak pull-ups
}


void Delay (unsigned int ms)
{
unsigned long tmp;
tmp = ((unsigned long) ms) * 5;
for (tmpCnt = 0; tmpCnt<tmp; tmpCnt++);
}
  


void lcd_write(char c)
{
LCD_DATA = (c & 0x0F) << 4; //send lower-order nibble
}