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Testprogramm zum Display 162C

#include <stdio.h>
#include <stdlib.h>

#define LCD_INST 0x01
#define LCD_DATA 0x02

#define PORTD 0x378
#define PORTB 0x37A

int main(void);

/* L C D */
void outp(unsigned char, unsigned int);
void sbi(int, int);
void cbi(int, int);
void set_e(unsigned char);
void set_rs(unsigned char);
void lcd_init(void);
unsigned int power2(unsigned int);
void lcd_putchar(unsigned int, unsigned int, unsigned char);
void lcd_write(unsigned char, unsigned char, unsigned int);

/* Enable-Leitung setzen */
void set_e(unsigned char status)  /* Pin 6 blau */
{
  if(!status)
    sbi(PORTB, 1);
  else
    cbi(PORTB, 1);
}

/* Register-Select-Leitung setzen */
void set_rs(unsigned char status) /* Pin 4 gelb */
{
  if(status)
    sbi(PORTB, 2);
  else
    cbi(PORTB, 2);
}

/******************************************************/
/* Ein Zeichen (Befehl bzw. Datum) zum Display senden */
/******************************************************/
void lcd_write(unsigned char lcdmode, unsigned char value, unsigned int waitcycles)
{
  if(lcdmode == LCD_INST)
    outp(11, PORTB);  //RS=0, E=0
  else
    outp(15, PORTB);  //RS=1, E=0

  delay(waitcycles);

  set_e(1);
  outp(value & 0xF0, PORTD);
  set_e(0);

  set_e(1);
  outp((value & 0x0F) * 0x10, PORTD);
  set_e(0);

  delay(waitcycles);

}

void lcd_putchar(unsigned int row, unsigned int col, unsigned char ch)
{
  lcd_write(LCD_INST, col + 128 + row * 0x40, 1);
  lcd_write(LCD_DATA, ch, 1);
}

void lcd_cls()
{
  lcd_write(LCD_INST, 1, 5);
}

void lcd_set_display(int dispon, int cursoron, int blink)
{
  lcd_write(LCD_INST, 8 + dispon * 4 + cursoron * 2 + blink, 5);
}

void lcd_set_entrymode(int cursorincrease, int displayshifted)
{
  unsigned char x = 4;

  if(displayshifted)
    x+= 1;
  if(cursorincrease)
    x+= 2;

  lcd_write(LCD_INST, x, 5);
}

void lcd_init()
{
  lcd_write(LCD_INST, 40, 30);
  lcd_write(LCD_INST, 40, 30);
  lcd_write(LCD_INST, 40, 30);
  lcd_write(LCD_INST, 2, 5);
  lcd_write(LCD_INST, 8, 5);

  lcd_set_display(1, 0, 0);
  lcd_cls();
  lcd_set_entrymode(0, 0);
}

void lcd_putstring(unsigned int row, unsigned int col, unsigned char *s)
{
  unsigned int t1 = col;

  while(*(s))
  {
    printf("%d\n", t1);
    lcd_putchar(row, t1++, *(s++));
  }
}
 

/*************************************************/
/*         DUMMIE-Funcs vom AVR f�r TC           */
/*************************************************/
unsigned int power2(unsigned int ex)
{
  unsigned int t1, x = 1;

  for(t1 = 1; t1 <= ex; t1++)
    x *= 2;
  return x;
}

void sbi(int port, int bit)
{
  outport(port, inport(port) | power2(bit));
}

void cbi(int port, int bit)
{
  if(inport(port))
    outport(port, inport(port) ^ power2(bit));
}

void outp(unsigned char value, unsigned int port)
{
   outportb(port, value);
}

int main(void)
{
  lcd_init();

  while(!kbhit())
  {
    lcd_putstring(0, 0, "Hallo,");
    lcd_putstring(1, 0, "Welt!");
    delay(1000);
  }
  return 0;
}