#include <mega8535.h>
#include <string.h>
// I2C Bus functions
#asm
.equ __i2c_port=0x15
.equ __sda_bit=0
.equ __scl_bit=1
#endasm
#include <i2c.h>
#include <string.h>
// Declare your global variables here
#define RS PORTA.1
#define RW PORTA.3
#define EN PORTA.5
#define DATA PORTB
#define Busy PINB.7
void send(void);
void wait_LCD(void);
void clear_LCD(void);
void LCD_init(void);
void print_LCD(char mychar[]);
void send()
{
EN = 1;
EN = 0;
}
void clear_LCD()
{
RS = 0;
DATA = 0x01;
send();
wait_LCD();
}
void wait_LCD()
{
do
{
EN = 0;
RS = 0;
RW = 1;
DDRB.7 = 0;
EN = 1;
}while(Busy);
EN = 0;
RW = 0;
DDRB.7 = 1;
}
void LCD_init()
{
RS = 0;
DATA = 0x38;
send();
wait_LCD();
RS = 0;
DATA = 0x0E;
send();
wait_LCD();
RS = 0;
DATA = 0x06;
send();
wait_LCD();
}
void print_LCD(char mychar[])
{
unsigned int i;
RS = 1;
for(i=0;i<=strlen(mychar)-1;i++)
{
DATA = mychar[i];
send();
wait_LCD();
}
}
void main(void)
{
//char mychar[20];
// Declare your local variables here
// Input/Output Ports initialization
// Port A initialization
// Func0=Out Func1=Out Func2=Out Func3=Out Func4=Out Func5=Out Func6=Out Func7=Out
// State0=0 State1=0 State2=0 State3=0 State4=0 State5=0 State6=0 State7=0
PORTA=0x00;
DDRA=0xFF;
// Port B initialization
// Func0=Out Func1=Out Func2=Out Func3=Out Func4=Out Func5=Out Func6=Out Func7=Out
// State0=0 State1=0 State2=0 State3=0 State4=0 State5=0 State6=0 State7=0
PORTB=0x00;
DDRB=0xFF;
// Port C initialization
// Func0=In Func1=In Func2=In Func3=In Func4=In Func5=In Func6=In Func7=In
// State0=T State1=T State2=T State3=T State4=T State5=T State6=T State7=T
PORTC=0x00;
DDRC=0x00;
// Port D initialization
// Func0=In Func1=In Func2=In Func3=In Func4=In Func5=In Func6=In Func7=In
// State0=T State1=T State2=T State3=T State4=T State5=T State6=T State7=T
PORTD=0x00;
DDRD=0x00;
// Timer/Counter 0 initialization
// Clock source: System Clock
// Clock value: Timer 0 Stopped
// Mode: Normal top=FFh
// OC0 output: Disconnected
TCCR0=0x00;
TCNT0=0x00;
OCR0=0x00;
// Timer/Counter 1 initialization
// Clock source: System Clock
// Clock value: Timer 1 Stopped
// Mode: Normal top=FFFFh
// OC1A output: Discon.
// OC1B output: Discon.
// Noise Canceler: Off
// Input Capture on Falling Edge
TCCR1A=0x00;
TCCR1B=0x00;
TCNT1H=0x00;
TCNT1L=0x00;
OCR1AH=0x00;
OCR1AL=0x00;
OCR1BH=0x00;
OCR1BL=0x00;
// Timer/Counter 2 initialization
// Clock source: System Clock
// Clock value: Timer 2 Stopped
// Mode: Normal top=FFh
// OC2 output: Disconnected
ASSR=0x00;
TCCR2=0x00;
TCNT2=0x00;
OCR2=0x00;
// External Interrupt(s) initialization
// INT0: Off
// INT1: Off
// INT2: Off
MCUCR=0x00;
MCUCSR=0x00;
// Timer(s)/Counter(s) Interrupt(s) initialization
TIMSK=0x00;
// Analog Comparator initialization
// Analog Comparator: Off
// Analog Comparator Input Capture by Timer/Counter 1: Off
// Analog Comparator Output: Off
ACSR=0x80;
SFIOR=0x00;
// I2C Bus initialization
i2c_init();
LCD_init();
clear_LCD();
while (1)
{
char mychar[100];
// Place your code here
strcpy(mychar,"HELLO WORLD");
print_LCD(mychar);
};
}