Source Code CVAVR for QS7x Series

#include <mega8535.h>

// Declare your global variables here
unsigned int uidata=0;

#include <delay.h>

#define display_port PORTC

/* Sub-program menampilkan nilai per digit pada QS7x Series */
Lanjutkan membaca Source Code CVAVR for QS7x Series

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Program CVAVR ATmega16A – Tampilan LCD Karakter (Bilangan Pecahan)

Skema DI-Smart AVR SystemSkema Rangkaian DI-Smart AVR.16 System

Skema DI-Smart LCD16x2 BoardSkema Rangkaian DI-Smart LCD16X2 Board

#include <mega16.h>

// Alphanumeric LCD Module functions
#include <alcd.h>

#include <delay.h> // Library waktu tunda

#include <stdio.h> // sprintf(…)

// Declare your global variables here
unsigned char uc_str[16]; // Memori tempat konversi ASCII untuk ditampilkan di LCD
float f=0; // Deklarasi bilangan pecahan (float)

void main(void)
{
// Declare your local variables here

// Input/Output Ports initialization
// Port A initialization
// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In
// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T
PORTA=0x00;
DDRA=0x00;

// Port B initialization
// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In
// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T
PORTB=0x00;
DDRB=0x00;

// Port C initialization
// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In
// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T
PORTC=0x00;
DDRC=0x00;

// Port D initialization
// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In
// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T
PORTD=0x00;
DDRD=0x00;

// Timer/Counter 0 initialization
// Clock source: System Clock
// Clock value: Timer 0 Stopped
// Mode: Normal top=0xFF
// OC0 output: Disconnected
TCCR0=0x00;
TCNT0=0x00;
OCR0=0x00;

// Timer/Counter 1 initialization
// Clock source: System Clock
// Clock value: Timer1 Stopped
// Mode: Normal top=0xFFFF
// OC1A output: Discon.
// OC1B output: Discon.
// Noise Canceler: Off
// Input Capture on Falling Edge
// Timer1 Overflow Interrupt: Off
// Input Capture Interrupt: Off
// Compare A Match Interrupt: Off
// Compare B Match Interrupt: Off
TCCR1A=0x00;
TCCR1B=0x00;
TCNT1H=0x00;
TCNT1L=0x00;
ICR1H=0x00;
ICR1L=0x00;
OCR1AH=0x00;
OCR1AL=0x00;
OCR1BH=0x00;
OCR1BL=0x00;

// Timer/Counter 2 initialization
// Clock source: System Clock
// Clock value: Timer2 Stopped
// Mode: Normal top=0xFF
// 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;

// USART initialization
// USART disabled
UCSRB=0x00;

// Analog Comparator initialization
// Analog Comparator: Off
// Analog Comparator Input Capture by Timer/Counter 1: Off
ACSR=0x80;
SFIOR=0x00;

// ADC initialization
// ADC disabled
ADCSRA=0x00;

// SPI initialization
// SPI disabled
SPCR=0x00;

// TWI initialization
// TWI disabled
TWCR=0x00;

// Alphanumeric LCD initialization
// Connections specified in the
// Project|Configure|C Compiler|Libraries|Alphanumeric LCD menu:
// RS – PORTB Bit 0
// RD – PORTB Bit 1
// EN – PORTB Bit 2
// D4 – PORTB Bit 4
// D5 – PORTB Bit 5
// D6 – PORTB Bit 6
// D7 – PORTB Bit 7
// Characters/line: 16
lcd_init(16);

f=1000;

while (1)
{
// Place your code here
lcd_clear();
sprintf(uc_str,”%.1f”,f); // %.1 adalah konversi ‘strings’ Bilangan Pecahan dari nilai f dgn 1 angka stlh koma
lcd_puts(uc_str); // Tampilkan uc_str ke LCD
f/=3; // f=f/3;
if(f<=0.01) f=1000; //Mengembalikan nilai f ke 1000 jika mencapai nilai 0.01
delay_ms(500); // Waktu tunda 500 ms atau 1/2 detik

// Hasil program adalah
// 1000.0
// 333.3
// 111.1
// <…>
// 0.0
// 1000.0
// dst…

// Untuk menampilkan float, perlu dilakukan pengaturan pada CVAVR:
// Klik tab ‘
Project‘, pilih ‘Configure‘, klik ‘C Compiler‘,
// Pada ‘
s(printf) Features‘ pilih ‘float, width, precision
}
}