belajar program sensor ping dengan avr
/*****************************************************
This program was produced by the
CodeWizardAVR V2.05.0 Evaluation
Automatic Program Generator
© Copyright 1998-2010 Pavel Haiduc, HP InfoTech s.r.l.
http://www.hpinfotech.com
Project : EURO
Version :
Date : 10/17/2012
Author : Freeware, for evaluation and non-commercial use only
Company : EURO TEAM
Comments:
Chip type : ATmega16
Program type : Application
AVR Core Clock frequency: 11.059200 MHz
Memory model : Small
External RAM size : 0
Data Stack size : 256
*****************************************************/
#include <mega16.h>
#include <delay.h>
#include <alcd.h>
#include <stdio.h>
#define PULSE1 PORTD.2
#define ECHO1 PIND.2
#define ARAH1 DDRD.2
#define OUT 1
#define INP 0
unsigned char kata[16];
unsigned char ping;
unsigned int ultrasonic1()
{
unsigned int count1=0; //deklarasi variabel local count: penghitung lebar ECHO
unsigned int jarak1; //dekarasi jarak: hasil pembagian lebar ECHO dengan suatu konstanta
ARAH1=OUT; //mengatur PIN I/O sebagai output
PULSE1=1; //memberikan tanda ke PING untuk memancarkan ultrasonic burst
delay_us(5); //waktu tunggu sebelum pengukuran min. 2us biasanya 5us
PULSE1=0; //menberikan sinyal low ke PING
ARAH1=INp; //arah PIN I/O diatur sebagai input
PULSE1=1; //mengatur PIN I/O sebagai pill-up
while (ECHO1==0) {}; //menunggu sinyal ECHO high
while (ECHO1==1)
{
count1++; //menghitung lebar sinyal ECHO high
}
jarak1=((float)count1)/350*3; // nilai pembagi dikalibrasi sampai sesuai dengan satuan yang diinginkan
return(jarak1); //mengembalikan jarak ke fungsi ultrasonic dengan tipe data unsigned int
}
void tampil1()
{
lcd_clear(); //membersihkan layar LCD
sprintf(kata,"%3d", ultrasonic1()); //menyusun karakter ke dalam satu baris dengan menggunakan fungsi sprintf
lcd_gotoxy(0,0); //menempatkan kursor pada koordinat 0,0 LCD
lcd_puts(kata); //mengirim data ke LCD
delay_ms(200);
}
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=Out Func6=Out Func5=Out Func4=Out Func3=Out Func2=Out Func1=Out Func0=Out
// State7=0 State6=0 State5=0 State4=0 State3=0 State2=0 State1=0 State0=0
PORTC=0x00;
DDRC=0xFF;
// 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=P State1=T State0=T
PORTD=0x04;
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);
while (1)
{
lcd_clear(); //membersihkan layar LCD
sprintf(kata,"%3d", ultrasonik1()); //menyusun karakter ke dalam satu baris dengan menggunakan fungsi sprintf
lcd_gotoxy(0,0); //menempatkan kursor pada koordinat 0,0 LCD
lcd_puts(kata); //mengirim data ke LCD
delay_ms(200);
if (ultraasonik1()<=30) //jika nilai ultrasonic1 lebih kecil dari 30 maka led pada PORTC7-PORTC3 akan menyala berjalan
{PORTC=0b01111111;
delay_ms(100);
PORTC=0b00111111;
delay_ms(100);
PORTC=0b00011111;
delay_ms(100);
PORTC=0b00001111;
delay_ms(100);
PORTC=0b00000111;
delay_ms(100); }
else
{PORTC=0b11111111;}
}
}
