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Rất mong mọi người giúp đỡ mình. Mình không hiểu sao code rất đơn giản của mình bị mất xung encoder !
Miinhf sử dụng ATmega32A 16Mhz, encoder 1000 xung/ vòng.
Phase A mình cho vào ngắt ngoài 1 để đếm xung mỗi khi có ngắt, pha B mình nối với 1 chân bất kì portD.5, mỗi lần ngắt INT1 mình kiểm tra thanh ghi PINC.5 để xác định chiều quay.. và mình hiển thị số xung lên LCD thì thấy bị mất xung, chỉ được cỡ 860-900xung (quay thử cỡ 1 vòng).
code của mình như sau:
#include <mega32a.h>
#include <delay.h>
// I2C Bus functions
#asm
.equ __i2c_port=0x15 ;PORTC
.equ __sda_bit=1
.equ __scl_bit=0
#endasm
#include <i2c.h>
// DS1307 Real Time Clock functions
#include <ds1307.h>
// Alphanumeric LCD Module functions
#include <alcd.h>
// Declare your global variables here
unsigned char h,m,s;
unsigned char date,month,year;
unsigned int xung_thuan=0, xung_nghich=0;
char flag_int0,t=0;
//=====================================
void lcd_ds1307() //doc du lieu tu ds1307 hien thi ra LCD
{
rtc_get_time(&h,&m,&s);
rtc_get_date(&date,&month,&year);
}
//=============================== hien thi so nguyen duong ===========================================
void lcd_putnum(unsigned long int z) //hien thi toi da 5 so (bien 4 byte , max 4,294,967,295 int 2 byte 65535)
{
unsigned long z1,z2,z3,z4,z5;
z1=z/10000;
z2=(z-10000*z1)/1000;
z3=(z-10000*z1-1000*z2)/100;
z4=(z-10000*z1-1000*z2-100*z3)/10;
z5= z-10000*z1-1000*z2-100*z3-10*z4;
if(z1>0)
{
lcd_putchar(z1+48);
lcd_putchar(z2+48);
lcd_putchar(z3+48);
lcd_putchar(z4+48);
lcd_putchar(z5+48);
}
else
if (z2>0)
{
lcd_putchar(z2+48);
lcd_putchar(z3+48);
lcd_putchar(z4+48);
lcd_putchar(z5+48);
}
else
if (z3>0)
{
lcd_putchar(z3+48);
lcd_putchar(z4+48);
lcd_putchar(z5+48);
}
else
if (z4>0)
{
lcd_putchar(z4+48);
lcd_putchar(z5+48);
}
else
{
lcd_putchar(z5+48);
};
}
//=====================================
void lcd_hienthi()
{
lcd_ds1307();
lcd_clear();
lcd_gotoxy(0,0); lcd_putnum(xung_thuan);
lcd_gotoxy(0,1); lcd_putnum(xung_nghich);
lcd_gotoxy(0,2); lcd_putnum(flag_int0); lcd_gotoxy(10,2); lcd_putnum(t);
lcd_gotoxy(0,3);
lcd_putchar(h/10+48);
lcd_putchar(h%10+48);
lcd_putsf(":");
lcd_putchar(m/10+48);
lcd_putchar(m%10+48);
lcd_putsf(":");
lcd_putchar(s/10+48);
lcd_putchar(s%10+48);
lcd_gotoxy(10,3);
lcd_putchar(date/10+48);
lcd_putchar(date%10+48);
lcd_putsf(":");
lcd_putchar(month/10+48);
lcd_putchar(month%10+48);
lcd_putsf(":20");
lcd_putchar(year/10+48);
lcd_putchar(year%10+48);
}
//=====================================
// External Interrupt 0 service routine
interrupt [EXT_INT0] void ext_int0_isr(void)
{
// Place your code here
flag_int0++;
}
//=====================================
// External Interrupt 1 service routine
interrupt [EXT_INT1] void ext_int1_isr(void)
{
// Place your code here
if(PIND.5==0) //kiem tra chan PD.5
{
xung_thuan++;
}
else
{
xung_nghich++;
};
}
//=====================================
// Timer1 overflow interrupt service routine
interrupt [TIM1_OVF] void timer1_ovf_isr(void)
{
// Place your code here
t++; //tang 1s
//reinstall timer
TCNT1H=0xF0;
TCNT1L=0x00;
}
//=====================================
void main(void)
{
// Declare your local variables here
// 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=P
PORTB=0x01;
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=P State6=T State5=T State4=T State3=T State2=P State1=T State0=T
PORTD=0x84;
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: T1 pin Rising Edge
// 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=0x07;
TCNT1H=0xF0;
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: On
// INT0 Mode: Rising Edge
// INT1: On
// INT1 Mode: Rising Edge
// INT2: Off
GICR|=0xC0;
MCUCR=0x0F;
MCUCSR=0x00;
GIFR=0xC0;
// Timer(s)/Counter(s) Interrupt(s) initialization
TIMSK=0x05;
// 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;
// I2C Bus initialization
i2c_init();
// DS1307 Real Time Clock initialization
// Square wave output on pin SQW/OUT: On
// Square wave frequency: 4096Hz
rtc_init(1,1,0);
// Alphanumeric LCD initialization
// Connections specified in the
// Project|Configure|C Compiler|Libraries|Alphanumeric LCD menu:
// RS - PORTA Bit 0
// RD - PORTA Bit 1
// EN - PORTA Bit 2
// D4 - PORTA Bit 4
// D5 - PORTA Bit 5
// D6 - PORTA Bit 6
// D7 - PORTA Bit 7
// Characters/line: 20
lcd_init(20);
rtc_set_time(10,10,20);
rtc_set_date(30,04,15);
#asm("sei")
while (1)
{
// Place your code here
if(t==1)
{
t=0;
lcd_hienthi();
};
}
}
Rất mong mọi người giúp đỡ mình. Mình không hiểu sao code rất đơn giản của mình bị mất xung encoder !
Miinhf sử dụng ATmega32A 16Mhz, encoder 1000 xung/ vòng.
Phase A mình cho vào ngắt ngoài 1 để đếm xung mỗi khi có ngắt, pha B mình nối với 1 chân bất kì portD.5, mỗi lần ngắt INT1 mình kiểm tra thanh ghi PINC.5 để xác định chiều quay.. và mình hiển thị số xung lên LCD thì thấy bị mất xung, chỉ được cỡ 860-900xung (quay thử cỡ 1 vòng).
code của mình như sau:
#include <mega32a.h>
#include <delay.h>
// I2C Bus functions
#asm
.equ __i2c_port=0x15 ;PORTC
.equ __sda_bit=1
.equ __scl_bit=0
#endasm
#include <i2c.h>
// DS1307 Real Time Clock functions
#include <ds1307.h>
// Alphanumeric LCD Module functions
#include <alcd.h>
// Declare your global variables here
unsigned char h,m,s;
unsigned char date,month,year;
unsigned int xung_thuan=0, xung_nghich=0;
char flag_int0,t=0;
//=====================================
void lcd_ds1307() //doc du lieu tu ds1307 hien thi ra LCD
{
rtc_get_time(&h,&m,&s);
rtc_get_date(&date,&month,&year);
}
//=============================== hien thi so nguyen duong ===========================================
void lcd_putnum(unsigned long int z) //hien thi toi da 5 so (bien 4 byte , max 4,294,967,295 int 2 byte 65535)
{
unsigned long z1,z2,z3,z4,z5;
z1=z/10000;
z2=(z-10000*z1)/1000;
z3=(z-10000*z1-1000*z2)/100;
z4=(z-10000*z1-1000*z2-100*z3)/10;
z5= z-10000*z1-1000*z2-100*z3-10*z4;
if(z1>0)
{
lcd_putchar(z1+48);
lcd_putchar(z2+48);
lcd_putchar(z3+48);
lcd_putchar(z4+48);
lcd_putchar(z5+48);
}
else
if (z2>0)
{
lcd_putchar(z2+48);
lcd_putchar(z3+48);
lcd_putchar(z4+48);
lcd_putchar(z5+48);
}
else
if (z3>0)
{
lcd_putchar(z3+48);
lcd_putchar(z4+48);
lcd_putchar(z5+48);
}
else
if (z4>0)
{
lcd_putchar(z4+48);
lcd_putchar(z5+48);
}
else
{
lcd_putchar(z5+48);
};
}
//=====================================
void lcd_hienthi()
{
lcd_ds1307();
lcd_clear();
lcd_gotoxy(0,0); lcd_putnum(xung_thuan);
lcd_gotoxy(0,1); lcd_putnum(xung_nghich);
lcd_gotoxy(0,2); lcd_putnum(flag_int0); lcd_gotoxy(10,2); lcd_putnum(t);
lcd_gotoxy(0,3);
lcd_putchar(h/10+48);
lcd_putchar(h%10+48);
lcd_putsf(":");
lcd_putchar(m/10+48);
lcd_putchar(m%10+48);
lcd_putsf(":");
lcd_putchar(s/10+48);
lcd_putchar(s%10+48);
lcd_gotoxy(10,3);
lcd_putchar(date/10+48);
lcd_putchar(date%10+48);
lcd_putsf(":");
lcd_putchar(month/10+48);
lcd_putchar(month%10+48);
lcd_putsf(":20");
lcd_putchar(year/10+48);
lcd_putchar(year%10+48);
}
//=====================================
// External Interrupt 0 service routine
interrupt [EXT_INT0] void ext_int0_isr(void)
{
// Place your code here
flag_int0++;
}
//=====================================
// External Interrupt 1 service routine
interrupt [EXT_INT1] void ext_int1_isr(void)
{
// Place your code here
if(PIND.5==0) //kiem tra chan PD.5
{
xung_thuan++;
}
else
{
xung_nghich++;
};
}
//=====================================
// Timer1 overflow interrupt service routine
interrupt [TIM1_OVF] void timer1_ovf_isr(void)
{
// Place your code here
t++; //tang 1s
//reinstall timer
TCNT1H=0xF0;
TCNT1L=0x00;
}
//=====================================
void main(void)
{
// Declare your local variables here
// 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=P
PORTB=0x01;
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=P State6=T State5=T State4=T State3=T State2=P State1=T State0=T
PORTD=0x84;
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: T1 pin Rising Edge
// 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=0x07;
TCNT1H=0xF0;
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: On
// INT0 Mode: Rising Edge
// INT1: On
// INT1 Mode: Rising Edge
// INT2: Off
GICR|=0xC0;
MCUCR=0x0F;
MCUCSR=0x00;
GIFR=0xC0;
// Timer(s)/Counter(s) Interrupt(s) initialization
TIMSK=0x05;
// 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;
// I2C Bus initialization
i2c_init();
// DS1307 Real Time Clock initialization
// Square wave output on pin SQW/OUT: On
// Square wave frequency: 4096Hz
rtc_init(1,1,0);
// Alphanumeric LCD initialization
// Connections specified in the
// Project|Configure|C Compiler|Libraries|Alphanumeric LCD menu:
// RS - PORTA Bit 0
// RD - PORTA Bit 1
// EN - PORTA Bit 2
// D4 - PORTA Bit 4
// D5 - PORTA Bit 5
// D6 - PORTA Bit 6
// D7 - PORTA Bit 7
// Characters/line: 20
lcd_init(20);
rtc_set_time(10,10,20);
rtc_set_date(30,04,15);
#asm("sei")
while (1)
{
// Place your code here
if(t==1)
{
t=0;
lcd_hienthi();
};
}
}
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