micro.c

/*******************************************************
This program was created by the
CodeWizardAVR V3.12 Advanced
Automatic Program Generator
� Copyright 1998-2014 Pavel Haiduc, HP InfoTech s.r.l.
http://www.hpinfotech.com

Project : 
Version : 
Date    : 6/29/2021
Author  : 
Company : 
Comments: 


Chip type               : ATmega32
Program type            : Application
AVR Core Clock frequency: 11.059200 MHz
Memory model            : Small
External RAM size       : 0
Data Stack size         : 512
*******************************************************/

#include <mega32.h>
#include <alcd.h>
#include <delay.h>
#include <stdio.h>
#include <stdlib.h>

#define SIGN_NONE 255
#define SIGN_DIVISION 10
#define SIGN_MULTIPLICATION 11
#define SIGN_MINUS 12
#define SIGN_ON 13
#define SIGN_EQUALS 14
#define SIGN_PLUS 15

#define MAX_DIGITS 50
#define LEN_LCD 16

int delay = 20;
int delayCnt = 0;
char cursor = 0;
char text[MAX_DIGITS + 1];
char len = 0;
char spos = 0;
char buf1[LEN_LCD + 1];
char buf2[LEN_LCD + 1];

char getKey() {
	char k = SIGN_NONE;
	DDRA = 0b11110000;
	
	PORTA = 0b11101111;
	while (PINA.0 == 0) k = 7;
	while (PINA.1 == 0) k = 8;
	while (PINA.2 == 0) k = 9;
	while (PINA.3 == 0) k = SIGN_DIVISION;

	PORTA = 0b11011111;
	while (PINA.0 == 0) k = 4;
	while (PINA.1 == 0) k = 5;
	while (PINA.2 == 0) k = 6;
	while (PINA.3 == 0) k = SIGN_MULTIPLICATION;

	PORTA = 0b10111111;
	while (PINA.0 == 0) k = 1;
	while (PINA.1 == 0) k = 2;
	while (PINA.2 == 0) k = 3;
	while (PINA.3 == 0) k = SIGN_MINUS;

	PORTA = 0b01111111;
	while (PINA.0 == 0) k = SIGN_ON;
	while (PINA.1 == 0) k = 0;
	while (PINA.2 == 0) k = SIGN_EQUALS;
	while (PINA.3 == 0) k = SIGN_PLUS;

	return k;
}

void lcds(flash unsigned char *format,...) {
	char buffer[128];
	va_list va;
	va_start(va, format);
	vsprintf(buffer, format, va);
	va_end(va);
	lcd_clear();
	lcd_puts(buffer);
}

void init_bufs() {
    char i;
    for (i = 0; i < LEN_LCD; i++) {
        buf1[i] = ' ';
        buf2[i] = ' ';
    }    
}

void shift_right_buf1() {
    char i, c;
    c = buf1[LEN_LCD - 1];
    for (i = LEN_LCD - 1; i > 0; i--) {
        buf1[i] = buf1[i - 1];
    }
    buf1[0] = c;
}

void shift_left_buf2() {
    char i, c;
    c = buf2[0];
    for (i = 0; i < LEN_LCD - 1; i++) {
        buf2[i] = buf2[i + 1];
    }
    buf2[LEN_LCD - 1] = c;
}

void reset(int txt) {
    if (txt == 1) len = 0;
    delayCnt = 0;
    cursor = 0;
    spos = 0;
    init_bufs();
    lcd_clear();
}

void move() {
    if (len == 0) return;

    if (cursor < len) {
        buf1[0] = text[len - cursor - 1];
        buf2[LEN_LCD - 1] = text[cursor];
    } else {
        buf1[0] = ' ';
        buf2[LEN_LCD - 1] = ' ';
    }

    if (spos >= LEN_LCD) {
        buf1[0] = ' ';
        buf2[LEN_LCD - 1] = ' ';
    }

    lcds("%s\n%s", buf1, buf2);

    shift_right_buf1();
    shift_left_buf2();  

    cursor = (cursor + 1) % LEN_LCD;
    spos = (spos + 1) % (LEN_LCD + len);

    if (spos == 0) reset(0);
}

void getInput() {
    char k = getKey();
    if (k == SIGN_NONE) return;
    if (k > 9) return;
    text[len++] = '0' + k;
    reset(0);
}

// External Interrupt 0 service routine
interrupt [EXT_INT0] void ext_int0_isr(void) {
    reset(1);
}

// External Interrupt 1 service routine
interrupt [EXT_INT1] void ext_int1_isr(void) {

}

// Timer 0 overflow interrupt service routine
interrupt [TIM0_OVF] void timer0_ovf_isr(void) {
    TCNT0=0x53;

    delayCnt = (delayCnt + 1) % delay;
    if (delayCnt == 0) {
        move();
    }
}

// Timer1 overflow interrupt service routine
interrupt [TIM1_OVF] void timer1_ovf_isr(void) {
    // Reinitialize Timer1 value
    TCNT1H=0xBC80 >> 8;
    TCNT1L=0xBC80 & 0xff;
}

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

    // Input/Output Ports initialization
    // Port A initialization
    // Function: Bit7=In Bit6=In Bit5=In Bit4=In Bit3=In Bit2=In Bit1=In Bit0=In 
    DDRA=(0<<DDA7) | (0<<DDA6) | (0<<DDA5) | (0<<DDA4) | (0<<DDA3) | (0<<DDA2) | (0<<DDA1) | (0<<DDA0);
    // State: Bit7=T Bit6=T Bit5=T Bit4=T Bit3=T Bit2=T Bit1=T Bit0=T 
    PORTA=(0<<PORTA7) | (0<<PORTA6) | (0<<PORTA5) | (0<<PORTA4) | (0<<PORTA3) | (0<<PORTA2) | (0<<PORTA1) | (0<<PORTA0);

    // Port B initialization
    // Function: Bit7=Out Bit6=Out Bit5=Out Bit4=Out Bit3=Out Bit2=Out Bit1=Out Bit0=Out 
    DDRB=(1<<DDB7) | (1<<DDB6) | (1<<DDB5) | (1<<DDB4) | (1<<DDB3) | (1<<DDB2) | (1<<DDB1) | (1<<DDB0);
    // State: Bit7=0 Bit6=0 Bit5=0 Bit4=0 Bit3=0 Bit2=0 Bit1=0 Bit0=0 
    PORTB=(0<<PORTB7) | (0<<PORTB6) | (0<<PORTB5) | (0<<PORTB4) | (0<<PORTB3) | (0<<PORTB2) | (0<<PORTB1) | (0<<PORTB0);

    // Port C initialization
    // Function: Bit7=In Bit6=In Bit5=In Bit4=In Bit3=In Bit2=In Bit1=In Bit0=Out 
    DDRC=(0<<DDC7) | (0<<DDC6) | (0<<DDC5) | (0<<DDC4) | (0<<DDC3) | (0<<DDC2) | (0<<DDC1) | (1<<DDC0);
    // State: Bit7=T Bit6=T Bit5=T Bit4=T Bit3=T Bit2=T Bit1=T Bit0=0 
    PORTC=(0<<PORTC7) | (0<<PORTC6) | (0<<PORTC5) | (0<<PORTC4) | (0<<PORTC3) | (0<<PORTC2) | (0<<PORTC1) | (0<<PORTC0);

    // Port D initialization
    // Function: Bit7=Out Bit6=Out Bit5=Out Bit4=Out Bit3=In Bit2=In Bit1=Out Bit0=Out 
    DDRD=(1<<DDD7) | (1<<DDD6) | (1<<DDD5) | (1<<DDD4) | (0<<DDD3) | (0<<DDD2) | (1<<DDD1) | (1<<DDD0);
    // State: Bit7=1 Bit6=1 Bit5=1 Bit4=1 Bit3=T Bit2=T Bit1=0 Bit0=0 
    PORTD=(1<<PORTD7) | (1<<PORTD6) | (1<<PORTD5) | (1<<PORTD4) | (0<<PORTD3) | (0<<PORTD2) | (0<<PORTD1) | (0<<PORTD0);

    // Timer/Counter 0 initialization
    // Clock source: System Clock
    // Clock value: 172.800 kHz
    // Mode: Normal top=0xFF
    // OC0 output: Disconnected
    // Timer Period: 1.0012 ms
    TCCR0=(0<<WGM00) | (0<<COM01) | (0<<COM00) | (0<<WGM01) | (0<<CS02) | (1<<CS01) | (1<<CS00);
    TCNT0=0x53;
    OCR0=0x00;

    // Timer/Counter 1 initialization
    // Clock source: System Clock
    // Clock value: 172.800 kHz
    // Mode: Normal top=0xFFFF
    // OC1A output: Disconnected
    // OC1B output: Disconnected
    // Noise Canceler: Off
    // Input Capture on Falling Edge
    // Timer Period: 100 ms
    // Timer1 Overflow Interrupt: On
    // Input Capture Interrupt: Off
    // Compare A Match Interrupt: Off
    // Compare B Match Interrupt: Off
    TCCR1A=(0<<COM1A1) | (0<<COM1A0) | (0<<COM1B1) | (0<<COM1B0) | (0<<WGM11) | (0<<WGM10);
    TCCR1B=(0<<ICNC1) | (0<<ICES1) | (0<<WGM13) | (0<<WGM12) | (0<<CS12) | (1<<CS11) | (1<<CS10);
    TCNT1H=0xBC;
    TCNT1L=0x80;
    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=0<<AS2;
    TCCR2=(0<<PWM2) | (0<<COM21) | (0<<COM20) | (0<<CTC2) | (0<<CS22) | (0<<CS21) | (0<<CS20);
    TCNT2=0x00;
    OCR2=0x00;

    // Timer(s)/Counter(s) Interrupt(s) initialization
    TIMSK=(0<<OCIE2) | (0<<TOIE2) | (0<<TICIE1) | (0<<OCIE1A) | (0<<OCIE1B) | (1<<TOIE1) | (0<<OCIE0) | (1<<TOIE0);

    // External Interrupt(s) initialization
    // INT0: On
    // INT0 Mode: Rising Edge
    // INT1: On
    // INT1 Mode: Rising Edge
    // INT2: Off
    GICR|=(1<<INT1) | (1<<INT0) | (0<<INT2);
    MCUCR=(1<<ISC11) | (1<<ISC10) | (1<<ISC01) | (1<<ISC00);
    MCUCSR=(0<<ISC2);
    GIFR=(1<<INTF1) | (1<<INTF0) | (0<<INTF2);

    // USART initialization
    // USART disabled
    UCSRB=(0<<RXCIE) | (0<<TXCIE) | (0<<UDRIE) | (0<<RXEN) | (0<<TXEN) | (0<<UCSZ2) | (0<<RXB8) | (0<<TXB8);

    // Analog Comparator initialization
    // Analog Comparator: Off
    // The Analog Comparator's positive input is
    // connected to the AIN0 pin
    // The Analog Comparator's negative input is
    // connected to the AIN1 pin
    ACSR=(1<<ACD) | (0<<ACBG) | (0<<ACO) | (0<<ACI) | (0<<ACIE) | (0<<ACIC) | (0<<ACIS1) | (0<<ACIS0);
    SFIOR=(0<<ACME);

    // ADC initialization
    // ADC disabled
    ADCSRA=(0<<ADEN) | (0<<ADSC) | (0<<ADATE) | (0<<ADIF) | (0<<ADIE) | (0<<ADPS2) | (0<<ADPS1) | (0<<ADPS0);

    // SPI initialization
    // SPI disabled
    SPCR=(0<<SPIE) | (0<<SPE) | (0<<DORD) | (0<<MSTR) | (0<<CPOL) | (0<<CPHA) | (0<<SPR1) | (0<<SPR0);

    // TWI initialization
    // TWI disabled
    TWCR=(0<<TWEA) | (0<<TWSTA) | (0<<TWSTO) | (0<<TWEN) | (0<<TWIE);

    // Alphanumeric LCD initialization
    // Connections are specified in the
    // Project|Configure|C Compiler|Libraries|Alphanumeric LCD menu:
    // RS - PORTC Bit 1
    // RD - PORTC Bit 2
    // EN - PORTC Bit 3
    // D4 - PORTC Bit 4
    // D5 - PORTC Bit 5
    // D6 - PORTC Bit 6
    // D7 - PORTC Bit 7
    // Characters/line: 16
    lcd_init(16);

    // Global enable interrupts
    #asm("sei")

    init_bufs();
    while (1) {
        getInput();
    }
}