Lập trình cho vi điều khiển AVR với mạch thời gian

#include <built_in.h>
#define clk1 PORTB0_bit
#define lat1 PORTB2_bit
#define sdo1 PORTB1_bit
#define clk2 PORTB3_bit
#define lat2 PORTB5_bit
#define sdo2 PORTB4_bit
#define ADC_VREF_TYPE 0x40
//CAU HINH NUT NHAN
#define BUTTON1 PINA0_bit
#define BUTTON2 PINA1_bit
#define BUTTON3 PINA2_bit

// CAU HINH GIAO TIEP I2C
sbit Soft_I2C_Scl_Output at PORTC0_bit;
sbit Soft_I2C_Sda_Output at PORTC1_bit;
sbit Soft_I2C_Scl_Input at PINC0_bit;
sbit Soft_I2C_Sda_Input at PINC1_bit;
sbit Soft_I2C_Scl_Direction at DDC0_bit;
sbit Soft_I2C_Sda_Direction at DDC1_bit;


//KHAI BAO BIEN TOAN CUC
char seconds, minutes, hours,hours1, ampm, day, date, month, year, pm, pr, flag, oldpm, count, mode, j,match,m;
int temp,adc_rd;
signed char i;
char seven_seg_code[]={0X3F,0X06,0X5B,0X4F,0X66,0X6D,0X7D,0X07,0X7F,0X6F,0XBF,0X86,0XDB,0XCF,0XE6,0XED,0XFD,0X87,0XFF,0XEF,0x37,0X39, 0XB7, 0XB9};
char timer_set[28]={0,50,40,50,40,50,40,30,30,20,10,20,10,0,7,7,8,8,9,9,10,11,13,14,15,15,16,17};
//char timer_set[28]={7,0,7,50,8,40,8,50,9,40,9,50,10,40,11,30,13,30,14,20,15,10,15,20,16,10,17,0};
char dat[14]={1,2,3,4,5,6,7,8,9,8,7,6,3,1}; //CHUA DU LIEU CUA TUNG LED
//HAM DOC DS1307
char DS1307_Read_Byte(char addr){ // ADDR LA DIA CHI THANH GHI CAN DOC
char temp;
Soft_I2C_Start();
Soft_I2C_Write(0xD0);
Soft_I2C_Write(addr);
Soft_I2C_Start();
Soft_I2C_Write(0xD1);
temp=Soft_I2C_Read(0);
Soft_I2C_Stop();
return temp; //HAM TRA VE NOI DUNG CUA THANH GHI
}
//HAM GHI DS1307
void DS1307_Write_Byte(char addr, char dat){ // ADDR LA DIA CHI THANH GHI CAN DOC, DATA LA DU LIEU CAN GHI
Soft_I2C_Start();
Soft_I2C_Write(0xD0);
Soft_I2C_Write(addr);
Soft_I2C_Write(dat);
Soft_I2C_Stop();
}
// HAM DOC THONG TIN DS1307
void RTC_Read(){
seconds = DS1307_Read_Byte(0x00);
minutes = DS1307_Read_Byte(0x01);
hours = DS1307_Read_Byte(0x02);
ampm = hours&0x40;
day = DS1307_Read_Byte(0x03);
day = day&0x07;
date = DS1307_Read_Byte(0x04);
month = DS1307_Read_Byte(0x05);
year = DS1307_Read_Byte(0x06);
//XU LY HIEN THI
if(day==1)
{dat[1]=20;
dat[0]=21;
}
else{
dat[0]=0;
dat[1]=day;
}
dat[3]=date&0x0F;
dat[2]=(date & 0x30) >> 4;
dat[5]=month & 0x0F;
dat[4]=(month & 0x10) >> 4;
dat[7]=(year & 0x0F);
dat[6]= (year & 0xF0) >> 4;
dat[9]= minutes & 0x0F;
dat[8]= (minutes & 0x70) >> 4;
if(ampm){
dat[11]= hours & 0x0F;
dat[10]= (hours & 0x10) >> 4;
pm = hours&0x20;
}
if(ampm==0){
dat[11]= hours & 0x0F;
dat[10]= (hours & 0x30) >> 4;

}

//CHUYEN DOI BCD SANG DEC CO CHON LOC
seconds = ((seconds & 0x70) >> 4)*10 + (seconds & 0x0F); //LAY 3 BIT CAO 4BIT THAP
minutes = ((minutes & 0x70) >> 4)*10 + (minutes & 0x0F); //LAY 3 BIT CAO 4BIT THAP
if(ampm){
hours =((hours & 0x10) >> 4)*10+ (hours & 0x0F); //LAY 1 BIT CAO 4BIT THAP
}
if(ampm==0) {
hours = ((hours & 0x30) >> 4)*10 + (hours & 0x0F); //LAY 2 BIT CAO 4BIT THAP
if(hours>=12) pm =0x20;
}
year = ((year & 0xF0) >> 4)*10 + (year & 0x0F); //LAY 3 BIT CAO 4BIT THAP
date = ((date & 0x30) >> 4)*10 + (date & 0x0F); //LAY 3 BIT CAO 4BIT THAP
month = ((month & 0x10) >> 4)*10 + (month & 0x0F); //LAY 3 BIT CAO 4BIT THAP
}


//HAM DOC PHIM - TRA VE VI TRI PHIM DUOC AN - MUC TAC DONG PHIM LA THAP
char Button_Read(){
if(BUTTON1==0)return 1;
if(BUTTON2==0)return 2;
if(BUTTON3==0)return 3;
return 0;
}

//HAM DOC PHIM VA CHONG DOI
char Button_Read_Debounce(){
char temp;
temp=Button_Read();
if(temp==0){ //NEU TEMP =0 THI KO CO PHIM DC NHAN
if(pr==1){ //NEU PR =1 THI TRUOC DO CO PHIM NHAN => CO CANH XUONG
pr=0; //DAT LAI TRANG THAI - LAN XET NAY KHONG CO PHIM NHAN => DANG O TRANG THAI CHO
return;
}
else {
flag=1; //BAO HIEU DANG O TRANG THAI CHO => PR TRUOC DO =0
return; //TRO VE
}
}
else{ //CO PHIM DUOC NHAN
delay_ms(30); // CHO 1 KHOANG 50MS DE CHONG DOI
temp=Button_Read(); //DOC LAI GIA TRI LAN NUA
if(temp==0) return; //NEU TEMP = 0 THI XUNG DOC DUOC KHI NAY LA DO RUNG PHIM


else{ //NEU TEMP !=0 THI BAT DAU XU LY

pr=1; // BAO HIEU LA PHIM DANG DUOC NHAN, YEU CAU XU LY XONG PH
return temp; //TRA VE DU LIEU DOC DUOC
}

}
}
//TAO THONG TIN CHO BIET DANG O CHE DO DIEU CHINH NGAY GIO VA DOI TUONG DANG DUOC CHON
void Mode_Maker(){
if(mode==1){
if(day==1){
dat[0]+=2;
dat[1]+=2;
}
else{
dat[0]+=10;
dat[1]+=10;
}
}
if(mode==2){
dat[2]+=10;
dat[3]+=10;
}
if(mode==3){
dat[4]+=10;
dat[5]+=10;
}
if(mode==4){
dat[6]+=10;
dat[7]+=10;
}
if(mode==5){
dat[10]+=10;
dat[11]+=10;
}
if(mode==6) {
dat[8]+=10;
dat[9]+=10;
}
return ;
}

//KHOI TAO CAC THIET BI
void Init(void){
//KHOI TAO UART

Soft_I2C_Init();
// CAU HINH TIMER 0
//XUNG NHIP THACH ANH CHIA 1024
CS00_bit=0;
CS01_bit=0;
CS02_bit=1;
TOIE0_bit=1;//cho phep ngat tran_ thanh ghi TIMSK
SREG_I_bit=1;//cho phep ngat toan cuc_thanh ghi SREG
TCNT0=-50;
//KIEM TRA DS1307 - CHO PHEP DAO DONG
if(Ds1307_Read_Byte(0x00)>>7==1) DS1307_Write_Byte(0x00,0x00);
DS1307_Write_Byte(0x07,0x10);
mode=8;
}

//HAM XU LY PHIM NHAN
void Button_Process(){
char key; //KHAI BAO BIEN CUC BO LUU TRU THONG TIN PHIM
key=Button_Read_Debounce();//DOC PHIM - PHIM NHAN UU TIEN CAC PHIM CO TRI SO THAP
if((pr!=0)&&(flag==1)){
flag=0;
if(key==1){ //CHON CHE DO HIEU CHINH
if(mode== mode=0; //TANG MODE XOAY VONG KHI CO PHIM DUOC NHAN
mode++;
}
if(key==2){ //TANG GIA TRI DOI TUONG LEN 1 DON VI, NEU AN DE THI TU DONG TANG VI FLAG =1
RTC_Read(); //DOC GIAI TRI DOI TUONG TRUOC KHI XU LY
flag=0; //CHO PHEP DE PHIM
delay_ms(100); //DELAY DE KHI DE PHIM, GIA TRI TANG KHONG QUA NHANH
switch(mode){ //CHON DOI TUONG XU LY
case 1: //XU LY NGAY TRONG TUAN
if(day==7) day=0; // NHU TREN
++day;
day=dec2bcd(day);
DS1307_Write_Byte(0x03,day);
break;
case 2:
//XU LY NGAY
if(date==31) date=0; //NGAY 1<=DATE<=31
++date; //TANG BIEN DATE VUA DOC DUOC
date=dec2bcd(date); //DOI SANG BCD
DS1307_Write_Byte(0x04,date); //GHI VAO DS1307
break;
case 3: //XU LY THANG
if(month==12) month=0; //THANG 1<=MONTH<=12
++month;
month=dec2bcd(month); //NHU TREN
DS1307_Write_Byte(0x05,month);
break;
case 4: //XU LY NAM
++year; //NHU TREN
if(year==100) year=0;
year=dec2bcd(year);
DS1307_Write_Byte(0x06,year);
break;
case 5: // XU LY GIO
++hours; // TANG BIEN GIO VUA DOC DUOC
if(ampm){ // THEO CHE DO 12H
if(hours>=13){ //1<=HOURS<=12
hours=1;
}
if(hours>=12){ // QUA 1 CHU KY THI DOI BUOI
if(pm!=0) pm=0;
else pm=0x20;
}
hours=dec2bcd(hours); //CHUYEN SANG BCD
oldpm=pm; //LUU BUOI HIEN TAI TRUOC KHI CHUYEN DOI HE DON VI 12=>24 VI O NHO PM SE BI GHE DE
DS1307_Write_Byte(0x02,pm|hours|ampm); //GHI VAO DS1307 VOI GIA TRI GIO, BUOI VA CHE DO GIO
}
else { if(hours==24) hours=0; //THEO CHE DO 24H
hours=dec2bcd(hours); // 0<=HOURS<=24
DS1307_Write_Byte(0x02,hours|ampm); //GHI VAO DS1307 VOI GIA TRI GIO VA CHE DO GIO
}
break;
case 6: //XU LY PHUT
if(++minutes==60) minutes=0; // PHUT 0<=MINUTES<=59
minutes=dec2bcd(minutes);
DS1307_Write_Byte(0x01,minutes);
//XOA GIAY
seconds=0; // GIAY
DS1307_Write_Byte(0x00,0);
break;
}
}

if(key==3){ //CHON HE THONG GIO 12<=>24
RTC_Read();

if(ampm){ // DANG O CHE DO 12H
oldpm=pm;
if((pm!=0)&&(hours!=12)) hours=hours+12; // NEU LA BUOI CHIEU VA KHAC 12H THI +12 VAO GIO HIEN TAI
if((pm==0)&&(hours==12)) hours=hours-12; // NEU LA BUOI SANG VA DANG LA 12 H THI GIU NGUYEN
hours=dec2bcd(hours); // DOI GIO SANG BCD
hours=hours&(~0x40); //CHO BIT 6 =0, CHON CHE DO
DS1307_Write_Byte(0x02,hours);
}
else{ //DANG O CHE DO 24H
if(hours==0) hours=12; //DANG O 0H THI CHUYEN THANH 12H
if(hours>12) hours=hours-12; //DANG O BUOI CHIEU THI TRU DI 12H
//pm=oldpm; //TRA LAI BUOI TRUOC KHI CHUYEN DOI
hours=dec2bcd(hours); // DOI GIO SANG BCD
hours=hours|0x40|pm; //CHO BIT 6=0, CHON CHE DO 12H VA KHOI PHUC BIT5(AM/PM)
DS1307_Write_Byte(0x02,hours);
}
Init();
}
return;
}
}

//***********************
//HAM GHI DU LIEU VAO 74595
void Ic74595_Write(int dat, char ic){
signed char func_count; //BIEN DEM
if(ic==1){ //CHON GHI VAO IC THU 4 DO RONG 4 BYTE
for(func_count=7;func_count>=0;func_count--){
sdo1=(dat>>func_count)&0x01; // L?Y T?NG BIT
clk1=1; //TAO XUNG DICH DU LIEU
clk1=0;
}
lat1=1; //TAO XUNG CHOT DU LIEU
lat1=0;
}
if(ic==2){ // CHON GHI VAO IC THU 2 DO RONG 2 BYTE
for(func_count=15;func_count>=0;func_count--){
sdo2=(dat>>func_count)&0x01; // LAY TUNG BIT
clk2=1; //TAO XUNG DICH DU LIEU
clk2=0;
}
lat2=1; //TAO XUNG CHOT DU LIEU
lat2=0;
}
}
// HAM QUET LED 7 DOAN
void Seven_Seg_Scan(){
if(++i>=14)i=0; // MOI LAN GHI DU LIEU 1 CON LED
// GHI DU LIEU RA CAC LED
Ic74595_Write(0xFFFF,2);//XOA DU LIEU CHON LED
Ic74595_Write(seven_seg_code[dat[i]],1);
// GHI DU LIEU CHON LED
Ic74595_Write(~(0x0001<<i),2);
}
// KHOI TAO ADC
void ADC_Init(){
REFS1_bit=1; //Vref=2.56V
REFS0_bit=1;
ADLAR_bit=0;
ADMUX|= 3;// 3 LA KENH THU ADC3
ADEN_bit=1;
ADIE_bit=1;
SFIOR=0x00; //FREE RUNNING MODE
ADCSRA|=7; //PRESCALER =128
delay_ms(10);
//ADCSRA=0x84;
}
//HAM DOC NHIET DO
void LM35_Read(){
adc_rd=ADC_Read(3);
temp=adc_rd/4-3; http://2.048
dat[13]=temp/10;
dat[12]=temp%10;
}
// KIEM TRA BAO GIO
char Alarm(){
char t1,t2;
int temp;
RTC_Read();
seconds = DS1307_Read_Byte(0x00);
seconds = ((seconds & 0x70) >> 4)*10 + (seconds & 0x0F); //LAY 3 BIT CAO 4BIT THAP
if(seconds>=10) return 0;// NEU GIAY >=10 THI TAT CHUONG
// KIEM TRA DANG O CHE DO 12 HAY 24 NEU O CHE DO 12 THI CHUYEN SANG 24 DE SO SANH
hours1=hours;
if(ampm){ // DANG O CHE DO 12H
oldpm=pm;
if((pm!=0)&&(hours1!=12)) hours1=hours1+12; // NEU LA BUOI CHIEU VA KHAC 12H THI +12 VAO GIO HIEN TAI
if((pm==0)&&(hours1==12)) hours1=hours1-12; // NEU LA BUOI SANG VA DANG LA 12 H THI GIU NGUYEN
}
for(t1=0;t1<=13;t1++){ //t1 luon la so chan

if(minutes==timer_set[t1]){
if(hours1==timer_set[t1+14]){
return 1;
}
}

}
return 0;
}


void main() {
DDRB=0xFF;
PORTB=0XFF;
DDRA=0x00;
DDRD=0xFF;
Sound_Init(&PORTD,0);
Init();

while(1){
ADC_Init();
// DOC ADC VA HIEN THI
if(j++==30)
{
j=0;
LM35_Read();
}
// DOC RTC VA HIEN THI
RTC_Read();
//KIEM TRA BAO GIO
PORTD7_bit=Alarm();
//DANH DAU MODE O CHE DO NAO
Mode_Maker();
// DOC VA XY LY PHIM
Button_Process();
}
}

void Timer0_ISR() org 0x12{
Seven_Seg_Scan();
TCNT0=-60;
}