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#include <mega8.h>
#include <delay.h>
#define dl 100
#define ADC_VREF_TYPE 0xE0
#define DDR_SPI DDRB
#define DD_MOSI 3
#define DD_SCK 5
#define DD_SS 2
#define SPE 6
#define MSTR 4
#define SPR0 0
#define SPIF 7
#define SPI_ST PORTB.2
#asm
.equ __i2c_port=0x15 ;PORTC
.equ __sda_bit=4
.equ __scl_bit=5
#endasm
#include <i2c.h>
// DS1307 Real Time Clock functions
#include <ds1307.h>
unsigned char hour,min,sec,day,month,year;
unsigned char x;
unsigned char adc_value;
float vin;
int a,b,i;
unsigned char read_adc(unsigned char adc_input)
{
ADMUX=adc_input | (ADC_VREF_TYPE & 0xff);
delay_us(10);
ADCSRA|=0x40;
while ((ADCSRA & 0x10)==0);
ADCSRA|=0x10;
return ADCH;
}
void SpiMasterInit(void);
void SpiShiftByte(unsigned char nData);
void SpiWriteByte(unsigned char nData);
void SpiWrite4Bytes(unsigned char *pData);
void PutDigit(unsigned char nPos, unsigned nDigit, unsigned char nPt);
void PutByte(unsigned char nPos,unsigned char nByte);
void HienThiDoC(unsigned char nPos,unsigned char nByte);
void HienThiTG(unsigned char nPos,unsigned char Phut,unsigned char Giay );
void CH_Clear(void)
{
i2c_start();
i2c_write(0xd0);
i2c_write(0);
i2c_write(0);
i2c_stop();
}
void check(void)
{
rtc_get_date(&day,&month,&year);
if(day==0) // Neu ngay bang 0
{
day=1;
rtc_set_time(12,59,59);
}
}
unsigned char mDigits[4];
unsigned char mFont[13] = {63,6,91,79,102,109,125,7,127,111,0,99,57}; //Font digit // 0=63=0111111 ; 6=110; do= gfba= 1100011=99 C=feda=0111001
//[11]= do; [12]=C;
/**********************************************************************************/
void main(void)
{
SpiMasterInit();
// Timer(s)/Counter(s) Interrupt(s) initialization
// Analog Comparator initialization
// Analog Comparator: Off
// Analog Comparator Input Capture by Timer/Counter 1: Off
i2c_init();
rtc_init(3,1,0);
rtc_set_time(0,0,0,);
rtc_set_date(1,1,11);
CH_Clear();
ADMUX=ADC_VREF_TYPE & 0xff;
ADCSRA=0x83;
#asm("sei")
while (1)
{
// adc_value=read_adc(3);
// // Doc gia tri adc
// vin=((float)adc_value*256)/255;
//
// a = (int) vin;
// HienThiDoC(0,a);
// SpiWrite4Bytes(mDigits);
// delay_ms(100);
rtc_get_time(&hour,&min,&sec);
//if(sec>60) {sec=0;}
//if(min>60) {min=0;}
HienThiTG(0,min,sec);
SpiWrite4Bytes(mDigits);
delay_ms(100);
} //while
}
/**********************************************************************************/
void SpiMasterInit(void)
{
//set MOSI,SCK output, all other input
DDR_SPI = (1<<DD_MOSI) | (1<<DD_SCK) | (1<<DD_SS);
//enable SPI, Master, set clock rate as fck/16
SPCR = (1<<SPE) | (1<<MSTR) | (1<<SPR0);
}
/**********************************************************************************/
void SpiShiftByte(unsigned char nData)
{
SPDR = nData;
while(!(SPSR & (1<<SPIF)));
}
/**********************************************************************************/
void SpiWriteByte(unsigned char nData)
{
SPI_ST = 0;
SpiShiftByte(nData);
SPI_ST = 1;
}
/**********************************************************************************/
void SpiWrite4Bytes(unsigned char *pData)
{
SPI_ST = 0;
SpiShiftByte(~*pData);
pData++;
SpiShiftByte(~*pData);
pData++;
SpiShiftByte(~*pData);
pData++;
SpiShiftByte(~*pData);
SPI_ST = 1;
}
/**********************************************************************************/
/**********************************************************************************/
void PutDigit(unsigned char nPos, unsigned nDigit, unsigned char nPt) // npt=128 => bat point, npt =0 => ko co point
{
mDigits[nPos] = mFont[nDigit];
mDigits[nPos] = mDigits[nPos] | (nPt & 128);
}
/**********************************************************************************/
void PutByte(unsigned char nPos,unsigned char nByte)
{
unsigned char nDg;
//don vi
nDg = nByte % 100;
nDg = nDg % 10;
PutDigit(nPos,nDg,0);
//chuc
nDg = nByte/10;
nDg = nDg % 10;
PutDigit(++nPos,nDg,0);
//tram
nDg = nByte/100;
PutDigit(++nPos,nDg,0);
}
/**********************************************************************************/
void HienThiDoC(unsigned char nPos,unsigned char nByte)
{
unsigned char nDg;
//C
PutDigit(nPos,12,0);
//Do
PutDigit(++nPos,11,0);
//don vi
nDg = nByte % 100;
nDg = nDg % 10;
PutDigit(++nPos,nDg,0);
//chuc
nDg = nByte/10;
nDg = nDg % 10;
PutDigit(++nPos,nDg,0);
}
/**********************************************************************************/
void HienThiTG(unsigned char nPos,unsigned char Phut,unsigned char Giay )
{
unsigned char nDg;
//don vi Giay
nDg = Giay % 100;
nDg = nDg % 10;
PutDigit(nPos,nDg,0);
//chuc Giay
nDg = Giay/10;
nDg = nDg % 10;
PutDigit(++nPos,nDg,0);
//don vi Phut
nDg = Phut % 100;
nDg = nDg % 10;
PutDigit(++nPos,nDg,0);
//chuc Phut
nDg = Phut/10;
nDg = nDg % 10;
PutDigit(++nPos,nDg,0);
}
/**********************************************************************************/
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