#include <mega16a.h>
// Alphanumeric LCD functions
#include <alcd.h>
#include <delay.h>
#include <stdio.h>
#define SS_LCD PORTB.4
#define SS_ADC PORTB.3
#define spi_status SPSR.7
#define ADC_VREF_TYPE ((0<<REFS1) | (0<<REFS0) | (0<<ADLAR))
// Declare your global variables here
unsigned char spi(unsigned char,unsigned char chanel);
unsigned int read_adc(unsigned char );
void main(void)
{
DDRD.7=1;
PORTD.7=0;
//PORT INITIAALIZATION
DDRC=255;
DDRB=0;
PORTB=0;
DDRB.3=1;
DDRB.4=1;
DDRB.5=1;
DDRB.7=1;
//
//SPI INITIALIZATION
SPCR.7=0;//SPIE
SPCR.6=1;//SPE
SPCR.5=1;//DORD
SPCR.4=1;//MSTR
SPCR.3=1;//CPOL
SPCR.2=0;//CPHA
SPCR.1=1;//SPR1
SPCR.0=1;//SPR0
//SPSR
SPSR.0=0;//SPI2X
//
// ADC initialization
ADMUX=ADC_VREF_TYPE;
ADCSRA=(1<<ADEN) | (0<<ADSC) | (0<<ADATE) | (0<<ADIF) | (0<<ADIE) | (0<<ADPS2) | (1<<ADPS1) | (1<<ADPS0);
SFIOR=(0<<ADTS2) | (0<<ADTS1) | (0<<ADTS0);
lcd_init(16);
// Global enable interrupts
#asm("sei")
PORTB.3=1;
PORTB.4=1;
while (1)
{
char str[20];
unsigned int data;
data=(unsigned long)read_adc(0)*255/1023;
sprintf(str,"adc=%d ",data );
lcd_gotoxy(0,0);
lcd_puts(str);
spi(data,'l');
delay_ms(1);
}
}
unsigned char spi(unsigned char send_data,unsigned char chanel)
{
if (chanel=='l')
{
SS_LCD=0;
SS_ADC=1;
delay_us(100);
SPDR=send_data;
while(spi_status==0);
return SPDR;
}
else if(chanel=='a')
{
SS_LCD=1;
SS_ADC=0;
delay_us(100);
SPDR=send_data;
while(spi_status==0);
return SPDR;
}
else
{
return 0;
}
SS_LCD=1;
SS_ADC=1;
delay_us(50);
}
unsigned int read_adc(unsigned char adc_input)
{
ADMUX=adc_input | ADC_VREF_TYPE;
// Delay needed for the stabilization of the ADC input voltage
delay_us(10);
// Start the AD conversion
ADCSRA|=(1<<ADSC);
// Wait for the AD conversion to complete
while ((ADCSRA & (1<<ADIF))==0);
ADCSRA|=(1<<ADIF);
return ADCW;
}
#include <mega16a.h>
// Alphanumeric LCD functions
#include <alcd.h>
// Declare your global variables here
// SPI functions
#include <stdio.h>
#include <delay.h>
interrupt [SPI_STC] void spi_isr(void)
{
char str[32];
sprintf(str,"in Data:%i ",SPDR);
lcd_gotoxy(0,0);
lcd_puts(str);
PORTD.7=1;
}
void main(void)
{
////PORT INITIALIZATIONS
DDRA=255;
DDRC=255;
DDRD.7=1;
///-SPI
DDRB.4=0;
PORTB.4=0;
DDRB.5=0;
PORTB.5=0;
DDRB.6=1;
DDRB.7=0;
PORTB.7=0;
//
// SPI initialization
// SPI Type: Master
// SPI Clock Rate: 2*2000.000 kHz
// SPI Clock Phase: Cycle Start
// SPI Clock Polarity: Low
// SPI Data Order: MSB First
SPCR.7=1;//SPIE
SPCR.6=1;//SPE
SPCR.5=1;//DORD
SPCR.4=0;//MSTR
SPCR.3=1;//CPOL
SPCR.2=0;//CPHA
SPCR.1=0;//SPR1
SPCR.0=0;//SPR0
//SPSR
SPSR.0=0;//SPI2X
#asm("sei")
lcd_init(16);
PORTD.7=0;
while (1)
{
}
}
.png)
دیدگاه