control.c

AD9833型高精度可编程波形发生器及其应用

/*
控制文件
对控制端口拨码开关8421判断和对正负脉冲按钮开关的判断

*/

#include <avr/io.h>
#include <avr/signal.h>
#include <avr/interrupt.h>
#include <avr/delay.h>



#include "main.h"
#include "control.h"

//---------------------------------------------
//ctr8421：对控制端口拨码开关8421判断
//
//输入：无
//输出：ctr_v	unsigned char
//---------------------------------------------
unsigned char ctr8421(void)
{
	//ctr=0		
	if(((PIND&(1<<ctr8)))&&((PIND&(1<<ctr4)))&&((PIND&(1<<ctr2)))&&((PIND&(1<<ctr1))))
	ctr_v=0;
	
	//ctr=1
	else if(((PIND&(1<<ctr8)))&&((PIND&(1<<ctr4)))&&((PIND&(1<<ctr2)))&&(!(PIND&(1<<ctr1))))
	ctr_v=1;
	
	//ctr=2		
	else if(((PIND&(1<<ctr8)))&&((PIND&(1<<ctr4)))&&(!(PIND&(1<<ctr2)))&&((PIND&(1<<ctr1))))
	ctr_v=2;
	
	//ctr=3		
	else if(((PIND&(1<<ctr8)))&&((PIND&(1<<ctr4)))&&(!(PIND&(1<<ctr2)))&&(!(PIND&(1<<ctr1))))
	ctr_v=3;
	
	//ctr=4		
	else if(((PIND&(1<<ctr8)))&&(!(PIND&(1<<ctr4)))&&((PIND&(1<<ctr2)))&&((PIND&(1<<ctr1))))
	ctr_v=4;
	
	//ctr=5		
	else if(((PIND&(1<<ctr8)))&&(!(PIND&(1<<ctr4)))&&((PIND&(1<<ctr2)))&&(!(PIND&(1<<ctr1))))
	ctr_v=5;
	
	//ctr=6		
	else if(((PIND&(1<<ctr8)))&&(!(PIND&(1<<ctr4)))&&(!(PIND&(1<<ctr2)))&&((PIND&(1<<ctr1))))
	ctr_v=6;
	
	//ctr=7		
	else if(((PIND&(1<<ctr8)))&&(!(PIND&(1<<ctr4)))&&(!(PIND&(1<<ctr2)))&&(!(PIND&(1<<ctr1))))
	ctr_v=7;
	
	//ctr=8		
	else if((!(PIND&(1<<ctr8)))&&((PIND&(1<<ctr4)))&&((PIND&(1<<ctr2)))&&((PIND&(1<<ctr1))))
	ctr_v=8;
	
	//ctr=9		
	else if((!(PIND&(1<<ctr8)))&&((PIND&(1<<ctr4)))&&((PIND&(1<<ctr2)))&&(!(PIND&(1<<ctr1))))
	ctr_v=9;
	
	return ctr_v;

}


//---------------------------------------------
//ctrpn：对正负脉冲按钮开关的判断
//
//输入：无
//输出：ctr_p	unsigned char
//---------------------------------------------
unsigned char ctrpn(void)
{
	if(!(PIND&(1<<pn)))
		ctr_pn=0;
	else
		ctr_pn=1;
	
	return ctr_pn;
}