main.c

来自「蓝津运动控制卡（ADuC842）开关量输入源程序」· C语言 代码 · 共 76 行

#include <stdio.h>
#include <stdlib.h>
#include "aduc842.h"
#include "port.h"
#include "global.h"

sbit endi = P3^5;
unsigned char xdata Relay _at_ RelayPort;

void RelayOutput(unsigned char channel, bit put)
{	
	unsigned char temp = put;
	if (put)
		Relay |= (1 << channel) ;     //输出1
	else 
		Relay &= ~(1 << channel) ;    //输出0
	

}
  
void Readinput(void)
{
  unsigned char temp;
  endi = 0;              //控制P0口为低电平，开启开关量输入
  for(temp = 0;temp < 1; temp++);
  temp = P0;            //读入开关量输入结果
  printf("%x\n", temp);
}
	
void InitSerial (void)   //初始化串口为9600bps
{
	SCON = 0x50;
	PCON &= 0x7F;    
	TMOD &= 0xCF;
	TMOD |= 0x20;     
	TH1 = 0xC9;
	TR1 = 1;
	TI = 1;
}

void InitRelay()
{
	Relay = 0x00;
}

void main(void)
{
	unsigned char ch, output;
	PLLCON = 0x00;  
	CFG842 = 0x41;  
	InitSerial();
	InitRelay();
	puts("\n\nThis is a sample of relay control\n\n");
	while (1)
	{
		puts("input relay channel   :(0~7)");
		ch = getchar();
		putchar('\n');
		if (ch < 48 || ch > 55)
		{
			puts("input error\n");
			continue;
		}
		puts("input output status:(0,1)");
		output = getchar();
		putchar('\n');
		if (output < 48 || output > 49)
		{
			puts("input error\n");
			continue;	
		}
		Readinput();
		RelayOutput(ch - 48, output - 48);
	}
}