扫描嘛，书上有基本原理的介绍，也有最基本的实现方法。去看看，理解了才好下手！
//=====================================
#include "main.h"
#include "IO_Port.h"
#include "18b20.h"
//=====================================
unsigned char keyBuf[3],key;
unsigned int KCountL,KCountH;
unsigned char event;
unsigned char ClearScr;
#define NKDBONCE 5
#define NKPAUSE 5
#define NKCOUNT 5
//=====================================
//函数声明
//--------
void Ram_Init(void);
void IO_Init(void);
void delay(unsigned int t);
void onEventProc(void);
extern void CT2_Init(void);
extern void CT1_Init(void);
//=====================================
code unsigned char NUM_TAB[]={NUM_0,NUM_1,NUM_2,NUM_3,NUM_4,NUM_5,NUM_6,NUM_7,NUM_8,NUM_9,NUM_A,NUM_b,NUM_C,NUM_d,NUM_E,NUM_F};
//#define _NUM_DEC 0x0B
//#define _NUM_BLANK 0x0D
const unsigned char SCAN_Port[4]={0x80,0x40,0x20,0x10};
unsigned char myNum;
unsigned char Led7s_Buf[4];
unsigned char Counter_T1,Counter_2ms,Counter_500ms,Counter_1Kms;
unsigned char rCOM_S7LED,ucScanBIT;
unsigned char rFlag_T_En;
/*-------------------------------*/
#define COUNTER_2MS 4
#define COUNTER_500MS 250
#define COUNTER_1KMS 2
/*-------------------------------*/
unsigned int uiHEX2BCD(unsigned int uintdata);
/*主程序开始
=================================
//主程序
---------------------------------
*/
void main(void)
{
Ram_Init();
IO_Init();
//delay(20000);//上电延时，等待电源稳定
//lcdinit();
//clrscr();
rCOM_S7LED = 0xff;
pCOM_S7LED = rCOM_S7LED;
pDATA_S7LED = NUM_ALL;
delay(50000);//上电延时，等待电源稳定
rCOM_S7LED = 0xf0;
pCOM_S7LED = rCOM_S7LED;
pDATA_S7LED = NUM_BLANK;
delay(20000);
TemperatuerResult();
Led7s_Buf[0] = NUM_TAB[Temperature & 0x000f];
Led7s_Buf[1] = NUM_TAB[(Temperature & 0x00f0)>>4];
Led7s_Buf[2] = NUM_TAB[(Temperature & 0x0f00)>>8];
Led7s_Buf[3] = NUM_TAB[(Temperature & 0xf000)>>12];
CT2_Init();
CT1_Init();
EA = 1;
while(1)
{
if((Counter_1Kms&0x01)&&rFlag_T_En)
{
GetTemperature();
Temperature = uiHEX2BCD(Temperature);
ET1 = 0;
Led7s_Buf[0] = NUM_TAB[Temperature & 0x000f];
Led7s_Buf[1] = NUM_TAB[(Temperature & 0x00f0)>>4];
Led7s_Buf[2] = NUM_TAB[(Temperature & 0x0f00)>>8];
Led7s_Buf[3] = NUM_TAB[(Temperature & 0xf000)>>12];
Led7s_Buf[1] = Led7s_Buf[1]|SEG_P;
rCOM_S7LED = rCOM_S7LED^0x01;
rFlag_T_En = 0;
ET1 = 1;
}
//KeyScan();
//if(event)
//{
// event = 0;
onEventProc();
// key = 0;
//}
}
}
//======================================
/*
void KeyScan(void)
{
if(key)
{
event = EVENT_K_DOWN;
//beepout(20);
}
else
{
key=0;
}
}
*/
//============================================
//
//-----------------------
void Ram_Init(void)
{
Counter_T1 = 0;
myNum = 0;
rCOM_S7LED = 0x00;
ucScanBIT = 0;
Led7s_Buf[0] = 0;
Led7s_Buf[1] = 0;
Led7s_Buf[2] = 0;
Led7s_Buf[3] = 0;
}
//============================================
//
//-----------------------
void IO_Init(void)
{
pDATA_S7LED = NUM_BLANK;
pCOM_S7LED = rCOM_S7LED;
P1 = 0x00;
P3 = 0x00;
}
//============================================
//
//-----------------------
void delay(unsigned int t)
{
unsigned int i,j;
for(i=t;i>0;i--)
{
j=0;
j=1;
j=2;
}
}
//============================================
//
//-----------------------
void onEventProc(void)
{
}
//===========================================
void INT_CT2_PROC(void) interrupt INT_CT2 using 1
{
}
//===========================================
//8位重装模式，间隔:250*2us = 500us
//-------------------------------------------
void INT_CT1_PROC(void) interrupt INT_CT1 using 1
{//500us间隔
P1_0 = ~P1_0;
Counter_T1++;
if(Counter_T1>=COUNTER_2MS)
{//2ms间隔
Counter_T1 = 0;
//处理...
rCOM_S7LED = rCOM_S7LED&0x0F; //清除LED公共端口备份寄存器高位
pCOM_S7LED = rCOM_S7LED;//关闭公共端口，准备更新数据
pDATA_S7LED = Led7s_Buf[ucScanBIT];
rCOM_S7LED = rCOM_S7LED|SCAN_Port[ucScanBIT];//计算扫描端口
pCOM_S7LED = rCOM_S7LED;//输出扫描状态
ucScanBIT++;
if(ucScanBIT >=4 )
{
ucScanBIT = 0;
}
Counter_2ms++;
if(Counter_2ms >= COUNTER_500MS)
{//500ms间隔
Counter_2ms = 0;
//处理...
Counter_500ms++;
if(Counter_500ms >= COUNTER_1KMS)
{//1Kms间隔
Counter_500ms = 0;
//处理...
Counter_1Kms++;
rFlag_T_En = 1;
}
}
}
}
//===========================================
//unsigned int 16进制转换为BCD
//-------------------------------------------
unsigned int uiHEX2BCD(unsigned int uintdata)
{
unsigned int Tempr[5],i;
for(i=0;i<5;i++)
{
Tempr=0;
}
if(uintdata>=10000)
{
Tempr[4]=uintdata/10000;
uintdata=uintdata%10000;
}
if(uintdata>=1000)
{
Tempr[3]=uintdata/1000;
uintdata=uintdata%1000;
}
if(uintdata>=100)
{
Tempr[2]=uintdata/100;
uintdata=uintdata%100;
}
Tempr[1]=uintdata/10;
Tempr[0]=uintdata%10;
uintdata=(Tempr[3]<<12)+(Tempr[2]<<8)+(Tempr[1]<<4)+Tempr[0];
return uintdata;
}
/**/ |
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