keyword.txt

关于KEIL C语言的键盘扫描程序,其中有些不对的地方请给修改

#pragma SRC
#include <stdio.h>
#include <reg51.h>   

#define TRUE               1
#define FALSE              0
#define DELAY_VALUE        3

#define PinDrvKey1       P1_0
#define PinDrvKey2       P1_1
#define PinDrvKey3       P1_2
#define PinDrvKey4       P1_3

#define PinScanKey1      P1_4
#define PinScanKey2      P1_5
#define PinScanKey3      P1_6
#define PinScanKey4      p1_7

#define PinLamp          P0_0
#define pinSpeaker       P0_1

sbit    P0_0=P0^0;
sbit    P0_1=P0^1;
sbit    P0_2=P0^2;
sbit    P0_3=P0^3;
sbit    P0_4=P0^4;
sbit    P0_5=P0^5;
sbit    P0_6=P0^6;
sbit    P0_7=P0^7;

sbit    P1_0=P1^0;
sbit    P1_1=P1^1;
sbit    P1_2=P1^2;
sbit    P1_3=P1^3;
sbit    P1_4=P1^4;
sbit    P1_5=P1^5;
sbit    P1_6=P1^6;
sbit    P1_7=P1^7;

sbit    P2_0=P2^0;
sbit    P2_1=P2^1;
sbit    P2_2=P2^2;
sbit    P2_3=P2^3;
sbit    P2_4=P2^4;
sbit    P2_5=P2^5;
sbit    P2_6=P2^6;
sbit    P2_7=P2^7;

void initial(void);
void delay(short i);
unsigned char keyscan(void);

void main(void)
{
    unsigned char keyword;
    initial();
    keyword=keyscan();
}
void initial(void)
{
 P1_0=FALSE;
 P1_1=FALSE;
 P1_2=FALSE;
 P1_3=FALSE; 
 P0_0=TRUE;
 P0_1=TRUE;
}

unsigned char keyscan()
{
PinDrvKey1=TRUE;
if (PinScanKey1==TRUE)
    PinLamp=FALSE;
    PinSpeaker=FALSE;
    delay(DELAY_VALUE);
    PinLamp=TRUE;
    PinSpeaker=TRUE;
if (PinScanKey1==TRUE)
{
delay (DELAY_VALUE);
if (PinScanKey1==TRUE)
     return  1;}
if (PinScanKey2==TRUE)
   PinLamp=FALSE;
   PinSpeaker=FALSE;
   delay(DELAY_VALUE);
   PinLamp=TRUE;
   PinSpeaker=TRUE;
if (PinScanKey2==TRUE)
{
  delay(DELAY_VALUE);
if (PinScanKey2==TRUE)
    return   5;}
if (PinScanKey3==TRUE)
   PinLamp=FALSE;
   PinSpeaker=FALSE;
   delay(DELAY_VALUE);
   PinLamp=TRUE;
   PinSpeaker=TRUE;
if (PinScanKey3==TRUE)
{
  delay(DELAY_VALUE);
if (PinScanKey3==TRUE)
    return   9;}
if (PinScanKey4==TRUE)
   PinLamp=FALSE;
   PinSpeaker=FALSE;
   delay(DELAY_VALUE);
   PinLamp=TRUE;
   PinSpeaker=TRUE;
if (PinScanKey2==TRUE)
{
  delay(DELAY_VALUE);
if (PinScanKey2==TRUE)
    return   12;}
PinDrvKey1=FALSE;
PinDrvKey2=TRUE;
if (PinScanKey1==TRUE)
   PinLamp=FALSE;
   PinSpeaker=FALSE;
   delay(DELAY_VALUE);
   PinLamp=TRUE;
   PinSpeaker=TRUE;
if (PinScanKey1==TRUE)
{
  delay(DELAY_VALUE);
if (PinScanKey1==TRUE)
    return   2;}
if (PinScanKey2==TRUE)
   PinLamp=FALSE;
   PinSpeaker=FALSE;
   delay(DELAY_VALUE);
   PinLamp=TRUE;
   PinSpeaker=TRUE;
if (PinScanKey2==TRUE)
{
  delay(DELAY_VALUE);
if (PinScanKey2==TRUE)
    return   6;}
if (PinScanKey3==TRUE)
   PinLamp=FALSE;
   PinSpeaker=FALSE;
   delay(DELAY_VALUE);
   PinLamp=TRUE;
   PinSpeaker=TRUE;
if (PinScanKey3==TRUE)
{
  delay(DELAY_VALUE);
if (PinScanKey3==TRUE)
    return   0;}
if (PinScanKey4==TRUE)
   PinLamp=FALSE;
   PinSpeaker=FALSE;
   delay(DELAY_VALUE);
   PinLamp=TRUE;
   PinSpeaker=TRUE;
if (PinScanKey4==TRUE)
{
  delay(DELAY_VALUE);
if (PinScanKey4==TRUE)
    return   13;}
PinDrvKey2=FALSE;
PinDrvKey3=TRUE;
if (PinScanKey1==TRUE)
   PinLamp=FALSE;
   PinSpeaker=FALSE;
   delay(DELAY_VALUE);
   PinLamp=TRUE;
   PinSpeaker=TRUE;
if (PinScanKey1==TRUE)
{
  delay(DELAY_VALUE);
if (PinScanKey1==TRUE)
    return   3;}
if (PinScanKey2==TRUE)
   PinLamp=FALSE;
   PinSpeaker=FALSE;
   delay(DELAY_VALUE);
   PinLamp=TRUE;
   PinSpeaker=TRUE;
if (PinScanKey2==TRUE)
{
  delay(DELAY_VALUE);
if (PinScanKey2==TRUE)
    return   7;}
if (PinScanKey3==TRUE)
   PinLamp=FALSE;
   PinSpeaker=FALSE;
   delay(DELAY_VALUE);
   PinLamp=TRUE;
   PinSpeaker=TRUE;
if (PinScanKey3==TRUE)
{
  delay(DELAY_VALUE);
if (PinScanKey3==TRUE)
    return   10;}
if (PinScanKey4==TRUE)
   PinLamp=FALSE;
   PinSpeaker=FALSE;
   delay(DELAY_VALUE);
   PinLamp=TRUE;
   PinSpeaker=TRUE;
if (PinScanKey4==TRUE)
{
  delay(DELAY_VALUE);
if (PinScanKey4==TRUE)
    return   14;}
PinDrvKey3=FALSE;
PinDrvKey4=TRUE;
if (PinScanKey4==TRUE)
   PinLamp=FALSE;
   PinSpeaker=FALSE;
   delay(DELAY_VALUE);
   PinLamp=TRUE;
   PinSpeaker=TRUE;
if (PinScanKey1==TRUE)
{
  delay(DELAY_VALUE);
if (PinScanKey1==TRUE)
    return   4;}
if (PinScanKey2==TRUE)
   PinLamp=FALSE;
   PinSpeaker=FALSE;
   delay(DELAY_VALUE);
   PinLamp=TRUE;
   PinSpeaker=TRUE;
if (PinScanKey2==TRUE)
{
  delay(DELAY_VALUE);
if (PinScanKey2==TRUE)
    return   8;}
if (PinScanKey3==TRUE)
   PinLamp=FALSE;
   PinSpeaker=FALSE;
   delay(DELAY_VALUE);
   PinLamp=TRUE;
   PinSpeaker=TRUE;
if (PinScanKey3==TRUE)
{
  delay(DELAY_VALUE);
if (PinScanKey3==TRUE)
    return   11;}
if (PinScanKey4==TRUE)
   PinLamp=FALSE;
   PinSpeaker=FALSE;
   delay(DELAY_VALUE);
   PinLamp=TRUE;
   PinSpeaker=TRUE;
if (PinScanKey4==TRUE)
{
  delay(DELAY_VALUE);
if (PinScanKey4==TRUE)
    return   15;}
PinDrvKey3=FALSE;
return    16;
}

void delay(short i)
{
int j=0;
int k=0;
k=i*DELAY_VALUE;
while (j<k) j++
}