Пример 7.2 PIC18 Си стр257-Клавиатура 4x3

: Опубликовано: 20 Февраль 2012; Создано: 20 Февраль 2012; Просмотров: 1067

primer-72-pic18-si-str257-klaviatura-4x3

Пример 1.

#include<p18cxxx.h>
#include<delays.h>
#include<string.h>
#pragma config OSC=RC
#pragma config WDT=OFF
#pragma config LVP=OFF
#pragma config BOR=OFF
#pragma config MCLRE=OFF
#define LCD PORTB
#define SDATA   PORTBbits.RB5
#define CLOCK   PORTBbits.RB4
#define E       PORTBbits.RB3
#define KEYPORT PORTA
#define DELAY   15
rom far char lookupKey[]=
{
   1,4,7,10,
   2,5,8,0,
   3,6,9,11
};
unsigned char k;
#pragma code
void Switch(char sw)
{
   do{
       while((KEYPORT&sw)!=sw);
       Delay1KTCYx(DELAY);
   }while((KEYPORT&sw)!=sw);
   do{
       while((KEYPORT&sw)==sw);
       Delay1KTCYx(DELAY);
   }while((KEYPORT&sw)==sw);
}
unsigned char Key(void)
{
   #define MASK 0x0F
   #define ROWS 4
   char a;
   char keyCode;
   PORTB=keyCode=0;
   Switch(MASK);
   PORTB=0xfe;
   while((PORTA&MASK)==MASK)
   {
       PORTB=(PORTB<<1)|1;
       keyCode+=ROWS;
   }
   for(a=1;a!=0;a<<=1)
   {
       if((PORTA&a)==0){
           break;
       }
       keyCode++;
   }
   return lookupKey[keyCode];
}
void clockShiftReg(void)
{
    CLOCK=1;
    CLOCK=0;
}
void clearShiftReg(void)
{
    char a;
    SDATA=0;
    for(a=0;a<6;a++)
        clockShiftReg();
}
void sendNibble(char nib,char RS)
{

    char a;
    clearShiftReg();
    SDATA=RS;
    clockShiftReg();
    for(a=0;a<4;a++)
    {
        SDATA=nib&1;
        clockShiftReg();
        nib>>=1;
    }
    E=1;
    E=0;
}
void SendLCDdata(char data,char RS)
{
    sendNibble(data>>4,RS);
    sendNibble(data,RS);
}
void InitLCD(void)
{
    Delay1KTCYx(20);
    sendNibble(3,0);
    Delay1KTCYx(4);
    sendNibble(3,0);
    Delay1KTCYx(12);
    SendLCDdata(0x32,0);
    SendLCDdata(0x28,0);
    SendLCDdata(0x08,0);
    SendLCDdata(0x01,0);
    Delay1KTCYx(2);
    SendLCDdata(0x06,0);
    SendLCDdata(0x0c,0);
    clearShiftReg();
}
void clrLCD(void)
{
   SendLCDdata(0x01,0);
   Delay1KTCYx(2);
}
void main(void)
{
    ADCON1=0x7f;
    TRISB=0;
    TRISA=0x0f;
    PORTB=0;
    PORTA=0;
    InitLCD();
    k=0;
    while(1)
    {
        k+='0';
        SendLCDdata(0x80,0);
        SendLCDdata(k,1);
        k=Key();
        clrLCD();
    }
}

Пример 2.

#include<p18cxxx.h>
#include<delays.h>
#include<string.h>
#pragma config OSC=RC
#pragma config WDT=OFF
#pragma config LVP=OFF
#pragma config BOR=OFF
#pragma config MCLRE=OFF
#define LCD PORTB
#define SDATA   PORTBbits.RB5
#define CLOCK   PORTBbits.RB4
#define E       PORTBbits.RB3
#define KEYPORT PORTA
#define DELAY   15
rom far char lookupKey[]=
{
   1,4,7,10,
   2,5,8,0,
   3,6,9,11
};
#pragma code
unsigned char key2asc(unsigned char keyNum)
{
   unsigned char k;
   k=keyNum;
   if(k==11)
       k=-0x0d;
   if(k==10)
       k=-6;
   k+='0';
   return k;
}
void Switch(char sw)
{
   do{
       while((KEYPORT&sw)!=sw);
       Delay1KTCYx(DELAY);
   }while((KEYPORT&sw)!=sw);
   do{
       while((KEYPORT&sw)==sw);
       Delay1KTCYx(DELAY);
   }while((KEYPORT&sw)==sw);
}
unsigned char Key(void)
{
   #define MASK 0x0F
   #define ROWS 4
   char a;
   char keyCode;
   PORTB=keyCode=0;
   Switch(MASK);
   PORTB=0x0e;
   while((PORTA&MASK)==MASK)
   {
       PORTB=(PORTB<<1)|1;
       keyCode+=ROWS;
   }
   for(a=1;a!=0;a<<=1)
   {
       if((PORTA&a)==0){
           break;
       }
       keyCode++;
   }
   return key2asc(lookupKey[keyCode]);
}
void clockShiftReg(void)
{
    CLOCK=1;
    CLOCK=0;
}
void clearShiftReg(void)
{
    char a;
    SDATA=0;
    for(a=0;a<6;a++)
        clockShiftReg();
}
void sendNibble(char nib,char RS)
{

    char a;
    clearShiftReg();
    SDATA=RS;
    clockShiftReg();
    for(a=0;a<4;a++)
    {
        SDATA=nib&1;
        clockShiftReg();
        nib>>=1;
    }
    E=1;
    E=0;
}
void SendLCDdata(char data,char RS)
{
    sendNibble(data>>4,RS);
    sendNibble(data,RS);
}
void InitLCD(void)
{
    Delay1KTCYx(20);
    sendNibble(3,0);
    Delay1KTCYx(4);
    sendNibble(3,0);
    Delay1KTCYx(12);
    SendLCDdata(0x32,0);
    SendLCDdata(0x28,0);
    SendLCDdata(0x08,0);
    SendLCDdata(0x01,0);
    Delay1KTCYx(2);
    SendLCDdata(0x06,0);
    SendLCDdata(0x0c,0);
    clearShiftReg();
}
void clrLCD(void)
{
   SendLCDdata(0x01,0);
   Delay1KTCYx(2);
}
void DisplayNum(unsigned char key,char i)
{
   if(i<16){
       SendLCDdata(0x80+i,0);
       SendLCDdata(key,1);
   }
   else if(i>=16&&i<32){
       SendLCDdata(0xc0+i-16,0);
       SendLCDdata(key,1);
   }
}
void main(void)
{
    ADCON1=0x7f;
    TRISB=0;
    TRISA=0x0f;
    PORTB=0;
    PORTA=0;
    InitLCD();
    SendLCDdata(0x80,0);
    SendLCDdata('0',1);
    while(1)
    {
        char i;
        for(i=0;i<=32;i++)
            DisplayNum(Key(),i);
       clrLCD();
       SendLCDdata(0x80,0);
        SendLCDdata('0',1);
    }
}

Пример 3.

primer-72-pic18-si-str257-klaviatura-4x4

#include<p18cxxx.h>
#include<delays.h>
#pragma config OSC=RC
#pragma config WDT=OFF
#pragma config LVP=OFF
#pragma config BOR=OFF
#pragma config MCLRE=OFF
#define LCD PORTB
#define SDATA   PORTBbits.RB6
#define CLOCK   PORTBbits.RB5
#define E       PORTBbits.RB4
#define KEYPORT PORTA
#define DELAY   15
rom far char lookupKey[]=
{
   7,4,1,-0x30,
   8,5,2,0,
   9,6,3,0x0d,
   0x0a,-0x06,-0x03,-0x05
};
#pragma code
unsigned char key2asc(unsigned char keyNum)
{
   unsigned char k;
   k=keyNum;
   k+='0';
   return k;
}
void Switch(char sw)
{
   do{
       while((KEYPORT&sw)!=sw);
       Delay1KTCYx(DELAY);
   }while((KEYPORT&sw)!=sw);
   do{
       while((KEYPORT&sw)==sw);
       Delay1KTCYx(DELAY);
   }while((KEYPORT&sw)==sw);
}
unsigned char Key(void)
{
   #define MASK 0x0F
   #define ROWS 4
   char a;
   char keyCode;
   PORTB=keyCode=0;
   Switch(MASK);
   PORTB=0x0e;
   while((PORTA&MASK)==MASK)
   {
       PORTB=(PORTB<<1)|1;
       keyCode+=ROWS;
   }
   for(a=1;a!=0;a<<=1)
   {
       if((PORTA&a)==0){
           break;
       }
       keyCode++;
   }
   return key2asc(lookupKey[keyCode]);
}
void clockShiftReg(void)
{
    CLOCK=1;
    CLOCK=0;
}
void clearShiftReg(void)
{
    char a;
    SDATA=0;
    for(a=0;a<6;a++)
        clockShiftReg();
}
void sendNibble(char nib,char RS)
{

    char a;
    clearShiftReg();
    SDATA=RS;
    clockShiftReg();
    for(a=0;a<4;a++)
    {
        SDATA=nib&1;
        clockShiftReg();
        nib>>=1;
    }
    E=1;
    E=0;
}
void SendLCDdata(char data,char RS)
{
    sendNibble(data>>4,RS);
    sendNibble(data,RS);
}
void InitLCD(void)
{
    Delay1KTCYx(20);
    sendNibble(3,0);
    Delay1KTCYx(4);
    sendNibble(3,0);
    Delay1KTCYx(12);
    SendLCDdata(0x32,0);
    SendLCDdata(0x28,0);
    SendLCDdata(0x08,0);
    SendLCDdata(0x01,0);
    Delay1KTCYx(2);
    SendLCDdata(0x06,0);
    SendLCDdata(0x0c,0);
    clearShiftReg();
}
void clrLCD(void)
{
   SendLCDdata(0x01,0);
   Delay1KTCYx(2);
}
char DisplayNum(unsigned char key,char i)
{
   if(key!=0){
       if(i<16){
           SendLCDdata(0x80+i,0);
           SendLCDdata(key,1);
       }
       else if(i>=16&&i<32){
           SendLCDdata(0xc0+i-16,0);
           SendLCDdata(key,1);
       }
       return 1;
   }
   else
        return 0;

}
void main(void)
{
    ADCON1=0x7f;
    TRISB=0;
    TRISA=0x0f;
    PORTB=0;
    PORTA=0;
    InitLCD();
    SendLCDdata(0x80,0);
    SendLCDdata('0',1);
    while(1)
    {
        char i;
        for(i=0;i<=32;i++)
            if(!DisplayNum(Key(),i))
                break;
       clrLCD();
       SendLCDdata(0x80,0);
        SendLCDdata('0',1);
    }
}

НАЗАД ДАЛЕЕ