LCD-display med numerisk tastatur 4x4

[polong_5]

Hej ...
Jeg har lige spørge med hensyn til emnet.er der nogen, skal du give mig nogle simple kode til at vise numeriske når der trykkes på 4x4 numeriske tastatur.LCD-skærme er 2x20 modul og ved hjælp pic 16f877.

 

[Yeeching]

Hej,
Please ref.LCD eksempel c-fil.
Det anvendes til 8.051 serielle CPU, kan du modifiy det for din CPU.

/
/
/ LCD Display
/ Ver.1,0
/ Dato 2 august 2008
/
/ For ref.kun
/
/
/*------------------------------------------------ ---------------------------*/

void LcdDelay (void)
(
int data i;
for (i = 0; i <2000; i )
(
)
)

/*------------------------------------------------ ---------------------------*/

void LcdBusy (void)
(
Lcd_RS = 0;
Lcd_RW = 1;
LcdCmdPort = 0xff;
Lcd_EN = 1;
Lcd_EN = 0;
while ((LcdCmdPort & 0x80)! = 0)
(
Lcd_EN = 0;
Lcd_EN = 1;
)
Lcd_EN = 1;
)

/*------------------------------------------------ ---------------------------*/

void LcdCmd (uchar c)
(
LcdBusy ();
LcdCmdPort = c;
Lcd_RS = 0;
Lcd_RW = 0;
Lcd_EN = 0;
Lcd_EN = 1;
)

/*------------------------------------------------ ---------------------------*/

void LcdData (uchar c)
(
LcdBusy ();
LcdDataPort = c;
Lcd_RS = 1;
Lcd_RW = 0;
Lcd_EN = 0;
Lcd_EN = 1;
LcdDelay ();
)

/*------------------------------------------------ ---------------------------*/

void LcdInit (void)
(
Lcd_RS = 1;
Lcd_RW = 1;
Lcd_EN = 1;
LcdCmd (0x38);
LcdCmd (0x38);
LcdCmd (0x06);
LcdCmd (0x0C);
LcdCmd (0x02);
)

/*------------------------------------------------ ---------------------------*/

void LcdXY (uchar x, uchar y)
(
if ((Y & 0x01)! = 0)
LcdCmd (0x80 | (x - 1));
anden
LcdCmd (0xC0 | (x - 1));
)

/*------------------------------------------------ ---------------------------*/

void LcdClr (void)
(
LcdCmd (0x01);
)

/*------------------------------------------------ ---------------------------*/

void LcdHex (uchar c)
(
LcdData (tabel [(((C & 0xf0)>> 4) & 0x0f)]);
LcdData (tabel [(C & 0x0f)]);
)

/*------------------------------------------------ ---------------------------*/[/ tex] [/ code]

[size = 9] [color = # 999999] Added efter 2 minutter: [/ color] [/ size]/
/ Dette program bruges til 8.051 seriel CPU, bare for din ref.
/
/ Dato: 1 august 2008
/
/
/# include "reg52.h"
# define RS P1_0
# define RW P1_1
# define Aktiver P1_2
sbit P1_0 = 0x90;
sbit P1_1 = 0x91;
sbit P1_2 = 0x92;
void delay (void);
void InitialLCD (void);
void WriteIns (char);
void WriteData (char);
void SKRlVSTRENG (char, char *);
void CheckBusy (void);
/ * void KeyScan (void); * /
char en = 0;
char nul = 0;
int KeyData = 0xff;
int KeyTemp = 0xff;

main ()
(
char MSG0 [] = "0123456789";
char MSG1 [] = "I Love LCD";
char msg2 [] = "02 august de 2008";
char MSG3 [] = "R = 10K. C = 10UF";
char MSG4 [] = "MCS-51";
char MSG5 [] = "01234";
char msg6 [] = "56789";
char MSG7 [] = "ABCDE";
char MSG8 [] = "Jeg elsker dig";

InitialLCD ();
SKRlVSTRENG (13, MSG3);

/ * Mens (1)
(
KeyScan ();
if (KeyData! = 0xff)
(
WriteIns (0x01);
if (KeyData == 0)
SKRlVSTRENG (10, MSG1);
else if (KeyData == 1)
SKRlVSTRENG (12, msg2);
else if (KeyData == 2)
SKRlVSTRENG (13, MSG3);
else if (KeyData == 3)
SKRlVSTRENG (6, MSG4);
KeyData = 0xff;
)
) * /
) / * Main * /

void InitialLCD (void)
(
WriteIns (0x38);
WriteIns (0x38);
WriteIns (0x38);
WriteIns (0x38);
WriteIns (0x08); / * off display * /
WriteIns (0x01); / * klar buffer * /
WriteIns (0x0e) / * on display * /
WriteIns (0x06); / * sæt input mode * /
) / * InitialLCD * /

void WriteIns (char instruktion)
(
RS = 0;
RW = 0;
Aktiver = 1;
P2 = undervisning;
Aktiver = 0;
CheckBusy ();
) / * WriteIns * /

void WriteData (char i)
(
RS = 1;
RW = 0;
Aktiver = 1;
P2 = i;
Aktiver = 0;
CheckBusy ();
) / * WriteData * /

void SKRlVSTRENG (count, MSG)
char count;
char msg [];
(
char i;
for (i = 0; i <count; i )
WriteData (MSG );
) / * SKRlVSTRENG * /

void CheckBusy (void)
(
char i = 0x80;
mens (I & 0x80)
(
RS = 0;
RW = 1;
Aktiver = 1;
i = P2;
Aktiver = 0;
forsinkelse ();
)
) / * CheckBusy * /

void delay (void)
(
int i;
for (i = 0; i <10000; i )
;
) / * Forsinkelse * /

/ * void KeyScan (void)
(
char key = 0;
char KeyStatus;
char KeyScanLine = 0x01;
char col;
char træk;
for (col = 0; col <2; col )
(
P3 = ~ KeyScanLine;
KeyStatus = ~ P3;
KeyStatus>> = 2;
for (row = 0; row <2; row )
(
if (KeyStatus == 0x01)
(
en = 0;
if (KeyTemp! = nøgle)
(
KeyTemp = key;
nul = 1;
)
anden
(
nul ;
if (nul == 5)
KeyData = KeyTemp;
)
)
tasten ;
KeyStatus>> = 1;
) * / / * Row * /
/ * KeyScanLine <<= 1;
) * / / * Col * /
/ * en ;
if (en == 5)
(
nul = 0;
KeyTemp = 0xff;
KeyData = 0xff;
)
) * / / * KeyScan * /

 

[polong_5]

Hej,
takker for de oplysninger og C-kode.

TQ