KEYPAD PROGRAM FOR ARM7 LPC2129


                    KEYPAD PROGRAM FOR ARM7 LPC2129


PROFGRAM FOR PRINTING PHONE KEY-PAD 

#include<lpc21xx.h>
#define ROW (0Xf<<17)//r1 r2 r3 r4
 #define COL (0Xf<<21)//c1 c2 c3 c4
void delay(int count)
{
int i,j;
for(i=0;i<count;i++)
{
for(j=0;j<5000;j++)
{
}
}
}
void lcdcmd(int cmd)
{
IOCLR0=(0xff<<15);
IOSET0=(cmd<<15);
IOCLR0=(1<<10);//rs
IOCLR0=(1<<12); //RW
IOSET0=(1<<13);//EN
delay(30);
IOCLR0=(1<<13);//EN
}

void lcddata(char data)
  {
  IOCLR0=(0xff<<15);
 IOSET0=(data<<15);
IOSET0=(1<<10);//rs
IOCLR0=(1<<12); //RW
IOSET0=(1<<13);//EN
delay(30);
IOCLR0=(1<<13);//EN
  }
void lcdstr(char *str)
{
 while(*str)
 {
 lcddata(*str);
 str++;

 }
 }
  void row()
{
int C_VAL;
IODIR1 |=COL;
IOCLR1 =COL;
IODIR1&=~(ROW);
C_VAL=IOPIN1&(ROW);
C_VAL>>=17;
switch(C_VAL)
 {
case 0x0e: lcdstr("1");
break;
case 0x0d: lcdstr("2");
break;
case 0x0b: lcdstr("3");
break;
case 0x07: lcdstr("4");
break;
default: break;
}
}
 void row1()
{
int C_VAL;
IODIR1 |=COL;
IOCLR1 =COL;
IODIR1&=~(ROW);
C_VAL=IOPIN1&(ROW);
C_VAL>>=17;
switch(C_VAL)
 {
case 0x0e: lcdstr("5");
break;
case 0x0d: lcdstr("6");
break;
case 0x0b: lcdstr("7");
break;
case 0x07: lcdstr("8");
break;
default: break;
}
   }
    void row2()
{
int C_VAL;
IODIR1 |=COL;
//IOCLR1 =COL;
IODIR1&=~(ROW);
C_VAL=IOPIN1&(ROW);
C_VAL>>=17;
switch(C_VAL)
 {
case 0x0e: lcdstr("9");
break;
case 0x0d: lcdstr("a");
break;
case 0x0b: lcdstr("b");
break;
case 0x07: lcdstr("c");
break;
default: break;
}
   }
    void row3()
{
int C_VAL;
IODIR1 |=COL;
//IOCLR1 =COL;
IODIR1&=~(ROW);
C_VAL=IOPIN1&(ROW);
C_VAL>>=17;
switch(C_VAL)
 {
case 0x0e: lcdstr("d");
break;
case 0x0d: lcdstr("e");
break;
case 0x0b: lcdstr("f");
break;
case 0x07: lcdstr("g");
break;
default: break;
}
   }
int main()
{
 
int C_VAL;
IODIR0|=(1<<10)|(1<<12)|(1<<13)|(0xff<<15);
lcdcmd(0x38);
   lcdcmd(0x0E);
     lcdcmd(0x01);
   lcdcmd(0x80);
   
while(1)
{
lcdcmd(0xc0);
IODIR1 |=ROW;
//IOCLR1 =ROW;
IODIR1&=~(COL);
C_VAL=IOPIN1&(COL);
C_VAL>>=21;
switch(C_VAL)
{
case 0x0e:
row();
break;
case 0x0d:
row1();
break;
case 0x0b:
row2();
break;
case 0x07:
row3();
break;
default:break;
}
}
}

Comments

Post a Comment

Popular posts from this blog

READING VALUES FROM SENSOR AND THAT WRITING TO EEPROM

READING VALUES FROM SENSOR AND THAT WRITING TO EEPROM code for above tittle project  #include <LPC21xx.H> #include "lcdheader.h" static int count_num=0; void i2c_start(void) {   I2CONCLR=(1<<3);     //CLEARING SI FLAG I2CONSET=(1<<5);     //Start communication while(!(I2CONSET & (1<<3))){}   //wait for SI to go high   I2CONCLR=(1<<5); I2CONCLR=(1<<3); //CLEARING SI FLAG } void i2c_stop(void) { I2CONSET = (1<<4);//STOPPING DATA TRANSFER } char i2c_recv(void) {   int  r; I2CONCLR=(1<<3); while(!(I2CONSET & (1<<3))); r = I2DAT; //lcd_cmd(0xc0); //lcd_data(r);   return(r); } void i2c_data(unsigned char data) {   I2CONCLR=(1<<3);    //clearing SI Flag I2DAT=data;         //Sending SLAVE ADDRESS + READ/WRITE // lcd_data(data); while(!(I2CONSET ...
Read more
  Avoided accidents using can protocol through the smartwatch    Protocols: CAN, LCD Brief:     In this project, we checking initial conditions like seat belt etc after that if any case gets to sleep, increase or decrease blood pressure that will sense by smartwatch that information shares can protocol and giving a different indication to outside people and sending a message to 108 and their family members.    Hardware Used: lpc2129 development board (ARM7), Bluetooth, pulse measure sensor. Software Used: Keil µVision 4, Flash Magic code for the above project #include "header.h"                                                         ...
Read more

project for checking status of lights very day 12 :11 am

   project for checking status of lights very day 12 :11 am   Descripition : Where it help to save the power in big bulidings it will checking the lights states in very room where according your configure desigined  where you can send meassage to pariticular floor this room turn off lights thorght bluetooth commonds. project code #include<lpc21xx.h> #include "delayheader.h" #include "lcdheader.h" #include<string.h>       void init_rtc(void); void init_rtc() {  lcdstring("Digital timer");  CCR=(1<<0);   // enable  PREINT=456;   // crystel oscillator giving 15Mhz, but rtc will work at 32.768khz  to scle this we are using formula and geting this number   PREFRAC=25024;  HOUR=12;  ALHOUR=12;  ALMIN=10;  MIN=11;  SEC=0; } int main() {    int i;  char *password="check"; char recvpass[5];  ...
Read more