ARM LPC 2148 Embedded 'C' CODES-I

PROGRAM 1.a:

PROGRAM TO GENERATE SAW-TOOTH WAVE FORM

#include<lpc214x.h>

  void main()

  {     

    int i,x;

    PINSEL1=0X00000000;

   IODIR0=0X00FF0000;

  while(1)

          {

            for(i=0; i<256; i++)

              {

                    x=i<<16;

                    IOPIN0=x;

             }

            }

  }

PROGRAM 1.b:

PROGRAM TO GENERATE SINE WAVE

#include<lpc21xx.h>

void delay(void);

int main()

{

unsigned int sin[]={0X80,0X96,0XAB,0XC0,0XD2,0XE2,0XEE,0XF8,0XFE,

                    0X100,0XFE,0XF8,0XEE,0XE2,0XD2,0XC0,0XAB,0X96,

              0X80,0X69,0X54,0X40,0X2D,0X1D,0X11,0X07,0X01,

               0X00,0X01,0X07,0X11,0X1D,0X2D,0X40,0X54,0X69};

 int x,i;

PINSEL0=0x00000000;

IODIR0=0x00ff0000;

while(1)

{

          for(i=0;i<36;i++)

          {

                   x= sin[i]<<16;

                   IOPIN0=x;

          }

}

void delay()

{

unsigned int i;

for(i=0;i<100000;i++);

}

PROGRAM 1.c:

PROGRAM TO GENERATE SQUARE WAVE FORM

  #include<lpc214x.h>

  void delay(void);

  void main()

    PINSEL1=0X00000000;

          IODIR0=0X00FF0000;

          while(1)

          {

            IOPIN0=0X00FF0000;

            delay();

            IOPIN0=0X00000000;

            delay();

          }

  }

            void delay(void)

            {

              unsigned int i;

                   for(i=0; i<10000; i++);

            }

PROGRAM 1.d:

PROGRAM TO GENERATE TRIANGULAR WAVE FORM

#include<lpc214x.h>

void main()

  {

    int i,j,x;

    PINSEL1=0X00000000;

          IODIR0=0X00FF0000;

while(1)

          {

            for(i=0; i<256; i++)

              {

                    x=i<<16;

                    IOPIN0=x;

          }

            for(j=256; j>0; j--)

              {

                    x=j<<16;

                    IOPIN0=x;

              }

          }

  } 

PROGRAM 2:

PROGRAM TO INTERFACE UART WITH LPC2148 KIT

#include<lpc21xx.h>

void serial(void);

int main()

 {

unsigned char msg[20]=("blueskytechi");

unsigned char i;

serial();

while(1)

{

for(i=0;i<12;i++)

{

while(!(U0LSR & 0x20));

U0THR=msg[i];

}

while(!(U0LSR &0X01));

U0THR=U0RBR;

}

}

void serial()

{

PINSEL0=0X00000005;

U0LCR=0X00000083;

U0DLL=0X61;

U0LCR=0X03;

U0IER=0X01;

}

PROGRAM 3:

PROGRAM TO INTERFACE UART WITH LCD

#include<LPC21xx.h>

void display(void );

void cmd(unsigned int);

void data(unsigned char);

void delay(void);

void serial(void);

void lcd_init();

unsigned char mg;

int main()

{

  unsigned int i;

  unsigned char msg[]={"blueskytechi"};               

  serial();

  lcd_init();

   while(1)

  {

   for(i=0;i<1;i++)

    {

          while(!(U0LSR & 0x20));         

        U0THR = msg[i];

    }

   while(!(U0LSR & 0x01));

   mg=U0RBR;

   data(mg);

  //cmd(0x01)         ;

  delay();

  }

}

void serial()

{

  PINSEL0 = 0x00000005;                            // set Txd and rxd

  U0LCR = 0x83;                                // Enable latch

  U0DLL = 0x61;                                // set baud rate

  U0LCR = 0x03;                                // disable latch

  U0IER = 0x01;                                 // enable RBR interrupt

}

void lcd_init (unsigned char mg)                 

{

  unsigned int c[] = {0x30,0x20,0x28,0x01,0x06,0x0E,0x80};

  unsigned int i;

  IODIR0 = 0x000000FC;

  for(i=0;i<8;i++)

  {

   cmd(c[i]);

   delay();

  }

 }

void cmd(unsigned int x)

{

  unsigned int value;

  value = x;

  value = value & 0xF0;

  IOCLR0 = 0xF0;

  IOCLR0 = 0x04;

  IOSET0 = value;

  IOSET0 = 0x08;

 // delay();

  IOCLR0 = 0x08;

  value = x;

  value = value & 0x0F;

  value = value << 4;

  IOCLR0 = 0xF0;

  IOCLR0 = 0x04;

  IOSET0 = value;

  IOSET0 = 0x08;

//SBIKJKJHJK  delay();

  IOCLR0 = 0x08;

}

void data(unsigned char p)

{

  unsigned int value;

  value = p;

  value = value & 0xF0;

  IOCLR0 = 0xF0;

  IOSET0 = 0x04;

  IOSET0 = value;

  IOSET0 = 0x08;

  //delay();

  IOCLR0 = 0x08;

  value = p;

  value = value & 0x0F;

  value = value << 4;

  IOCLR0 = 0xF0;

  IOSET0 = 0x04;

  IOSET0 = value;

  IOSET0 = 0x08;

  //delay();

  IOCLR0 = 0x08;

}

void delay()

{

  unsigned int i;

  for(i=0;i<65000;i++);

}