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8051 -5

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Ranjan Horkeri
Ranjan Horkeri

Embedded C programs using 8051

Engineering
1 of 31
8051 Embedded C
8051 C Program to send hex values for ASCII characters of 0,1,2,3,4,5,A,B,C,D to port P0. ● #include<reg51.h> void main () { unsigned char num [ ] ="012345ABCD"; unsigned char z; for (z=0; z<=10; z++) P0=num[z]; }
8051 C program for of square wave generation ● #include<reg51.h> unsigned int i, j; main () { while (1) { P0=0xff; for (i=0; i<10000; i++) for (j=0; j<1000; j++); P0=0x00; for (i=0; i<10000; i++) for (j=0; j<1000; j++); } }
8051 C program to generate step waveform ● #include<reg51.h> unsigned int i, j; void main () { while (1) { P0=0x10; for (i=0; i<10000; i++) for (j=0;j<100;j++); P0=0x20; for (i=0; i<10000; i++) for (j=0; j<200; j++); P0=0x30; for (i=0; i<10000; i++)
for (j=0; j<300; j++); P0=0x40; for (i=0; i<10000; i++) for (j=0; j<400; j++);P0=0x30; for (i=0; i<10000; i++) for (j=0; j<300; j++); P0=0x20; for (i=0; i<10000; i++) for (j=0; j<200; j++); P0=0x10; for (i=0; i<10000; i++) for (j=0; j<100; j++); } }
8051 C program to generate 100ms time delay using timer 0, mode 0 ● #include<reg51.h> void delay (); void main () { while (1) { P0=0xff; delay (); P0=0x00; delay (); } } void delay () {
unsigned int i; TMOD=0x00; for (i=0; i<20; i++) { TL0=0X03; TH0=0X0E; TR0=1; while (TF0==0);TF0=0; } TR0=0; }
8051 C program in timer 0 and mode 1 to make led on and off continuously connected to P0.1 ● #include<reg51.h> #include<stdio.h> sbit led =P0^1; void delay () void main () { While (1) { led=1; delay (); } else { led=0; delay (); }
} { void delay () { TMOD=0x01;For (i=0; i<20; i++) TL0=0xFC; TH0=0x0E; TR0=1; while (TF0==0); TF0=0; } TR0=0; }
8051 C Program Design and implement down counter using 7 segment display when counter reaches to lowest counter value then rotate dcmotor in anticlockwise direction ● #include<at89c51xd2.h> #include<stdio.h> void delay (); void dc (); void main () { while (1) { P3=0x00; P0=0x71; delay (); P0=0x79; delay (); P0=0x3f;
delay (); P0=0x39; delay (); P0=0x7f; delay (); P0=0x77; delay (); P0=0x6f; delay (); P0=0x7f; delay (); P0=0x07; delay (); P0=0x7d; delay (); P0=0x6d;
● delay (); P0=0x66; delay (); P0=0x4f; delay (); P0=0x5b; delay (); P0=0x06; delay (); P0=0x3f; delay (); dc (); } } void delay () {
unsigned int i; TMOD=0x00; for (i=0; i<15; i++) { TL0=0xfc; TH0=0x0e; TR0=1; while (TF0==0); TF0=0; } TR0=0; } void dc () { P1=0x01; delay (); P1=0xff; delay (); }
8051 C Program Design and implement stepper motor for 1 complete cycle either clockwise or anticlockwise when 1 cycle completed turn on LED ● #include<at89c51xd2.h> #include<stdio.h> void delay (); sbit led=P0^0; void main () { while (1) { P1=0x0c; delay (); P1=0x06; delay (); P1=0x03; delay (); P1=0x09;
delay (); if (P1==0x09) { led=1; } else{ led=0; } } } void delay () {
unsigned int i; TMOD=0x00; for (i=0; i<15; i++) { TL0=0xfc; TH0=0x0e; TR0=1; while (TF0==0); TF0=0; } TR0=0; }
8051 C program to design a 8bit up down counter ● #include <reg51.h> ● void main () ● { ● unsigned int i, j, k, l; ● for (i=255; i>0; i--) ● { ● P0=i; ● for (j=0; j<50000; j++); ● } ● for (k=255; k>=0; k--) ● { ● P0=i; ● for (l=0; l<50000; l++); ● } ● }
8051 C program to send temperature of -4 to +4 to port P1 ● #include<reg51.h> main () { char num [ ]={-4,-3,-2,-1,0,1,2,3,4}; unsigned char i; for (i=0; i<9; i++) P1=num[i]; }
8051 C Program to generate triangular wave ● #include<reg51.h> unsigned int i,j; void main () { while(1) { for(i=0;i<255;i++) { P0=i; for (j=0;j<10000;j++); } for(i=255;i>0;i--); } }
8051 C Program to Design 7 segment display to count from 0 to F ● #include<at89c51xd2.h> void delay(); void main() { Char num[ ]={0x03f,0x06,0x5b,0x4f,0x66,0x6d,0x07,0x7f,0x6f,0x77,0x7c,0x3a,0x5e,0x79,0x71,0x7 9}; unsigned char z; for(z=0;z<=16;z++) { P0=0x00; P1=num[z]; delay(); }
} void delay() { unsigned int i; TMOD-0x01; for(i=0;i<14;i++) {TH0=0; TL0=0; TF0=0; TR0=1; while(TF0==0); TF0=0; } TR0=0; }
8051 C program Design stepper motor to rotate clock wise ● #include<at89c51xd2.h> void delay(); void main() { while(1) { P2=0x08; delay(); P2=0x04; delay(); P2=0x02; delay(); P2=0x01; delay(); } }
void delay() { unsigned int i; TMOD=0x01; for(i=0;i<14;i++){ TH0=0; TL0=0; TF0=0; TR0=1; while(TF0==0); TF0=0; } TR0=0; }
8051 C program to display "HELLO" on LCD ● #include<at89c51xd2.h> void lcd_comm(void); void delay (int); void lcd_data(void); void lcd_init(void); unsigned char temp1; unsigned char temp2; unsigned char var,j; sbit rs=P2^7; sbit en=P2^6; int main() {
unsigned char data1[]={"HELLO"}; lcd_init(); while(1) { temp1=0x80; lcd_comm(); delay(50000); for(j=0;j<5;j++) { temp2=data1[j]; lcd_data();
delay(50000); } temp1=0x01; lcd_comm(); delay(20000); } } void lcd_init(void) { unsigned int cmd[]={0x20,0x28,0x0e,0x06,0x80,0x01}; unsigned int j; for(j=0;j<7;j++) {
temp1=cmd[j]; lcd_comm(); delay(500); } } void lcd_comm(void) { var=temp1; temp1=temp1 & 0xf0; temp1=temp1 >>4; P2=temp1;
rs=0; en=1; en=0; temp1=var & 0x0f; P2=temp1; rs=0; en=1; en=0; delay(60); } void lcd_data(void) {
var=temp2; temp2=temp2 & 0xf0; temp2=temp2 >> 4; P2=temp2; rs=1; en=1; en=0; temp2=var & 0x0f; rs=1; en=1; en=0; delay(6000);
} void delay(int count) { Int i; for (i=0;i<count++); }
THANK YOU

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8051 -5

  • 2. 8051 C Program to send hex values for ASCII characters of 0,1,2,3,4,5,A,B,C,D to port P0. ● #include<reg51.h> void main () { unsigned char num [ ] ="012345ABCD"; unsigned char z; for (z=0; z<=10; z++) P0=num[z]; }
  • 3. 8051 C program for of square wave generation ● #include<reg51.h> unsigned int i, j; main () { while (1) { P0=0xff; for (i=0; i<10000; i++) for (j=0; j<1000; j++); P0=0x00; for (i=0; i<10000; i++) for (j=0; j<1000; j++); } }
  • 4. 8051 C program to generate step waveform ● #include<reg51.h> unsigned int i, j; void main () { while (1) { P0=0x10; for (i=0; i<10000; i++) for (j=0;j<100;j++); P0=0x20; for (i=0; i<10000; i++) for (j=0; j<200; j++); P0=0x30; for (i=0; i<10000; i++)
  • 5. for (j=0; j<300; j++); P0=0x40; for (i=0; i<10000; i++) for (j=0; j<400; j++);P0=0x30; for (i=0; i<10000; i++) for (j=0; j<300; j++); P0=0x20; for (i=0; i<10000; i++) for (j=0; j<200; j++); P0=0x10; for (i=0; i<10000; i++) for (j=0; j<100; j++); } }
  • 6. 8051 C program to generate 100ms time delay using timer 0, mode 0 ● #include<reg51.h> void delay (); void main () { while (1) { P0=0xff; delay (); P0=0x00; delay (); } } void delay () {
  • 7. unsigned int i; TMOD=0x00; for (i=0; i<20; i++) { TL0=0X03; TH0=0X0E; TR0=1; while (TF0==0);TF0=0; } TR0=0; }
  • 8. 8051 C program in timer 0 and mode 1 to make led on and off continuously connected to P0.1 ● #include<reg51.h> #include<stdio.h> sbit led =P0^1; void delay () void main () { While (1) { led=1; delay (); } else { led=0; delay (); }
  • 9. } { void delay () { TMOD=0x01;For (i=0; i<20; i++) TL0=0xFC; TH0=0x0E; TR0=1; while (TF0==0); TF0=0; } TR0=0; }
  • 10. 8051 C Program Design and implement down counter using 7 segment display when counter reaches to lowest counter value then rotate dcmotor in anticlockwise direction ● #include<at89c51xd2.h> #include<stdio.h> void delay (); void dc (); void main () { while (1) { P3=0x00; P0=0x71; delay (); P0=0x79; delay (); P0=0x3f;
  • 11. delay (); P0=0x39; delay (); P0=0x7f; delay (); P0=0x77; delay (); P0=0x6f; delay (); P0=0x7f; delay (); P0=0x07; delay (); P0=0x7d; delay (); P0=0x6d;
  • 12. ● delay (); P0=0x66; delay (); P0=0x4f; delay (); P0=0x5b; delay (); P0=0x06; delay (); P0=0x3f; delay (); dc (); } } void delay () {
  • 13. unsigned int i; TMOD=0x00; for (i=0; i<15; i++) { TL0=0xfc; TH0=0x0e; TR0=1; while (TF0==0); TF0=0; } TR0=0; } void dc () { P1=0x01; delay (); P1=0xff; delay (); }
  • 14. 8051 C Program Design and implement stepper motor for 1 complete cycle either clockwise or anticlockwise when 1 cycle completed turn on LED ● #include<at89c51xd2.h> #include<stdio.h> void delay (); sbit led=P0^0; void main () { while (1) { P1=0x0c; delay (); P1=0x06; delay (); P1=0x03; delay (); P1=0x09;
  • 16. unsigned int i; TMOD=0x00; for (i=0; i<15; i++) { TL0=0xfc; TH0=0x0e; TR0=1; while (TF0==0); TF0=0; } TR0=0; }
  • 17. 8051 C program to design a 8bit up down counter ● #include <reg51.h> ● void main () ● { ● unsigned int i, j, k, l; ● for (i=255; i>0; i--) ● { ● P0=i; ● for (j=0; j<50000; j++); ● } ● for (k=255; k>=0; k--) ● { ● P0=i; ● for (l=0; l<50000; l++); ● } ● }
  • 18. 8051 C program to send temperature of -4 to +4 to port P1 ● #include<reg51.h> main () { char num [ ]={-4,-3,-2,-1,0,1,2,3,4}; unsigned char i; for (i=0; i<9; i++) P1=num[i]; }
  • 19. 8051 C Program to generate triangular wave ● #include<reg51.h> unsigned int i,j; void main () { while(1) { for(i=0;i<255;i++) { P0=i; for (j=0;j<10000;j++); } for(i=255;i>0;i--); } }
  • 20. 8051 C Program to Design 7 segment display to count from 0 to F ● #include<at89c51xd2.h> void delay(); void main() { Char num[ ]={0x03f,0x06,0x5b,0x4f,0x66,0x6d,0x07,0x7f,0x6f,0x77,0x7c,0x3a,0x5e,0x79,0x71,0x7 9}; unsigned char z; for(z=0;z<=16;z++) { P0=0x00; P1=num[z]; delay(); }
  • 21. } void delay() { unsigned int i; TMOD-0x01; for(i=0;i<14;i++) {TH0=0; TL0=0; TF0=0; TR0=1; while(TF0==0); TF0=0; } TR0=0; }
  • 22. 8051 C program Design stepper motor to rotate clock wise ● #include<at89c51xd2.h> void delay(); void main() { while(1) { P2=0x08; delay(); P2=0x04; delay(); P2=0x02; delay(); P2=0x01; delay(); } }
  • 23. void delay() { unsigned int i; TMOD=0x01; for(i=0;i<14;i++){ TH0=0; TL0=0; TF0=0; TR0=1; while(TF0==0); TF0=0; } TR0=0; }
  • 24. 8051 C program to display "HELLO" on LCD ● #include<at89c51xd2.h> void lcd_comm(void); void delay (int); void lcd_data(void); void lcd_init(void); unsigned char temp1; unsigned char temp2; unsigned char var,j; sbit rs=P2^7; sbit en=P2^6; int main() {
  • 26. delay(50000); } temp1=0x01; lcd_comm(); delay(20000); } } void lcd_init(void) { unsigned int cmd[]={0x20,0x28,0x0e,0x06,0x80,0x01}; unsigned int j; for(j=0;j<7;j++) {
  • 29. var=temp2; temp2=temp2 & 0xf0; temp2=temp2 >> 4; P2=temp2; rs=1; en=1; en=0; temp2=var & 0x0f; rs=1; en=1; en=0; delay(6000);
  • 30. } void delay(int count) { Int i; for (i=0;i<count++); }