Chapter 2 PIC 16F887 Microcontroller

1. Chapter 2PIC 16F887 Microcontroller Eng. Hazem W. Marar

2. Pic 16F887

3. Ports

4. Analog Pins

5. In MikroC

6. Ansel and Anselh

7. Turn LED on • void main(){TRISB = 0 ; // set PORTB as OUTPUT PORTB = 0xff; // turn all LEDs ON}

8. Write a code to toggle an LED

9. Delays • void main( ){TRISB = 0 ; // set PORTB as OUTPUT While(1) // forever{PORTB = 0xff ; // turn all LEDs ON Delay_ms(500) ; // wait 500 ms PORTB = 0 ; // turn all LEDs OFF Delay_ms(500) ; // wait 500 ms}}

10. Use an input signal (push button) to control an LED

11. Input signal • void main( ){TRISB = 0x01 ; // set 1st bit of PORTB as INPUT While(1) // forever{ if(PORTB.F0 ==1) { PORTB.F1 = 1;} if(PORTB.F0 ==0) { PORTB.F1 = 0;} }}

12. Use an input signal (push button) to toggle an LED

13. toggle unsigned short LastButton =0; void main(){ TRISC = 0x01 ; PORTC=0x00; while(1) { if(PORTC.F0 ==1 && LastButton ==0) { PORTC.F1=~PORTC.F1; LastButton=1;} else {LastButton = PORTC.F0; } } }

14. Bouncing effect unsigned short current; unsigned short debounce ( ) { current = PORTB.F0; if( LastButton != current) { delay_ms(5); current = PORTB.F0;} return current; }

15. Use push buttons to change flashing delays

16. Use a single push button to change flashing delays

17. Managing Individual Bits

18. Use an input signal (push button) to control a LED matrix

19. Use push buttons to control multiple LED matrices

20. Lab exercise Chapter 2