MikroElektronika PIC Microcontrollers PIC18 Uživatelský manuál stáhnout pdf (Strana 31)

Robotics experiment with PIC microcontroller l 31

Activity 1-1 LED testing

See the Figure A1-1, RB3 of PIC16F887 is connected to LED via current limited resistor

510Ω. For turning-on this LED must send logic “1” to this port. and send logic “0” for turning-off.

A1.1.1 Write program following the Listing A1-1 then compile and download to RBX-877

V2.0 Robot Controller board. See the operation.

LED at RB3 on.

A1.1.2 Write program following the Listing A1-2 then compile and download to RBX-877

V2.0 Robot Controller board. See the operation.

LED at RB3 will blink with 0.5 second duration.

Figure A1-1 : LED connection on RBX-877 V2.0 Robot Controller board

21+$.&&%

4*!

510

LED3

4*!

void main()

{

TRISB.F3=0; // Set RB3 ==> Output

PORTB.F3=1; // Turn on RB3

}

Listing A1-1 : The C program for Turning on the RB3-LED of the RBX-877

V2.0 Robot Controller board

void main()

{

TRISB.F3=0; // Set RB3 ==> Output

while(1)

{

PORTB.F3=1; // Turn on RB3

Delay_ms(500);

PORTB.F3=0; // Turn off RB3

Delay_ms(500);

}

Listing A1-2 : The C program for Blinking the RB3-LED of the RBX-877 V2.0

Robot Controller board

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MikroElektronika PIC Microcontrollers PIC18 Uživatelský manuál Strana 31