Buzzer with PIC18F4520 Starter Board
In this tutorial we will see how to interface a switch and buzzer with PIC18F4520 starter board.
Starter PIC board comes with on board switch connected to PORTD2 which will be used to control the buzzer.
Steps
- Configure the PORT D0 as output to control the buzzer.
- Configure the PORT D2 as input to read the switch status..
- Read the switch status.
- ON/OFF the Buzzer as per switch status.
Code
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#include "gpio.h" | |
#define LED PD_0 // Led is connected to PORTD.0 | |
#define SW1 PD_2 // Switch is connected to PORTD.2 | |
/* start the main program */ | |
void main() | |
{ | |
uint8_t value; | |
GPIO_PinDirection(SW1,INPUT); // Configure the switch pin as Input | |
GPIO_PinDirection(LED,OUTPUT); // Configure the Led pin as OUTPUT | |
while(1) | |
{ | |
value = GPIO_PinRead(SW1); // Read the switch status | |
GPIO_PinWrite(LED,value); // ON/OFF the led as per switch status | |
} | |
} |