PIC16F-1-Controlling_LEDs-main.c

void main() {
    // Configure I/O pins
    TRISB0 = 0; // Set RB0 as output for current sourcing (LED1)
    TRISB3 = 0; // Set RB3 as output for current sinking (LED2)
    TRISB1 = 1; // Set RB1 as input with pull-up resistor
    TRISB2 = 1; // Set RB2 as input with pull-down resistor
    
    // Initialize outputs
    RB0 = 0; // Ensure LED1 is off initially
    RB3 = 1; // Ensure LED2 is off initially (active low configuration)
    
    // Main program loop
    while (1) {
        // Check state of RB1 (pull-up configuration)
        if (RB1 == 0) {
            RB0 = 1; // Turn on LED1 (current sourcing)
        } else {
            RB0 = 0; // Turn off LED1
        }
        
        // Check state of RB2 (pull-down configuration)
        if (RB2 == 1) {
            RB3 = 0; // Turn on LED2 (current sinking)
        } else {
            RB3 = 1; // Turn off LED2
        }
    }
}