PIC16F-8-Timer-UART&Interrupt

// UART transmit function
void UART_Transmit(char data) {
    while (!TXIF); // Wait until the transmit buffer is empty
    TXREG = data;  // Transmit the data
}

// UART send string function
void UART_SendString(const char *str) {
    while (*str) {
        UART_Transmit(*str++);
    }
}

void __interrupt() ISR() {
    if (TMR2IF) { // Check if Timer2 overflow interrupt flag is set
        TMR2IF = 0; // Clear the interrupt flag
        
        // Increment the interrupt counts
        interrupt_count1++;
        interrupt_count2++;
        interrupt_count3++;
        interrupt_count4++;
        interrupt_count5++;
        
        // Toggle LEDs based on the specified intervals
        if (interrupt_count1 >= 100) { // 10 seconds (assuming 100 ms overflow time)
            PORTBbits.RB0 ^= 1; // Toggle LED on RB0
            interrupt_count1 = 0;
        }
        if (interrupt_count2 >= 200) { // 20 seconds
            PORTBbits.RB1 ^= 1; // Toggle LED on RB1
            interrupt_count2 = 0;
        }
        if (interrupt_count3 >= 300) { // 30 seconds
            PORTBbits.RB2 ^= 1; // Toggle LED on RB2
            interrupt_count3 = 0;
        }
        if (interrupt_count4 >= 400) { // 40 seconds
            PORTBbits.RB3 ^= 1; // Toggle LED on RB3
            interrupt_count4 = 0;
        }
    }
}