У очень начинающего не выполняется вызов функции

/* 
 * File:   Base_PIC16F684.c
 * Author: efimius
 *
 * Created on June 24, 2024, 2:07 PM
 */
// CONFIG
 
#pragma config FOSC = INTOSCCLK // Oscillator Selection bits (INTOSC oscillator: CLKOUT function on RA4/OSC2/CLKOUT pin, I/O function on RA5/OSC1/CLKIN)
#pragma config WDTE = OFF        // Watchdog Timer Enable bit (WDT enabled)
#pragma config PWRTE = OFF      // Power-up Timer Enable bit (PWRT disabled)
#pragma config MCLRE = OFF       // MCLR Pin Function Select bit (MCLR pin function is MCLR)
#pragma config CP = OFF         // Code Protection bit (Program memory code protection is disabled)
#pragma config CPD = OFF        // Data Code Protection bit (Data memory code protection is disabled)
#pragma config BOREN = OFF       // Brown Out Detect (BOR enabled)
#pragma config IESO = OFF        // Internal External Switchover bit (Internal External Switchover mode is enabled)
#pragma config FCMEN =OFF       // Fail-Safe Clock Monitor Enabled bit (Fail-Safe Clock Monitor is enabled)
 
#define _XTAL_FREQ 8000000
#define LIGHT PORTCbits.RC3 //PIN #7 Controls leds
#define MUSIC PORTCbits.RC0 //PIN #10 Controls music chip
#define BUT1 PORTAbits.RA5 //PIN #2) TOGGLE BUTTON  log "0" or log "1"
#define BUT2 PORTAbits.RA2 //PIN #11 TOGGLE BUTTON  log "0" or log "1"
#define BUT3 PORTAbits.RA4 //PIN #4  TOGGLE BUTTON  log "0" or log "1"
 
#include <xc.h>
#include <stdio.h>
#include <stdlib.h>
 
 
//========================================
void SONG(void)
{
    if(BUT3==1)    // IF toggle button3 is "ON" (log"1")
    {
       MUSIC=0;         //Than set log "0" on PIN 2. launch music
       __delay_ms(200); //process delay
       MUSIC=1;          //Than set log "1" on PIN 2. Stop music
       __delay_ms(200); //process delay
    }
}
//=====================================
void LEDS(void)
{
 
 if(BUT1==1)        // IF toggle button1 is "ON" (log"1")
 {
    LIGHT=1;        //Than set log "1" on PIN 10. Launch led
    __delay_ms(50); //process delay
    LIGHT=0;        //Than set log "1" on PIN 10. Stop led
    __delay_ms(500);//process delay
 } 
}
 
//======================================    
void main(void) 
{
    TRISA = 0b11111111;        //PORT A INPUT
    TRISC = 0b00000000;        //PORT C OUTPUT
    CMCON0 = 7;     //  Turn off Comparators       
    ANSEL = 0;     //  Turn off ADC
    
   
   while(1)    // Call function loop
   {      
       SONG();
       LEDS();
   }
 
}
//=============================