I need to do a timer with 2 buttons(the first to run and pause, and the second to reset), and LCD 16x2

[ToddL1962]

@ian_rapini

void pausa()
{
  static int trava = 0, pausa = 0;
  {
    if(!digitalRead(botao1) && !trava)             
    { 
      trava = 1;                                 
      pausa = !pausa;                                       

    }
    if(digitalRead(botao1))                      
    {
      trava = 0;   
    }
    
  }
  while(pausa); 
}

You shouldn't name a variable the same as a function name. Also, if pausa ever becomes true you will be stuck right here until you reset:

while(pausa);