求助！！！程序写完，未出现错误，但是没有执行相应的行为

void key_control(HAL_Handle handle)
{
     HAL_Obj  *obj = (HAL_Obj *)handle;
     if(GPIO_read(obj->gpioHandle,GPIO_Number_12)==LOW)
         {
             usDelay(500);
             if(GPIO_read(obj->gpioHandle,GPIO_Number_12)==LOW)
             {
                 //CTRL_setSpd_ref_krpm(ctrlHandle,_IQ(0.8));
                 gMotorVars.SpeedRef_krpm=_IQ24(1.8);
                 CTRL_setSpd_ref_krpm(ctrlHandle,gMotorVars.SpeedRef_krpm);
             }
         }
         if(GPIO_read(obj->gpioHandle,GPIO_Number_13)==LOW)
             {
                 usDelay(500);
                 if(GPIO_read(obj->gpioHandle,GPIO_Number_13)==LOW)
                 {

                     CTRL_setSpd_ref_krpm(ctrlHandle,_IQ24(-1.8));

                 }
             }
         if(GPIO_read(obj->gpioHandle,GPIO_Number_22)==LOW)
             {
                 usDelay(500);
                 if(GPIO_read(obj->gpioHandle,GPIO_Number_22)==LOW)
                 {
                   for(;;)
                   {

                       CTRL_setSpd_ref_krpm(ctrlHandle,_IQ24(1.8));  // set the speed reference
                       usDelay(500);
                       CTRL_setSpd_ref_krpm(ctrlHandle,_IQ24(-1.8));
                       usDelay(5);
                   }
                 }
             }
}

为什么按键始终没有反应？

比较急，麻烦各位帮帮忙！