c - how to disable external intrrupt for stm32f103 in keil? -

my problem have microchip of stm32f103.

for external interrupt function exti4_irqhandler name use.

i interrupt occurs when interrupt disable if did not run again caused problems previous interrupt.

after performing required steps . enable interrupt again.

i searched internet, found nothing.

my function:

void exti4_irqhandler(void)   {    unsigned int t=0,b=200,view;    if(end){exti->pr |= (1<<4);return;}     if (exti->pr & (1<<4))   // exti1 interrupt pending?     {            char datatm[32];       while(((gpioc->idr & 0x0010) == 0)&&(t<=b)){ t++; }       if(t>=b)       {        if(tr == 0)        {         view=rf_recieve_payload(spi1,recieve_data,32);         for(n=0;n<32;n++)datatm[n]= data[n] ^ code_data[n];           if(view == rf_data_received)           {                 if(wifi_main==0)            {             t_count=0;             transmit=0;             view=npacket_checking();             if(view==1)             {                 requested=1;                }            if(dont_send==1)            {              dont_send=0;requested=0;            }          }          }       }      else         if(tr==1)        {         view= check_sending_payload();         if(view== rf_data_send_ack_received_ok){rx_mode();}       }     }      exti->pr |= (1<<4);    }// clear pending interrupt  }