#include "project.h"

static int hs_poll=50,hook=-1;

static int fake_hook;

void exti15_10_isr(void)
{
	exti_reset_request(EXTI14);
hs_poll=50;
}

static void hs_tick(void)
{
int h;
if (!hs_poll) return;
hs_poll--;

if (hs_poll) return;

h=!!gpio_get(GPIOC,GPIO14);

h^=fake_hook;

if (hook==h) return;

hook=h;

printf("Hook is now %d\r\n",hook);

if ((!hook) && (ringing)) {
	ring_off();
	answer_call();

}

if (hook) {
	ring_off();
	terminate_call();
}

	



}


void toggle_fake_hook(void)
{
fake_hook^=1;
hs_poll=50;
}

void gpio_tick(void)
{
hs_tick();
}





void gpio_init(void)
{
  /*GSM module reset pin*/
  gpio_set_mode (GPIOA, GPIO_MODE_OUTPUT_2_MHZ,
                 GPIO_CNF_OUTPUT_PUSHPULL, GPIO1);
  gpio_set(GPIOA,GPIO1);


  /*hookswitch*/
  gpio_set_mode (GPIOC, GPIO_MODE_OUTPUT_2_MHZ, GPIO_CNF_OUTPUT_PUSHPULL, GPIO15);
  gpio_set(GPIOC,GPIO15);

  gpio_set_mode (GPIOC, GPIO_MODE_INPUT, GPIO_CNF_INPUT_PULL_UPDOWN, GPIO14);
  gpio_clear(GPIOC,GPIO14);


  exti_select_source(EXTI14, GPIOC);
  exti_set_trigger(EXTI14, EXTI_TRIGGER_BOTH);
  exti_enable_request(EXTI14);

  nvic_enable_irq(NVIC_EXTI15_10_IRQ);

}