/***************************************************************************//**
 * @file
 * @brief Simple LED Blink Demo for EFM32GG_STK3700
 * @version 5.4.0
 *******************************************************************************
 * # License
 * <b>Copyright 2015 Silicon Labs, Inc. http://www.silabs.com</b>
 *******************************************************************************
 *
 * This file is licensed under the Silabs License Agreement. See the file
 * "Silabs_License_Agreement.txt" for details. Before using this software for
 * any purpose, you must agree to the terms of that agreement.
 *
 ******************************************************************************/
#include <stdio.h>
#include <stdint.h>
#include <stdbool.h>
#include "em_device.h"
#include "em_chip.h"
#include "em_cmu.h"
#include "em_emu.h"
#include "bsp.h"
#include "bsp_trace.h"
#include "em_adc.h"

#define adcFreq   16000000


#define BUTTON_PORT     gpioPortD
#define BUTTON_PIN      7
#define STATUS 200
#define BUZZER_PORT    	gpioPortD
#define BUZZER_PIN      6



volatile uint32_t msTicks; /* counts 1ms timeTicks */

void Delay(uint32_t dlyTicks);

/***************************************************************************//**
 * @brief SysTick_Handler
 * Interrupt Service Routine for system tick counter
 ******************************************************************************/
void SysTick_Handler(void)
{
  msTicks++;       /* increment counter necessary in Delay()*/
}

/***************************************************************************//**
 * @brief Delays number of msTick Systicks (typically 1 ms)
 * @param dlyTicks Number of ticks to delay
 ******************************************************************************/
void Delay(uint32_t dlyTicks)
{
  uint32_t curTicks;

  curTicks = msTicks;
  while ((msTicks - curTicks) < dlyTicks) ;
}

/***************************************************************************//**
 * @brief  Main function
 ******************************************************************************/
int main(void)
{
  /* Chip errata */
  CHIP_Init();

  /* If first word of user data page is non-zero, enable Energy Profiler trace */
  BSP_TraceProfilerSetup();

  /* Setup SysTick Timer for 1 msec interrupts  */
  if (SysTick_Config(CMU_ClockFreqGet(cmuClock_CORE) / 1000)) {
    while (1) ;
  }

  GPIO_PinModeSet(gpioPortD, 1, gpioModePushPull, 0);
  GPIO_PinModeSet(gpioPortD, 2, gpioModePushPull, 1);
  GPIO_PinModeSet(BUTTON_PORT, BUTTON_PIN, gpioModeInput, 0);
  GPIO_PinModeSet(BUZZER_PORT, BUZZER_PIN, gpioModePushPull, 0);
  puts("Hello world!");

//  /* Initialize LED driver */
//  BSP_LedsInit();
//  BSP_LedSet(0);
//
//  /* Infinite blink loop */
  while (1) {
//    BSP_LedToggle(0);
//    BSP_LedToggle(1);
	  bool live_button_state = GPIO_PinInGet(BUTTON_PORT, BUTTON_PIN);

	  if(live_button_state == 1) {
		  GPIO_PinModeSet(BUZZER_PORT, BUZZER_PIN, gpioModePushPull, 1);
		  GPIO_PinModeSet(gpioPortE, 2, gpioModePushPull, 1);
		  Delay(2000);
	  }
	  else {
		  GPIO_PinModeSet(BUZZER_PORT, BUZZER_PIN, gpioModePushPull, 0);
		  GPIO_PinModeSet(gpioPortE, 2, gpioModePushPull, 0);
	  }
    Delay(300);
  }

}