#include "main.h"
#include "buzzer.h"
#include "hs_uart5.h"

#define COUNTERCLOCK 1000000

TIM_HandleTypeDef htim2;

enum notes

{
  C4 = 26163, 
  D4 = 29366,
  E4 = 32963,
  F4 = 34923,
  G4 = 39200,
  A4 = 44000,
  B4 = 49388,
  C5 = 52325 
};

enum notes on[] = { C4,C4,C4,C4,C4 };
enum notes low[] = { E4,C4 };

static void Buzzer_Pin_Init(void)
{
  GPIO_InitTypeDef GPIO_InitStruct = {0};

  __HAL_RCC_GPIOA_CLK_ENABLE();

  /*Configure GPIO pin Output Level */
  HAL_GPIO_WritePin(GPIOA, GPIO_PIN_0, GPIO_PIN_RESET);
  
  /*Configure GPIO pins : PA0 */   // Buzzezr Control
  GPIO_InitStruct.Pin =  GPIO_PIN_0 ;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  GPIO_InitStruct.Pull = GPIO_PULLDOWN;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
  HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
}

static void MX_TIM2_Init(void)  // Buzzer PWM Timer 
{
  /* USER CODE BEGIN TIM2_Init 0 */

  /* USER CODE END TIM2_Init 0 */

  TIM_ClockConfigTypeDef sClockSourceConfig = {0};
  TIM_MasterConfigTypeDef sMasterConfig = {0};
  TIM_OC_InitTypeDef sConfigOC = {0};
  
  /* USER CODE BEGIN TIM2_Init 1 */

  /* USER CODE END TIM2_Init 1 */
  htim2.Instance = TIM2;
  htim2.Init.Prescaler = 47;
  htim2.Init.CounterMode = TIM_COUNTERMODE_UP;
  htim2.Init.Period = 999;
  htim2.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
  htim2.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
  if (HAL_TIM_Base_Init(&htim2) != HAL_OK)
  {
    Error_Handler();
  }
  sClockSourceConfig.ClockSource = TIM_CLOCKSOURCE_INTERNAL;
  if (HAL_TIM_ConfigClockSource(&htim2, &sClockSourceConfig) != HAL_OK)
  {
    Error_Handler();
  }
  if (HAL_TIM_PWM_Init(&htim2) != HAL_OK)
  {
    Error_Handler();
  }
  sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
  sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
  if (HAL_TIMEx_MasterConfigSynchronization(&htim2, &sMasterConfig) != HAL_OK)
  {
    Error_Handler();
  }
  sConfigOC.OCMode = TIM_OCMODE_PWM1;
  sConfigOC.Pulse = 499;
  sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH;
  sConfigOC.OCFastMode = TIM_OCFAST_DISABLE;
  if (HAL_TIM_PWM_ConfigChannel(&htim2, &sConfigOC, TIM_CHANNEL_1) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN TIM2_Init 2 */

  /* USER CODE END TIM2_Init 2 */
  HAL_TIM_MspPostInit(&htim2);

}

void Buzzer_Init()
{
  Buzzer_Pin_Init();
  MX_TIM2_Init();
}

void Buzzer_ON()
{
  for (uint8_t i = 0; i < sizeof(on) / sizeof(enum notes); i++)
  {
    __HAL_TIM_SET_AUTORELOAD(&htim2, (int)((COUNTERCLOCK / on[i] * 100)-1));
    __HAL_TIM_SET_COMPARE(&htim2, TIM_CHANNEL_1, (COUNTERCLOCK / on[i] * 100)-1 / 2);
    HAL_TIM_PWM_Start(&htim2, TIM_CHANNEL_1);  //BUZZER
    HAL_Delay (300);
    HAL_TIM_PWM_Stop (&htim2, TIM_CHANNEL_1);
    HAL_Delay (150);
  }
}

void Buzzer_Low()
{
  for(int count=0; count<3; count++)
  {
    for (uint8_t i = 0; i < sizeof(low) / sizeof(enum notes); i++)
    {
      __HAL_TIM_SET_AUTORELOAD(&htim2, (int)((COUNTERCLOCK / low[i] * 100)-1));
      __HAL_TIM_SET_COMPARE(&htim2, TIM_CHANNEL_1, (COUNTERCLOCK / on[i] * 100)-1 / 2);
      HAL_TIM_PWM_Start(&htim2, TIM_CHANNEL_1);  //BUZZER
      HAL_Delay (300);
      HAL_TIM_PWM_Stop (&htim2, TIM_CHANNEL_1);
      HAL_Delay (150);
    }
  }
}