Tugas Pendahuluan 2




Tugas Pendahuluan 2 Modul 2
(Percobaan 3 Kondisi 2)

1. Kondisi [Kembali]

Percobaan 3 kondisi 2
Buatlah rangkaian seperti gambar pada percobaan 3, Jika nilai potensiometer di bawah threshold 1500 maka motor DC berputar dengan duty cycle 30% dan buzzer berbunyi dengan frekuensi tinggi; jika nilai di atas threshold 3000 maka motor DC berputar dengan duty cycle 80% dan buzzer mati.

2. Gambar Rangkaian Simulasi [Kembali]



listing program :

int main(void)
{
  HAL_Init();
  SystemClock_Config();
  MX_GPIO_Init();
  MX_ADC1_Init();
  MX_TIM1_Init();
  MX_TIM2_Init();

  HAL_TIM_PWM_Start(&htim1, TIM_CHANNEL_1); // Motor PWM
  HAL_TIM_PWM_Start(&htim2, TIM_CHANNEL_3); // Buzzer PWM
  HAL_ADC_Start(&hadc1);

  uint8_t buzzer_enabled = 1;
  uint32_t last_buzzer_change = 0;
  uint8_t buzzer_freq_index = 0;

  const uint32_t buzzer_periods[] = {143999, 71999, 47999}; // Frekuensi berbeda

  // Threshold (dari rendah → sedang → tinggi)
  const uint16_t THRESH_LOW = 1500;
  const uint16_t THRESH_MID = 3000;
while (1)
  {
    HAL_ADC_Start(&hadc1);
    HAL_ADC_PollForConversion(&hadc1, 10);
    uint32_t adc_val = HAL_ADC_GetValue(&hadc1);

    // --- Motor Control ---
    if (adc_val < THRESH_LOW)
    {
      __HAL_TIM_SET_COMPARE(&htim1, TIM_CHANNEL_1, 19660); // Lambat
    }
    else if (adc_val < THRESH_MID)
    {
      __HAL_TIM_SET_COMPARE(&htim1, TIM_CHANNEL_1,52428); // Sedang
    }
    else
    {
      __HAL_TIM_SET_COMPARE(&htim1, TIM_CHANNEL_1, 1000); // Cepat
    }

    // --- Buzzer Logic ---
    if (adc_val < THRESH_LOW && buzzer_enabled)
    {
      // Ubah frekuensi buzzer setiap 500ms
      if (HAL_GetTick() - last_buzzer_change >= 500)
      {
        last_buzzer_change = HAL_GetTick();
buzzer_freq_index = (buzzer_freq_index + 1) % 3;

        uint32_t period = buzzer_periods[buzzer_freq_index];
        __HAL_TIM_SET_AUTORELOAD(&htim2, period);
        __HAL_TIM_SET_COMPARE(&htim2, TIM_CHANNEL_3, period / 2); // 50% duty
      }
    }
    else
    {
      __HAL_TIM_SET_COMPARE(&htim2, TIM_CHANNEL_3, 0); // Matikan buzzer
    }

    // --- Button Logic (PB0 ditekan = nonaktifkan buzzer) ---
    if (HAL_GPIO_ReadPin(GPIOB, GPIO_PIN_0) == GPIO_PIN_SET)
    {
      buzzer_enabled = 0;
      __HAL_TIM_SET_COMPARE(&htim2, TIM_CHANNEL_3, 0); // Paksa matikan buzzer
    }

    HAL_Delay(10);
  }
}


void SystemClock_Config(void)
{
  RCC_OscInitTypeDef RCC_OscInitStruct = {0};
RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
  RCC_PeriphCLKInitTypeDef PeriphClkInit = {0};

  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
  RCC_OscInitStruct.HSIState = RCC_HSI_ON;
  RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
  {
    Error_Handler();
  }

  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
                              |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_HSI;
  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;

  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_0) != HAL_OK)
  {
    Error_Handler();
  }
  PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_ADC;
  PeriphClkInit.AdcClockSelection = RCC_ADCPCLK2_DIV2;
  if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
{
    Error_Handler();
  }
}

static void MX_ADC1_Init(void)
{

  ADC_ChannelConfTypeDef sConfig = {0};

  hadc1.Instance = ADC1;
  hadc1.Init.ScanConvMode = ADC_SCAN_DISABLE;
  hadc1.Init.ContinuousConvMode = DISABLE;
  hadc1.Init.DiscontinuousConvMode = DISABLE;
  hadc1.Init.ExternalTrigConv = ADC_SOFTWARE_START;
  hadc1.Init.DataAlign = ADC_DATAALIGN_RIGHT;
  hadc1.Init.NbrOfConversion = 1;
  if (HAL_ADC_Init(&hadc1) != HAL_OK)
  {
    Error_Handler();
  }

  sConfig.Channel = ADC_CHANNEL_0;
  sConfig.Rank = ADC_REGULAR_RANK_1;
  sConfig.SamplingTime = ADC_SAMPLETIME_1CYCLE_5;
  if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK)
  {
Error_Handler();
  }

}

static void MX_TIM1_Init(void)
{

  TIM_MasterConfigTypeDef sMasterConfig = {0};
  TIM_OC_InitTypeDef sConfigOC = {0};
  TIM_BreakDeadTimeConfigTypeDef sBreakDeadTimeConfig = {0};

  htim1.Instance = TIM1;
  htim1.Init.Prescaler = 0;
  htim1.Init.CounterMode = TIM_COUNTERMODE_UP;
  htim1.Init.Period = 65535;
  htim1.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
  htim1.Init.RepetitionCounter = 0;
  htim1.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
  if (HAL_TIM_PWM_Init(&htim1) != HAL_OK)
  {
    Error_Handler();
  }
  sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
  sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
  if (HAL_TIMEx_MasterConfigSynchronization(&htim1, &sMasterConfig) != HAL_OK)
  {
Error_Handler();
  }
  sConfigOC.OCMode = TIM_OCMODE_PWM1;
  sConfigOC.Pulse = 0;
  sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH;
  sConfigOC.OCNPolarity = TIM_OCNPOLARITY_HIGH;
  sConfigOC.OCFastMode = TIM_OCFAST_DISABLE;
  sConfigOC.OCIdleState = TIM_OCIDLESTATE_RESET;
  sConfigOC.OCNIdleState = TIM_OCNIDLESTATE_RESET;
  if (HAL_TIM_PWM_ConfigChannel(&htim1, &sConfigOC, TIM_CHANNEL_1) != HAL_OK)
  {
    Error_Handler();
  }
  sBreakDeadTimeConfig.OffStateRunMode = TIM_OSSR_DISABLE;
  sBreakDeadTimeConfig.OffStateIDLEMode = TIM_OSSI_DISABLE;
  sBreakDeadTimeConfig.LockLevel = TIM_LOCKLEVEL_OFF;
  sBreakDeadTimeConfig.DeadTime = 0;
  sBreakDeadTimeConfig.BreakState = TIM_BREAK_DISABLE;
  sBreakDeadTimeConfig.BreakPolarity = TIM_BREAKPOLARITY_HIGH;
  sBreakDeadTimeConfig.AutomaticOutput = TIM_AUTOMATICOUTPUT_DISABLE;
  if (HAL_TIMEx_ConfigBreakDeadTime(&htim1, &sBreakDeadTimeConfig) != HAL_OK)
  {
    Error_Handler();
  }

  HAL_TIM_MspPostInit(&htim1);
}

static void MX_TIM2_Init(void)
{

  TIM_MasterConfigTypeDef sMasterConfig = {0};
  TIM_OC_InitTypeDef sConfigOC = {0};


  htim2.Instance = TIM2;
  htim2.Init.Prescaler = 0;
  htim2.Init.CounterMode = TIM_COUNTERMODE_UP;
  htim2.Init.Period = 65535;
  htim2.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
  htim2.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
  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 = 0;
sConfigOC.OCMode = TIM_OCMODE_PWM1;
  sConfigOC.Pulse = 0;
  sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH;
  sConfigOC.OCFastMode = TIM_OCFAST_DISABLE;
  if (HAL_TIM_PWM_ConfigChannel(&htim2, &sConfigOC, TIM_CHANNEL_3) != HAL_OK)
  {
    Error_Handler();
  }

  HAL_TIM_MspPostInit(&htim2);

}

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

  __HAL_RCC_GPIOD_CLK_ENABLE();
  __HAL_RCC_GPIOA_CLK_ENABLE();
  __HAL_RCC_GPIOB_CLK_ENABLE();

  /*Configure GPIO pin : PB0 */
  GPIO_InitStruct.Pin = GPIO_PIN_0;
  GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
  GPIO_InitStruct.Pull = GPIO_PULLUP;
  HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
}

void Error_Handler(void)
{

  __disable_irq();
  while (1)
  {
  }

}

#ifdef  USE_FULL_ASSERT
void assert_failed(uint8_t *file, uint32_t line)
{

}
#endif /* USE_FULL_ASSERT */
/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file           : main.c
  * @brief          : Main program body
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2025 STMicroelectronics.
  * All rights reserved.
  *
  * This software is licensed under terms that can be found in the LICENSE file
  * in the root directory of this software component.
  * If no LICENSE file comes with this software, it is provided AS-IS.
  *
  ******************************************************************************
  */
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"

ADC_HandleTypeDef hadc1;
TIM_HandleTypeDef htim1;
TIM_HandleTypeDef htim2;

void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_ADC1_Init(void);
static void MX_TIM1_Init(void);
static void MX_TIM2_Init(void);

int main(void)
{
  HAL_Init();
  SystemClock_Config();
  MX_GPIO_Init();
  MX_ADC1_Init();
  MX_TIM1_Init();
  MX_TIM2_Init();

  HAL_TIM_PWM_Start(&htim1, TIM_CHANNEL_1); // Motor PWM
  HAL_TIM_PWM_Start(&htim2, TIM_CHANNEL_3); // Buzzer PWM
  HAL_ADC_Start(&hadc1);

  uint8_t buzzer_enabled = 1;
  uint32_t last_buzzer_change = 0;
  uint8_t buzzer_freq_index = 0;

  const uint32_t buzzer_periods[] = {143999, 71999, 47999}; // Frekuensi berbeda

  // Threshold (dari rendah → sedang → tinggi)
  const uint16_t THRESH_LOW = 1500;
  const uint16_t THRESH_MID = 3000;

  while (1)
  {
    HAL_ADC_Start(&hadc1);
    HAL_ADC_PollForConversion(&hadc1, 10);
    uint32_t adc_val = HAL_ADC_GetValue(&hadc1);

    // --- Motor Control ---
    if (adc_val < THRESH_LOW)
    {
      __HAL_TIM_SET_COMPARE(&htim1, TIM_CHANNEL_1, 19660); // Lambat
    }
    else if (adc_val < THRESH_MID)
    {
      __HAL_TIM_SET_COMPARE(&htim1, TIM_CHANNEL_1,52428); // Sedang
    }
    else
    {
      __HAL_TIM_SET_COMPARE(&htim1, TIM_CHANNEL_1, 1000); // Cepat
    }

    // --- Buzzer Logic ---
    if (adc_val < THRESH_LOW && buzzer_enabled)
    {
      // Ubah frekuensi buzzer setiap 500ms
      if (HAL_GetTick() - last_buzzer_change >= 500)
      {
        last_buzzer_change = HAL_GetTick();
        buzzer_freq_index = (buzzer_freq_index + 1) % 3;

        uint32_t period = buzzer_periods[buzzer_freq_index];
        __HAL_TIM_SET_AUTORELOAD(&htim2, period);
        __HAL_TIM_SET_COMPARE(&htim2, TIM_CHANNEL_3, period / 2); // 50% duty
      }
    }
    else
    {
      __HAL_TIM_SET_COMPARE(&htim2, TIM_CHANNEL_3, 0); // Matikan buzzer
    }

    // --- Button Logic (PB0 ditekan = nonaktifkan buzzer) ---
    if (HAL_GPIO_ReadPin(GPIOB, GPIO_PIN_0) == GPIO_PIN_SET)
    {
      buzzer_enabled = 0;
      __HAL_TIM_SET_COMPARE(&htim2, TIM_CHANNEL_3, 0); // Paksa matikan buzzer
    }

    HAL_Delay(10);
  }
}


void SystemClock_Config(void)
{
  RCC_OscInitTypeDef RCC_OscInitStruct = {0};
  RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
  RCC_PeriphCLKInitTypeDef PeriphClkInit = {0};

  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
  RCC_OscInitStruct.HSIState = RCC_HSI_ON;
  RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
  {
    Error_Handler();
  }

  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
                              |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_HSI;
  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;

  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_0) != HAL_OK)
  {
    Error_Handler();
  }
  PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_ADC;
  PeriphClkInit.AdcClockSelection = RCC_ADCPCLK2_DIV2;
  if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
  {
    Error_Handler();
  }
}

static void MX_ADC1_Init(void)
{

  ADC_ChannelConfTypeDef sConfig = {0};

  hadc1.Instance = ADC1;
  hadc1.Init.ScanConvMode = ADC_SCAN_DISABLE;
  hadc1.Init.ContinuousConvMode = DISABLE;
  hadc1.Init.DiscontinuousConvMode = DISABLE;
  hadc1.Init.ExternalTrigConv = ADC_SOFTWARE_START;
  hadc1.Init.DataAlign = ADC_DATAALIGN_RIGHT;
  hadc1.Init.NbrOfConversion = 1;
  if (HAL_ADC_Init(&hadc1) != HAL_OK)
  {
    Error_Handler();
  }

  sConfig.Channel = ADC_CHANNEL_0;
  sConfig.Rank = ADC_REGULAR_RANK_1;
  sConfig.SamplingTime = ADC_SAMPLETIME_1CYCLE_5;
  if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK)
  {
    Error_Handler();
  }

}

static void MX_TIM1_Init(void)
{

  TIM_MasterConfigTypeDef sMasterConfig = {0};
  TIM_OC_InitTypeDef sConfigOC = {0};
  TIM_BreakDeadTimeConfigTypeDef sBreakDeadTimeConfig = {0};

  htim1.Instance = TIM1;
  htim1.Init.Prescaler = 0;
  htim1.Init.CounterMode = TIM_COUNTERMODE_UP;
  htim1.Init.Period = 65535;
  htim1.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
  htim1.Init.RepetitionCounter = 0;
  htim1.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
  if (HAL_TIM_PWM_Init(&htim1) != HAL_OK)
  {
    Error_Handler();
  }
  sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
  sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
  if (HAL_TIMEx_MasterConfigSynchronization(&htim1, &sMasterConfig) != HAL_OK)
  {
    Error_Handler();
  }
  sConfigOC.OCMode = TIM_OCMODE_PWM1;
  sConfigOC.Pulse = 0;
  sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH;
  sConfigOC.OCNPolarity = TIM_OCNPOLARITY_HIGH;
  sConfigOC.OCFastMode = TIM_OCFAST_DISABLE;
  sConfigOC.OCIdleState = TIM_OCIDLESTATE_RESET;
  sConfigOC.OCNIdleState = TIM_OCNIDLESTATE_RESET;
  if (HAL_TIM_PWM_ConfigChannel(&htim1, &sConfigOC, TIM_CHANNEL_1) != HAL_OK)
  {
    Error_Handler();
  }
  sBreakDeadTimeConfig.OffStateRunMode = TIM_OSSR_DISABLE;
  sBreakDeadTimeConfig.OffStateIDLEMode = TIM_OSSI_DISABLE;
  sBreakDeadTimeConfig.LockLevel = TIM_LOCKLEVEL_OFF;
  sBreakDeadTimeConfig.DeadTime = 0;
  sBreakDeadTimeConfig.BreakState = TIM_BREAK_DISABLE;
  sBreakDeadTimeConfig.BreakPolarity = TIM_BREAKPOLARITY_HIGH;
  sBreakDeadTimeConfig.AutomaticOutput = TIM_AUTOMATICOUTPUT_DISABLE;
  if (HAL_TIMEx_ConfigBreakDeadTime(&htim1, &sBreakDeadTimeConfig) != HAL_OK)
  {
    Error_Handler();
  }

  HAL_TIM_MspPostInit(&htim1);

}

static void MX_TIM2_Init(void)
{

  TIM_MasterConfigTypeDef sMasterConfig = {0};
  TIM_OC_InitTypeDef sConfigOC = {0};


  htim2.Instance = TIM2;
  htim2.Init.Prescaler = 0;
  htim2.Init.CounterMode = TIM_COUNTERMODE_UP;
  htim2.Init.Period = 65535;
  htim2.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
  htim2.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
  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 = 0;
  sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH;
  sConfigOC.OCFastMode = TIM_OCFAST_DISABLE;
  if (HAL_TIM_PWM_ConfigChannel(&htim2, &sConfigOC, TIM_CHANNEL_3) != HAL_OK)
  {
    Error_Handler();
  }

  HAL_TIM_MspPostInit(&htim2);

}

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

  __HAL_RCC_GPIOD_CLK_ENABLE();
  __HAL_RCC_GPIOA_CLK_ENABLE();
  __HAL_RCC_GPIOB_CLK_ENABLE();

  /*Configure GPIO pin : PB0 */
  GPIO_InitStruct.Pin = GPIO_PIN_0;
  GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
  GPIO_InitStruct.Pull = GPIO_PULLUP;
  HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);

}

void Error_Handler(void)
{

  __disable_irq();
  while (1)
  {
  }

}

#ifdef  USE_FULL_ASSERT
void assert_failed(uint8_t *file, uint32_t line)
{

}
#endif /* USE_FULL_ASSERT */


3. Video Simulasi [Kembali]




4. Prinsip Kerja Rangkaian [Kembali]

Rangkaian pada percobaan 3 kondisi 2 yaitu buatlah rangkaian seperti gambar pada percobaan 3, Jika nilai potensiometer di bawah threshold 1500 maka motor DC berputar dengan duty cycle 30% dan buzzer berbunyi dengan frekuensi tinggi; jika nilai di atas threshold 3000 maka motor DC berputar dengan duty cycle 80% dan buzzer mati. yang ditampilkan adalah sistem pendeteksi cahaya berbasis mikrokontroler STM32. Sensor LDR (Light Dependent Resistor) digunakan untuk mengukur intensitas cahaya di lingkungan sekitar. LDR ini membentuk pembagi tegangan bersama resistor R1, di mana tegangan di tengah pembagi dibaca oleh pin ADC dari mikrokontroler (U1). Jika intensitas cahaya rendah (gelap), mikrokontroler akan mengaktifkan buzzer (BUZ1) sebagai alarm.

Untuk menggerakkan buzzer, sinyal kontrol dari mikrokontroler digunakan untuk mengendalikan transistor Q1 (BD139), yang berfungsi sebagai saklar elektronik. Ketika transistor aktif, arus mengalir ke buzzer dan buzzer berbunyi. Dioda D1 digunakan untuk melindungi transistor dari tegangan balik induktif yang dihasilkan oleh buzzer.

5. Link Download [Kembali]
    
    Download Simulasi Rangkaian [klik disini]
    










 

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