Tugas Pendahuluan 1 - Modul 2




Tugas Pendahuluan 1 Modul 2
(Percobaan 3 Kondisi 1)

1. Prosedur [Kembali]

1. Buka proteus dan siap kan software STM32CubeIDE
2. Buat rangkaian dan sambungkan komponen sesuai kondisi di proteus
3. Untuk software STM32CubeIDE Konfigurasi pin GPIO 
4. Cocokkan kode program sesuai kondisi
5. Masukkan program ke proteus
6. klik run di proteus

2. Hardware dan Diagram Blok [Kembali]
  • STM32F103C8

  • Buzzer

  • LDR
  • Transistor
  • motor dc
  • Button


  • Resistor
Resistor


Diagram blok

          +----------------+
          |      LDR         |
          +----------------+
                   |
                  v
          +------------------------+
          |  Pembagi Tegangan  |
          | (LDR + Resistor)     |
          +------------------------+
                   |
                  v
          +-----------------------+
          | Mikrokontroler       |
          | STM32F103C8       |
          | - Baca ADC            |
          | - Kontrol PWM      |
          +----------------------+
            |            |
     (PWM ke Motor) (Sinyal ke Buzzer)
             |            |
            v            v
    +----------------+ +------------------+
    | Transistor BD139| |     Buzzer     |
    +----------------+ +--------------=--+
             |
            v
    +-----------------+
    |    Motor DC    |
    +-----------------+
             |
            v
    +-------------------+
    |  Dioda Proteksi |
    +-------------------+


3. Rangkaian Simulasi dan Prinsip Kerja [Kembali]

a. Rangkaian


b. Prinsip kerja

    Rangkaian ini menggunakan LDR dan resistor sebagai pembagi tegangan untuk mendeteksi intensitas cahaya. Tegangan dari pembagi ini dibaca oleh ADC di mikrokontroler STM32F103C8.

Prinsip kerjanya:

  • Saat nilai ADC < 1500 (cahaya terang atau kondisi tertentu):

    • Motor DC dikendalikan dengan PWM duty cycle 10% melalui transistor BD139, sehingga motor berputar lambat.

    • Buzzer aktif, berbunyi dengan frekuensi rendah.

  • Saat nilai ADC > 3000 (cahaya gelap atau kondisi tertentu):

    • Motor DC dikendalikan dengan PWM duty cycle 90%, sehingga motor berputar cepat.

    • Buzzer dimatikan.

Komponen pendukung:

  • Dioda dipasang paralel dengan motor untuk proteksi terhadap lonjakan tegangan (back EMF).

  • R2 berfungsi membatasi arus basis transistor BD139.

  • Buzzer dan motor dikendalikan langsung berdasarkan kondisi pembacaan ADC.


4. Flowchart dan Listing Program [Kembali]

a. flowchart



b. listing program

#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);

    // Threshold
    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);

        if (adc_val < THRESH_LOW)
        {
            // Motor 10% duty cycle
            __HAL_TIM_SET_COMPARE(&htim1, TIM_CHANNEL_1, 6553); // 10% dari 65535
            // Buzzer bunyi frekuensi rendah (sekitar 1kHz)
            __HAL_TIM_SET_AUTORELOAD(&htim2, 15999); // Untuk 1kHz
            __HAL_TIM_SET_COMPARE(&htim2, TIM_CHANNEL_3, 8000); // 50% duty cycle
        }
        else if (adc_val > THRESH_MID)
        {
            // Motor 90% duty cycle
            __HAL_TIM_SET_COMPARE(&htim1, TIM_CHANNEL_1, 58981); // 90% dari 65535
            // Buzzer mati
            __HAL_TIM_SET_COMPARE(&htim2, TIM_CHANNEL_3, 0);
        }
        else
        {
            // Jika di antara 1500–3000, motor dan buzzer mati
            __HAL_TIM_SET_COMPARE(&htim1, TIM_CHANNEL_1, 0);
            __HAL_TIM_SET_COMPARE(&htim2, TIM_CHANNEL_3, 0);
        }

        HAL_Delay(10);
    }
}

// ==== Berikut bagian inisialisasi (tidak banyak berubah) ====

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();

    // PB0 sebagai input (tidak dipakai di sini tapi diinisialisasi)
    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)
    {
    }
}


5. Kondisi [Kembali]

Buatlah rangkaian seperti gambar pada percobaan 3, Jika nilai potensiometer di bawah threshold 1500 maka motor DC berputar dengan duty cycle 10% dan buzzer berbunyi dengan frekuensi rendah; jika nilai di atas threshold 3000 maka motor DC berputar dengan duty cycle 90% dan buzzer mati

6. Video Simulasi [Kembali]


7. Download File [Kembali]
Simulasi  klik disini
Gambar Simulasi  klik disini
Video Simulasi   klik disini
Listing program klik disini


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 BAHAN PRESENTASI UNTUK MATA KULIAH  ELEKTRONIKA Oleh : Salma Salsabila 2210952002    Dosen Pengampu : Darwison, M.T. Darwison, 2010, ”TEORI...

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     BAHAN PRESENTASI UNTUK MATA KULIAH  ELEKTRONIKA Oleh : Salma Salsabila 2210952002    Dosen Pengampu : Darwison, M.T. Darwison, 2010, ”TEORI...