LAPORAN AKHIR
MODUL 3
LAPORAN AKHIR
1. Prosedur [kembali]
Prosedur Percobaan 3
Smart Entry Indicator UART (STM32F103C8 – STM32 NUCLEO G474RE
Siapkan alat dan bahan yang digunakan, yaitu STM32 NUCLEO G474RE, STM32 Bluepill (STM32F103C8), sensor PIR, breadboard, LED, resistor, dan kabel jumper.
Rangkai seluruh komponen sesuai dengan gambar rangkaian percobaan.
Hubungkan sensor PIR ke STM32 NUCLEO G474RE.
Hubungkan komunikasi UART antara STM32 NUCLEO G474RE dan STM32 Bluepill menggunakan pin TX dan RX secara silang (TX ke RX dan RX ke TX).
Hubungkan LED dan resistor pada STM32 Bluepill sebagai indikator keluaran.
Hubungkan kedua board STM32 ke komputer menggunakan kabel USB.
Buka software STM32CubeIDE, kemudian buat program untuk komunikasi UART pada kedua mikrokontroler.
STM32 NUCLEO G474RE berfungsi sebagai pengirim data dari sensor PIR.
STM32 Bluepill berfungsi sebagai penerima data dan pengontrol LED.
Lakukan konfigurasi UART pada kedua board dengan baud rate yang sama, misalnya 9600 bps, serta konfigurasi pin TX dan RX yang sesuai.
Upload program ke masing-masing mikrokontroler hingga proses compile dan flashing berhasil tanpa error.
Nyalakan rangkaian dan amati kondisi awal LED saat sensor PIR belum mendeteksi gerakan.
Gerakkan objek atau tangan di depan sensor PIR untuk mendeteksi adanya pergerakan.
Amati proses komunikasi UART antara kedua board. Ketika sensor PIR mendeteksi gerakan, data dikirim dari STM32 NUCLEO G474RE ke STM32 Bluepill sehingga LED menyala sebagai indikator adanya objek yang masuk.
Catat hasil pengamatan, seperti kondisi LED saat ada dan tidak ada gerakan, serta kestabilan komunikasi UART yang terjadi antara kedua mikrokontroler.
2. Hardware [kembali]
a) STM32F103C8
b) STM32 NUCLEO G474RE
c) LED
d) PIR Sensor
e) Resistor
3. Rangkaian Simulasi dan Prinsip Kerja [kembali]
Prinsip Kerja:
Prinsip kerja rangkaian Smart Entry Indicator dimulai ketika sistem dinyalakan dan kedua mikrokontroler melakukan inisialisasi komunikasi UART serta konfigurasi pin input dan output. Sensor PIR berfungsi untuk mendeteksi adanya gerakan atau keberadaan objek di area pengawasan. Ketika sensor PIR mendeteksi gerakan, sensor akan mengirimkan sinyal digital ke STM32 NUCLEO G474RE sebagai mikrokontroler pengirim data. Selanjutnya STM32 NUCLEO G474RE mengirimkan data melalui komunikasi UART ke STM32F103C8 Bluepill sebagai mikrokontroler penerima. Setelah data diterima, STM32 Bluepill memproses data tersebut dan memberikan keluaran berupa menyalanya LED sebagai indikator bahwa terdapat objek atau gerakan yang terdeteksi. Jika tidak ada gerakan yang terdeteksi oleh sensor PIR, maka data tidak dikirim atau dikirim dalam kondisi logika rendah sehingga LED tetap mati. Proses ini berlangsung secara terus-menerus selama sistem bekerja sehingga sistem dapat melakukan monitoring secara real-time.
4. Flowchart dan Listing Program [kembali]
Listing Program :
main c nucleo:
/* USER CODE BEGIN Header */
/**
******************************************************************************
* @file : main.c
* @brief : Main program body
******************************************************************************
* @attention
*
* Copyright (c) 2026 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"
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
/* USER CODE END Includes */
/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */
/* USER CODE END PTD */
/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
/* USER CODE END PD */
/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */
/* USER CODE END PM */
/* Private variables ---------------------------------------------------------*/
COM_InitTypeDef BspCOMInit;
UART_HandleTypeDef huart1;
/* USER CODE BEGIN PV */
uint8_t pir_state;
uint8_t data;
/* USER CODE END PV */
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_USART1_UART_Init(void);
/* USER CODE BEGIN PFP */
/* USER CODE END PFP */
/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
/* USER CODE END 0 */
/**
* @brief The application entry point.
* @retval int
*/
int main(void)
{
/* USER CODE BEGIN 1 */
/* USER CODE END 1 */
/* MCU Configuration--------------------------------------------------------*/
/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
HAL_Init();
/* USER CODE BEGIN Init */
/* USER CODE END Init */
/* Configure the system clock */
SystemClock_Config();
/* USER CODE BEGIN SysInit */
/* USER CODE END SysInit */
/* Initialize all configured peripherals */
MX_GPIO_Init();
MX_USART1_UART_Init();
/* USER CODE BEGIN 2 */
/* USER CODE END 2 */
/* Initialize led */
BSP_LED_Init(LED_GREEN);
/* Initialize USER push-button, will be used to trigger an interrupt each time it's pressed.*/
BSP_PB_Init(BUTTON_USER, BUTTON_MODE_EXTI);
/* Initialize COM1 port (115200, 8 bits (7-bit data + 1 stop bit), no parity */
BspCOMInit.BaudRate = 115200;
BspCOMInit.WordLength = COM_WORDLENGTH_8B;
BspCOMInit.StopBits = COM_STOPBITS_1;
BspCOMInit.Parity = COM_PARITY_NONE;
BspCOMInit.HwFlowCtl = COM_HWCONTROL_NONE;
if (BSP_COM_Init(COM1, &BspCOMInit) != BSP_ERROR_NONE)
{
Error_Handler();
}
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
pir_state = HAL_GPIO_ReadPin(GPIOA, GPIO_PIN_0);
if (pir_state == GPIO_PIN_SET)
data = '1';
else
data = '0';
HAL_UART_Transmit(&huart1, &data, 1, 100);
HAL_Delay(500);
}
}
/**
* @brief System Clock Configuration
* @retval None
*/
void SystemClock_Config(void)
{
RCC_OscInitTypeDef RCC_OscInitStruct = {0};
RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
/** Configure the main internal regulator output voltage
*/
HAL_PWREx_ControlVoltageScaling(PWR_REGULATOR_VOLTAGE_SCALE1_BOOST);
/** Initializes the RCC Oscillators according to the specified parameters
* in the RCC_OscInitTypeDef structure.
*/
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
RCC_OscInitStruct.HSIState = RCC_HSI_ON;
RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI;
RCC_OscInitStruct.PLL.PLLM = RCC_PLLM_DIV4;
RCC_OscInitStruct.PLL.PLLN = 85;
RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
RCC_OscInitStruct.PLL.PLLQ = RCC_PLLQ_DIV2;
RCC_OscInitStruct.PLL.PLLR = RCC_PLLR_DIV2;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
{
Error_Handler();
}
/** Initializes the CPU, AHB and APB buses clocks
*/
RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
|RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
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_4) != HAL_OK)
{
Error_Handler();
}
}
/**
* @brief USART1 Initialization Function
* @param None
* @retval None
*/
static void MX_USART1_UART_Init(void)
{
/* USER CODE BEGIN USART1_Init 0 */
/* USER CODE END USART1_Init 0 */
/* USER CODE BEGIN USART1_Init 1 */
/* USER CODE END USART1_Init 1 */
huart1.Instance = USART1;
huart1.Init.BaudRate = 9600;
huart1.Init.WordLength = UART_WORDLENGTH_8B;
huart1.Init.StopBits = UART_STOPBITS_1;
huart1.Init.Parity = UART_PARITY_NONE;
huart1.Init.Mode = UART_MODE_TX_RX;
huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE;
huart1.Init.OverSampling = UART_OVERSAMPLING_16;
huart1.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE;
huart1.Init.ClockPrescaler = UART_PRESCALER_DIV1;
huart1.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
if (HAL_UART_Init(&huart1) != HAL_OK)
{
Error_Handler();
}
if (HAL_UARTEx_SetTxFifoThreshold(&huart1, UART_TXFIFO_THRESHOLD_1_8) != HAL_OK)
{
Error_Handler();
}
if (HAL_UARTEx_SetRxFifoThreshold(&huart1, UART_RXFIFO_THRESHOLD_1_8) != HAL_OK)
{
Error_Handler();
}
if (HAL_UARTEx_DisableFifoMode(&huart1) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN USART1_Init 2 */
/* USER CODE END USART1_Init 2 */
}
/**
* @brief GPIO Initialization Function
* @param None
* @retval None
*/
static void MX_GPIO_Init(void)
{
GPIO_InitTypeDef GPIO_InitStruct = {0};
/* USER CODE BEGIN MX_GPIO_Init_1 */
/* USER CODE END MX_GPIO_Init_1 */
/* GPIO Ports Clock Enable */
__HAL_RCC_GPIOC_CLK_ENABLE();
__HAL_RCC_GPIOF_CLK_ENABLE();
__HAL_RCC_GPIOA_CLK_ENABLE();
__HAL_RCC_GPIOB_CLK_ENABLE();
/*Configure GPIO pin : PA0 */
GPIO_InitStruct.Pin = GPIO_PIN_0;
GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
GPIO_InitStruct.Pull = GPIO_NOPULL;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
/* USER CODE BEGIN MX_GPIO_Init_2 */
/* USER CODE END MX_GPIO_Init_2 */
}
/* USER CODE BEGIN 4 */
/* USER CODE END 4 */
/**
* @brief This function is executed in case of error occurrence.
* @retval None
*/
void Error_Handler(void)
{
/* USER CODE BEGIN Error_Handler_Debug */
/* User can add his own implementation to report the HAL error return state */
__disable_irq();
while (1)
{
}
/* USER CODE END Error_Handler_Debug */
}
#ifdef USE_FULL_ASSERT
/**
* @brief Reports the name of the source file and the source line number
* where the assert_param error has occurred.
* @param file: pointer to the source file name
* @param line: assert_param error line source number
* @retval None
*/
void assert_failed(uint8_t *file, uint32_t line)
{
/* USER CODE BEGIN 6 */
/* User can add his own implementation to report the file name and line number,
ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
/* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */
5. Video Demo [kembali]
6. Kondisi [kembali]
7. Analisa [kembali]
8. Link Download [kembali]
- Datasheet STM32F103C8 [Download]
- Datasheet STM32 NUCLEO-G474RE [Download]
- Datasheet PIR Sensor [Download]
- Datasheet LED [Download]
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