- Pahami terlebih dahulu kondisi yang akan digunakan
- Buka software Proteus 8.17
- Persiapkan alat dan bahan
- Buat rangkaian sesuai dengan kondisi dan modul
- Buka software STM32Cube IDE
- Setelah membuka software, pilih perangkat STM32F103C8T6
- Sesuaikan konfigurasi pin sesuai dengan rangkaian proteus
- Buat kode program untuk mengoperasikan rangkaian tersebut sesuai dengan kondisi
- Konfigurasi kan program dengan software Proteus
- Jalankan simulasi rangkaian.
- Proses selesai
2. Hardware dan Diagram Blok[Kembali]
Hardware
3. Rangkaian Simulasi dan Prinsip Kerja[Kembali]
4. Flowchart dan Listing Program[Kembali]
#include "stm32f1xx_hal.h"
/* ================= HANDLE ================= */
ADC_HandleTypeDef hadc1;
/* ================= VARIABLE ================= */
uint32_t adcValue = 0;
uint32_t filteredValue = 0;
uint8_t beatDetected = 0;
uint32_t BPM = 0;
uint32_t lastBeatTime = 0;
uint32_t interval = 0;
uint8_t buzzerOff = 0;
/* ================= FILTER ================= */
#define FILTER_SIZE 10
uint16_t buffer[FILTER_SIZE];
uint8_t indexBuf = 0;
uint16_t moving_average(uint16_t val)
{
buffer[indexBuf++] = val;
if(indexBuf >= FILTER_SIZE) indexBuf = 0;
uint32_t sum = 0;
for(int i=0;i<FILTER_SIZE;i++) sum += buffer[i];
return sum / FILTER_SIZE;
}
/* ================= LED ================= */
void LED_Hijau() {
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_0, GPIO_PIN_SET);
}
void LED_Kuning() {
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_1, GPIO_PIN_SET);
}
void LED_Merah() {
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_10, GPIO_PIN_SET);
}
void LED_Mati() {
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_10, GPIO_PIN_RESET);
}
/* ================= BUZZER ================= */
void Buzzer_On() { HAL_GPIO_WritePin(GPIOB, GPIO_PIN_11, GPIO_PIN_SET); }
void Buzzer_Off() { HAL_GPIO_WritePin(GPIOB, GPIO_PIN_11, GPIO_PIN_RESET); }
/* ================= INTERRUPT ================= */
void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)
{
if(GPIO_Pin == GPIO_PIN_1) // PA1
{
buzzerOff = !buzzerOff;
}
}
/* ================= PROTOTYPE ================= */
void SystemClock_Config(void);
void MX_GPIO_Init(void);
void MX_ADC1_Init(void);
/* ================= MAIN ================= */
int main(void)
{
HAL_Init();
SystemClock_Config();
MX_GPIO_Init();
MX_ADC1_Init();
uint32_t baseline = 0;
while (1)
{
/* ==== BACA ADC ==== */
HAL_ADC_Start(&hadc1);
HAL_ADC_PollForConversion(&hadc1, 10);
adcValue = HAL_ADC_GetValue(&hadc1);
/* ==== FILTER ==== */
filteredValue = moving_average(adcValue);
/* ==== BASELINE (ADAPTIF) ==== */
baseline = (baseline * 9 + filteredValue) / 10;
uint32_t threshold = baseline + 50;
/* ==== DETEKSI DETAK + INTERVAL ==== */
if(filteredValue > threshold && beatDetected == 0)
{
beatDetected = 1;
uint32_t now = HAL_GetTick();
if(lastBeatTime != 0)
{
interval = now - lastBeatTime;
BPM = 60000 / interval;
}
lastBeatTime = now;
}
if(filteredValue < threshold)
{
beatDetected = 0;
}
/* ==== TIMEOUT (TIDAK ADA DETAK) ==== */
if(HAL_GetTick() - lastBeatTime > 2000)
{
BPM = 0;
}
/* ==== OUTPUT ==== */
if(BPM > 0)
{
if(BPM >30 && BPM < 60)
{
LED_Kuning();
Buzzer_Off();
buzzerOff = 0;
}
else if(BPM <= 80)
{
LED_Hijau();
Buzzer_Off();
buzzerOff = 0;
}
else
{
LED_Merah();
if(!buzzerOff)
Buzzer_On();
else
Buzzer_Off();
}
}
else
{
LED_Mati();
Buzzer_Off();
}
HAL_Delay(5);
}
}
/* ================= CLOCK ================= */
void SystemClock_Config(void)
{
RCC_OscInitTypeDef RCC_OscInitStruct = {0};
RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
RCC_OscInitStruct.HSIState = RCC_HSI_ON;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
HAL_RCC_OscConfig(&RCC_OscInitStruct);
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;
HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_0);
}
/* ================= ADC ================= */
void MX_ADC1_Init(void)
{
ADC_ChannelConfTypeDef sConfig = {0};
__HAL_RCC_ADC1_CLK_ENABLE();
hadc1.Instance = ADC1;
hadc1.Init.ScanConvMode = ADC_SCAN_DISABLE;
hadc1.Init.ContinuousConvMode = DISABLE;
hadc1.Init.ExternalTrigConv = ADC_SOFTWARE_START;
hadc1.Init.DataAlign = ADC_DATAALIGN_RIGHT;
hadc1.Init.NbrOfConversion = 1;
HAL_ADC_Init(&hadc1);
sConfig.Channel = ADC_CHANNEL_0;
sConfig.Rank = ADC_REGULAR_RANK_1;
sConfig.SamplingTime = ADC_SAMPLETIME_71CYCLES_5;
HAL_ADC_ConfigChannel(&hadc1, &sConfig);
}
/* ================= GPIO ================= */
void MX_GPIO_Init(void)
{
__HAL_RCC_GPIOA_CLK_ENABLE();
__HAL_RCC_GPIOB_CLK_ENABLE();
GPIO_InitTypeDef GPIO_InitStruct = {0};
/* PA0 = ADC */
GPIO_InitStruct.Pin = GPIO_PIN_0;
GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
/* PA1 = BUTTON */
GPIO_InitStruct.Pin = GPIO_PIN_1;
GPIO_InitStruct.Mode = GPIO_MODE_IT_FALLING;
GPIO_InitStruct.Pull = GPIO_PULLUP;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
HAL_NVIC_SetPriority(EXTI1_IRQn, 0, 0);
HAL_NVIC_EnableIRQ(EXTI1_IRQn);
/* LED + BUZZER */
GPIO_InitStruct.Pin = GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_10 | GPIO_PIN_11;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_10 | GPIO_PIN_11, GPIO_PIN_RESET);
}
6. Kondisi[Kembali]
Buatlah rangkaian seperti pada gambar percobaan 1 dengan kondisi sensor heartbear mendeteksi perubahan dari keadaan senang ke sedih sehingga LED berubah dari merah menjadi biru
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