#include "stm32f1xx_hal.h"
// =====================
// VARIABEL GLOBAL
// =====================
uint8_t system_enable = 0;
uint8_t touch_last = 0;
uint8_t pir_first_trigger = 1;
// =====================
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
void Error_Handler(void);
// =====================
int main(void)
{
HAL_Init();
SystemClock_Config();
MX_GPIO_Init();
while (1)
{
uint8_t pir_now = HAL_GPIO_ReadPin(GPIOA, GPIO_PIN_0);
uint8_t touch_now = HAL_GPIO_ReadPin(GPIOA, GPIO_PIN_1);
// =========================
// TOUCH → TOGGLE SYSTEM
// =========================
if (touch_now == GPIO_PIN_SET && touch_last == GPIO_PIN_RESET)
{
system_enable = !system_enable;
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_1, GPIO_PIN_SET);
HAL_Delay(100);
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_1, GPIO_PIN_RESET);
HAL_Delay(200);
}
touch_last = touch_now;
// =========================
// PIR TRIGGER (BUZZER SEKALI)
// =========================
if (pir_now == GPIO_PIN_SET && pir_first_trigger)
{
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_1, GPIO_PIN_SET);
HAL_Delay(100);
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_1, GPIO_PIN_RESET);
pir_first_trigger = 0;
}
else if (pir_now == GPIO_PIN_RESET)
{
pir_first_trigger = 1;
}
// =========================
// LOGIKA LED (FIX SESUAI SOAL)
// =========================
uint8_t led_state = 0;
// 👉 KONDISI WAJIB (soal)
if (pir_now == GPIO_PIN_RESET && touch_now == GPIO_PIN_RESET && system_enable == 0)
{
led_state = 0; // LED mati
}
else if (pir_now == GPIO_PIN_SET)
{
led_state = 1; // PIR aktif
}
else if (system_enable)
{
led_state = 1; // mode manual
}
else
{
led_state = 0;
}
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_0,
led_state ? GPIO_PIN_SET : GPIO_PIN_RESET);
}
}
// =====================
// CLOCK CONFIG
// =====================
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.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_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_HSI;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_0) != HAL_OK)
Error_Handler();
}
// =====================
// GPIO INIT
// =====================
static void MX_GPIO_Init(void)
{
GPIO_InitTypeDef GPIO_InitStruct = {0};
__HAL_RCC_GPIOA_CLK_ENABLE();
__HAL_RCC_GPIOB_CLK_ENABLE();
// PA0 = PIR, PA1 = TOUCH
GPIO_InitStruct.Pin = GPIO_PIN_0 | GPIO_PIN_1;
GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
GPIO_InitStruct.Pull = GPIO_NOPULL;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
// PB0 = LED, PB1 = BUZZER
GPIO_InitStruct.Pin = GPIO_PIN_0 | GPIO_PIN_1;
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_RESET);
}
// =====================
void Error_Handler(void)
{
__disable_irq();
while (1)
{
}
}
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