/**
  ******************************************************************************
  * @file    relay_control.c
  * @brief   继电器控制模块实现
  * @author  Application Layer
  * @version 2.0
  ******************************************************************************
  * @attention
  * 本模块实现单路继电器的安全控制
  * 关键特性：
  * 1. 最小切换间隔保护，防止频繁切换损坏继电器
  * 2. 状态记录
  * 3. 调试日志输出
  * 
  * 修订历史：
  * v2.0 - 精简为单路继电器控制，移除冗余功能
  ******************************************************************************
  */

#include "relay_control.h"
#include "uart2_print.h"
#include "main.h"

#define DEBUG_RELAY  1

#if DEBUG_RELAY
#define DEBUG_LOG(fmt, ...)  UART2_Print_Printf("[RELAY] " fmt "\r\n", ##__VA_ARGS__)
#else
#define DEBUG_LOG(fmt, ...)
#endif

static bool current_state = false;
static uint32_t last_toggle_tick = 0;

void Relay_Init(void)
{
    HAL_GPIO_WritePin(RL_Control_GPIO_Port, RL_Control_Pin, GPIO_PIN_RESET);
    current_state = false;
    last_toggle_tick = 0;
    
    DEBUG_LOG("Init OK, state=OFF");
}

void Relay_SetState(bool state)
{
    uint32_t current_tick = HAL_GetTick();
    
    if (current_tick - last_toggle_tick < RELAY_MIN_INTERVAL) {
        DEBUG_LOG("Toggle too fast, ignored");
        return;
    }
    
    if (current_state == state) {
        DEBUG_LOG("State unchanged: %s", state ? "ON" : "OFF");
        return;
    }
    
    HAL_GPIO_WritePin(RL_Control_GPIO_Port, RL_Control_Pin, 
                       state ? GPIO_PIN_SET : GPIO_PIN_RESET);
    
    current_state = state;
    last_toggle_tick = current_tick;
    
    DEBUG_LOG("Relay -> %s", state ? "ON" : "OFF");
}

bool Relay_GetState(void)
{
    return current_state;
}