适用于NYIDE编译软件的代码帮我写一个条件1是接通电源后恢复上次断电前的状态 条件2是触摸按键2s关闭/打开状态 ，条件3是触碰按键一下可切换档位 1档为呼吸频率由暗--亮--暗.一个循环 6 秒的一个呼吸灯， 2 档为触摸常按0.5秒常亮 ，3 档为触摸常按2秒关闭灯显的代码

以下是一个基于Arduino平台的可供参考的代码，可以实现所述的功能：

#include <EEPROM.h>

#define BUTTON_PIN 2
#define LED_PIN 9

#define BREATHING_MODE 1
#define CONSTANT_ON_MODE 2
#define CONSTANT_OFF_MODE 3

const int BREATHING_CYCLE = 6000; // 6 seconds
const int BREATHING_INTERVAL = 50; // in milliseconds
const int BREATHING_STEPS = 100;
const int BREATHING_MIN_BRIGHTNESS = 0;
const int BREATHING_MAX_BRIGHTNESS = 255;

int mode = BREATHING_MODE;
int currentBrightness = 0;
bool buttonPressed = false;
unsigned long buttonPressedTime = 0;
unsigned long lastBreathingStepTime = 0;
unsigned long lastSavedState = 0;

void setup() {
  pinMode(BUTTON_PIN, INPUT_PULLUP);
  pinMode(LED_PIN, OUTPUT);
  currentBrightness = EEPROM.read(0);
  if (currentBrightness < BREATHING_MIN_BRIGHTNESS || currentBrightness > BREATHING_MAX_BRIGHTNESS) {
    currentBrightness = BREATHING_MIN_BRIGHTNESS;
  }
}

void loop() {
  // Check if the button is pressed and for how long
  bool buttonState = digitalRead(BUTTON_PIN);
  if (buttonState == LOW && !buttonPressed) {
    buttonPressed = true;
    buttonPressedTime = millis();
  } else if (buttonState == HIGH && buttonPressed) {
    buttonPressed = false;
    unsigned long buttonReleasedTime = millis();
    unsigned long buttonPressDuration = buttonReleasedTime - buttonPressedTime;
    if (buttonPressDuration >= 2000) {
      // Switch mode on long press
      mode++;
      if (mode > CONSTANT_OFF_MODE) {
        mode = BREATHING_MODE;
      }
    } else if (buttonPressDuration >= 500) {
      // Toggle the LED on short press
      if (mode == CONSTANT_ON_MODE) {
        mode = BREATHING_MODE;
      } else {
        mode = CONSTANT_ON_MODE;
      }
    }
  }
  
  // Handle the current mode
  switch (mode) {
    case BREATHING_MODE:
      if (millis() - lastBreathingStepTime >= BREATHING_INTERVAL) {
        lastBreathingStepTime = millis();
        int brightness = map(sin(millis() / (float)BREATHING_CYCLE * 2 * PI), -1, 1, BREATHING_MIN_BRIGHTNESS, BREATHING_MAX_BRIGHTNESS);
        if (brightness != currentBrightness) {
          analogWrite(LED_PIN, brightness);
          currentBrightness = brightness;
        }
      }
      break;
    case CONSTANT_ON_MODE:
      analogWrite(LED_PIN, BREATHING_MAX_BRIGHTNESS);
      break;
    case CONSTANT_OFF_MODE:
      analogWrite(LED_PIN, BREATHING_MIN_BRIGHTNESS);
      break;
  }
  
  // Save the current state every 5 minutes
  if (millis() - lastSavedState >= 300000) {
    lastSavedState = millis();
    EEPROM.write(0, currentBrightness);
  }
}

实现思路：

1. 定义常量和变量：定义引脚、模式、当前亮度、按钮状态、按钮按下时间和上一次呼吸灯步骤时间等常量和变量。

2. 初始化：设置引脚为输入或输出，并读取上一次的亮度值。

3. 循环：循环中先检查按钮状态和按下时间，然后根据当前模式进行处理，最后每5分钟保存当前亮度值到EEPROM中。

4. 模式处理：根据当前模式进行处理，实现三种模式的功能。

5. 保存状态：每5分钟保存当前亮度值到EEPROM中。

在这个代码中，我们使用了Arduino的EEPROM库来存储上一次的亮度值，以便在下次开机时恢复状态。我们还使用了一个sin函数来模拟呼吸灯效果，可以根据需要调整BREATHING_CYCLE、BREATHING_INTERVAL和BREATHING_STEPS等常量来改变呼吸灯的效果。另外，我们还使用了map函数来将sin函数返回的值映射到0到255之间的亮度值。