ESP32-C6物联网开发实战：基于Wi-Fi 6与BLE 5.2的智能家居节点设计

2.2 软件环境配置

步骤：

1. 安装Arduino IDE 2.3.2
2. 添加开发板URL：https://raw.githubusercontent.com/espressif/arduino-esp32/gh-pages/package_esp32_dev_index.json

安装库：

arduino-cli lib install 'WiFiClientSecure' arduino-cli lib install 'BLE' arduino-cli lib install 'Adafruit_SHT31' 

三、Wi-Fi 6通信实现

3.1 STA模式连接代码

创建文件：wifi_connector.ino

#include<WiFi.h>constchar* ssid ="Your_WiFi6_SSID";constchar* password ="Your_Password";voidsetup(){ Serial.begin(115200);// 启用Wi-Fi 6模式 WiFi.mode(WIFI_STA);esp_wifi_set_protocol(WIFI_IF_STA, WIFI_PROTOCOL_11AX | WIFI_PROTOCOL_11N); WiFi.begin(ssid, password);while(WiFi.status()!= WL_CONNECTED){delay(500); Serial.print(".");} Serial.println("\nConnected to Wi-Fi 6 Network!"); Serial.print("IP Address: "); Serial.println(WiFi.localIP());}voidloop(){// 维持连接心跳if(WiFi.status()!= WL_CONNECTED){ WiFi.reconnect();}delay(30000);}

3.2 TWT节能配置

// 在setup()中添加esp_wifi_config_80211ax_twti(true,2000);// 启用TWT，2000ms间隔

四、BLE 5.2功能开发

4.1 BLE服务构建

创建文件：ble_service.ino

#include<BLEDevice.h>#include<BLEUtils.h>#include<BLEServer.h>#defineSERVICE_UUID"4fafc201-1fb5-459e-8fcc-c5c9c331914b"#defineCHARACTERISTIC_UUID"beb5483e-36e1-4688-b7f5-ea07361b26a8" BLECharacteristic *pCharacteristic;voidsetup(){BLEDevice::init("SmartHome_Node"); BLEServer *pServer =BLEDevice::createServer(); BLEService *pService = pServer->createService(SERVICE_UUID); pCharacteristic = pService->createCharacteristic( CHARACTERISTIC_UUID, BLECharacteristic::PROPERTY_READ | BLECharacteristic::PROPERTY_WRITE ); pCharacteristic->setValue("Node Ready"); pService->start(); BLEAdvertising *pAdvertising = pServer->getAdvertising(); pAdvertising->setMinPreferred(0x06);// 优化连接间隔 pAdvertising->start();}voidloop(){// BLE事件处理delay(2000);}

4.2 2M PHY高速模式

// 在setup()中添加esp_ble_gap_set_prefer_phy(BLE_ADDR_TYPE_PUBLIC, ESP_BLE_GAP_PHY_2M, ESP_BLE_GAP_PHY_2M);

五、系统集成

5.1 传感器数据采集

I2C

ADC

Wi-Fi

BLE

SHT30传感器

ESP32-C6

光敏电阻

MQTT Broker

手机APP

5.2 继电器控制代码

#defineRELAY_PIN12voidcontrolRelay(bool state){digitalWrite(RELAY_PIN, state ? HIGH : LOW);// 状态同步更新 pCharacteristic->setValue(state ?"ON":"OFF");}

六、云端交互

6.1 MQTT连接实现

#include<PubSubClient.h> WiFiClient espClient; PubSubClient client(espClient);voidmqttConnect(){ client.setServer("mqtt.broker.com",1883);while(!client.connected()){if(client.connect("ESP32C6_Node")){ client.subscribe("home/livingroom/light");}}}voidcallback(char* topic, byte* payload,unsignedint length){if(strcmp(topic,"home/livingroom/light")==0){controlRelay(payload[0]=='1');}}

七、部署优化

7.1 深度睡眠配置

// 进入睡眠模式esp_sleep_enable_timer_wakeup(60*1000000);// 60秒唤醒esp_deep_sleep_start();

7.2 PCB设计建议

ESP32-C6

天线区域

电源电路

传感器接口

执行器驱动

八、成果测试

性能指标

场景测试：

1. 通过手机APP经BLE秒控灯光
2. 云端同时控制20个节点
3. 断电恢复后自动重连

技术图谱

ESP32-C6

Communication

Wi-Fi 6

OFDMA

TWT

BLE 5.2

2M PHY

广播扩展

Sensors

SHT30

GL5528

Control

继电器

PWM调光

Cloud

MQTT

HTTP API

Power

深度睡眠

动态调频