ESP8266基于Arduino接入贝壳物联，使用天猫精灵控制WS2812B灯带 - 数码之家

void setup() {
// 设置Wifi
WiFiManager wifiManager;
wifiManager.autoConnect();
}

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void loop() {
// 检测网络是否通畅
while (WiFi.status() != WL_CONNECTED) {
delay(1000);
Serial.print(".");
}
// 检测是否连接到服务器
if (!client.connected()) {
if (!client.connect(host, httpPort)) {
Serial.println("connection failed");
delay(5000);
return;
}
}
// 检测是否需要发送心跳包
if (millis() - lastCheckInTime > postingInterval || lastCheckInTime == 0) {
Serial.println("Send HeartBeat!!");
sendHeartBeat();
}
// 检测是否收到服务器推送
if (client.available()) {
String inputString = client.readStringUntil('\n');
onMessageReceive(inputString);
}
// 判断是否需要将LED闪烁
if (ledOn) {
doLedStep();
}
}

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{"M":"say","ID":"U11085","NAME":"hzy3774(web)","C":"play","T":"1577714088"}
{"M":"say","ID":"U11085","NAME":"hzy3774(web)","C":"stop","T":"1577714088"}

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void onMessageReceive(String msg) {
msg.trim();
Serial.println(msg);
if (msg.startsWith("{") && msg.endsWith("}")) {
DynamicJsonDocument doc(1024);
deserializeJson(doc, msg);
JsonObject obj = doc.as<JsonObject>();
String M = obj["M"];
if (M == "say") {
String C = obj["C"];
if (C == "play") {
ledOn = 1;
} else if (C == "stop") {
ledOn = 0;
turnLedColor(0);
} else if (C.startsWith("{") && C.endsWith("}")) {
deserializeJson(doc, C);
obj = doc.as<JsonObject>();
onExtraCommand(obj);
}
}
}
}

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{"M":"say","ID":"U11085","C":"play","SIGN":"Aligenie","T":"1577716165"}

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{"M":"say","ID":"U11085","C":"{"n":"SetColor","a":"color","v":"Green"}","SIGN":"Aligenie","T":"1577715366"}
{"M":"say","ID":"U11085","C":"{"n":"SetBrightness","a":"brightness","v":"10"}","SIGN":"Aligenie","T":"1577715412"}

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void onExtraCommand(JsonObject obj) {
String aa = obj["a"];
if (aa == "brightness") {
int vv = obj["v"];
FastLED.setBrightness(vv * 255 / 100);
} else if (aa == "color") {
String color = obj["v"];
ledOn = 0;
if (color == "Red") {
turnLedColor(CRGB::Red);
} else if (color == "Green") {
turnLedColor(CRGB::Green);
} else if (color == "Blue") {
turnLedColor(CRGB::Blue);
} else if (color == "White") {
turnLedColor(CRGB::White);
}
}
}

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#include <ESP8266WiFi.h>
#include <WiFiManager.h>
#include <ArduinoJson.h>
//============= 此处必须修该============
String DEVICEID = "00000"; // 你的设备编号 ==
String APIKEY = "0000000"; // 设备密码==
unsigned long lastCheckInTime = 0; //记录上次报到时间
const unsigned long postingInterval = 40000; // 每隔40秒向服务器报到一次
const char* host = "www.bigiot.net";
const int httpPort = 8181;
WiFiClient client;
//============ LED 相关 ======================
int ledOn = 0;
int hue = 0;
#include <FastLED.h>
#define LED_PIN 8 //我的LED信号线IN接在8引脚
#define NUM_LEDS 12 //我的灯带一共级联了12颗LED
CRGB leds[NUM_LEDS];
void setup() {
Serial.begin(115200);
// 设置LED
FastLED.addLeds<WS2812, LED_PIN, GRB>(leds, NUM_LEDS);
FastLED.setBrightness(20); //可以设置全局亮度，调低亮度不刺眼
turnLedColor(0);
// 设置Wifi
WiFiManager wifiManager;
wifiManager.autoConnect();
}
void loop() {
// 检测网络是否通畅
while (WiFi.status() != WL_CONNECTED) {
delay(1000);
Serial.print(".");
}
// 检测是否连接到服务器
if (!client.connected()) {
if (!client.connect(host, httpPort)) {
Serial.println("connection failed");
delay(5000);
return;
}
}
// 检测是否需要发送心跳包
if (millis() - lastCheckInTime > postingInterval || lastCheckInTime == 0) {
Serial.println("Send HeartBeat!!");
sendHeartBeat();
}
// 检测是否收到服务器推送
if (client.available()) {
String inputString = client.readStringUntil('\n');
onMessageReceive(inputString);
}
// 判断是否需要将LED闪烁
if (ledOn) {
doLedStep();
}
}
void turnLedColor(int c) {
for (int i = 0; i < NUM_LEDS; i++) {
leds[i] = c;
}
FastLED.show();
}
void doLedStep() {
for (int i = 0; i < NUM_LEDS; i++) {
leds[i] = CHSV( (hue + (255 / NUM_LEDS) * i), 255, 255); //用HSV色彩空间，不断改变H即可
}
FastLED.show();
delay(5);
hue = (hue + 3) % 255;
}
void onExtraCommand(JsonObject obj) {
String aa = obj["a"];
if (aa == "brightness") {
int vv = obj["v"];
FastLED.setBrightness(vv * 255 / 100);
} else if (aa == "color") {
String color = obj["v"];
ledOn = 0;
if (color == "Red") {
turnLedColor(CRGB::Red);
} else if (color == "Green") {
turnLedColor(CRGB::Green);
} else if (color == "Blue") {
turnLedColor(CRGB::Blue);
} else if (color == "White") {
turnLedColor(CRGB::White);
}
}
}
void onMessageReceive(String msg) {
msg.trim();
Serial.println(msg);
if (msg.startsWith("{") && msg.endsWith("}")) {
DynamicJsonDocument doc(1024);
deserializeJson(doc, msg);
JsonObject obj = doc.as<JsonObject>();
String M = obj["M"];
if (M == "say") {
String C = obj["C"];
if (C == "play") {
ledOn = 1;
} else if (C == "stop") {
ledOn = 0;
turnLedColor(0);
} else if (C.startsWith("{") && C.endsWith("}")) {
deserializeJson(doc, C);
obj = doc.as<JsonObject>();
onExtraCommand(obj);
}
}
}
}
void sendHeartBeat() {
String msg = "{"M":"checkin","ID":"" + DEVICEID + "","K":"" + APIKEY + ""}\n";
client.print(msg);
lastCheckInTime = millis();
}

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