人脸和手势识别模组 用BW21-CBV-Kit设计洗衣机远程控制面板

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本文介绍了安信可 BW21-CBV-Kit 开发板结合扩展板，实现了基于 HTTP 协议的洗衣机网页控制面板，可模拟远程控制洗衣机的运行、暂停和停止状态，并通过 OLED 实时显示洗衣机状态。

项目介绍

HTTP 网页发送指令，实现远程控制洗衣机运行状态且驱动OLED实时显示。

硬件连接
流程图
工程代码
效果演示

硬件连接

该项目是模拟洗衣机控制，因此硬件方面仅使用 OLED 显示屏。

若要对外设进行实际控制，可在相关代码模块中添加对应的 GPIO 操作。

流程图

工程代码

打开 Arduino IDE ，新建工程并添加如下代码

#include
#include
#include
#include
#include
#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64
#define OLED_RESET -1
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);
// Washer state
enum WasherState {
IDLE,
WASHING,
RINSING,
SPINNING,
DONE,
PAUSED
};
const char* stateNames[] = {
"Standby",
"Washing",
"Rinsing",
"Spinning",
"Completed",
"Paused"
};
WasherState currentState = IDLE;
int remainingTime = 0; // second
unsigned long lastUpdateTime = 0;
// WiFi credentials
char ssid[] = "xxx";
char password[] = "xxx";
WiFiServer server(80);
void setup() {
Serial.begin(115200);
// Initialize OLED
if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) {
Serial.println(F("SSD1306 allocation failed"));
for(;;);
}
display.display();
delay(2000);
display.clearDisplay();
// Connect to WiFi
Serial.print("Connecting to ");
Serial.println(ssid);
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.println("");
Serial.println("WiFi connected");
Serial.print("IP address: ");
Serial.println(WiFi.localIP());
server.begin();
Serial.println("HTTP server started");
updateDisplay();
}
void loop() {
WiFiClient client = server.available();
if (client) {
Serial.println("New client connected");
String currentLine = "";
while (client.connected()) {
if (client.available()) {
char c = client.read();
Serial.write(c);
if (c == 'n') {
if (currentLine.length() == 0) {
// Send HTTP headers
client.println("HTTP/1.1 200 OK");
client.println("Content-type:text/html");
client.println("Connection: close");
client.println();
// Send HTML content
client.print(" ");
client.print(" ");
client.print(" body{font-family:Arial;text-align:center;margin:0 auto;padding:20px;max-width:400px;}");
client.print(".btn{background-color:#4CAF50;border:none;color:white;padding:15px 32px;text-align:center;");
client.print("text-decoration:none;display:inline-block;font-size:16px;margin:4px 2px;cursor:pointer;border-radius:8px;width:150px;}");
client.print(".status{font-size:24px;margin:20px 0;padding:10px;background-color:#f0f0f0;border-radius:8px;}");
client.print(".btn-container{display:flex;flex-direction:column;align-items:center;gap:10px;} ");
client.print("

Washer Control Panel

");
client.print("

Current Status: ");
client.print(stateNames[currentState]);
client.print("

");
client.print("Start");
client.print("Pause");
client.print("Stop");
client.print("

");
break;
} else {
// Process requests
if (currentLine.startsWith("GET /start")) {
handleStart();
} else if (currentLine.startsWith("GET /pause")) {
handlePause();
} else if (currentLine.startsWith("GET /stop")) {
handleStop();
}
currentLine = "";
}
} else if (c != 'r') {
currentLine += c;
}
}
}
client.stop();
Serial.println("Client disconnected");
}
// Update washer state
if (currentState != IDLE && currentState != DONE && currentState != PAUSED) {
if (millis() - lastUpdateTime >= 1000) { // Update every second
lastUpdateTime = millis();
remainingTime--;
// State transition logic
if (remainingTime <= 0) {
currentState = DONE;
} else if (currentState == WASHING && remainingTime <= 20) {
currentState = RINSING;
} else if (currentState == RINSING && remainingTime <= 10) {
currentState = SPINNING;
}
updateDisplay();
}
}
}
void updateDisplay() {
display.clearDisplay();
display.setTextSize(1);
display.setTextColor(SSD1306_WHITE);
display.setCursor(0, 0);
display.println("Washer Status: ");
display.setTextSize(2);
display.setCursor(0, 16);
display.println(stateNames[currentState]);
display.setTextSize(1);
display.setCursor(0, 40);
display.print("IP: ");
display.println(WiFi.localIP());
if (currentState != IDLE && currentState != DONE) {
display.setCursor(0, 52);
display.print("Time left: ");
display.print(remainingTime);
display.println("s");
}
display.display();
}
void handleStart() {
if (currentState == IDLE || currentState == DONE) {
currentState = WASHING;
remainingTime = 30; // 30 seconds (simulating 30 minutes)
lastUpdateTime = millis();
Serial.println("Washer started");
} else if (currentState == PAUSED) {
currentState = WASHING; // Simplified - should resume previous state
lastUpdateTime = millis();
Serial.println("Washer resumed");
}
updateDisplay();
}
void handlePause() {
if (currentState == WASHING || currentState == RINSING || currentState == SPINNING) {
currentState = PAUSED;
Serial.println("Washer paused");
}
updateDisplay();
}
void handleStop() {
if (currentState != IDLE) {
currentState = IDLE;
remainingTime = 0;
Serial.println("Washer stopped");
}
updateDisplay();
}

保存工程，设备选择 AMB82-MINI 开发板，选择串口对应的端口号；

按住 BOOT 键的同时，短按 EN 键，使设备进入下载模式；

点击 上传 按钮，待上传完成，短按 EN 键复位并运行程序。

效果演示

串口打印网页服务器 ip 地址 192.168.31.111

网页端

打开浏览器输入开发板 ip 地址，进入洗衣机控制面板。

停止状态

暂停状态

洗涤状态

OLED状态显示

点击网页的按钮即可进入相应的工作状态，同时 OLED 显示当前状态。

动态演示

审核编辑 黄宇