以下作品由安信可社區(qū)用戶

無垠的廣袤制作

本文介紹了安信可 BW21-CBV-Kit 開發(fā)板結(jié)合擴(kuò)展板，實(shí)現(xiàn)了基于 HTTP 協(xié)議的洗衣機(jī)網(wǎng)頁控制面板，可模擬遠(yuǎn)程控制洗衣機(jī)的運(yùn)行、暫停和停止?fàn)顟B(tài)，并通過 OLED 實(shí)時(shí)顯示洗衣機(jī)狀態(tài)。

項(xiàng)目介紹

HTTP 網(wǎng)頁發(fā)送指令，實(shí)現(xiàn)遠(yuǎn)程控制洗衣機(jī)運(yùn)行狀態(tài)且驅(qū)動(dòng)OLED實(shí)時(shí)顯示。

硬件連接
流程圖
工程代碼
效果演示

硬件連接

該項(xiàng)目是模擬洗衣機(jī)控制，因此硬件方面僅使用 OLED 顯示屏。

若要對(duì)外設(shè)進(jìn)行實(shí)際控制，可在相關(guān)代碼模塊中添加對(duì)應(yīng)的 GPIO 操作。

流程圖

工程代碼

打開 Arduino IDE ，新建工程并添加如下代碼

#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，設(shè)備選擇 AMB82-MINI 開發(fā)板，選擇串口對(duì)應(yīng)的端口號(hào)；

按住 BOOT 鍵的同時(shí)，短按 EN 鍵，使設(shè)備進(jìn)入下載模式；

點(diǎn)擊 上傳 按鈕，待上傳完成，短按 EN 鍵復(fù)位并運(yùn)行程序。

效果演示

串口打印網(wǎng)頁服務(wù)器 ip 地址 192.168.31.111

網(wǎng)頁端

打開瀏覽器輸入開發(fā)板 ip 地址，進(jìn)入洗衣機(jī)控制面板。

停止?fàn)顟B(tài)

暫停狀態(tài)

洗滌狀態(tài)

OLED狀態(tài)顯示

點(diǎn)擊網(wǎng)頁的按鈕即可進(jìn)入相應(yīng)的工作狀態(tài)，同時(shí) OLED 顯示當(dāng)前狀態(tài)。

動(dòng)態(tài)演示

審核編輯 黃宇