给我esp8266连接薄膜键盘的代码
时间: 2023-12-08 09:04:02 浏览: 40
这里是一个基于ESP8266连接薄膜键盘的示例代码:
```c
#include <ESP8266WiFi.h>
#include <ESP8266HTTPClient.h>
#include <Keypad.h>
// WiFi网络信息
const char* ssid = "your_wifi_ssid";
const char* password = "your_wifi_password";
// 服务器信息
const char* serverAddress = "http://your.server.address";
const int serverPort = 80;
// 薄膜键盘信息
const byte ROWS = 4;
const byte COLS = 4;
char keys[ROWS][COLS] = {
{'1', '2', '3', 'A'},
{'4', '5', '6', 'B'},
{'7', '8', '9', 'C'},
{'*', '0', '#', 'D'}
};
byte rowPins[ROWS] = {D1, D2, D3, D4};
byte colPins[COLS] = {D5, D6, D7, D8};
Keypad keypad = Keypad(makeKeymap(keys), rowPins, colPins, ROWS, COLS);
// HTTP客户端
WiFiClient client;
void setup() {
Serial.begin(9600);
// 连接WiFi网络
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(1000);
Serial.println("Connecting to WiFi...");
}
Serial.println("Connected to WiFi");
// 初始化HTTP客户端
HTTPClient http;
http.begin(client, serverAddress, serverPort);
// 发送初始请求
http.GET("/init");
String response = http.getString();
Serial.println(response);
// 关闭HTTP客户端
http.end();
}
void loop() {
char key = keypad.getKey();
if (key != NO_KEY) {
Serial.print("Key Pressed: ");
Serial.println(key);
// 初始化HTTP客户端
HTTPClient http;
http.begin(client, serverAddress, serverPort);
// 发送按键请求
String requestUrl = "/key/" + String(key);
http.GET(requestUrl);
String response = http.getString();
Serial.println(response);
// 关闭HTTP客户端
http.end();
}
}
```
在这个示例代码中,我们使用了ESP8266的WiFi库和HTTP客户端库,以便将薄膜键盘输入发送到远程服务器。我们还使用了Keypad库来读取薄膜键盘输入。在setup()函数中,我们连接到WiFi网络,并发送初始请求以初始化远程服务器。在loop()函数中,我们读取薄膜键盘输入,并将其发送到远程服务器。请注意,这里我们使用了HTTP GET请求,因此远程服务器的路由器必须支持GET请求。