80 lines
1.7 KiB
Plaintext
80 lines
1.7 KiB
Plaintext
以下是使用ESP32和U8g2库在OLED上显示日期和时间的示例代码：
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```c++
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#include <U8g2lib.h>
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#include <WiFi.h>
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#include <time.h>
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// Replace with your network credentials
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const char* ssid = "your_SSID";
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const char* password = "your_PASSWORD";
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// Define OLED pins
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#define OLED_SDA 21
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#define OLED_SCL 22
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#define OLED_RST 16
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// Define OLED object
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U8G2_SSD1306_128X64_NONAME_F_SW_I2C u8g2(U8G2_R0, OLED_SCL, OLED_SDA, OLED_RST);
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void setup() {
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// Start serial communication
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Serial.begin(115200);
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// Connect to Wi-Fi network
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WiFi.begin(ssid, password);
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Serial.println("Connecting to Wi-Fi");
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while (WiFi.status() != WL_CONNECTED) {
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delay(1000);
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Serial.println("Connecting...");
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}
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Serial.println("Connected to Wi-Fi");
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// Initialize time
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configTime(0, 0, "pool.ntp.org");
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Serial.println("Waiting for time");
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while (!time(nullptr)) {
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delay(1000);
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Serial.println("Waiting...");
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}
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Serial.println("Time synchronized");
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// Initialize OLED display
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u8g2.begin();
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u8g2.setFont(u8g2_font_ncenB08_tr);
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}
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void loop() {
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// Get current time
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time_t now = time(nullptr);
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struct tm* timeinfo = localtime(&now);
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// Format date and time
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char date[20];
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strftime(date, sizeof(date), "%Y-%m-%d", timeinfo);
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char time[20];
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strftime(time, sizeof(time), "%H:%M:%S", timeinfo);
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// Clear OLED display
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u8g2.clearBuffer();
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// Display date and time
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u8g2.setCursor(0, 20);
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u8g2.print(date);
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u8g2.setCursor(0, 40);
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u8g2.print(time);
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// Send display buffer to OLED
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u8g2.sendBuffer();
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// Wait for 1 second
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delay(1000);
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}
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```
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在此示例代码中，我们首先连接到Wi-Fi网络，然后使用NTP服务器同步时间。然后，我们初始化OLED显示器并在循环中获取当前时间并将其格式化为日期和时间。最后，我们在OLED上显示日期和时间，并等待1秒钟。 |