我想要一个esp32 驱动ssd1306显示温度曲线的程序

好的，以下是一个基于ESP32和SSD1306的温度曲线显示程序的示例代码：

#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include <Wire.h>
#include <OneWire.h>
#include <DallasTemperature.h>

#define OLED_RESET 4
Adafruit_SSD1306 display(OLED_RESET);

#define ONE_WIRE_BUS 5
OneWire oneWire(ONE_WIRE_BUS);
DallasTemperature sensors(&oneWire);

#define NUM_POINTS 128
float tempData[NUM_POINTS];
int currentIndex = 0;

void setup() {
  display.begin(SSD1306_SWITCHCAPVCC, 0x3C);
  display.clearDisplay();
  display.display();

  sensors.begin();

  for (int i = 0; i < NUM_POINTS; i++) {
    tempData[i] = 0;
  }
}

void loop() {
  sensors.requestTemperatures();
  float tempC = sensors.getTempCByIndex(0);

  tempData[currentIndex] = tempC;
  currentIndex = (currentIndex + 1) % NUM_POINTS;

  display.clearDisplay();
  display.setCursor(0, 0);
  display.println("Temperature Curve");
  display.drawLine(0, 10, 127, 10, WHITE);
  display.drawLine(0, 30, 127, 30, WHITE);

  float minTemp = tempData[0];
  float maxTemp = tempData[0];
  for (int i = 0; i < NUM_POINTS; i++) {
    if (tempData[i] < minTemp) {
      minTemp = tempData[i];
    }
    if (tempData[i] > maxTemp) {
      maxTemp = tempData[i];
    }
  }

  float tempRange = maxTemp - minTemp;
  float yScale = 20.0 / tempRange;
  float xScale = 127.0 / NUM_POINTS;

  for (int i = 0; i < NUM_POINTS - 1; i++) {
    int x1 = i * xScale;
    int y1 = 30 - (tempData[(currentIndex + i) % NUM_POINTS] - minTemp) * yScale;
    int x2 = (i + 1) * xScale;
    int y2 = 30 - (tempData[(currentIndex + i + 1) % NUM_POINTS] - minTemp) * yScale;
    display.drawLine(x1, y1, x2, y2, WHITE);
  }

  display.display();
  delay(1000);
}

这个程序使用了Adafruit的SSD1306库和DallasTemperature库，通过读取DS18B20温度传感器的数据来绘制温度曲线。程序将最近128个温度值存储在一个循环缓冲区中，并使用SSD1306 OLED显示器绘制温度曲线。