写一个带回归系数自动校准的esp32测量电压的程序

以下是一个带回归系数自动校准的ESP32测量电压的程序示例：

#include <WiFi.h>
#include <Wire.h>
#include <Adafruit_ADS1015.h>

// Replace with your network credentials
const char* ssid = "your_SSID";
const char* password = "your_PASSWORD";

// Create an instance of the ADS1015 ADC
Adafruit_ADS1115 ads;

// Calibration constants
float slope = 1.0; // default calibration slope
float intercept = 0.0; // default calibration intercept
const float targetVoltage = 5.0; // target voltage for calibration

void setup() {
  Serial.begin(9600);

  // Connect to Wi-Fi network with SSID and password
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.println("Connecting to WiFi...");
  }
  Serial.println("Connected to WiFi");

  // Initialize the ADS1015 with default settings
  ads.begin();

  // Perform calibration
  calibrate();
}

void loop() {
  // Read the voltage from channel 0
  float voltage = ads.readADC_SingleEnded(0) * slope + intercept;
  Serial.print("Voltage: ");
  Serial.print(voltage);
  Serial.println(" V");

  delay(1000);
}

// Perform calibration using the target voltage
void calibrate() {
  Serial.println("Performing calibration...");
  Serial.print("Connect a voltage source to channel 0 and set it to ");
  Serial.print(targetVoltage);
  Serial.println(" V");

  // Wait for user to connect the voltage source
  while (!Serial.available()) {
    delay(100);
  }
  Serial.read();

  // Read the voltage from channel 0
  float voltage = ads.readADC_SingleEnded(0) * ads.getMultiplier_V();
  Serial.print("Measured voltage: ");
  Serial.print(voltage);
  Serial.println(" V");

  // Calculate the calibration constants
  slope = targetVoltage / voltage;
  intercept = 0.0;
  Serial.print("Calibration constants: slope = ");
  Serial.print(slope);
  Serial.print(", intercept = ");
  Serial.println(intercept);
}

这个程序使用了Adafruit_ADS1015库来读取ADS1015 ADC的数据。程序的主要部分是`loop()`函数，它读取通道0的电压并根据之前进行的校准计算实际电压。校准在程序启动时进行，通过获取用户输入的目标电压并从通道0读取实际电压来计算斜率和截距。这些值用于校准后续读取的电压值。

注意，这个程序中只校准了电压读数的线性部分。如果您需要更高精度的校准，您可能需要使用非线性校准方法。