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(0x48);

// Calibration variables
float slope = 1.0;
float intercept = 0.0;

// Number of samples to use for calibration
const int num_cal_samples = 100;

// Pin to connect to the voltage divider
const int voltage_pin = 34;

void setup() {
  // Start serial communication
  Serial.begin(115200);

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

  // Initialize the ADS1015 ADC
  ads.begin();

  // Calibrate the voltage measurement using a known voltage source
  float voltage_sum = 0.0;
  for (int i = 0; i < num_cal_samples; i++) {
    voltage_sum += analogRead(voltage_pin) * 0.0048828125;
    delay(10);
  }
  float voltage_avg = voltage_sum / num_cal_samples;

  // Calculate the slope and intercept of the calibration line
  float known_voltage = 5.0; // Replace with your known voltage source voltage
  slope = known_voltage / voltage_avg;
  intercept = 0.0 - (slope * voltage_avg);
}

void loop() {
  // Read the voltage from the ADC and apply the calibration
  float voltage = ads.readADC_SingleEnded(0) * 0.0001875;
  voltage = (voltage * slope) + intercept;

  // Print the voltage to serial output
  Serial.print("Voltage: ");
  Serial.print(voltage);
  Serial.println(" V");

  delay(1000);
}

该程序中，我们使用了ESP32的内置ADC来读取电压，同时使用了ADS1015 ADC来提供更高的分辨率和精度。在setup()函数中，我们首先连接到Wi-Fi网络，然后使用已知电压源对电压测量进行自动校准。在loop()函数中，我们读取ADC值并应用校准系数，最后将测量到的电压输出到串口。

请注意，在实际使用中，您需要通过更精确的方法来确定已知电压源的电压，并根据需要调整num_cal_samples的值。