Water_Level_Sensor_4-20mA.ino

#include <Arduino.h>
#include <Wire.h>
#include <IOXESP32_4-20mA_Receiver.h>

Receiver4_20 sensor(&Wire, 0x45); // Default 0x45

const int raw_in_0cm = 6485; // Enter Raw value in level 0CM 
const int raw_in_20cm = 7521; // Enter Raw value in level 20CM 

void setup() {
  Serial.begin(115200);

  Wire.begin(); // Start I2C
  while (!sensor.begin()) { // Start ADC
    Serial.println("Not found hardware :(");
    delay(2000);
  }
}

void loop() {
  delay(100);
  if (sensor.measure()) { // Update analog value from ADC
    int16_t raw = sensor.raw(); // Read raw value (-32768 to 32767)
    float current = sensor.current(); // Read current in mA unit

    float level_cm = (float)(raw - raw_in_0cm) * 20.0f / (raw_in_20cm - raw_in_0cm); // Map (float)
    level_cm = constrain(level_cm, 0, 500); // limit 0 - 500CM
    Serial.printf("Raw=%5d   Level=%.1f CM\n", raw, level_cm);
  } else {
    Serial.println("Hardware error !");
  }
}