ADS1100 Arduino

ADS1100.ino

#include <Wire.h>

#define ADS1100_ADDRESS 0x48 // https://www.ti.com/lit/ds/sbas239b/sbas239b.pdf
#define BATTERY_MIN_VOLTAGE 3.0
#define BATTERY_MAX_VOLTAGE 4.2
#define BATTERY_CAPACITY 2500.0
#define BATTERY_ENERGY 9.25

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

void loop() {
  // Start a conversion
  Wire.beginTransmission(ADS1100_ADDRESS);
  Wire.write(0x00);
  Wire.endTransmission();

  // Wait for the conversion to complete
  delay(10);

  // Read the conversion result
  Wire.requestFrom(ADS1100_ADDRESS, 2);
  uint16_t raw = (Wire.read() << 8) | Wire.read();

  // Convert the raw value to voltage
  float voltage = (raw * 4.096) / 32768.0;

  // Calculate the remaining capacity, energy, and percentage
  float remainingCapacity = (voltage - BATTERY_MIN_VOLTAGE) / (BATTERY_MAX_VOLTAGE - BATTERY_MIN_VOLTAGE) * BATTERY_CAPACITY;
  float remainingEnergy = (voltage - BATTERY_MIN_VOLTAGE) / (BATTERY_MAX_VOLTAGE - BATTERY_MIN_VOLTAGE) * BATTERY_ENERGY;
  float batteryPercentage = (voltage - BATTERY_MIN_VOLTAGE) / (BATTERY_MAX_VOLTAGE - BATTERY_MIN_VOLTAGE) * 100.0;

  // Limit the values to the valid range
  remainingCapacity = constrain(remainingCapacity, 0, BATTERY_CAPACITY);
  remainingEnergy = constrain(remainingEnergy, 0, BATTERY_ENERGY);
  batteryPercentage = constrain(batteryPercentage, 0, 100.0);

  // Print the battery information to the serial monitor
  Serial.print("Battery Voltage: ");
  Serial.print(voltage, 2);
  Serial.println(" V");

  Serial.print("Remaining Capacity: ");
  Serial.print(remainingCapacity, 0);
  Serial.println(" mAh");

  Serial.print("Remaining Energy: ");
  Serial.print(remainingEnergy, 2);
  Serial.println(" Wh");

  Serial.print("Battery Percentage: ");
  Serial.print(batteryPercentage, 1);
  Serial.println("%");

  Serial.println();

  delay(1000);
}