Specification

ADS115 아날로그 4채널 (A0 ~ A3) I2C 변환을 지원하는 모듈입니다.

아두이노 기반 기본 예제입니다.

Adafruit 라이브러리를 사용합니다.

#include <Wire.h>

#include <Adafruit_ADS1015.h>

Adafruit_ADS1015 ads1015; // Construct an ads1015 at the default address: 0x48

Adafruit_ADS1115 ads1115(0x49); // construct an ads1115 at address 0x49

// i2c scanner를 이용하여 (0X49) address를 먼저 확인해주시기 바랍니다.

void setup(void)

{

ads1015.begin(); // Initialize ads1015

ads1115.begin(); // Initialize ads1115

}

Case1: Single Ended Conversio

uint16_t readADC_SingleEnded(uint8_t channel);

#include <Wire.h>

#include <Adafruit_ADS1015.h>

Adafruit_ADS1015 ads1015;

void setup(void)

{

Serial.begin(9600);

Serial.println("Hello!");

Serial.println("Getting single-ended readings from AIN0..3");

Serial.println("ADC Range: +/- 6.144V (1 bit = 3mV)");

ads1015.begin();

}

void loop(void)

{

int16_t adc0, adc1, adc2, adc3;

adc0 = ads1015.readADC_SingleEnded(0);

adc1 = ads1015.readADC_SingleEnded(1);

adc2 = ads1015.readADC_SingleEnded(2);

adc3 = ads1015.readADC_SingleEnded(3);

Serial.print("AIN0: "); Serial.println(adc0);

Serial.print("AIN1: "); Serial.println(adc1);

Serial.print("AIN2: "); Serial.println(adc2);

Serial.print("AIN3: "); Serial.println(adc3);

Serial.println(" ");

delay(1000);

}

Case2: Differential Conversio

int16_t readADC_Differential_0_1(void);

Perform a differential analog to digital conversion on the voltage between channels 0 and 1.

int16_t readADC_Differential_2_3(void);

Perform a differential analog to digital conversion on the voltage between channels 2 and 3.

#include <Wire.h>

#include <Adafruit_ADS1015.h>

Adafruit_ADS1015 ads1015;

void setup(void)

{

Serial.begin(9600);

Serial.println("Hello!");

Serial.println("Getting differential reading from AIN0 (P) and AIN1 (N)");

Serial.println("ADC Range: +/- 6.144V (1 bit = 3mV)");

ads1015.begin();

}

void loop(void)

{

int16_t results;

results = ads1015.readADC_Differential_0_1();

Serial.print("Differential: "); Serial.print(results); Serial.print("("); Serial.print(results * 3); Serial.println("mV)");

delay(1000);

}

참고 자료 : https://cafe.naver.com/diyalltech/20