/***************************************************************************
* Example sketch for the ADS1115_WE library
*
* This sketch shows how to use two ADS1115 modules. In order to set the address, 
* connect the address pin to:
* 
* GND -> 0x48 (or leave unconnected)
* VCC -> 0x49
* SDA -> 0x4A
* SCL -> 0x4B
* 
* When you have understood how it works you can easily add two additional ADS1115.
* Of course there is potential to shorten the code, e.g. by setting up the ADCs 
* as array.
* 
* If you need up to eight ADS1115 modules you can use an ESP32 with its two I2C 
* interfaces:
* https://wolles-elektronikkiste.de/en/how-to-use-the-i2c-interfaces-of-the-esp32 
* 
* If you need up to 32 ADS1115 modules you can use a multiplexer like the TSCA9548A:
* https://wolles-elektronikkiste.de/en/tca9548a-i2c-multiplexer
*  
* Or you combine both and control up to 64 ADS1115 modules.
*  
* Further information about the ADS1115 can be found on:
* https://wolles-elektronikkiste.de/ads1115 (German)
* https://wolles-elektronikkiste.de/en/ads1115-a-d-converter-with-amplifier (English)
* 
***************************************************************************/

#include<ADS1115_WE.h> 
#include<Wire.h>
#define I2C_ADDRESS_1  0x48
#define I2C_ADDRESS_2  0x49

ADS1115_WE adc_1 = ADS1115_WE(I2C_ADDRESS_1);
ADS1115_WE adc_2 = ADS1115_WE(I2C_ADDRESS_2);

void setup() {
  Wire.begin();
  Serial.begin(9600);
  
  if(!adc_1.init()){
    Serial.print("ADS1115 No 1 not connected!");
  }
  adc_1.setVoltageRange_mV(ADS1115_RANGE_6144);
  adc_1.setMeasureMode(ADS1115_CONTINUOUS); 
  adc_1.setCompareChannels(ADS1115_COMP_0_GND);
  
  if(!adc_2.init()){
    Serial.print("ADS1115 No 2 not connected!");
  }
  adc_2.setVoltageRange_mV(ADS1115_RANGE_6144);
  adc_2.setMeasureMode(ADS1115_CONTINUOUS); 
  adc_2.setCompareChannels(ADS1115_COMP_0_GND);
}

void loop() {
  float voltage = 0.0;
  
  voltage = adc_1.getResult_V();
  Serial.println("Voltage [V], ADS1115 No 1: ");
  Serial.println(voltage);

  voltage = adc_2.getResult_V();
  Serial.println("Voltage [V], ADS1115 No 2: ");
  Serial.println(voltage);
 
  Serial.println("****************************");  
  delay(1000);
}