hussainfawzi/ads1115-16bit-adc/ads1115-16bit-adc

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ads1115-16bit-adc

@/ads1115-16bit-adc

ADDRbyte

Device adress on I2C bus.

GAINnumber

Set the PGA gain

UPDATEpulse

Feed a pulse signal to conduct analog reading.

DONEpulse

Spits a pulse when done reading.

A2-3number

Spits the latest value of channel A2 - A3 (differential reading).

A0-1number

Spits the latest value of channel A0 - A1 (differential reading).

A3number

Spits the latest value of channel A3

A2number

Spits the latest value of channel A2

A1number

Spits the latest value of channel A1

A0number

Spits the latest value of channel A0

To use the node in your project you should have the hussainfawzi/ads1115-16bit-adc library installed. Use the “File → Add Library” menu item in XOD IDE if you don’t have it yet. See Using libraries for more info.

#pragma XOD require "https://github.com/adafruit/Adafruit_ADS1X15"

#pragma XOD evaluate_on_pin disable
#pragma XOD evaluate_on_pin enable input_UPDATE
#pragma XOD error_raise enable

{{#global}}
#include <Wire.h>
#include <Adafruit_ADS1015.h>
{{/global}}

struct State {
};

{{ GENERATED_CODE }}

void evaluate(Context ctx) {
    if (!isInputDirty<input_UPDATE>(ctx))
        return;

    Number address = getValue<input_ADDR>(ctx);
    Adafruit_ADS1115 ads(address);
    ads.begin();
    auto gain = getValue<input_GAIN>(ctx);
    if(gain==0.66){ads.setGain(GAIN_TWOTHIRDS);}    // 2/3x gain +/- 6.144V  1 bit = 0.1875mV
    else if(gain==1){ads.setGain(GAIN_ONE);}             // 1x gain   +/- 4.096V  1 bit = 0.125mV
    else if(gain==2){ads.setGain(GAIN_TWO);}             // 2x gain   +/- 2.048V  1 bit = 0.0625mV
    else if(gain==4){ads.setGain(GAIN_FOUR);}            // 4x gain   +/- 1.024V  1 bit = 0.03125mV
    else if(gain==8){ads.setGain(GAIN_EIGHT);}           // 8x gain   +/- 0.512V  1 bit = 0.015625mV
    else if(gain==16){ads.setGain(GAIN_SIXTEEN);}        // 16x gain  +/- 0.256V  1 bit = 0.0078125mV
    int16_t buffer;
    buffer=ads.readADC_SingleEnded(0); emitValue<output_A0>(ctx, buffer);
    buffer=ads.readADC_SingleEnded(1); emitValue<output_A1>(ctx, buffer);
    buffer=ads.readADC_SingleEnded(2); emitValue<output_A2>(ctx, buffer);
    buffer=ads.readADC_SingleEnded(3); emitValue<output_A3>(ctx, buffer);
    buffer=ads.readADC_Differential_0_1(); emitValue<output_A0_1>(ctx, buffer);
    buffer=ads.readADC_Differential_2_3(); emitValue<output_A2_3>(ctx, buffer);
    emitValue<output_DONE>(ctx, 1);
};

ads1115-16bit-adc

hussainfawzi/ads1115-16bit-adc/ads1115-16bit-adc

C++ implementation