45 lines
1.7 KiB
C++
45 lines
1.7 KiB
C++
#include <Adafruit_ADS1X15.h>
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// Adafruit_ADS1115 ads; /* Use this for the 16-bit version */
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Adafruit_ADS1015 ads; /* Use this for the 12-bit version */
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void setup(void)
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{
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Serial.begin(9600);
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Serial.println("Hello!");
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Serial.println("Single-ended readings from AIN0 with >3.0V comparator");
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Serial.println("ADC Range: +/- 6.144V (1 bit = 3mV/ADS1015, 0.1875mV/ADS1115)");
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Serial.println("Comparator Threshold: 1000 (3.000V)");
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// The ADC input range (or gain) can be changed via the following
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// functions, but be careful never to exceed VDD +0.3V max, or to
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// exceed the upper and lower limits if you adjust the input range!
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// ADS1015 ADS1115
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// ------- -------
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// ads.setGain(GAIN_TWOTHIRDS); // 2/3x gain +/- 6.144V 1 bit = 3mV 0.1875mV (default)
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// ads.setGain(GAIN_ONE); // 1x gain +/- 4.096V 1 bit = 2mV 0.125mV
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// ads.setGain(GAIN_TWO); // 2x gain +/- 2.048V 1 bit = 1mV 0.0625mV
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// ads.setGain(GAIN_FOUR); // 4x gain +/- 1.024V 1 bit = 0.5mV 0.03125mV
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// ads.setGain(GAIN_EIGHT); // 8x gain +/- 0.512V 1 bit = 0.25mV 0.015625mV
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// ads.setGain(GAIN_SIXTEEN); // 16x gain +/- 0.256V 1 bit = 0.125mV 0.0078125mV
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if (!ads.begin()) {
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Serial.println("Failed to initialize ADS.");
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while (1);
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}
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// Setup 3V comparator on channel 0
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ads.startComparator_SingleEnded(0, 1000);
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}
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void loop(void)
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{
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int16_t adc0;
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// Comparator will only de-assert after a read
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adc0 = ads.getLastConversionResults();
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Serial.print("AIN0: "); Serial.println(adc0);
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delay(100);
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}
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