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/***************************************************************************
* Example sketch for the ADS1115_WE library
*
* This sketch shows how to obtain results using different scales / formats.
*
* Further information 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 0x48
/* There are several ways to create your ADS1115_WE object:
* ADS1115_WE adc = ADS1115_WE(); -> uses Wire / I2C Address = 0x48
* ADS1115_WE adc = ADS1115_WE(I2C_ADDRESS); -> uses Wire / I2C_ADDRESS
* ADS1115_WE adc = ADS1115_WE(&Wire); -> you can pass any TwoWire object / I2C Address = 0x48
* ADS1115_WE adc = ADS1115_WE(&Wire, I2C_ADDRESS); -> all together
*/
ADS1115_WE adc = ADS1115_WE(I2C_ADDRESS);
void setup() {
Wire.begin();
Serial.begin(9600);
if(!adc.init()){
Serial.println("ADS1115 not connected!");
}
adc.setVoltageRange_mV(ADS1115_RANGE_6144); //comment line/change parameter to change range
adc.setCompareChannels(ADS1115_COMP_0_GND); //comment line/change parameter to change channel
adc.setMeasureMode(ADS1115_CONTINUOUS); //comment line/change parameter to change mode
Serial.println("ADS1115 Example Sketch - Results in different scales / formats");
Serial.println("All results are for channel 0 vs. GND");
Serial.println();
}
void loop() {
/* Output in Volt or in Millivolt */
float voltageInMillivolt = adc.getResult_mV();
Serial.print("Result in Millivolt [mV]: ");
Serial.println(voltageInMillivolt);
float voltageInVolt = adc.getResult_V();
Serial.print("Result in Volt [V]: ");
Serial.println(voltageInVolt);
/* Get the raw result from the conversion register. The conversion register
* contains the conversion result of the amplified (!) voltage. This means the
* value depends on the voltage as well as on the voltage range. E.g. if the
* voltage range is 6144 mV (ADS1115_RANGE_6144), +32767 is 6144 mV; if the
* range is 4096 mV, +32767 is 4096 mV, and so on.
*/
int rawResult = adc.getRawResult();
Serial.print("Raw Result : ");
Serial.println(rawResult);
/* Scaling of the result to a different range:
* The results in the conversion register are in a range of -32767 to +32767
* You might want to receive the result in a different scale, e.g. -1023 to 1023.
* For -1023 to 1023, and if you have chosen e.g. ADS1115_RANGE_4096, 0 Volt would
* give 0 as result and 4096 mV would give 1023. -4096 mV would give -1023.
*/
int scaledResult = adc.getResultWithRange(-1023, 1023);
Serial.print("Scaled result : ");
Serial.println(scaledResult);
/* Scaling of the result to a different range plus scaling to a voltage range:
* You can use this variant if you also want to scale to a voltage range. E.g. in
* in order to get results equivalent to an Arduino UNO (10 bit, 5000 mV range), you
* would choose getResultWithRange(-1023, 1023, 5000). A difference to the Arduino
* UNO is that you can measure negative voltages.
* You have to ensure that the voltage range you scale to is smaller than the
* measuring voltage range. For this example only ADS1115_RANGE_6144 would cover the
* scale up to 5000 mV.
*/
int scaledResultWithMaxVoltage = adc.getResultWithRange(-1023, 1023, 5000);
Serial.print("Scaled result with voltage scale : ");
Serial.println(scaledResultWithMaxVoltage);
/* This function returns the voltage range ADS1115_RANGE_XXXX in Millivolt */
unsigned int voltRange = adc.getVoltageRange_mV();
Serial.print("Voltage Range of ADS1115 [mV]: ");
Serial.println(voltRange);
Serial.println("-------------------------------");
delay(2000);
}
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