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50 lines
995 B
C++
50 lines
995 B
C++
//
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// FILE: ACS712_detectFrequency.ino
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// AUTHOR: Rob Tillaart
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// PURPOSE: demo detect frequency + timing indication.
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// URL: https://github.com/RobTillaart/ACS712
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#include "ACS712.h"
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// Arduino UNO has 5.0 volt with a max ADC value of 1023 steps
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// ACS712 5A uses 185 mV per A
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// ACS712 20A uses 100 mV per A
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// ACS712 30A uses 66 mV per A
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ACS712 ACS(A0, 5.0, 1023, 100);
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// ESP 32 example (might requires resistors to step down the logic voltage)
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// ACS712 ACS(25, 3.3, 4095, 185);
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uint32_t start, stop;
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void setup()
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{
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Serial.begin(115200);
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while (!Serial);
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Serial.println(__FILE__);
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Serial.print("ACS712_LIB_VERSION: ");
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Serial.println(ACS712_LIB_VERSION);
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}
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void loop()
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{
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// e.g. detect 50 or 60 Hz sinus signal
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// blocks on bad signals.
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start = micros();
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float frequency = ACS.detectFrequency(45);
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stop = micros();
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Serial.print(stop - start);
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Serial.print("\t");
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Serial.println(frequency, 1);
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delay(100);
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}
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// -- END OF FILE --
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