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libraries/ACS712/examples/ACS712_autoMidPointDC/ACS712_autoMidPointDC.ino

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+//
+//    FILE: ACS712_autoMidPointDC.ino
+//  AUTHOR: Rob Tillaart
+// PURPOSE: demo detect DC midpoint.
+//     URL: https://github.com/RobTillaart/ACS712
+
+
+#include "ACS712.h"
+
+
+//  Arduino UNO has 5.0 volt with a max ADC value of 1023 steps
+//  ACS712 5A  uses 185 mV per A
+//  ACS712 20A uses 100 mV per A
+//  ACS712 30A uses  66 mV per A
+ACS712  ACS(A0, 5.0, 1023, 100);
+//  ESP 32 example (might requires resistors to step down the logic voltage)
+//  ACS712  ACS(25, 3.3, 4095, 185);
+
+
+uint32_t start, stop;
+
+uint16_t midPoint = 0;
+
+void setup()
+{
+  Serial.begin(115200);
+  while (!Serial);
+  Serial.println(__FILE__);
+  Serial.print("ACS712_LIB_VERSION: ");
+  Serial.println(ACS712_LIB_VERSION);
+  delay(10);
+
+  //  might be different 1 cycle or 100.
+  start = micros();
+  midPoint = ACS.autoMidPointDC(1);
+  stop = micros();
+  Serial.println("ACS.autoMidPointDC()");
+  Serial.print("us:\t");
+  Serial.println(stop - start);
+  Serial.print("MP 1:\t");
+  Serial.println(midPoint);
+  
+  midPoint = ACS.autoMidPointDC(100);
+  Serial.print("MP 100:\t");
+  Serial.println(midPoint);
+}
+
+
+void loop()
+{
+}
+
+
+//  -- END OF FILE --