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Author: avandalen

examples/Test_freqPeriodCounter/Test_FreqPeriodCounter.ino

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+#include <FreqPeriodCounter.h>
+//#include <Albert.h>
+#include <Streaming.h>
+#include <TimerOne.h> 
+
+/* Note: connect d3 to d9 */
+
+const byte counterPin = 3; // connect d3 to d9
+const byte counterInterrupt = 1; // = d3
+const byte PWMpin = 9; // PWM only d9 or d10
+//const byte buzzerPin = 8;
+//const int PiezoBuzzerFreq = 2400;
+
+FreqPeriodCounter counter(counterPin, micros);
+
+void setup(void) 
+{ Serial.begin(9600); 
+  //tone(buzzerPin, PiezoBuzzerFreq, 20);
+  pinMode(PWMpin, OUTPUT);  
+  Timer1.initialize(); 
+  testAll();
+  Timer1.pwm(PWMpin, 300, 20000); // duty cycle [10 bit], period [us] <8388480 
+  attachInterrupt(counterInterrupt, counterISR, CHANGE);
+}
+
+void loop(void) 
+{ if(!counter.ready()) Serial << "\nwaiting";
+  else Serial << endl << counter.level, counter.period, counter.pulseWidth, counter.pulseWidthLow; 
+}
+
+void counterISR()
+{ counter.poll();
+}
+