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@Electronza
Created December 7, 2019 09:13
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Arduino code example for Mikroe C-meter click
// C-meter click is installed in socket #1
// of Arduino Uno click shield
// Pulses will be applied on pin D2
int pin = 2;
// We compute on float
float period;
float Cx;
unsigned long pulse;
void setup()
{
Serial.begin(9600);
pinMode(pin, INPUT);
}
void loop()
{
period = 0;
// We compute the average of four measurements
// one of the reasons I choose float
Serial.println("Measurements");
// Measure first period
pulse= pulseIn(pin, HIGH, 100000000UL);
Serial.println(pulse);
if (pulse ==0){
Serial.println("Pulse too long. reverting to pulseInLong()");
pulse= pulseInLong(pin, HIGH, 1000000000);
Serial.println(pulse);
}
period += pulse;
pulse = pulseIn(pin, LOW, 100000000UL);
if (pulse ==0){
Serial.println("Pulse too long. reverting to pulseInLong()");
pulse= pulseInLong(pin, HIGH, 1000000000);
Serial.println(pulse);
}
period += pulse;
// Measure second period
pulse= pulseIn(pin, HIGH, 100000000UL);
Serial.println(pulse);
if (pulse ==0){
Serial.println("Pulse too long. reverting to pulseInLong()");
pulse= pulseInLong(pin, HIGH, 100000000UL);
Serial.println(pulse);
}
period += pulse;
pulse = pulseIn(pin, LOW, 100000000UL);
if (pulse ==0){
Serial.println("Pulse too long. reverting to pulseInLong()");
pulse= pulseInLong(pin, HIGH, 100000000UL);
Serial.println(pulse);
}
period += pulse;
// Measure third period
pulse= pulseIn(pin, HIGH, 100000000UL);
Serial.println(pulse);
if (pulse ==0){
Serial.println("Pulse too long. reverting to pulseInLong()");
pulse= pulseInLong(pin, HIGH, 100000000UL);
Serial.println(pulse);
}
period += pulse;
pulse = pulseIn(pin, LOW, 100000000UL);
if (pulse ==0){
Serial.println("Pulse too long. reverting to pulseInLong()");
pulse= pulseInLong(pin, HIGH, 100000000UL);
Serial.println(pulse);
}
period += pulse;
// Measure fourth period
pulse= pulseIn(pin, HIGH, 100000000UL);
Serial.println(pulse);
if (pulse ==0){
Serial.println("Pulse too long. reverting to pulseInLong()");
pulse= pulseInLong(pin, HIGH, 100000000UL);
Serial.println(pulse);
}
period += pulse;
pulse = pulseIn(pin, LOW, 100000000UL);
if (pulse ==0){
Serial.println("Pulse too long. reverting to pulseInLong()");
pulse= pulseInLong(pin, HIGH, 100000000UL);
Serial.println(pulse);
}
period += pulse;
// We divide only by four, as the above code measures
// Th and Tl separately
// and one period T = Th + Tl
period = period / 4;
Serial.print("Period is: ");
Serial.print(period);
Serial.println(" us");
Serial.print("Frequency is: ");
Serial.print(1000000/period);
Serial.println(" kHz");
Serial.println("");
Cx = period * 1000 / 77816;
Serial.print("Capacity is: ");
Serial.print(Cx);
Serial.println(" uF");
Serial.println("");
delay(1000);
}
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