setDigitalFilter()

Description

Set digital filter function on pin A, B and Z, to filter noise within a specified range.

Note: In the pulse capture mode, this function can only be used prior to the attachInterrupt(), pulseIn() and pulseInNanoseconds() function within the Encoder library.

Syntax


Enc0.setDigitalFilter(val)
Enc1.setDigitalFilter(val)
Enc2.setDigitalFilter(val)
Enc3.setDigitalFilter(val)


Parameters

Enc0、Enc1、Enc2、Enc3：Corresponding to ENC0, ENC1, ENC2 and ENC3 encoder interfaces.

val：Variable (unsigned long) to specify the maximum range of the noise to be filtered, in 10 nano-second (ns).

Returns

None

Example

#include <Encoder.h>
 
void setup() {
  Serial.begin(9600);
  Enc0.begin(MODE_AB_PHASE);
  Enc0.setDigitalFilter(20L); // Filter noise below 200 ns
}
 
void loop() {
  Serial.println(Enc0.read());
  delay(100);
}

See also

－ begin()
－ read()

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