Hi, I’m new to Arduino, I have a Teensy 3.2.
i like read the pulses of a rotary encoder and generate or simulate presskeys or close contacts… on an audio system to lower or increase the volume as the encoder rotates . Please ,can you help me to complete a responsive code for teensy?
the volume up or down buttons ,in the audio system, act when closing a respectives contact at low or negative level-
i use a code for usb HID volume knob, and works fine in my windows. i like generate instead a keypressed HID a low level output when vol up and other output low level when volume down. these outputs will be applicatted to the vol up down in the audio system…
Any help
Thanks
my code is :
/* Volume knob with pushbutton mute toggle
* based on blink teensy example and encoder example
*/
#include <Bounce.h>
#define ENCODER_OPTIMIZE_INTERRUPTS
#include <Encoder.h>
//control serial output to terminal
bool serial_out = false;
Encoder myEnc(4,5); //quad encoder on PD0, PD1
Bounce button7 = Bounce(7, 10); //SW on PD2
// Teensy 2.0 has the LED on pin 11
// Teensy++ 2.0 has the LED on pin 6
// Teensy 3.x / Teensy LC have the LED on pin 13
const int ledPin = 13;
int pulse_duration = 300; //length of LED pulse wait for on/off
int pulse_count = 3; //num of led pulses
bool detect = false;
long skip_val = 7;
// the setup() method runs once, when the sketch starts
const int led1 = LED_BUILTIN;
void setup() {
// initialize the digital pin as an output.
pinMode(ledPin, OUTPUT); //led output
boot_blink(); //flash on-board LED to show sign of life
pinMode(14, OUTPUT);
pinMode(15, OUTPUT);
pinMode(led1, OUTPUT);
//init input pins D0,D1,D3 for pushbuttons with pullups, short to ground for input
pinMode(7, INPUT_PULLUP);
if(serial_out == true)
{
Serial.begin(9600);
Serial.println("Basic Encoder Test:");
}
}
long oldPosition = -999;
void boot_blink() {
while(pulse_count >= 1){
digitalWrite(ledPin, HIGH); // set the LED on
delay(pulse_duration); // wait for a second
digitalWrite(ledPin, LOW); // set the LED off
delay(pulse_duration); // wait for a second
pulse_count--;
}
}
// the loop() methor runs over and over again,
// as long as the board has power
void loop() {
//update inputs
button7.update();
long newPosition = myEnc.read();
/*
if(newPosition != oldPosition){
oldPosition = newPosition;
Serial.println(newPosition);
}
*/
//volume up event
if(newPosition > (oldPosition+skip_val)){
oldPosition = newPosition;
Keyboard.press(KEY_MEDIA_VOLUME_INC);
Keyboard.release(KEY_MEDIA_VOLUME_INC);
digitalWrite(14, HIGH);
delay (5);
digitalWrite(14, LOW);
digitalWrite(led1, HIGH);
delay (5);
digitalWrite(led1, LOW);
if(serial_out == true){
Serial.println(newPosition);
Serial.println("Up");
}
}
//volume down event
if(newPosition < (oldPosition-skip_val))
{
oldPosition = newPosition;
Keyboard.press(KEY_MEDIA_VOLUME_DEC);
Keyboard.release(KEY_MEDIA_VOLUME_DEC);
digitalWrite(15, HIGH);
delay (5);
digitalWrite(15, LOW);
digitalWrite(led1, HIGH);
delay (5);
digitalWrite(led1, LOW);
if(serial_out == true){
Serial.println(newPosition);
Serial.println("Down");
}
}
//toggle audio mute with pushbutton
if (button7.fallingEdge()) {
Keyboard.press(KEY_MEDIA_MUTE);
Keyboard.release(KEY_MEDIA_MUTE);
if(serial_out == true){
Serial.println("MUTE");
}
}
/* boot blink on pushbutton loop
if (button7.fallingEdge()) {
pulse_duration = 50;
detect = true;
}
if(detect != false){
boot_blink();
detect = false;
}
*/
}