I'm scratching my head a little on this but I'm sure I'm over thinking it.
I looking to have two different button presses on an input to output two different keystrokes via USB.
eg.
normal key press = x
hold key press = y
My code in the loop is:
if (digitalRead(8)==LOW){
Keyboard.print("9");
delay(200);}
I was thinking something along the lines of if (digitalRead(8)==LOW) then using a counter to somehow count the button press but im not sure if that will work
But this wud create a delay of 100ms for every keystroke... is that fine or not for you project?
There must be a method without this delay, im thinking over it...
and its working except I have all the inputs setup up to write their key in ASCII using Keyboard.write()
so when I hold a button it will print all the BUTTON PRESS keys or all the BUTTON HOLD keys depending on the button state.
eg.
void clickEvent() {
//if the button is pressed
if(digitalRead(0)==LOW){
//Send the ASCII Key [0]
Keyboard.write(48);
delay(200);}
if (digitalRead(1)==LOW){
//Send the ASCII Key [1]
Keyboard.write(49);
delay(200);}
// HOLDEvents to trigger
void holdEvent() {
//if the button is pressed
if(digitalRead(0)==LOW){
//Send the ASCII Key [k]
Keyboard.write(107);
delay(200);}
if (digitalRead(1)==LOW){
//Send the ASCII Key [l]
Keyboard.write(108);
delay(200);}
The output I'm getting is CLICK = 01 and HOLD = kl
How would I get it to only print the single input per button press
Tip: try not to use delay() it is a blocking function that means the Arduino will sit there and do nothing for the defined time. Check out Robin2 thread for more information. forum.arduino.cc/index.php?topic=223286.0
I've got it so it will type on HOLD Pin( 8 ) only........
void setup()
{
//Build in delay for testing!!!
//delay(20000);
// Initize inputs for wired USB interface
pinMode(8, INPUT_PULLUP);
pinMode(9, INPUT_PULLUP);
pinMode(10, INPUT_PULLUP);
pinMode(11, INPUT_PULLUP);
Keyboard.begin();
}
void loop()
{
// Get button event and act accordingly
int b = checkButton();
if (b == 1) clickEvent();
//if (b == 2) doubleClickEvent();
if (b == 3) holdEvent();
//if (b == 4) longHoldEvent();
}
//=================================================
// CLICK Events to trigger
void clickEvent() {
if(digitalRead(8)==LOW){
//Send the message
Keyboard.print("9");
delay(200);}
if (digitalRead(9)==LOW){
//Send the message
Keyboard.print("0");
delay(200);}
if(digitalRead(10)==LOW){
//Send the message
Keyboard.print("q");
delay(200);}
if (digitalRead(11)==LOW){
//Send the message
Keyboard.print("w");
delay(200);}
}
//=================================================
// HOLDEvents to trigger
void holdEvent() {
if(digitalRead(8)==LOW){
//Send the message
Keyboard.print("l");
delay(200);}
if (digitalRead(9)==LOW){
//Send the message
Keyboard.print("z");
delay(200);}
if(digitalRead(10)==LOW){
//Send the message
Keyboard.print("x");
delay(200);}
if (digitalRead(11)==LOW){
//Send the message
Keyboard.print("c");
delay(200);}
}
//=================================================
// MULTI-CLICK: One Button, Multiple Events
// Button timing variables
int debounce = 0; // Default = 20ms. ms debounce period to prevent flickering when pressing or releasing the button
int DCgap = 200; // Default = 250ms. max ms between clicks for a double click event
int holdTime = 1000; // ms hold period: how long to wait for press+hold event
int longHoldTime = 3000; // ms long hold period: how long to wait for press+hold event
// Button variables
boolean buttonVal = HIGH; // value read from button
boolean buttonLast = HIGH; // buffered value of the button's previous state
boolean DCwaiting = false; // whether we're waiting for a double click (down)
boolean DConUp = false; // whether to register a double click on next release, or whether to wait and click
boolean singleOK = true; // whether it's OK to do a single click
long downTime = -1; // time the button was pressed down
long upTime = -1; // time the button was released
boolean ignoreUp = false; // whether to ignore the button release because the click+hold was triggered
boolean waitForUp = false; // when held, whether to wait for the up event
boolean holdEventPast = false; // whether or not the hold event happened already
boolean longHoldEventPast = false;// whether or not the long hold event happened already
int checkButton() {
int event = 0;
buttonVal = digitalRead(8);
// Button pressed down
if (buttonVal == LOW && buttonLast == HIGH && (millis() - upTime) > debounce)
{
downTime = millis();
ignoreUp = false;
waitForUp = false;
singleOK = true;
holdEventPast = false;
longHoldEventPast = false;
if ((millis()-upTime) < DCgap && DConUp == false && DCwaiting == true) DConUp = true;
else DConUp = false;
DCwaiting = false;
}
// Button released
else if (buttonVal == HIGH && buttonLast == LOW && (millis() - downTime) > debounce)
{
if (not ignoreUp)
{
upTime = millis();
if (DConUp == false) DCwaiting = true;
else
{
event = 2;
DConUp = false;
DCwaiting = false;
singleOK = false;
}
}
}
// Test for normal click event: DCgap expired
if ( buttonVal == HIGH && (millis()-upTime) >= DCgap && DCwaiting == true && DConUp == false && singleOK == true && event != 2)
{
event = 1;
DCwaiting = false;
}
// Test for hold
if (buttonVal == LOW && (millis() - downTime) >= holdTime) {
// Trigger "normal" hold
if (not holdEventPast)
{
event = 3;
waitForUp = true;
ignoreUp = true;
DConUp = false;
DCwaiting = false;
//downTime = millis();
holdEventPast = true;
}
// Trigger "long" hold
if ((millis() - downTime) >= longHoldTime)
{
if (not longHoldEventPast)
{
event = 4;
longHoldEventPast = true;
}
}
}
buttonLast = buttonVal;
return event;
}
Any feedback is greatly appreciated as I'm currently pulling my hair out yet enjoying my arduino.
Maestr0:
I've got it so it will type on HOLD Pin( 8 ) only........
Does that mean you want the same behaviour for several buttons.
I had assumed from your Original Post "I looking to have two different button presses on an input to output two different keystrokes" that you only wanted to use one button.
I suspect that if you want to have multiple actions on multiple buttons you will need to sit back with a cup of coffee (or 5) and figure out how to abstract the essence of the code so it can apply to (say) an array of pins. (Each pin relating to one button).
I would also spend time (perhaps 2 cups of coffee) thinking seriously whether you actually require what you think you require.
Tell us what you are trying to achieve rather then how you think it might be done
