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Invert logic for button control #21

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Invert logic for button control #21

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9ca9cf2
invert logic
t0mekk Mar 6, 2018
9e2396c
cleanup
t0mekk Mar 6, 2018
01cb115
Merge branch 'master' of https://github.com/atuline/FastLED-Demos
t0mekk Jun 16, 2018
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10 changes: 8 additions & 2 deletions button_demoReel100/jsbutton.h
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Original file line number Diff line number Diff line change
Expand Up @@ -16,7 +16,6 @@
*
*/


//=================================================
// MULTI-CLICK: One Button, Multiple Events

Expand All @@ -25,7 +24,6 @@ int debounce = 20; // ms debounce period to prevent flickering when pre
int DCgap = 250; // max ms between clicks for a double click event
int holdTime = 1000; // ms 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
Expand All @@ -37,12 +35,20 @@ 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
int invert = 1; // invert true/false

/*
invert If invert == 0, interprets a high state as pressed, low as
* released. If invert != 0, interprets a high state as
* released, low as pressed (can also use true or false).
*/



uint8_t checkButton() {
uint8_t event = 0;
buttonVal = digitalRead(buttonPin);
if (invert !=0) buttonVal = !buttonVal; // invert logic
// Button pressed down
if (buttonVal == LOW && buttonLast == HIGH && (millis() - upTime) > debounce)
{
Expand Down