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Merge pull request #4 from Spirik/secondary-press-support
Support for secondary key press; `triggerRelease` property
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,107 @@ | ||
| /* | ||
| Rotary encoder readings using KeyDetector library. | ||
| Demonstrates how to use KeyDetector to trigger action based on digital signal readings from rotary encoder with button. | ||
| Rotating the knob and pressing button at the same time will print corresponding message. | ||
| Additional info (including the breadboard view) available on GitHub: | ||
| https://github.com/Spirik/KeyDetector | ||
| This example code is in the public domain. | ||
| */ | ||
|
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| #include <KeyDetector.h> | ||
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| // Define signal identifiers for three outputs of encoder (channel A, channel B and a push-button) | ||
| #define KEY_A 1 | ||
| #define KEY_B 2 | ||
| #define KEY_C 3 | ||
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| // Pins encoder is connected to | ||
| const byte channelA = 2; | ||
| const byte channelB = 3; | ||
| const byte buttonPin = 4; | ||
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| // Array of Key objects that will link GEM key identifiers with dedicated pins | ||
| // (it is only necessary to detect signal change on a single channel of the encoder, either A or B; | ||
| // order of the channel and push-button Key objects in an array is not important) | ||
| Key keys[] = {{KEY_A, channelA}, {KEY_C, buttonPin}}; | ||
| //Key keys[] = {{KEY_C, buttonPin}, {KEY_A, channelA}}; | ||
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| // Create KeyDetector object | ||
| // KeyDetector myKeyDetector(keys, sizeof(keys)/sizeof(Key)); | ||
| // To account for switch bounce effect of the buttons (if occur) you may want to specify debounceDelay | ||
| // as the third argument to KeyDetector constructor. | ||
| // Make sure to adjust debounce delay to better fit your rotary encoder. | ||
| // Also it is possible to enable pull-up mode when buttons wired with pull-up resistors (as in this case). | ||
| // Analog threshold is not necessary for this example and is set to default value 16. | ||
| KeyDetector myKeyDetector(keys, sizeof(keys)/sizeof(Key), /* debounceDelay= */ 5, /* analogThreshold= */ 16, /* pullup= */ true); | ||
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| void setup() { | ||
| // Serial communications setup | ||
| Serial.begin(115200); | ||
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| // Pin modes set to INPUT_PULLUP with internal pullup resistors activated | ||
| // (alternatively it is possible to connect terminals using external pullup 10kOhm resistors and INPUT mode) | ||
| pinMode(channelA, INPUT_PULLUP); | ||
| pinMode(channelB, INPUT_PULLUP); | ||
| pinMode(buttonPin, INPUT_PULLUP); | ||
|
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| Serial.println("Sketch loaded. Interact with encoder."); | ||
| } | ||
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| void loop() { | ||
| myKeyDetector.detect(); | ||
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| // Press event (e.g. when button was pressed or channel A signal chaged to HIGH) | ||
| switch (myKeyDetector.trigger) { | ||
| case KEY_A: | ||
| //Signal from Channel A of encoder was detected | ||
| if (digitalRead(channelB) == LOW) { | ||
| // If channel B is LOW then the knob was rotated CW | ||
| if (myKeyDetector.current == KEY_C) { | ||
| Serial.println("Rotation CW with button pressed"); | ||
| } else { | ||
| Serial.println("Rotation CW"); | ||
| } | ||
| } else { | ||
| // If channel B is HIGH then the knob was rotated CCW | ||
| if (myKeyDetector.current == KEY_C) { | ||
| Serial.println("Rotation CCW with button pressed"); | ||
| } else { | ||
| Serial.println("Rotation CCW"); | ||
| } | ||
| } | ||
| break; | ||
| case KEY_C: | ||
| //Button was pressed | ||
| Serial.println("Button pressed"); | ||
| break; | ||
| } | ||
|
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||
| // Release event (e.g. when button was released or channel A signal changed to LOW) | ||
| switch (myKeyDetector.triggerRelease) { | ||
| case KEY_A: | ||
| //Signal from Channel A of encoder was detected | ||
| if (digitalRead(channelB) == LOW) { | ||
| // If channel B is LOW then the knob was rotated CCW | ||
| if (myKeyDetector.current == KEY_C) { | ||
| Serial.println("Rotation CCW with button pressed (release)"); | ||
| } else { | ||
| Serial.println("Rotation CCW (release)"); | ||
| } | ||
| } else { | ||
| // If channel B is HIGH then the knob was rotated CW | ||
| if (myKeyDetector.current == KEY_C) { | ||
| Serial.println("Rotation CW with button pressed (release)"); | ||
| } else { | ||
| Serial.println("Rotation CW (release)"); | ||
| } | ||
| } | ||
| break; | ||
| case KEY_C: | ||
| // Button was released | ||
| Serial.println("Button released"); | ||
| break; | ||
| } | ||
| } |
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