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@@ -0,0 +1,154 @@
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+// CLOCKWORK Keypad Arduino driver
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+// For more information please visit https://forum.clockworkpi.com
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+// HAPPY HACKING
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+
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+#include "UsbKeyboard.h"
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+
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+#define KEY_ENTER 0x28 // Keyboard Return (ENTER)
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+#define KEY_ESCAPE 0x29 // Keyboard Escape
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+#define KEY_BACKSPACE 0x2A // Keyboard Backspace
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+#define KEY_SPACE 0x2C // Keyboard Space
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+#define KEY_DASH 0x2D // Keyboard - and _
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+#define KEY_EQUAL 0x2E // Keyboard = and +
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+#define KEY_HOME 0x4A // Keyboard Home
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+#define KEY_PAGE_UP 0x4B // Keyboard Page Up
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+#define KEY_END 0x4D // Keyboard End
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+#define KEY_PAGE_DOWN 0x4E // Keyboard Page Down
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+#define KEY_RIGHT_ARROW 0x4F // Keyboard Right Arrow
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+#define KEY_LEFT_ARROW 0x50 // Keyboard Left Arrow
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+#define KEY_DOWN_ARROW 0x51 // Keyboard Down Arrow
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+#define KEY_UP_ARROW 0x52 // Keyboard Up Arrow
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+#define KEY_NUM_DASH 0x56 // Keyboard Num Pad -
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+#define KEY_NUM_PLUS 0x57 // Keyboard Num Pad +
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+
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+#define KEY_OFF 1
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+#define KEY_ON 0
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+#define ADC_BOUNDARY 500
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+#define DIGITAL_KEY_NUM 9
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+#define ANALOG_KEY_NUM 6
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+#define KEY_NUM (DIGITAL_KEY_NUM + ANALOG_KEY_NUM)
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+#define SHIFT_KEY_NUM 2
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+#define KEY_NULL 0xff
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+
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+#define KEYPAD_UP KEY_UP_ARROW
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+#define KEYPAD_LEFT KEY_LEFT_ARROW
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+#define KEYPAD_DOWN KEY_DOWN_ARROW
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+#define KEYPAD_RIGHT KEY_RIGHT_ARROW
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+#define KEYPAD_Y KEY_I
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+#define KEYPAD_X KEY_U
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+#define KEYPAD_A KEY_J
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+#define KEYPAD_B KEY_K
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+#define KEYPAD_MENU KEY_ESCAPE
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+#define KEYPAD_SELECT KEY_SPACE
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+#define KEYPAD_START KEY_ENTER
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+#define KEYPAD_LIGHT1 KEY_L
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+#define KEYPAD_LIGHT2 KEY_O
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+#define KEYPAD_LIGHT4 KEY_Y
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+#define KEYPAD_LIGHT5 KEY_H
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+
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+#define KEYPAD_UP_SHIFT KEY_UP_ARROW
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+#define KEYPAD_LEFT_SHIFT KEY_LEFT_ARROW
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+#define KEYPAD_DOWN_SHIFT KEY_DOWN_ARROW
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+#define KEYPAD_RIGHT_SHIFT KEY_RIGHT_ARROW
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+#define KEYPAD_Y_SHIFT KEY_O
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+#define KEYPAD_X_SHIFT KEY_Y
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+#define KEYPAD_A_SHIFT KEY_H
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+#define KEYPAD_B_SHIFT KEY_L
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+#define KEYPAD_MENU_SHIFT KEY_BACKSPACE
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+#define KEYPAD_SELECT_SHIFT KEY_NUM_DASH
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+#define KEYPAD_START_SHIFT KEY_NUM_PLUS
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+#define KEYPAD_LIGHT1_SHIFT KEY_END
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+#define KEYPAD_LIGHT2_SHIFT KEY_PAGE_DOWN
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+#define KEYPAD_LIGHT4_SHIFT KEY_PAGE_UP
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+#define KEYPAD_LIGHT5_SHIFT KEY_HOME
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+
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+const int pins[KEY_NUM] = {3, 6, 7, 8, 9, 10, 11, 12, 13, 0, 2, 3, 4, 6, 7};
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+const int shift_pins[SHIFT_KEY_NUM] = {1, 5};
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+
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+const int keys[KEY_NUM] =
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+{
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+ KEYPAD_UP, KEYPAD_LEFT, KEYPAD_DOWN, KEYPAD_RIGHT, KEYPAD_Y, KEYPAD_X, KEYPAD_A, KEYPAD_B, KEYPAD_START,
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+ KEYPAD_MENU, KEYPAD_SELECT, KEYPAD_LIGHT1, KEYPAD_LIGHT2, KEYPAD_LIGHT4, KEYPAD_LIGHT5
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+};
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+const int shift_keys[KEY_NUM] =
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+{
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+ KEYPAD_UP_SHIFT, KEYPAD_LEFT_SHIFT, KEYPAD_DOWN_SHIFT, KEYPAD_RIGHT_SHIFT, KEYPAD_Y_SHIFT, KEYPAD_X_SHIFT, KEYPAD_A_SHIFT, KEYPAD_B_SHIFT, KEYPAD_START_SHIFT,
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+ KEYPAD_MENU_SHIFT, KEYPAD_SELECT_SHIFT, KEYPAD_LIGHT1_SHIFT, KEYPAD_LIGHT2_SHIFT, KEYPAD_LIGHT4_SHIFT, KEYPAD_LIGHT5_SHIFT
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+};
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+
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+int old_keys[KEY_NUM];
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+
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+bool shift_key_pressed()
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+{
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+ for(int i = 0; i < SHIFT_KEY_NUM; i++)
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+ {
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+ if(analogRead(shift_pins[i]) /ADC_BOUNDARY == KEY_ON)
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+ return true;
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+ }
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+ return false;
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+}
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+
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+void setup()
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+{
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+ TIMSK0 &= !(1 << TOIE0);
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+
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+ for(int i = 0; i < KEY_NUM; i++)
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+ {
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+ if(i < DIGITAL_KEY_NUM)
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+ {
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+ pinMode(pins[i], INPUT);
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+ }
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+ old_keys[i] = KEY_NULL;
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+ }
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+ Serial.begin(115200);
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+}
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+
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+void loop()
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+{
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+ int on_off, key;
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+
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+ UsbKeyboard.update();
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+ delay(1000);
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+
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+ for(int i = 0; i < KEY_NUM; i++)
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+ {
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+ if( i < DIGITAL_KEY_NUM)
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+ {
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+ on_off = digitalRead(pins[i]);
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+ }
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+ else
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+ {
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+ on_off = analogRead(pins[i])/ADC_BOUNDARY;
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+ }
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+
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+ if(on_off == KEY_OFF)
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+ {
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+ if(old_keys[i] != KEY_NULL)
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+ {
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+ UsbKeyboard.release(old_keys[i]);
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+ old_keys[i] = KEY_NULL;
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+ }
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+ }
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+ else
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+ {
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+ if(shift_key_pressed())
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+ {
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+ key = shift_keys[i];
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+ }
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+ else
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+ {
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+ key = keys[i];
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+ }
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+
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+ if(key != old_keys[i])
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+ {
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+ if(old_keys[i] != KEY_NULL)
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+ {
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+ UsbKeyboard.release(old_keys[i]);
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+ }
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+ UsbKeyboard.press(key);
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+ old_keys[i] = key;
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+ }
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+ }
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+ }
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+}
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