first commit

include/README

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+
+This directory is intended for project header files.
+
+A header file is a file containing C declarations and macro definitions
+to be shared between several project source files. You request the use of a
+header file in your project source file (C, C++, etc) located in `src` folder
+by including it, with the C preprocessing directive `#include'.
+
+```src/main.c
+
+#include "header.h"
+
+int main (void)
+{
+ ...
+}
+```
+
+Including a header file produces the same results as copying the header file
+into each source file that needs it. Such copying would be time-consuming
+and error-prone. With a header file, the related declarations appear
+in only one place. If they need to be changed, they can be changed in one
+place, and programs that include the header file will automatically use the
+new version when next recompiled. The header file eliminates the labor of
+finding and changing all the copies as well as the risk that a failure to
+find one copy will result in inconsistencies within a program.
+
+In C, the usual convention is to give header files names that end with `.h'.
+It is most portable to use only letters, digits, dashes, and underscores in
+header file names, and at most one dot.
+
+Read more about using header files in official GCC documentation:
+
+* Include Syntax
+* Include Operation
+* Once-Only Headers
+* Computed Includes
+
+https://gcc.gnu.org/onlinedocs/cpp/Header-Files.html

include/clickwheel.h

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+#ifndef CLICKWHEEL_H
+#define CLICKWHEEL_H
+
+#include <Arduino.h>
+
+////////Start Click Wheel
+#define CENTER_BUTTON_BIT 7
+#define LEFT_BUTTON_BIT 9
+#define RIGHT_BUTTON_BIT 8
+#define UP_BUTTON_BIT 11
+#define DOWN_BUTTON_BIT 10
+#define WHEEL_TOUCH_BIT 29
+#define BUFFER_SIZE 3
+#define BUTTON_INDEX 0
+#define BUTTON_STATE_INDEX 1
+#define WHEEL_POSITION_INDEX 2
+#define CLOCK_PIN 4                    // SCL purple
+#define DATA_PIN 3                     // SDA grey
+#define BUTTON_PIN_BITMASK 0x200000000 // 2^33 in hex
+#define BIT_COUNT 32
+
+bool ClickWheelClicked = false;
+int ClickWheelScrollPrev[5];
+int ClickWheelNoiseFilterAmt = 4; // three works for me!
+
+volatile bool CLOCK_RISING = false;
+volatile bool DATA_EDGE = false;
+
+// Click Wheel Data Line Pin Bitmask
+int wheel_position;
+int last_wheel_position;
+int last_button;
+int last_interaction;
+bool wheel_scroll_lift = false;
+int WheelSensitivity = 0;
+
+unsigned long crashtick = 0;
+
+volatile boolean click_wheel_packets_received = false;
+volatile int HapticFeebackDue = 0;
+
+// used to store the current packet
+uint32_t bits = 0;
+// used to store the previous full packet
+uint32_t lastBits = 0;
+uint8_t bitIndex = 0;
+uint8_t oneCount = 0;
+uint8_t recording = 0;
+// indicates whether the data pin is high or low
+uint8_t dataBit = 1;
+uint8_t lastPosition = 255;
+int hapticWaveId = -1;
+
+char buttons[] = {CENTER_BUTTON_BIT, LEFT_BUTTON_BIT, RIGHT_BUTTON_BIT,
+                  UP_BUTTON_BIT,     DOWN_BUTTON_BIT, WHEEL_TOUCH_BIT};
+
+const uint32_t PACKET_START = 0b01101;
+char buffer[BUFFER_SIZE];
+char prev_buffer[BUFFER_SIZE];
+volatile bool InputReceived = false;
+
+#endif 

include/constants.h

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+#ifndef CONSTANTS_H
+#define CONSTANTS_H
+
+#define FONT_SEMIBOLD "Baloo2-SemiBold-26"
+#define FONT_BOLD "Baloo2-Bold-26"
+
+#endif // CONSTANTS_H

include/main_header.h

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+#ifndef MAIN_HEADER_H
+#define MAIN_HEADER_H
+
+#include <Arduino.h>
+#include <TFT_eSPI.h>
+#include <Button2.h>
+
+// Local imports
+#include "pins.h"
+#include "constants.h"
+#include "clickwheel.h"
+
+#endif // MAIN_HEADER_H

include/pins.h

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+#ifndef PINS_H
+#define PINS_H
+
+#define BUTTON_PIN 12
+#define NEOPIXEL_PIN 33
+
+//------------------
+//   CLICKWHEEL
+//------------------
+
+#define CLOCK_PIN 4 // SCL purple
+#define DATA_PIN 3  // SDA grey
+
+#endif // PINS_H