Adafruit_LvGL_Glue.h

#ifndef _ADAFRUIT_LVGL_GLUE_H_
#define _ADAFRUIT_LVGL_GLUE_H_

#include <Adafruit_SPITFT.h>   // GFX lib for SPI and parallel displays
#include <Adafruit_STMPE610.h> // SPI Touchscreen lib
#include <TouchScreen.h>       // ADC touchscreen lib
#include <lvgl.h>              // LittlevGL core lib
#if defined(ARDUINO_ARCH_SAMD)
#include <Adafruit_ZeroTimer.h> // SAMD-specific timer lib
#elif defined(ESP32)
#include <Ticker.h> // ESP32-specific timer lib
#endif

typedef enum {
  LVGL_OK,
  LVGL_ERR_ALLOC,
  LVGL_ERR_TIMER,
} LvGLStatus;

class Adafruit_LvGL_Glue {
public:
  Adafruit_LvGL_Glue(void);
  ~Adafruit_LvGL_Glue(void);
  // Different begin() funcs for STMPE610, ADC or no touch
  LvGLStatus begin(Adafruit_SPITFT *tft, Adafruit_STMPE610 *touch,
                   bool debug = false);
  LvGLStatus begin(Adafruit_SPITFT *tft, TouchScreen *touch,
                   bool debug = false);
  LvGLStatus begin(Adafruit_SPITFT *tft, bool debug = false);
  // These items need to be public for some internal callbacks,
  // but should be avoided by user code please!
  Adafruit_SPITFT *display; 
  void *touchscreen;        
  bool is_adc_touch; 
  bool first_frame;  

private:
  LvGLStatus begin(Adafruit_SPITFT *tft, void *touch, bool debug);
  static lv_disp_drv_t lv_disp_drv;
  static lv_disp_draw_buf_t lv_disp_draw_buf;
  static lv_color_t *lv_pixel_buf;
  static lv_indev_drv_t lv_indev_drv;
  lv_indev_t *lv_input_dev_ptr;
#if defined(ARDUINO_ARCH_SAMD)
  Adafruit_ZeroTimer *zerotimer;
#elif defined(ESP32)
  Ticker tick;
#elif defined(NRF52_SERIES)
#endif
};

#endif // _ADAFRUIT_LVGL_GLUE_H_