ESP32-PaxCounter/include/display.h

#ifndef _DISPLAY_H
#define _DISPLAY_H

#include "cyclic.h"
#include "qrcode.h"

#if (HAS_DISPLAY) == 1
#include <ss_oled.h>
#elif (HAS_DISPLAY) == 2
#include <TFT_eSPI.h>
#endif

#define DISPLAY_PAGES (7) // number of paxcounter display pages

// settings for OLED display library
#if (HAS_DISPLAY) == 1
#define MY_FONT_SMALL FONT_SMALL
#define MY_FONT_NORMAL FONT_NORMAL
#define MY_FONT_LARGE FONT_LARGE
#define MY_FONT_STRETCHED FONT_STRETCHED
#define USE_BACKBUFFER 1
#ifdef MY_DISPLAY_ADDR
#define OLED_ADDR MY_DISPLAY_ADDR
#else
#define OLED_ADDR -1
#endif
#ifndef USW_HW_I2C
#define USE_HW_I2C 1
#endif
#ifndef OLED_FREQUENCY
#define OLED_FREQUENCY 400000L
#endif

// settings for TFT display library
#elif (HAS_DISPLAY == 2)

#define MY_FONT_SMALL 1
#define MY_FONT_NORMAL 2
#define MY_FONT_LARGE 4
#define MY_FONT_STRETCHED 6

#ifndef MY_DISPLAY_FGCOLOR
#define MY_DISPLAY_FGCOLOR TFT_WHITE
#endif
#ifndef MY_DISPLAY_BGCOLOR
#define MY_DISPLAY_BGCOLOR TFT_BLACK
#endif

#endif

// setup display hardware type, default is OLED 128x64
#ifndef OLED_TYPE
#define OLED_TYPE OLED_128x64
#endif

#ifndef MY_DISPLAY_INVERT
#define MY_DISPLAY_INVERT 0
#endif

#ifndef MY_DISPLAY_FLIP
#define MY_DISPLAY_FLIP 0
#endif

#ifndef MY_DISPLAY_WIDTH
#define MY_DISPLAY_WIDTH 128 // Width in pixels of OLED-display, must be 32X
#endif
#ifndef MY_DISPLAY_HEIGHT
#define MY_DISPLAY_HEIGHT 64 // Height in pixels of OLED-display, must be 64X
#endif

// settings for qr code generator
#define QR_VERSION 3                                // 29 x 29px
#define QR_SCALEFACTOR MY_DISPLAY_HEIGHT / (29 + 4) // 4px borderlines

extern uint8_t DisplayIsOn, displaybuf[];

void dp_setup(int contrast = 0);
void dp_refresh(bool nextPage = false);
void dp_init(bool verbose = false);
void dp_shutdown(void);
void dp_drawPage(time_t t, bool nextpage);
void dp_println(void);
void dp_printf(uint16_t x, uint16_t y, uint8_t font, uint8_t inv,
               const char *format, ...);
void dp_dump(uint8_t *pBuffer);
void dp_setCursor(int x, int y);
void dp_contrast(uint8_t contrast);
void dp_clear(void);
void dp_power(uint8_t screenon);
void dp_printqr(uint16_t offset_x, uint16_t offset_y, const char *Message);
void dp_fillRect(uint16_t x, uint16_t y, uint16_t width, uint16_t height,
                 uint8_t bRender);
void dp_scrollHorizontal(uint8_t *buf, const uint16_t width,
                         const uint16_t height, bool left = true);
void dp_scrollVertical(uint8_t *buf, const uint16_t width,
                       const uint16_t height, int offset = 0);
int dp_drawPixel(uint8_t *buf, const uint16_t x, const uint16_t y,
                 const uint8_t dot);
void dp_plotCurve(uint16_t count, bool reset);
void dp_rescaleBuffer(uint8_t *buf, const int factor);

#endif