RGBmatrixPanel.h

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#ifndef RGBMATRIXPANEL_H
#define RGBMATRIXPANEL_H

#if ARDUINO >= 100
#include "Arduino.h"
#else
#include "WProgram.h"
#include "pins_arduino.h"
#endif
#include "Adafruit_GFX.h"

#if defined(__AVR__)
typedef uint8_t PortType;
#elif defined(__arm__) || defined(__xtensa__)
typedef uint32_t PortType; // Formerly 'RwReg' but interfered w/CMCIS header
#endif

class RGBmatrixPanel : public Adafruit_GFX {

public:
  RGBmatrixPanel(uint8_t a, uint8_t b, uint8_t c, uint8_t clk, uint8_t lat,
                 uint8_t oe, boolean dbuf
#if defined(ARDUINO_ARCH_SAMD) || defined(ARDUINO_ARCH_ESP32)
                 ,
                 uint8_t *pinlist = NULL
#endif
  );

  RGBmatrixPanel(uint8_t a, uint8_t b, uint8_t c, uint8_t d, uint8_t clk,
                 uint8_t lat, uint8_t oe, boolean dbuf, uint8_t width = 32
#if defined(ARDUINO_ARCH_SAMD) || defined(ARDUINO_ARCH_ESP32)
                 ,
                 uint8_t *pinlist = NULL
#endif
  );

  void begin(void);

  void drawPixel(int16_t x, int16_t y, uint16_t c);

  void fillScreen(uint16_t c);

  void updateDisplay(void);

  void swapBuffers(boolean);

  void dumpMatrix(void);

  uint8_t *backBuffer(void);

  uint16_t Color333(uint8_t r, uint8_t g, uint8_t b);

  uint16_t Color444(uint8_t r, uint8_t g, uint8_t b);

  uint16_t Color888(uint8_t r, uint8_t g, uint8_t b);

  uint16_t Color888(uint8_t r, uint8_t g, uint8_t b, boolean gflag);

  uint16_t ColorHSV(long hue, uint8_t sat, uint8_t val, boolean gflag);

private:
  uint8_t *matrixbuff[2];     
  uint8_t nRows;              
  volatile uint8_t backindex; 
  volatile boolean swapflag;  

  // Init/alloc code common to both constructors:
  void init(uint8_t rows, uint8_t a, uint8_t b, uint8_t c, uint8_t clk,
            uint8_t lat, uint8_t oe, boolean dbuf, uint8_t width
#if defined(ARDUINO_ARCH_SAMD) || defined(ARDUINO_ARCH_ESP32)
            ,
            uint8_t *rgbpins
#endif
  );

  uint8_t _clk;       
  uint8_t _lat;       
  uint8_t _oe;        
  uint8_t _a;         
  uint8_t _b;         
  uint8_t _c;         
  uint8_t _d;         
  PortType clkmask;   
  PortType latmask;   
  PortType oemask;    
  PortType addramask; 
  PortType addrbmask; 
  PortType addrcmask; 
  PortType addrdmask; 
  // PORT register pointers (CLKPORT is hardcoded on AVR)
  volatile PortType *latport;   
  volatile PortType *oeport;    
  volatile PortType *addraport; 
  volatile PortType *addrbport; 
  volatile PortType *addrcport; 
  volatile PortType *addrdport; 

#if defined(ARDUINO_ARCH_SAMD) || defined(ARDUINO_ARCH_ESP32)
  uint8_t rgbpins[6];           
  volatile PortType *outsetreg; 
  volatile PortType *outclrreg; 
  PortType rgbclkmask;          
  PortType expand[256];         
#endif

  volatile uint8_t row;      
  volatile uint8_t plane;    
  volatile uint8_t *buffptr; 
};

#endif // RGBMATRIXPANEL_H