Added support for Adafruit_GFX

Author: bartoszbielawski

README.md

@@ -7,6 +7,7 @@ A replacement for Arduino's LedControl library.
 - Writing to the display is controlled by the software,
 - Much, much faster (as it uses hardware SPI with soft SS)
 - Can use an external memory or self-allocated buffer
+- (Optional) support for Adafruit_GFX library - use -DUSE_ADAFTUIT_GFX to enable.
 
 ## Pin selection
 Each segment of the display needs 16 bits and they can all be shifted in at once. 

library.properties

@@ -1,5 +1,5 @@
 name=LEDMatrixDriver
-version=0.1.2
+version=0.2.0
 author=Bartosz Bielawski
 maintainer=Bartosz Bielawski, bartosz.bielawski@gmail.com
 sentence=A replacement for Arduino's LedControl library for MAX7219

src/LEDMatrixDriver.cpp

@@ -9,6 +9,9 @@
 #include <Arduino.h>
 
 LEDMatrixDriver::LEDMatrixDriver(uint8_t N, uint8_t ssPin, uint8_t* frameBuffer_):
+#ifdef USE_ADAFRUIT_GFX
+	Adafruit_GFX(N*8, N),
+#endif
 	N(N),
 	spiSettings(5000000, MSBFIRST, SPI_MODE0),
 	frameBuffer(frameBuffer_),
@@ -175,7 +178,6 @@ uint8_t* LEDMatrixDriver::_getBufferPtr(uint16_t x, uint16_t y) const
 		return nullptr;
 
 	uint16_t B = x >> 3;		//byte
-	uint16_t b = 7 - (x & 7);	//bit
 
 	return frameBuffer + y*N + B;
 }
@@ -191,7 +193,6 @@ void LEDMatrixDriver::display()
 void LEDMatrixDriver::scroll( scrollDirection direction )
 {
 	int cnt = 0;
-	uint8_t* buf = NULL;
 	switch( direction )
 	{
 		case scrollDirection::scrollUp:

src/LEDMatrixDriver.hpp

@@ -21,7 +21,16 @@
 
 #include <SPI.h>
 
+#ifdef ESP32
+#include <cstring>
+#endif
+
+#ifdef USE_ADAFRUIT_GFX
+#include <Adafruit_GFX.h>
+class LEDMatrixDriver: public Adafruit_GFX
+#else
 class LEDMatrixDriver
+#endif
 {
 	//commands as defined in the datasheet
 	const static uint16_t ENABLE =		0x0C00;
@@ -42,6 +51,13 @@ class LEDMatrixDriver
 		LEDMatrixDriver(LEDMatrixDriver&& other) = delete;
 		LEDMatrixDriver& operator=(const LEDMatrixDriver& other) = delete;
 
+		#ifdef USE_ADAFRUIT_GFX
+		virtual void writePixel(int16_t x, int16_t y, uint16_t color) {setPixel(x,y,color);}
+		virtual void drawPixel(int16_t x, int16_t y, uint16_t color) {setPixel(x,y,color);}
+		virtual void endWrite(void) {if (not manualDisplayRefresh) display();}
+		void setManualDisplayRefresh(bool enabled) {manualDisplayRefresh = enabled;}
+		#endif
+
 		//all these commands work on ALL segments
 		void setEnabled(bool enabled);
 		void setIntensity(uint8_t level);
@@ -92,6 +108,10 @@ class LEDMatrixDriver
 		uint8_t* frameBuffer;
 		bool selfAllocated;
 		uint8_t ssPin;
+
+		#ifdef USE_ADAFRUIT_GFX
+		bool manualDisplayRefresh = true;
+		#endif
 };
 
 #endif /* LEDMATRIXDRIVER_H_ */