Version 1.6.1

README.md

@@ -42,7 +42,7 @@
 	2. C++, g++ (Debian 12.2.0) 
 	3. Raspbian , Debian 12 bookworm OS, , 64 bit.
 	4. kernel : aarch64 Linux 6.1.0-rpi7-rpi-v8
-	5. [bcm2835 Library 1.71 dependency](http://www.airspayce.com/mikem/bcm2835/). Provides low level I2C bus, delays and GPIO control.
+	5. [bcm2835 Library 1.74 dependency](http://www.airspayce.com/mikem/bcm2835/). Provides low level I2C bus, delays and GPIO control.
 
 
 ## Installation
@@ -57,14 +57,14 @@
 	* Run following command to download from github.
 
 ```sh
-curl -sL https://github.com/gavinlyonsrepo/SSD1306_OLED_RPI/archive/1.6.tar.gz | tar xz
+curl -sL https://github.com/gavinlyonsrepo/SSD1306_OLED_RPI/archive/1.6.1.tar.gz | tar xz
 ```
 
 3. Run "make" to run the makefile in repo base folder to install library, it will be 
     installed to usr/lib and usr/include
 
 ```sh
-cd SSD1306_OLED_RPI-1.6
+cd SSD1306_OLED_RPI-1.6.1
 make
 sudo make install
 ```
@@ -108,10 +108,8 @@ Manufacturers diagram showing connections.
 
 ### API Documentation
 
-The API (application programming interface) documentation is at link hosted on github pages and generated by Doxygen software.
-Lots of information on the software.
-
-[ API URL Link](https://gavinlyonsrepo.github.io/misc/software_docs/SSD1306_OLED_RPI/index.html) 
+The Software is commented for "doxygen". If users uses "doxygen" software
+an application programming interface document can be generated.
 
 ### I2C
 
@@ -198,3 +196,8 @@ variables in examples files.
 | 128x64 | Yes | Yes |
 | 128x32 | Yes | Yes |
 | ???x16 | Yes | NO |
+
+
+## See Also
+
+[Combined Display library 'Display_Lib_RPI'](https://github.com/gavinlyonsrepo/Display_Lib_RPI)

examples/src/OLED_FUNCTIONS/main.cpp

@@ -161,13 +161,17 @@ void Test()
 	myOLED.OLEDclearBuffer();
 	myOLED.setCursor(5,5 );
 	myOLED.print("rotate 90");
+	myOLED.setCursor(5,110);
+	myOLED.print("bottom");
 	myOLED.OLEDupdate();
 	bcm2835_delay(3000);
 
 	myOLED.setRotation(OLED_Degrees_180);
 	myOLED.OLEDclearBuffer();
 	myOLED.setCursor(5,5 );
 	myOLED.print("rotate 180");
+	myOLED.setCursor(5,50);
+	myOLED.print("bottom");
 	myOLED.OLEDupdate();
 	bcm2835_delay(3000);
 
@@ -176,13 +180,17 @@ void Test()
 	myOLED.OLEDclearBuffer();
 	myOLED.setCursor(5,5 );
 	myOLED.print("rotate   270");
+	myOLED.setCursor(5,110);
+	myOLED.print("bottom");
 	myOLED.OLEDupdate();
 	bcm2835_delay(3000);
 
 	myOLED.setRotation(OLED_Degrees_0); //default normal 
 	myOLED.OLEDclearBuffer();
 	myOLED.setCursor(5,5 );
 	myOLED.print("rotate 0");
+	myOLED.setCursor(5,50);
+	myOLED.print("bottom");
 	myOLED.OLEDupdate();
 	bcm2835_delay(3000);
 

extras/doc/CHANGELOG.md

@@ -2,10 +2,6 @@
 
 * version 1.0.0 May 2021
 	* first release.
-* Version 1.1 June 2021
-	* packaged library files as a dynamic C++ install-able system level library complete with makefile.
-* version 1.2 July 2021
-	* Added Large Numerical fonts (7&8) and changed print class functionality so print class works with them.
 * version 1.3 Jan 2023
 	* Added Fonts, tiny and homespun.
 	* Added "Drawtext" method
@@ -22,7 +18,10 @@
 	* Refactored I2C bus control to give user more control and visibility.
 	* Changed CCFLAGS in root directory Makefile to allow for Compilation on 64-bit systems. See Pull request number 2 on github
 	* Fixed bug in "println" method for String objects.
-* version 1.6 Feb 2024
+* version 1.6 Jan 2024
 	* Added Fonts 11 and 12
 	* Added Error enum OLED_return_codes_e to text and bitmap methods.
 	* Added User ability to change I2C error delay and retry attempts. 
+* version 1.6.1 Feb 2024
+	* minor update, modified the screen boundary check in 'drawPixel' method 
+	so 90 and 270 degree screen rotation works fully for entire rotated screen area.

include/SSD1306_OLED.hpp

@@ -141,13 +141,11 @@ class SSD1306 : public SSD1306_graphics  {
 	uint8_t _I2C_ErrorRetryNum = 3; /**< In event of I2C error number of retry attempts*/
 	uint8_t _I2C_ErrorFlag = 0x00; /**< In event of I2C error holds bcm2835 I2C reason code 0x00 = success*/
 
-	uint16_t _LibraryVersionNum = 160; /**< Library version number */
+	uint16_t _LibraryVersionNum = 161; /**< Library version number */
 
-	int16_t _OLED_WIDTH;      /**< Width of OLED Screen in pixels */
-	int16_t _OLED_HEIGHT;    /**< Height of OLED Screen in pixels */
-	int8_t _OLED_PAGE_NUM; /**< Number of byte size pages OLED screen is divided into */
-	uint8_t bufferWidth ;      /**< Width of Screen Buffer */
-	uint8_t bufferHeight ;    /**< Height of Screen Buffer */
+	uint8_t _OLED_WIDTH=128;      /**< Width of OLED Screen in pixels */
+	uint8_t _OLED_HEIGHT=64;    /**< Height of OLED Screen in pixels */
+	uint8_t _OLED_PAGE_NUM=(_OLED_HEIGHT/8); /**< Number of byte size pages OLED screen is divided into */
 
 	uint8_t* OLEDbuffer = nullptr; /**< pointer to buffer which holds screen data */
 

src/SSD1306_OLED.cpp

@@ -17,8 +17,6 @@ SSD1306::SSD1306(int16_t oledwidth, int16_t oledheight) :SSD1306_graphics(oledwi
 	_OLED_HEIGHT = oledheight;
 	_OLED_WIDTH = oledwidth;
 	_OLED_PAGE_NUM = (_OLED_HEIGHT/8); 
-	bufferWidth = _OLED_WIDTH;
-	bufferHeight = _OLED_HEIGHT;
 }
 
 /*!
@@ -369,8 +367,7 @@ void SSD1306::I2C_Write_Byte(uint8_t value, uint8_t cmd)
 */
 void SSD1306::OLEDupdate()
 {
-	uint8_t x = 0; uint8_t y = 0; uint8_t w = this->bufferWidth; uint8_t h = this->bufferHeight;
-	//OLEDBufferScreen( x,  y,  w,  h, (uint8_t*) this->OLEDbuffer); TODO
+	uint8_t x = 0; uint8_t y = 0; uint8_t w = this->_OLED_WIDTH; uint8_t h = this->_OLED_HEIGHT;
 	OLEDBufferScreen( x,  y,  w,  h, this->OLEDbuffer);
 }
 
@@ -379,7 +376,7 @@ void SSD1306::OLEDupdate()
 */
 void SSD1306::OLEDclearBuffer()
 {
-	memset( this->OLEDbuffer, 0x00, (this->bufferWidth * (this->bufferHeight /8)));
+	memset( this->OLEDbuffer, 0x00, (this->_OLED_WIDTH * (this->_OLED_HEIGHT /8)));
 }
 
 /*!
@@ -434,7 +431,7 @@ void SSD1306::OLEDBufferScreen(int16_t x, int16_t y, uint8_t w, uint8_t h, uint8
 void SSD1306::drawPixel(int16_t x, int16_t y, uint8_t color)
 {
 
-	if ((x < 0) || (x >= this->bufferWidth) || (y < 0) || (y >= this->bufferHeight)) {
+	if ((x < 0) || (x >= this->_width) || (y < 0) || (y >= this->_height)) {
 	return;
 	}
 	int16_t temp;
@@ -455,7 +452,7 @@ void SSD1306::drawPixel(int16_t x, int16_t y, uint8_t color)
 		y = HEIGHT - 1 - temp;
 	break;
 	}
-		uint16_t tc = (bufferWidth * (y /8)) + x;
+		uint16_t tc = (_OLED_WIDTH  * (y /8)) + x;
 		switch (color)
 		{
 			case WHITE:  this->OLEDbuffer[tc] |= (1 << (y & 7)); break;