Diff: OLEDDisplay.h

Revision:

0:56dd5df33ab4

Child:

1:9270c15c6aea

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/OLEDDisplay.h	Wed Apr 10 14:15:31 2019 +0000
@@ -0,0 +1,359 @@
+/**
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2018 by ThingPulse, Daniel Eichhorn
+ * Copyright (c) 2018 by Fabrice Weinberg
+ * Copyright (c) 2019 by Helmut Tschemernjak - www.radioshuttle.de
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ * ThingPulse invests considerable time and money to develop these open source libraries.
+ * Please support us by buying our products (and not the clones) from
+ * https://thingpulse.com
+ *
+ */
+
+#ifndef OLEDDISPLAY_h
+#define OLEDDISPLAY_h
+
+#ifdef ARDUINO
+#include <Arduino.h>
+#elif __MBED__
+#define pgm_read_byte(addr)   (*(const unsigned char *)(addr))
+
+#include <mbed.h>
+#define delay(x)	wait_ms(x)
+#define yield()		void()
+
+/*
+ * This is a little Arduino String emulation to keep the OLEDDisplay
+ * library code in common between Arduino and mbed-os
+ */
+class String {
+public:
+	String(const char *s) { _str = s; };
+	int length() { return strlen(_str); };
+	const char *c_str() { return _str; };
+    void toCharArray(char *buf, unsigned int bufsize, unsigned int index = 0) const {
+		memcpy(buf, _str + index,  std::min(bufsize, strlen(_str)));
+	};
+private:
+	const char *_str;
+};
+
+#else
+#error "Unkown operating system"
+#endif
+
+#include "OLEDDisplayFonts.h"
+
+//#define DEBUG_OLEDDISPLAY(...) Serial.printf( __VA_ARGS__ )
+//#define DEBUG_OLEDDISPLAY(...) dprintf("%s",  __VA_ARGS__ )
+
+#ifndef DEBUG_OLEDDISPLAY
+#define DEBUG_OLEDDISPLAY(...)
+#endif
+
+// Use DOUBLE BUFFERING by default
+#ifndef OLEDDISPLAY_REDUCE_MEMORY
+#define OLEDDISPLAY_DOUBLE_BUFFER
+#endif
+
+// Header Values
+#define JUMPTABLE_BYTES 4
+
+#define JUMPTABLE_LSB   1
+#define JUMPTABLE_SIZE  2
+#define JUMPTABLE_WIDTH 3
+#define JUMPTABLE_START 4
+
+#define WIDTH_POS 0
+#define HEIGHT_POS 1
+#define FIRST_CHAR_POS 2
+#define CHAR_NUM_POS 3
+
+
+// Display commands
+#define CHARGEPUMP 0x8D
+#define COLUMNADDR 0x21
+#define COMSCANDEC 0xC8
+#define COMSCANINC 0xC0
+#define DISPLAYALLON 0xA5
+#define DISPLAYALLON_RESUME 0xA4
+#define DISPLAYOFF 0xAE
+#define DISPLAYON 0xAF
+#define EXTERNALVCC 0x1
+#define INVERTDISPLAY 0xA7
+#define MEMORYMODE 0x20
+#define NORMALDISPLAY 0xA6
+#define PAGEADDR 0x22
+#define SEGREMAP 0xA0
+#define SETCOMPINS 0xDA
+#define SETCONTRAST 0x81
+#define SETDISPLAYCLOCKDIV 0xD5
+#define SETDISPLAYOFFSET 0xD3
+#define SETHIGHCOLUMN 0x10
+#define SETLOWCOLUMN 0x00
+#define SETMULTIPLEX 0xA8
+#define SETPRECHARGE 0xD9
+#define SETSEGMENTREMAP 0xA1
+#define SETSTARTLINE 0x40
+#define SETVCOMDETECT 0xDB
+#define SWITCHCAPVCC 0x2
+
+#ifndef _swap_int16_t
+#define _swap_int16_t(a, b) { int16_t t = a; a = b; b = t; }
+#endif
+
+enum OLEDDISPLAY_COLOR {
+  BLACK = 0,
+  WHITE = 1,
+  INVERSE = 2
+};
+
+enum OLEDDISPLAY_TEXT_ALIGNMENT {
+  TEXT_ALIGN_LEFT = 0,
+  TEXT_ALIGN_RIGHT = 1,
+  TEXT_ALIGN_CENTER = 2,
+  TEXT_ALIGN_CENTER_BOTH = 3
+};
+
+
+enum OLEDDISPLAY_GEOMETRY {
+  GEOMETRY_128_64   = 0,
+  GEOMETRY_128_32   = 1
+};
+
+typedef char (*FontTableLookupFunction)(const char ch);
+char DefaultFontTableLookup(const char ch);
+
+
+#ifdef ARDUINO
+class OLEDDisplay : public Print  {
+#elif __MBED__
+class OLEDDisplay : public Stream {
+#else
+#error "Unkown operating system"
+#endif
+
+  public:
+	OLEDDisplay();
+    virtual ~OLEDDisplay();
+
+	uint16_t width(void) const { return displayWidth; };
+	uint16_t height(void) const { return displayHeight; };
+
+    // Initialize the display
+    bool init();
+
+    // Free the memory used by the display
+    void end();
+
+    // Cycle through the initialization
+    void resetDisplay(void);
+
+    /* Drawing functions */
+    // Sets the color of all pixel operations
+    void setColor(OLEDDISPLAY_COLOR color);
+
+    // Returns the current color.
+    OLEDDISPLAY_COLOR getColor();
+
+    // Draw a pixel at given position
+    void setPixel(int16_t x, int16_t y);
+
+    // Draw a line from position 0 to position 1
+    void drawLine(int16_t x0, int16_t y0, int16_t x1, int16_t y1);
+
+    // Draw the border of a rectangle at the given location
+    void drawRect(int16_t x, int16_t y, int16_t width, int16_t height);
+
+    // Fill the rectangle
+    void fillRect(int16_t x, int16_t y, int16_t width, int16_t height);
+
+    // Draw the border of a circle
+    void drawCircle(int16_t x, int16_t y, int16_t radius);
+
+    // Draw all Quadrants specified in the quads bit mask
+    void drawCircleQuads(int16_t x0, int16_t y0, int16_t radius, uint8_t quads);
+
+    // Fill circle
+    void fillCircle(int16_t x, int16_t y, int16_t radius);
+
+    // Draw a line horizontally
+    void drawHorizontalLine(int16_t x, int16_t y, int16_t length);
+
+    // Draw a line vertically
+    void drawVerticalLine(int16_t x, int16_t y, int16_t length);
+
+    // Draws a rounded progress bar with the outer dimensions given by width and height. Progress is
+    // a unsigned byte value between 0 and 100
+    void drawProgressBar(uint16_t x, uint16_t y, uint16_t width, uint16_t height, uint8_t progress);
+
+    // Draw a bitmap in the internal image format
+    void drawFastImage(int16_t x, int16_t y, int16_t width, int16_t height, const uint8_t *image);
+
+    // Draw a XBM
+    void drawXbm(int16_t x, int16_t y, int16_t width, int16_t height, const uint8_t *xbm);
+
+    /* Text functions */
+
+    // Draws a string at the given location
+    void drawString(int16_t x, int16_t y, String text);
+
+    // Draws a String with a maximum width at the given location.
+    // If the given String is wider than the specified width
+    // The text will be wrapped to the next line at a space or dash
+    void drawStringMaxWidth(int16_t x, int16_t y, uint16_t maxLineWidth, String text);
+
+    // Returns the width of the const char* with the current
+    // font settings
+    uint16_t getStringWidth(const char* text, uint16_t length);
+
+    // Convencience method for the const char version
+    uint16_t getStringWidth(String text);
+
+    // Specifies relative to which anchor point
+    // the text is rendered. Available constants:
+    // TEXT_ALIGN_LEFT, TEXT_ALIGN_CENTER, TEXT_ALIGN_RIGHT, TEXT_ALIGN_CENTER_BOTH
+    void setTextAlignment(OLEDDISPLAY_TEXT_ALIGNMENT textAlignment);
+
+    // Sets the current font. Available default fonts
+    // ArialMT_Plain_10, ArialMT_Plain_16, ArialMT_Plain_24
+    void setFont(const uint8_t *fontData);
+
+    // Set the function that will convert utf-8 to font table index
+    void setFontTableLookupFunction(FontTableLookupFunction function);
+
+    /* Display functions */
+
+    // Turn the display on
+    void displayOn(void);
+
+    // Turn the display offs
+    void displayOff(void);
+
+    // Inverted display mode
+    void invertDisplay(void);
+
+    // Normal display mode
+    void normalDisplay(void);
+
+    // Set display contrast
+    // really low brightness & contrast: contrast = 10, precharge = 5, comdetect = 0
+    // normal brightness & contrast:  contrast = 100
+    void setContrast(uint8_t contrast, uint8_t precharge = 241, uint8_t comdetect = 64);
+
+    // Convenience method to access 
+    void setBrightness(uint8_t);
+
+    // Reset display rotation or mirroring
+    void resetOrientation();
+
+    // Turn the display upside down
+    void flipScreenVertically();
+
+    // Mirror the display (to be used in a mirror or as a projector)
+    void mirrorScreen();
+
+    // Write the buffer to the display memory
+    virtual void display(void) = 0;
+
+    // Clear the local pixel buffer
+    void clear(void);
+
+    // Log buffer implementation
+
+    // This will define the lines and characters you can
+    // print to the screen. When you exeed the buffer size (lines * chars)
+    // the output may be truncated due to the size constraint.
+    bool setLogBuffer(uint16_t lines, uint16_t chars);
+
+    // Draw the log buffer at position (x, y)
+    void drawLogBuffer(uint16_t x, uint16_t y);
+
+    // Get screen geometry
+    uint16_t getWidth(void);
+    uint16_t getHeight(void);
+
+    // Implement needed function to be compatible with Print class
+    size_t write(uint8_t c);
+    size_t write(const char* s);
+	
+    // Implement needed function to be compatible with Stream class
+#ifdef __MBED__
+	int _putc(int c);
+	int _getc() { return -1; };
+#endif
+
+
+    uint8_t            *buffer;
+
+    #ifdef OLEDDISPLAY_DOUBLE_BUFFER
+    uint8_t            *buffer_back;
+    #endif
+
+  protected:
+
+    OLEDDISPLAY_GEOMETRY geometry;
+
+    uint16_t  displayWidth;
+    uint16_t  displayHeight;
+    uint16_t  displayBufferSize;
+
+    // Set the correct height, width and buffer for the geometry
+    void setGeometry(OLEDDISPLAY_GEOMETRY g);
+
+    OLEDDISPLAY_TEXT_ALIGNMENT   textAlignment;
+    OLEDDISPLAY_COLOR            color;
+
+    const uint8_t	 *fontData;
+
+    // State values for logBuffer
+    uint16_t   logBufferSize;
+    uint16_t   logBufferFilled;
+    uint16_t   logBufferLine;
+    uint16_t   logBufferMaxLines;
+    char      *logBuffer;
+
+
+	// the header size of the buffer used, e.g. for the SPI command header
+	virtual int getBufferOffset(void) = 0;
+	
+    // Send a command to the display (low level function)
+    virtual void sendCommand(uint8_t com) {(void)com;};
+
+    // Connect to the display
+    virtual bool connect() { return false; };
+
+    // Send all the init commands
+    void sendInitCommands();
+
+    // converts utf8 characters to extended ascii
+    char* utf8ascii(String s);
+
+    void inline drawInternal(int16_t xMove, int16_t yMove, int16_t width, int16_t height, const uint8_t *data, uint16_t offset, uint16_t bytesInData) __attribute__((always_inline));
+
+    void drawStringInternal(int16_t xMove, int16_t yMove, char* text, uint16_t textLength, uint16_t textWidth);
+	
+	FontTableLookupFunction fontTableLookupFunction;
+};
+
+#endif
+