Guillermo Stedile
Forked para SNOCC
Diff: RA8875.h
- Revision:
- 19:3f82c1161fd2
- Child:
- 20:6e2e4a8372eb
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/RA8875.h Sun Jan 12 17:40:32 2014 +0000
@@ -0,0 +1,802 @@
+#ifndef RA8875_H
+#define RA8875_H
+#include <mbed.h>
+
+#include "GraphicsDisplay.h"
+
+#define RA8875_DEFAULT_SPI_FREQ 1000000
+
+// Define this to enable code that monitors the performance of various
+// graphics commands.
+//#define PERF_METRICS
+
+// What better place for some test code than in here...
+#define TESTENABLE
+
+#define RGB(r,g,b) ( ((r<<8)&0xF800) | ((g<<3)&0x07E0) | (b>>3) )
+
+/// DOS colors - slightly color enhanced
+#define Black RGB(0,0,0)
+#define Blue RGB(0,0,187)
+#define Green RGB(0,187,0)
+#define Cyan RGB(0,187,187)
+#define Red RGB(187,0,0)
+#define Magenta RGB(187,0,187)
+#define Brown RGB(187,187,0)
+#define Gray RGB(187,187,187)
+#define Charcoal RGB(85,85,85)
+#define BrightBlue RGB(85,85,255)
+#define BrightGreen RGB(85,255,85)
+#define BrightCyan RGB(85,255,255)
+#define Orange RGB(255,85,85)
+#define Pink RGB(255,85,255)
+#define Yellow RGB(255,255,85)
+#define White RGB(255,255,255)
+
+//namespace SW_graphics
+//{
+
+/// color type definition to let the compiler help keep us honest.
+///
+/// colors can be defined with the RGB(r,g,b) macro, and there
+/// are a number of predefined colors:
+/// - Black, Blue, Green, Cyan,
+/// - Red, Magenta, Brown, Gray,
+/// - Charcoal, BrightBlue, BrightGreen, BrightCyan,
+/// - Orange, Pink, Yellow, White
+///
+typedef uint16_t color_t;
+
+/// background fill info for drawing Text, Rectangles, RoundedRectanges, Circles, Ellipses and Triangles.
+typedef enum
+{
+ NOFILL, ///< do not fill the object with the background color
+ FILL ///< fill the object space with the background color
+} fill_t;
+
+/// return values from functions
+//typedef enum
+//{
+// noerror,
+// bad_parameter
+//} RetCode_t;
+
+class RA8875 : public GraphicsDisplay
+{
+public:
+ /// font type selection.
+ typedef enum
+ {
+ ISO8859_1,
+ ISO8859_2,
+ ISO8859_3,
+ ISO8859_4
+ } font_t;
+
+ /// font rotation selection
+ typedef enum
+ {
+ normal,
+ rotated
+ } font_angle_t;
+
+ /// alignment
+ typedef enum
+ {
+ align_none,
+ align_full
+ } alignment_t;
+
+ /// Scale factor - 1, 2, 3 4
+ typedef unsigned int HorizontalScale;
+
+ /// Scale factor - 1, 2, 3, 4
+ typedef unsigned int VerticalScale;
+
+ /// Clear screen region
+ typedef enum
+ {
+ FULLWINDOW,
+ ACTIVEWINDOW
+ } Region_t;
+
+ /// Constructor for a display based on the RAiO RA8875
+ /// display controller.
+ ///
+ /// @param mosi is the SPI master out slave in pin on the mbed.
+ /// @param miso is the SPI master in slave out pin on the mbed.
+ /// @param sclk is the SPI shift clock pin on the mbed.
+ /// @param csel is the DigitalOut pin on the mbed to use as the
+ /// active low chip select for the display controller.
+ /// @param reset is the DigitalOut pin on the mbed to use as the
+ /// active low reset input on the display controller -
+ /// but this is not currently used.
+ /// @param name is a text name for this object, which will permit
+ /// capturing stdout and printf() directly to it.
+ ///
+ RA8875(PinName mosi, PinName miso, PinName sclk, PinName csel, PinName reset, const char * name = "lcd");
+
+ /// Destructor doesn't have much to do.
+ //~RA8875();
+
+ /// Write a command to the display
+ ///
+ /// This is a high level command, and may invoke several primitives.
+ ///
+ /// @param command is the command to write.
+ /// @data is optional data to be written to the command register
+ /// and only occurs if the data is in the range [0 - 0xFF].
+ /// @returns success/failure code. @see RetCode_t.
+ ///
+ RetCode_t WriteCommand(unsigned char command, unsigned int data = 0xFFFF);
+
+ /// Write a data byte to the display
+ ///
+ /// This is a high level command, and may invoke several primitives.
+ ///
+ /// @param data is the data to write.
+ /// @returns success/failure code. @see RetCode_t.
+ ///
+ RetCode_t WriteData(unsigned char data);
+
+ /// Read a command register
+ ///
+ /// @param command is the command register to read.
+ /// @returns the value read from the register.
+ ///
+ unsigned char ReadCommand(unsigned char command);
+
+ /// Read a data byte to the display
+ ///
+ /// This is a high level command, and may invoke several primitives.
+ ///
+ /// @returns data that was read.
+ ///
+ unsigned char ReadData(void);
+
+ /// Read the display status
+ ///
+ /// This is a high level command, and may invoke several primitives.
+ ///
+ /// @returns data that was read.
+ ///
+ unsigned char ReadStatus(void);
+
+ /// get the width in pixels of the currently active font
+ ///
+ /// @returns font width in pixels.
+ ///
+ unsigned int fontwidth(void);
+
+ /// get the height in pixels of the currently active font
+ ///
+ /// @returns font height in pixels.
+ ///
+ unsigned int fontheight(void);
+
+ /// get the number of colums based on the currently active font
+ ///
+ /// @returns number of columns.
+ ///
+ virtual int columns(void);
+
+ /// get the number of rows based on the currently active font
+ ///
+ /// @returns number of rows.
+ ///
+ virtual int rows(void);
+
+ /// get the screen width in pixels
+ ///
+ /// @returns screen width in pixels.
+ ///
+ virtual int width(void);
+
+ /// get the screen height in pixels
+ ///
+ /// @returns screen height in pixels.
+ ///
+ virtual int height(void);
+
+ /// Set cursor position based on the current font size.
+ ///
+ /// @param x is the horizontal position in character positions
+ /// @param y is the vertical position in character positions
+ /// @returns success/failure code. @see RetCode_t.
+ ///
+ virtual RetCode_t locate(unsigned int x, unsigned int y);
+
+ /// Prepare the controller to write text to the screen by positioning
+ /// the cursor.
+ ///
+ /// @param x is the horizontal position in pixels (from the left edge)
+ /// @param y is the vertical position in pixels (from the top edge)
+ /// @returns success/failure code. @see RetCode_t.
+ ///
+ RetCode_t SetTextCursor(unsigned int x, unsigned int y);
+
+ /// Select the ISO 8859-X font to use next.
+ ///
+ /// Supported fonts: ISO 8859-1, -2, -3, -4
+ ///
+ /// @param font selects the font for the subsequent text rendering.
+ ///
+ /// @note if either hScale or vScale is outside of its permitted range,
+ /// the command is not executed.
+ /// @returns success/failure code. @see RetCode_t.
+ ///
+ RetCode_t SetTextFont(font_t font = ISO8859_1);
+
+ /// Control the font behavior.
+ ///
+ /// This command lets you make several modifications to any text that
+ /// is written.
+ ///
+ /// Options can be combined:
+ /// Default:
+ /// @li Full alignment disabled,
+ /// @li Font with Background color,
+ /// @li Font in normal orientiation,
+ /// @li Horizontal scale x 1
+ /// @li Vertical scale x 1
+ /// @li alignment
+ ///
+ /// @param fillit defaults to FILL, but can be NOFILL
+ /// @param angle defaults to normal, but can be rotated
+ /// @param hScale defaults to 1, but can be 1, 2, 3, or 4,
+ /// and scales the font size by this amount.
+ /// @param vScale defaults to 1, but can be 1, 2, 3, or 4,
+ /// and scales the font size by this amount.
+ /// @param alignment defaults to align_none, but can be
+ /// align_full.
+ ///
+ /// @note if either hScale or vScale is outside of its permitted range,
+ /// the command is not executed.
+ /// @returns success/failure code. @see RetCode_t.
+ ///
+ RetCode_t SetTextFontControl(fill_t fillit = FILL,
+ font_angle_t angle = normal,
+ HorizontalScale hScale = 1,
+ VerticalScale vScale = 1,
+ alignment_t alignment = align_none);
+
+ /// Control the font size
+ ///
+ /// This command lets you set the font enlargement for both horizontal
+ /// and vertical, independent of the rotation, background, and
+ /// alignment. @see SetTextFontControl.
+ ///
+ /// @param hScale defaults to 1, but can be 1, 2, 3, or 4,
+ /// and scales the font size by this amount.
+ /// @param vScale defaults to 1, but can be 1, 2, 3, or 4,
+ /// and scales the font size by this amount.
+ ///
+ /// @note if either hScale or vScale is outside of its permitted range,
+ /// the command is not executed.
+ /// @returns success/failure code. @see RetCode_t.
+ ///
+ RetCode_t SetTextFontSize(HorizontalScale hScale = 1, VerticalScale vScale = 1);
+
+ /// put a character on the screen.
+ ///
+ /// @param c is the character.
+ /// @returns the character, or EOF if there is an error.
+ ///
+ virtual int _putc(int c);
+
+ /// Write string of text to the display
+ ///
+ /// @param string is the null terminated string to send to the display.
+ ///
+ void puts(const char * string);
+
+ /// Write string of text to the display at the specified location.
+ ///
+ /// @param x is the horizontal position in pixels (from the left edge)
+ /// @param y is the vertical position in pixels (from the top edge)
+ /// @param string is the null terminated string to send to the display.
+ ///
+ void puts(unsigned int x, unsigned int y, const char * string);
+
+ /// Prepare the controller to write binary data to the screen by positioning
+ /// the memory cursor.
+ ///
+ /// @param x is the horizontal position in pixels (from the left edge)
+ /// @param y is the vertical position in pixels (from the top edge)
+ /// @returns success/failure code. @see RetCode_t.
+ ///
+ RetCode_t SetMemoryCursor(unsigned int x, unsigned int y);
+
+ /// Set the window, which controls where items are written to the screen.
+ ///
+ /// When something hits the window width, it wraps back to the left side
+ /// and down a row. If the initial write is outside the window, it will
+ /// be captured into the window when it crosses a boundary.
+ ///
+ /// @param x is the left edge in pixels.
+ /// @param y is the top edge in pixels.
+ /// @param width is the window width in pixels.
+ /// @param height is the window height in pixels.
+ /// @returns success/failure code. @see RetCode_t.
+ ///
+ RetCode_t SetWindow(unsigned int x, unsigned int y, unsigned int width, unsigned int height);
+
+ /// Clear the screen.
+ ///
+ /// The behavior is to clear the whole screen. @see clsw().
+ ///
+ /// @returns success/failure code. @see RetCode_t.
+ ///
+ virtual RetCode_t cls(void);
+
+ /// Clear the screen, or clear only the active window.
+ ///
+ /// The default behavior is to clear the whole screen. With the optional
+ /// parameter, the action can be restricted to the active window, which
+ /// can be set with the @see SetWindow method.
+ ///
+ /// @param region is an optional parameter that defaults to FULLWINDOW
+ /// or may be set to ACTIVEWINDOW.
+ /// @returns success/failure code. @see RetCode_t.
+ ///
+ RetCode_t clsw(RA8875::Region_t region = FULLWINDOW);
+
+ /// Set the background color.
+ ///
+ /// @param color is expressed in 16-bit format.
+ /// @returns success/failure code. @see RetCode_t.
+ ///
+ virtual RetCode_t background(color_t color);
+
+ /// Set the background color.
+ ///
+ /// @param r is the red element of the color.
+ /// @param g is the green element of the color.
+ /// @param b is the blue element of the color.
+ /// @returns success/failure code. @see RetCode_t.
+ ///
+ virtual RetCode_t background(unsigned char r, unsigned char g, unsigned char b);
+
+ /// Set the foreground color.
+ ///
+ /// @param color is expressed in 16-bit format.
+ /// @returns success/failure code. @see RetCode_t.
+ ///
+ virtual RetCode_t foreground(color_t color);
+
+ /// Set the foreground color.
+ ///
+ /// @param R is the red element of the color.
+ /// @param G is the green element of the color.
+ /// @param B is the blue element of the color.
+ /// @returns success/failure code. @see RetCode_t.
+ ///
+ virtual RetCode_t foreground(unsigned char R, unsigned char G, unsigned char B);
+
+ /// Get the current foreground color value.
+ ///
+ /// @returns the current foreground color.
+ ///
+ unsigned int GetForeColor(void);
+
+ /// Draw a pixel in the specified color.
+ ///
+ /// @note As a side effect, this also sets the foreground color
+ /// affecting all subsequent operations.
+ ///
+ /// @param x is the horizontal offset to this pixel.
+ /// @param y is the vertical offset to this pixel.
+ /// @param color defines the color for the pixel.
+ /// @returns success/failure code. @see RetCode_t.
+ ///
+ virtual RetCode_t pixel(unsigned int x, unsigned int y, color_t color);
+
+ /// Draw a pixel in the current foreground color.
+ ///
+ /// @param x is the horizontal offset to this pixel.
+ /// @param y is the veritical offset to this pixel.
+ /// @returns success/failure code. @see RetCode_t.
+ ///
+ virtual RetCode_t pixel(unsigned int x, unsigned int y);
+
+ /// Draw a line in the specified color
+ ///
+ /// @note As a side effect, this changes the current
+ /// foreground color for subsequent operations.
+ ///
+ /// @param x1 is the horizontal start of the line.
+ /// @param y1 is the vertical start of the line.
+ /// @param x2 is the horizontal end of the line.
+ /// @param y2 is the vertical end of the line.
+ /// @param color defines the foreground color.
+ /// @returns success/failure code. @see RetCode_t.
+ ///
+ RetCode_t line(unsigned int x1, unsigned int y1, unsigned int x2, unsigned int y2,
+ color_t color);
+
+ /// Draw a line
+ ///
+ /// Draws a line using the foreground color setting.
+ ///
+ /// @param x1 is the horizontal start of the line.
+ /// @param y1 is the vertical start of the line.
+ /// @param x2 is the horizontal end of the line.
+ /// @param y2 is the vertical end of the line.
+ /// @returns success/failure code. @see RetCode_t.
+ ///
+ RetCode_t line(unsigned int x1, unsigned int y1, unsigned int x2, unsigned int y2);
+
+ /// Draw a rectangle in the specified color
+ ///
+ /// @note As a side effect, this changes the current
+ /// foreground color for subsequent operations.
+ ///
+ /// @param x1 is the horizontal start of the line.
+ /// @param y1 is the vertical start of the line.
+ /// @param x2 is the horizontal end of the line.
+ /// @param y2 is the vertical end of the line.
+ /// @param color defines the foreground color.
+ /// @param fillit is optional to FILL the rectangle. default is NOFILL.
+ /// @returns success/failure code. @see RetCode_t.
+ ///
+ RetCode_t rect(unsigned int x1, unsigned int y1, unsigned int x2, unsigned int y2,
+ color_t color, fill_t fillit = NOFILL);
+
+ /// Draw a filled rectangle in the specified color
+ ///
+ /// @note As a side effect, this changes the current
+ /// foreground color for subsequent operations.
+ ///
+ /// @param x1 is the horizontal start of the line.
+ /// @param y1 is the vertical start of the line.
+ /// @param x2 is the horizontal end of the line.
+ /// @param y2 is the vertical end of the line.
+ /// @param color defines the foreground color.
+ /// @param fillit is optional to NOFILL the rectangle. default is FILL.
+ /// @returns success/failure code. @see RetCode_t.
+ ///
+ RetCode_t fillrect(unsigned int x1, unsigned int y1, unsigned int x2, unsigned int y2,
+ color_t color, fill_t fillit = FILL);
+
+ /// Draw a rectangle
+ ///
+ /// Draws a rectangle using the foreground color setting.
+ ///
+ /// @param x1 is the horizontal start of the line.
+ /// @param y1 is the vertical start of the line.
+ /// @param x2 is the horizontal end of the line.
+ /// @param y2 is the vertical end of the line.
+ /// @param fillit is optional to FILL the rectangle. default is NOFILL.
+ /// @returns success/failure code. @see RetCode_t.
+ ///
+ RetCode_t rect(unsigned int x1, unsigned int y1, unsigned int x2, unsigned int y2,
+ fill_t fillit = NOFILL);
+
+ /// Draw a filled rectangle with rounded corners using the specified color.
+ ///
+ /// @note As a side effect, this changes the current
+ /// foreground color for subsequent operations.
+ ///
+ /// @param x1 is the horizontal start of the line.
+ /// @param y1 is the vertical start of the line.
+ /// @param x2 is the horizontal end of the line.
+ /// @param y2 is the vertical end of the line.
+ /// @param radius1 defines the horizontal width of the curved corner.
+ /// @param radius2 defines the vertical width of the curved corner.
+ /// @param color defines the foreground color.
+ /// @param fillit is optional to FILL the rectangle. default is NOFILL.
+ /// @returns success/failure code. @see RetCode_t.
+ ///
+ RetCode_t fillroundrect(unsigned int x1, unsigned int y1, unsigned int x2, unsigned int y2,
+ unsigned int radius1, unsigned int radius2, color_t color, fill_t fillit = FILL);
+
+ /// Draw a rectangle with rounded corners using the specified color.
+ ///
+ /// @note As a side effect, this changes the current
+ /// foreground color for subsequent operations.
+ ///
+ /// @param x1 is the horizontal start of the line.
+ /// @param y1 is the vertical start of the line.
+ /// @param x2 is the horizontal end of the line.
+ /// @param y2 is the vertical end of the line.
+ /// @param radius1 defines the horizontal width of the curved corner.
+ /// @param radius2 defines the vertical width of the curved corner.
+ /// @param color defines the foreground color.
+ /// @param fillit is optional to FILL the rectangle. default is NOFILL.
+ /// @returns success/failure code. @see RetCode_t.
+ ///
+ RetCode_t roundrect(unsigned int x1, unsigned int y1, unsigned int x2, unsigned int y2,
+ unsigned int radius1, unsigned int radius2, color_t color, fill_t fillit = NOFILL);
+
+ /// Draw a rectangle with rounded corners.
+ ///
+ /// Draws a rectangle with rounded corners using the foreground color setting.
+ ///
+ /// @param x1 is the horizontal start of the line.
+ /// @param y1 is the vertical start of the line.
+ /// @param x2 is the horizontal end of the line.
+ /// @param y2 is the vertical end of the line.
+ /// @param radius1 defines the horizontal width of the curved corner.
+ /// @param radius2 defines the vertical width of the curved corner.
+ /// @param fillit is optional to FILL the rectangle. default is NOFILL.
+ /// @returns success/failure code. @see RetCode_t.
+ ///
+ RetCode_t roundrect(unsigned int x1, unsigned int y1, unsigned int x2, unsigned int y2,
+ unsigned int radius1, unsigned int radius2, fill_t fillit = NOFILL);
+
+ /// Draw a triangle in the specified color.
+ ///
+ /// @note As a side effect, this changes the current
+ /// foreground color for subsequent operations.
+ ///
+ /// @param x1 is the horizontal for point 1.
+ /// @param y1 is the vertical for point 1.
+ /// @param x2 is the horizontal for point 2.
+ /// @param y2 is the vertical for point 2.
+ /// @param x3 is the horizontal for point 3.
+ /// @param y3 is the vertical for point 3.
+ /// @param color defines the foreground color.
+ /// @param fillit is optional to FILL the rectangle. default is NOFILL.
+ /// @returns success/failure code. @see RetCode_t.
+ ///
+ RetCode_t triangle(unsigned int x1, unsigned int y1, unsigned int x2, unsigned int y2,
+ unsigned int x3, unsigned int y3, color_t color, fill_t fillit = NOFILL);
+
+ /// Draw a filled triangle in the specified color.
+ ///
+ /// @note As a side effect, this changes the current
+ /// foreground color for subsequent operations.
+ ///
+ /// @param x1 is the horizontal for point 1.
+ /// @param y1 is the vertical for point 1.
+ /// @param x2 is the horizontal for point 2.
+ /// @param y2 is the vertical for point 2.
+ /// @param x3 is the horizontal for point 3.
+ /// @param y3 is the vertical for point 3.
+ /// @param color defines the foreground color.
+ /// @param fillit is optional to FILL the rectangle. default is NOFILL.
+ /// @returns success/failure code. @see RetCode_t.
+ ///
+ RetCode_t filltriangle(unsigned int x1, unsigned int y1, unsigned int x2, unsigned int y2,
+ unsigned int x3, unsigned int y3, color_t color, fill_t fillit = FILL);
+
+ /// Draw a triangle
+ ///
+ /// Draws a triangle using the foreground color setting.
+ ///
+ /// @param x1 is the horizontal for point 1.
+ /// @param y1 is the vertical for point 1.
+ /// @param x2 is the horizontal for point 2.
+ /// @param y2 is the vertical for point 2.
+ /// @param x3 is the horizontal for point 3.
+ /// @param y3 is the vertical for point 3.
+ /// @param fillit is optional to FILL the rectangle. default is NOFILL.
+ /// @returns success/failure code. @see RetCode_t.
+ ///
+ RetCode_t triangle(unsigned int x1, unsigned int y1, unsigned int x2, unsigned int y2,
+ unsigned int x3, unsigned int y3, fill_t fillit = NOFILL);
+
+ /// Draw a circle using the specified color.
+ ///
+ /// @note As a side effect, this changes the current
+ /// foreground color for subsequent operations.
+ ///
+ /// @param x is the horizontal center of the circle.
+ /// @param y is the vertical center of the circle.
+ /// @param radius defines the size of the circle.
+ /// @param color defines the foreground color.
+ /// @returns success/failure code. @see RetCode_t.
+ ///
+ RetCode_t circle(unsigned int x, unsigned int y, unsigned int radius, color_t color, fill_t fillit = NOFILL);
+
+ /// Draw a filled circle using the specified color.
+ ///
+ /// @note As a side effect, this changes the current
+ /// foreground color for subsequent operations.
+ ///
+ /// @param x is the horizontal center of the circle.
+ /// @param y is the vertical center of the circle.
+ /// @param radius defines the size of the circle.
+ /// @param color defines the foreground color.
+ /// @returns success/failure code. @see RetCode_t.
+ ///
+ RetCode_t fillcircle(unsigned int x, unsigned int y, unsigned int radius, color_t color, fill_t fillit = FILL);
+
+ /// Draw a circle.
+ ///
+ /// Draws a circle using the foreground color setting.
+ ///
+ /// @param x is the horizontal center of the circle.
+ /// @param y is the vertical center of the circle.
+ /// @param radius defines the size of the circle.
+ /// @returns success/failure code. @see RetCode_t.
+ ///
+ RetCode_t circle(unsigned int x, unsigned int y, unsigned int radius, fill_t fillit = NOFILL);
+
+ /// Draw an Ellipse using the specified color
+ ///
+ /// @note As a side effect, this changes the current
+ /// foreground color for subsequent operations.
+ ///
+ /// @param x is the horizontal center of the ellipse.
+ /// @param y is the vertical center of the ellipse.
+ /// @param radius1 defines the horizontal width of the ellipse.
+ /// @param radius2 defines the vertical width of the ellipse.
+ /// @param color defines the foreground color.
+ /// @param fillit defines whether the circle is filled or not.
+ /// @returns success/failure code. @see RetCode_t.
+ ///
+ RetCode_t ellipse(unsigned int x, unsigned int y, unsigned int radius1, unsigned int radius1,
+ color_t color, fill_t fillit = NOFILL);
+
+ /// Draw an Ellipse
+ ///
+ /// Draws it using the foreground color setting.
+ ///
+ /// @param x is the horizontal center of the ellipse.
+ /// @param y is the vertical center of the ellipse.
+ /// @param radius1 defines the horizontal width of the ellipse.
+ /// @param radius2 defines the vertical width of the ellipse.
+ /// @param fillit defines whether the circle is filled or not.
+ /// @returns success/failure code. @see RetCode_t.
+ ///
+ RetCode_t ellipse(unsigned int x, unsigned int y, unsigned int radius1, unsigned int radius1, fill_t fillit = NOFILL);
+
+ /// Control display power
+ ///
+ /// @param on when set to true will turn on the display, when false it is turned off.
+ /// @returns success/failure code. @see RetCode_t.
+ ///
+ RetCode_t Power(bool on);
+
+ /// Reset the display controller via the Software Reset interface.
+ ///
+ /// @returns success/failure code. @see RetCode_t.
+ ///
+ RetCode_t Reset(void);
+
+ /// Set backlight brightness.
+ ///
+ /// When the built-in PWM is used to control the backlight, this
+ /// API can be used to set the brightness.
+ ///
+ /// @param brightness ranges from 0 (off) to 255 (full on)
+ /// @returns success/failure code. @see RetCode_t.
+ ///
+ RetCode_t Backlight_u8(unsigned char brightness);
+
+ /// Set backlight brightness.
+ ///
+ /// When the built-in PWM is used to control the backlight, this
+ /// API can be used to set the brightness.
+ ///
+ /// @param brightness ranges from 0.0 (off) to 1.0 (full on)
+ /// @returns success/failure code. @see RetCode_t.
+ ///
+ RetCode_t Backlight(float brightness);
+
+ /// Set a reference to a bitmap font, provided by the user.
+ ///
+ /// @note Tool to create the fonts is accessible from its creator
+ /// available at http://www.mikroe.com.
+ /// Change the data to an array of type char[].
+ ///
+ /// @param font is a pointer to a specially formed font array.
+ /// This special font array has a 4-byte header, followed by
+ /// the data:
+ /// - the number of bytes per char
+ /// - the vertical size in pixels for each character
+ /// - the horizontal size in pixels for each character
+ /// - the number of bytes per vertical line (width of the array)
+ /// @returns error code.
+ ///
+ RetCode_t set_font(const unsigned char * font);
+
+ /// Get the RGB value for a DOS color.
+ ///
+ /// @param i is the color, in the range 0 to 15;
+ /// @returns the RGB color of the selected index, or 0
+ /// if the index is out of bounds.
+ ///
+ color_t DOSColor(int i);
+
+ /// Get the color name (string) for a DOS color.
+ ///
+ /// @param i is the color, in the range 0 to 15;
+ /// @returns a pointer to a string with the color name,
+ /// or NULL if the index is out of bounds.
+ ///
+ const char * DOSColorNames(int i);
+
+
+#ifdef PERF_METRICS
+ /// Clear the performance metrics to zero.
+ void ClearPerformance();
+
+ /// Report the performance metrics for drawing functions using
+ /// printf()
+ void ReportPerformance();
+#endif
+
+private:
+ /// Set the SPI port frequency (in Hz).
+ ///
+ /// @note attempts to call this API at runtime, with the display
+ /// already online, cause the system to lockup.
+ /// Not sure why, so moving this to private to run once.
+ ///
+ /// This uses the mbed SPI driver, and is therefore dependent on
+ /// its capabilities. Limited tests were performed for the display
+ /// in the range of 1,000,000 to 50,000,000 Hz. The display was
+ /// a bit erratic above 20,000,000 Hz, so this became the default,
+ /// even though it might have been the bench-level wiring that posed
+ /// the limit.
+ ///
+ /// @returns success/failure code. @see RetCode_t.
+ ///
+ RetCode_t frequency(unsigned long Hz = RA8875_DEFAULT_SPI_FREQ);
+
+
+ /// Initialize the chip, which is normally done as part of the
+ /// constructor, so not called by the user.
+ ///
+ /// @returns success/failure code. @see RetCode_t.
+ ///
+ RetCode_t init(void);
+
+ /// Select the peripheral to use it.
+ ///
+ /// @param chipsel when true will select the peripheral, and when false
+ /// will deselect the chip. This is the logical selection, and
+ /// the pin selection is the invert of this.
+ /// @returns success/failure code. @see RetCode_t.
+ ///
+ RetCode_t select(bool chipsel);
+
+ /// The most primitive - to write a data value to the SPI interface.
+ ///
+ /// @param data is the value to write.
+ /// @returns a value read from the port, since SPI is often shift
+ /// in while shifting out.
+ ///
+ unsigned char spiwrite(unsigned char data);
+
+ /// The most primitive - to read a data value to the SPI interface.
+ ///
+ /// This is really just a specialcase of the write command, where
+ /// the value zero is written in order to read.
+ ///
+ /// @returns a value read from the port, since SPI is often shift
+ /// in while shifting out.
+ ///
+ unsigned char spiread();
+
+ SPI spi; ///< spi port
+ DigitalOut cs; ///< chip select pin, assumed active low
+ DigitalOut res; ///< reset pin, assumed active low
+ const unsigned char * font; ///< reference to an external font somewhere in memory
+
+ #ifdef PERF_METRICS
+ typedef enum
+ {
+ PRF_CLS,
+ PRF_DRAWPOINT,
+ PRF_DRAWLINE,
+ PRF_DRAWRECTANGLE,
+ PRF_DRAWROUNDEDRECTANGLE,
+ PRF_DRAWTRIANGLE,
+ PRF_DRAWCIRCLE,
+ PRF_DRAWELLIPSE,
+ METRICCOUNT
+ } method_e;
+ unsigned long metrics[METRICCOUNT];
+ void RegisterPerformance(method_e method);
+ Timer performance;
+ #endif
+};
+
+//} // namespace
+
+//using namespace SW_graphics;
+
+#endif
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