Diff: RA8875.h

Revision:

101:e0aad446094a

Parent:

100:0b084475d5a9

Child:

102:fc60bfa0199f

diff -r 0b084475d5a9 -r e0aad446094a RA8875.h
--- a/RA8875.h	Sat Dec 19 15:55:09 2015 +0000
+++ b/RA8875.h	Sun Jan 17 22:16:37 2016 +0000
@@ -8,8 +8,13 @@
 /// It includes graphics acceleration capabilities for drawing primitives, 
 /// such as line, rectangle, circles, and more.
 ///
+/// It is not a display for super-fast animations, video, picture frames and so forth,
+/// at least when using the SPI ports. Performance has not been evaluated with one
+/// of the parallel port options.
+///
 /// The controller additionally supports backlight control (via PWM), keypad scanning
-/// (for a 4 x 5 matrix) and resistive touch-panel support. 
+/// (for a 4 x 5 matrix) and resistive touch-panel support. Others have provides
+/// support for a capacitive touch screen.
 ///
 /// @section Display_Config Display Configuration
 ///
@@ -53,6 +58,13 @@
 /// The keypad has a default keypad mapping, but there is an API that permits
 /// installing a custom keymap.
 ///
+/// @todo Add APIs for the 2nd PWM channel, which might be quite useful as a simple
+///     beeper.
+/// @todo Figure out how to "init()" in the constructor. I ran into some issues if
+///     the display was instantiated before main(), and the code would not run,
+///     thus the exposure and activation of the init() function. If the constructor
+///     was within main(), then it seemed to work as expected.
+///
 #ifndef RA8875_H
 #define RA8875_H
 #include <mbed.h>
@@ -1994,18 +2006,25 @@
 
     /// Internal function to put a character using the built-in (internal) font engine
     ///
-    /// @param[in] is the character to put to the screen.
+    /// @param[in] c is the character to put to the screen.
     /// @returns the character put.
     ///
     int _internal_putc(int c);
     
     /// Internal function to put a character using the external font engine
     ///
-    /// @param[in] is the character to put to the screen.
+    /// @param[in] c is the character to put to the screen.
     /// @returns the character put.
     ///
     int _external_putc(int c);
     
+    /// Internal function to get the actual width of a character when using the external font engine
+    ///
+    /// @param[in] c is the character to get the width.
+    /// @returns the width in pixels of the character. zero if not found.
+    ///
+    int _external_getCharWidth(int c);
+    
     /// Select the peripheral to use it.
     ///
     /// @param[in] chipsel when true will select the peripheral, and when false
@@ -2171,6 +2190,7 @@
 //     pc.printf("\r\nRA8875 Test - Build " __DATE__ " " __TIME__ "\r\n");
 // 
 //     pc.printf("Turning on display\r\n");
+//     lcd.init();
 //     lcd.Reset();
 //     lcd.Power(true);  // display power is on, but the backlight is independent
 //     lcd.Backlight(0.5);