diff --git a/include/nuttx/rgbcolors.h b/include/nuttx/rgbcolors.h
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+++ b/include/nuttx/rgbcolors.h
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+/****************************************************************************
+ * include/nuttx/rgbcolors.h
+ * User-friendly RGB color definitions
+ *
+ * Copyright (C) 2010 Gregory Nutt. All rights reserved.
+ * Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ * used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+#ifndef __INCLUDE_NUTTX_RGBCOLOR_H
+#define __INCLUDE_NUTTX_RGBCOLOR_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+/****************************************************************************
+ * Pre-Processor Definitions
+ ****************************************************************************/
+
+/* Color conversions. This macros converts RGB24 (8:8:8) to RGB16 (5:6:5):
+ *
+ * 00000000 RRRRRRRR BBBBBBBB GGGGGGGG -> RRRRRBBB BBBGGGGG
+ */
+
+#define RGB24TO16(rgb24) \
+ (((rgb24 >> 8) & 0xf800) | ((rgb24 >> 5) & 0x07e0) | ((rgb24 >> 3) & 0x001f))
+
+/* This macros converts RGB16 (5:6:5) to RGB24 (8:8:8):
+ *
+ * RRRRRBBB BBBGGGGG -> 00000000 RRRRRRRR BBBBBBBB GGGGGGGG
+ */
+
+#define RGB16TO24(rgb16) \
+ (((rgb16 & 0xf800) << 8) | ((rgb16 & 0x07e0) << 5) | ((rgb16 & 0x001f) << 3))
+
+/* RGB24-888: 00000000 RRRRRRRR GGGGGGGG BBBBBBBB */
+
+#define RGB24_BLACK 0x00000000
+#define RGB24_WHITE 0x00ffffff
+
+#define RGB24_BLUE 0x000000ff
+#define RGB24_GREEN 0x0000ff00
+#define RGB24_RED 0x00ff0000
+
+#define RGB24_NAVY 0x00000080
+#define RGB24_DARKBLUE 0x0000008b
+#define RGB24_DARKGREEN 0x00006400
+#define RGB24_DARKCYAN 0x00008b8b
+#define RGB24_CYAN 0x0000ffff
+#define RGB24_TURQUOISE 0x0040e0d0
+#define RGB24_INDIGO 0x004b0082
+#define RGB24_DARKRED 0x00800000
+#define RGB24_OLIVE 0x00808000
+#define RGB24_GRAY 0x00808080
+#define RGB24_SKYBLUE 0x0087ceeb
+#define RGB24_BLUEVIOLET 0x008a2be2
+#define RGB24_LIGHTGREEN 0x0090ee90
+#define RGB24_DARKVIOLET 0x009400d3
+#define RGB24_YELLOWGREEN 0x009acd32
+#define RGB24_BROWN 0x00a52a2a
+#define RGB24_DARKGRAY 0x00a9a9a9
+#define RGB24_SIENNA 0x00a0522d
+#define RGB24_LIGHTBLUE 0x00add8e6
+#define RGB24_GREENYELLOW 0x00adff2f
+#define RGB24_SILVER 0x00c0c0c0
+#define RGB24_LIGHTGREY 0x00d3d3d3
+#define RGB24_LIGHTCYAN 0x00e0ffff
+#define RGB24_VIOLET 0x00ee82ee
+#define RGB24_AZUR 0x00f0ffff
+#define RGB24_BEIGE 0x00f5f5dc
+#define RGB24_MAGENTA 0x00ff00ff
+#define RGB24_TOMATO 0x00ff6347
+#define RGB24_GOLD 0x00ffd700
+#define RGB24_ORANGE 0x00ffa500
+#define RGB24_SNOW 0x00fffafa
+#define RGB24_YELLOW 0x00ffff00
+
+/* RGB24-565: RRRRRGGG GGGBBBBB */
+
+#define RGB16_BLACK 0x0000
+#define RGB16_WHITE 0xffff
+
+#define RGB16_BLUE 0x001f
+#define RGB16_GREEN 0x07e0
+#define RGB16_RED 0xf800
+
+#define RGB16_NAVY 0x0010
+#define RGB16_DARKBLUE 0x0011
+#define RGB16_DARKGREEN 0x0320
+#define RGB16_DARKCYAN 0x0451
+#define RGB16_CYAN 0x07ff
+#define RGB16_TURQUOISE 0x471a
+#define RGB16_INDIGO 0x4810
+#define RGB16_DARKRED 0x8000
+#define RGB16_OLIVE 0x8400
+#define RGB16_GRAY 0x8410
+#define RGB16_SKYBLUE 0x867d
+#define RGB16_BLUEVIOLET 0x895c
+#define RGB16_LIGHTGREEN 0x9772
+#define RGB16_DARKVIOLET 0x901a
+#define RGB16_YELLOWGREEN 0x9e66
+#define RGB16_BROWN 0xa145
+#define RGB16_DARKGRAY 0xad55
+#define RGB16_SIENNA 0xa285
+#define RGB16_LIGHTBLUE 0xaedc
+#define RGB16_GREENYELLOW 0xafe5
+#define RGB16_SILVER 0xc618
+#define RGB16_LIGHTGREY 0xd69a
+#define RGB16_LIGHTCYAN 0xe7ff
+#define RGB16_VIOLET 0xec1d
+#define RGB16_AZUR 0xf7ff
+#define RGB16_BEIGE 0xf7bb
+#define RGB16_MAGENTA 0xf81f
+#define RGB16_TOMATO 0xfb08
+#define RGB16_GOLD 0xfea0
+#define RGB16_ORANGE 0xfd20
+#define RGB16_SNOW 0xffdf
+#define RGB16_YELLOW 0xffe0
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+#ifndef __ASSEMBLY__
+
+#ifdef __cplusplus
+#define EXTERN extern "C"
+extern "C" {
+#else
+#define EXTERN extern
+#endif
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+#undef EXTERN
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __ASSEMBLY__ */
+#endif /* __INCLUDE_NUTTX_RGBCOLOR_H */