From 5e03aead9c9e4b44148a651952dfc09851927106 Mon Sep 17 00:00:00 2001
From: patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3>
Date: Tue, 26 Mar 2013 18:18:50 +0000
Subject: More lpc17xx LCD logic (still incomplete)

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5787 42af7a65-404d-4744-a932-0658087f49c3
---
 nuttx/arch/arm/src/lpc17xx/lpc17_lcd.h | 35 ++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)

(limited to 'nuttx/arch/arm/src/lpc17xx/lpc17_lcd.h')

diff --git a/nuttx/arch/arm/src/lpc17xx/lpc17_lcd.h b/nuttx/arch/arm/src/lpc17xx/lpc17_lcd.h
index e86e83dfa..e17a8cc53 100644
--- a/nuttx/arch/arm/src/lpc17xx/lpc17_lcd.h
+++ b/nuttx/arch/arm/src/lpc17xx/lpc17_lcd.h
@@ -41,6 +41,8 @@
  ************************************************************************************/
 
 #include <nuttx/config.h>
+#include <nuttx/nx/nxglib.h>
+
 #include "chip/lpc17_lcd.h"
 
 /************************************************************************************
@@ -48,14 +50,26 @@
  ************************************************************************************/
 /* Configuration */
 
+/* Base address of the video RAM frame buffer */
+
+#ifndef CONFIG_LPC17_LCD_VRAMBASE
+#  define CONFIG_LPC17_LCD_VRAMBASE ((uint32_t)LPC17_EXTDRAM_CS0 + 0x00010000)
+#endif
+
+/* LCD refresh rate */
+
 #ifndef CONFIG_LPC17_LCD_REFRESH_FREQ
 #  define CONFIG_LPC17_LCD_REFRESH_FREQ (50)    /* Hz */
 #endif
 
+/* Bits per pixel */
+
 #ifndef CONFIG_LPC17_LCD_BPP
 #  define CONFIG_LPC17_LCD_BPP 16  /* Bytes per pixel */
 #endif
 
+/* Color format */
+
 #undef FB_FMT
 #if CONFIG_LPC17_LCD_BPP == 16
 #  define FB_FMT FB_FMT_RGB16_565
@@ -65,6 +79,12 @@
 #  error "Unsupported BPP"
 #endif
 
+#ifndef CONFIG_LPC17_LCD_BACKCOLOR
+#  define CONFIG_LPC17_LCD_BACKCOLOR 0  /* Initial background color */
+#endif
+
+/* Horizontal video characteristics */
+
 #ifndef CONFIG_LPC17_LCD_HWIDTH
 #  define CONFIG_LPC17_LCD_HWIDTH 480 /* Width in pixels */
 #endif
@@ -81,6 +101,8 @@
 #  define CONFIG_LPC17_LCD_HBACKPORCH 40
 #endif
 
+/* Vertical video characteristics */
+
 #ifndef CONFIG_LPC17_LCD_VHEIGHT
 #  define CONFIG_LPC17_LCD_VHEIGHT 272 /* Height in rows */
 #endif
@@ -112,4 +134,17 @@
  * include/nuttx/fb.h.
  */
 
+/************************************************************************************
+ * Name:  lpc17_lcdclear
+ *
+ * Description:
+ *   This is a non-standard LCD interface just for the LPC17xx.  Clearing the display
+ *   in the normal way by writing a sequences of runs that covers the entire display
+ *   can be slow.  Here the dispaly is cleared by simply setting all VRAM memory to
+ *   the specified color.
+ *
+ ************************************************************************************/
+
+void lpc17_lcdclear(nxgl_mxpixel_t color);
+
 #endif /* __ARCH_ARM_SRC_LPC17XX_LPC17_LCD_H */
-- 
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