Add apps/system/ramtest. I will use this for the LPC1788 SDRAM bringup

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5791 42af7a65-404d-4744-a932-0658087f49c3

ChangeLog

@@ -4457,4 +4457,6 @@
 	  konfig-frontends tool (2013-03-25).
 	* configs/twr-k60n512:  Converted configurations to use the
 	  konfig-frontends tool (2013-03-25).
+	* arch/arm/src/lpc17xx/lpc17_lcd.c:  Add an LCD framebuffer drier
+	  for the LPC177x/8x family.
 

arch/arm/src/lpc17xx/Kconfig

@@ -654,6 +654,14 @@ config LPC17_LCD_TFTPANEL
 		display panels require the digital color value of each pixel to be
 		applied to the display data inputs.
 
+config LPC17_LCD_MONOCHROME
+	bool "Monochrome LCD"
+	default n
+	depends on !LPC17_LCD_TFTPANEL
+	---help---
+		STN LCD monochrome/color selection.  Selects monochrome LCD.  This
+		selection has no meaning for a TFT panel.
+
 choice
 	prompt "Bits per pixel"
 	default LPC17_LCD_BPP24 if LPC17_LCD_TFTPANEL
@@ -673,6 +681,7 @@ config LPC17_LCD_BPP8
 
 config LPC17_LCD_BPP16
 	bool "16 bit per pixel"
+	depends on !LPC17_LCD_MONOCHROME
 
 config LPC17_LCD_BPP24
 	bool "24 bit per pixel"
@@ -680,9 +689,11 @@ config LPC17_LCD_BPP24
 
 config LPC17_LCD_BPP16_565
 	bool "16 bpp, 5:6:5 mode"
+	depends on !LPC17_LCD_MONOCHROME
 
 config LPC17_LCD_BPP12_444
 	bool "12 bpp, 4:4:4 mode"
+	depends on !LPC17_LCD_MONOCHROME
 
 endchoice
 

arch/arm/src/lpc17xx/lpc17_lcd.c

@@ -563,6 +563,30 @@ int up_fbinitialize(void)
   regval &= ~LCD_CTRL_BGR;
   putreg32(regval, LPC17_LCD_CTRL);
 
+  /* Select monochrome or color LCD */
+
+#ifdef CONFIG_LPC17_LCD_MONOCHROME
+  /* Select monochrome LCD */
+
+  regval &= ~LCD_CTRL_BGR;
+  putreg32(regval, LPC17_LCD_CTRL);
+
+  /* Select 4- or 8-bit monochrome interface */
+
+#if LPC17_BPP > 4
+  regval |= LCD_CTRL_LCDMONO8;
+#else
+  regval &= ~LCD_CTRL_LCDMONO8;
+#endif
+  putreg32(regval, LPC17_LCD_CTRL);
+
+#else
+  /* Select color LCD */
+
+  regval &= ~(LCD_CTRL_LCDBW | LCD_CTRL_LCDMONO8);
+  putreg32(regval, LPC17_LCD_CTRL);
+#endif
+
   /* Little endian byte order */
 
   regval &= ~LCD_CTRL_BEBO;

fs/fs_select.c

@@ -117,9 +117,9 @@ int select(int nfds, FAR fd_set *readfds, FAR fd_set *writefds,
     {
       /* Check if any monitor operation is requested on this fd */
 
-      if (readfds && FD_ISSET(fd, readfds) ||
-          writefds && FD_ISSET(fd, writefds) ||
-          exceptfds && FD_ISSET(fd, exceptfds))
+      if ((readfds   && FD_ISSET(fd, readfds))  ||
+          (writefds  && FD_ISSET(fd, writefds)) ||
+          (exceptfds && FD_ISSET(fd, exceptfds)))
         {
           /* Yes.. increment the count of pollfds structures needed */