apps/examples/pdcurses: Add a very simple example that just shows the entire character set (7-bit only). It adapts to the size of the framebuffer and, hence, can be used with very tiny displays. In fact it looks really dumb on big displays.

examples/pdcurses/Makefile

@@ -44,6 +44,7 @@ CONFIG_EXAMPLES_PDCURSES_STACKSIZE ?= 2048
 PRIORITY = $(CONFIG_EXAMPLES_PDCURSES_PRIORITY)
 STACKSIZE = $(CONFIG_EXAMPLES_PDCURSES_STACKSIZE)
 
+CHARSETNAME = charset
 FIREWORKNAME = firework
 NEWDEMONAME = newdemo
 PANELNAME = panel
@@ -56,6 +57,7 @@ XMASNAME = xmas
 ASRCS =
 CSRCS = tui.c
 
+CHARSETMAINSRC = charset_main.c
 FIREWORKMAINSRC = firework_main.c
 NEWDEMOMAINSRC = newdemo_main.c
 PANELMAINSRC = panel_main.c
@@ -64,11 +66,12 @@ TESTCURSMAINSRC = testcurs_main.c
 TUIMAINSRC = tui_main.c
 WORMMAINSRC = worm_main.c
 XMASMAINSRC = xmas_main.c
-MAINSRCS = $(FIREWORKMAINSRC) $(NEWDEMOMAINSRC) $(PANELMAINSRC) $(RAINMAINSRC) $(TESTCURSMAINSRC) $(TUIMAINSRC) $(WORMMAINSRC) $(XMASMAINSRC)
+MAINSRCS = $(CHARSETMAINSRC) $(FIREWORKMAINSRC) $(NEWDEMOMAINSRC) $(PANELMAINSRC) $(RAINMAINSRC) $(TESTCURSMAINSRC) $(TUIMAINSRC) $(WORMMAINSRC) $(XMASMAINSRC)
 
 AOBJS = $(ASRCS:.S=$(OBJEXT))
 COBJS = $(CSRCS:.c=$(OBJEXT))
 
+CHARSETMAINOBJ = $(CHARSETMAINSRC:.c=$(OBJEXT))
 FIREWORKMAINOBJ = $(FIREWORKMAINSRC:.c=$(OBJEXT))
 NEWDEMOMAINOBJ = $(NEWDEMOMAINSRC:.c=$(OBJEXT))
 PANELMAINOBJ = $(PANELMAINSRC:.c=$(OBJEXT))
@@ -77,7 +80,7 @@ TESTCURSMAINOBJ = $(TESTCURSMAINSRC:.c=$(OBJEXT))
 TUIMAINOBJ = $(TUIMAINSRC:.c=$(OBJEXT))
 WORMMAINOBJ = $(WORMMAINSRC:.c=$(OBJEXT))
 XMASMAINOBJ = $(XMASMAINSRC:.c=$(OBJEXT))
-MAINOBJS = $(FIREWORKMAINOBJ) $(NEWDEMOMAINOBJ) $(PANELMAINOBJ) $(RAINMAINOBJ) $(TESTCURSMAINOBJ) $(TUIMAINOBJ) $(WORMMAINOBJ) $(XMASMAINOBJ)
+MAINOBJS = $(CHARSETMAINOBJ) $(FIREWORKMAINOBJ) $(NEWDEMOMAINOBJ) $(PANELMAINOBJ) $(RAINMAINOBJ) $(TESTCURSMAINOBJ) $(TUIMAINOBJ) $(WORMMAINOBJ) $(XMASMAINOBJ)
 
 SRCS = $(ASRCS) $(CSRCS) $(CXXSRCS) $(MAINSRCS)
 OBJS = $(AOBJS) $(COBJS) $(CXXOBJS)
@@ -119,6 +122,11 @@ $(MAINOBJS): %$(OBJEXT): %.c
 	$(Q) touch $@
 
 ifeq ($(CONFIG_BUILD_KERNEL),y)
+$(BIN_DIR)$(DELIM)$(CHARSETNAME): $(OBJS) $(CHARSETMAINOBJ)
+	@echo "LD: $(CHARSETNAME)"
+	$(Q) $(LD) $(LDELFFLAGS) $(LDLIBPATH) -o $(INSTALL_DIR)$(DELIM)$(CHARSETNAME) $(ARCHCRT0OBJ) $(CHARSETMAINOBJ) $(LDLIBS)
+	$(Q) $(NM) -u $(INSTALL_DIR)$(DELIM)$(CHARSETNAME)
+
 $(BIN_DIR)$(DELIM)$(FIREWORKNAME): $(OBJS) $(FIREWORKMAINOBJ)
 	@echo "LD: $(FIREWORKNAME)"
 	$(Q) $(LD) $(LDELFFLAGS) $(LDLIBPATH) -o $(INSTALL_DIR)$(DELIM)$(FIREWORKNAME) $(ARCHCRT0OBJ) $(FIREWORKMAINOBJ) $(LDLIBS)
@@ -159,7 +167,7 @@ $(BIN_DIR)$(DELIM)$(XMASNAME): $(OBJS) $(XMASMAINOBJ)
 	$(Q) $(LD) $(LDELFFLAGS) $(LDLIBPATH) -o $(INSTALL_DIR)$(DELIM)$(XMASNAME) $(ARCHCRT0OBJ) $(XMASMAINOBJ) $(LDLIBS)
 	$(Q) $(NM) -u $(INSTALL_DIR)$(DELIM)$(XMASNAME)
 
-install: $(BIN_DIR)$(DELIM)$(FIREWORKNAME) $(BIN_DIR)$(DELIM)$(NEWDEMONAME) $(BIN_DIR)$(DELIM)$(PANELNAME) $(BIN_DIR)$(DELIM)$(RAINNAME) $(BIN_DIR)$(DELIM)$(TESTCURSNAME) $(BIN_DIR)$(DELIM)$(TUINAME) $(BIN_DIR)$(DELIM)$(WORMNAME) $(BIN_DIR)$(DELIM)$(XMASNAME)
+install: $(BIN_DIR)$(DELIM)$(CHARSETNAME) $(BIN_DIR)$(DELIM)$(FIREWORKNAME) $(BIN_DIR)$(DELIM)$(NEWDEMONAME) $(BIN_DIR)$(DELIM)$(PANELNAME) $(BIN_DIR)$(DELIM)$(RAINNAME) $(BIN_DIR)$(DELIM)$(TESTCURSNAME) $(BIN_DIR)$(DELIM)$(TUINAME) $(BIN_DIR)$(DELIM)$(WORMNAME) $(BIN_DIR)$(DELIM)$(XMASNAME)
 else
 install:
 endif
@@ -167,6 +175,9 @@ endif
 preconfig:
 
 ifeq ($(CONFIG_NSH_BUILTIN_APPS),y)
+$(BUILTIN_REGISTRY)$(DELIM)$(CHARSETNAME)_main.bdat: $(DEPCONFIG) Makefile
+	$(call REGISTER,$(CHARSETNAME),$(PRIORITY),$(STACKSIZE),$(CHARSETNAME)_main)
+
 $(BUILTIN_REGISTRY)$(DELIM)$(FIREWORKNAME)_main.bdat: $(DEPCONFIG) Makefile
 	$(call REGISTER,$(FIREWORKNAME),$(PRIORITY),$(STACKSIZE),$(FIREWORKNAME)_main)
 
@@ -191,7 +202,7 @@ $(BUILTIN_REGISTRY)$(DELIM)$(WORMNAME)_main.bdat: $(DEPCONFIG) Makefile
 $(BUILTIN_REGISTRY)$(DELIM)$(XMASNAME)_main.bdat: $(DEPCONFIG) Makefile
 	$(call REGISTER,$(XMASNAME),$(PRIORITY),$(STACKSIZE),$(XMASNAME)_main)
 
-context: $(BUILTIN_REGISTRY)$(DELIM)$(FIREWORKNAME)_main.bdat $(BUILTIN_REGISTRY)$(DELIM)$(NEWDEMONAME)_main.bdat $(BUILTIN_REGISTRY)$(DELIM)$(PANELNAME)_main.bdat $(BUILTIN_REGISTRY)$(DELIM)$(RAINNAME)_main.bdat $(BUILTIN_REGISTRY)$(DELIM)$(TESTCURSNAME)_main.bdat $(BUILTIN_REGISTRY)$(DELIM)$(TUINAME)_main.bdat $(BUILTIN_REGISTRY)$(DELIM)$(WORMNAME)_main.bdat $(BUILTIN_REGISTRY)$(DELIM)$(XMASNAME)_main.bdat
+context: $(BUILTIN_REGISTRY)$(DELIM)$(CHARSETNAME)_main.bdat  $(BUILTIN_REGISTRY)$(DELIM)$(FIREWORKNAME)_main.bdat $(BUILTIN_REGISTRY)$(DELIM)$(NEWDEMONAME)_main.bdat $(BUILTIN_REGISTRY)$(DELIM)$(PANELNAME)_main.bdat $(BUILTIN_REGISTRY)$(DELIM)$(RAINNAME)_main.bdat $(BUILTIN_REGISTRY)$(DELIM)$(TESTCURSNAME)_main.bdat $(BUILTIN_REGISTRY)$(DELIM)$(TUINAME)_main.bdat $(BUILTIN_REGISTRY)$(DELIM)$(WORMNAME)_main.bdat $(BUILTIN_REGISTRY)$(DELIM)$(XMASNAME)_main.bdat
 else
 context:
 endif

examples/pdcurses/charset_main.c

@@ -0,0 +1,137 @@
+/****************************************************************************
+ * apps/examples/pdcurses/charset_main.c
+ *
+ *   Copyright (C) 2017 Gregory Nutt. All rights reserved.
+ *   Adapted by: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * 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.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include "graphics/curses.h"
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+#define FIRST_CH 0x20
+#define LAST_CH  0x7e
+#define NUM_CH   (LAST_CH - FIRST_CH + 1)
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+static short color_table[] =
+{
+  COLOR_RED, COLOR_BLUE, COLOR_GREEN, COLOR_CYAN,
+  COLOR_RED, COLOR_MAGENTA, COLOR_YELLOW, COLOR_WHITE
+};
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+#ifdef CONFIG_BUILD_KERNEL
+int main(int argc, FAR char *argv[])
+#else
+int charset_main(int argc, char *argv[])
+#endif
+{
+  chtype ch;
+  int lastch;
+  int width;
+  int height;
+  int xoffset;
+  int yoffset;
+  int row;
+  int col;
+  int i;
+
+  /* Initialize */
+
+  traceon();
+  initscr();
+  noecho();
+
+  /* Setup colors */
+
+  if (has_colors())
+    {
+      start_color();
+    }
+
+  for (i = 0; i < 8; i++)
+    {
+      init_pair(i, color_table[i], COLOR_BLACK);
+    }
+
+  /* Set up geometry */
+
+  width = COLS - 2;
+  if (width > NUM_CH)
+    {
+      width = NUM_CH;
+    }
+
+  xoffset = (COLS - width) / 2;
+
+  height = (NUM_CH + width - 1) / width;
+  lastch = LAST_CH;
+
+  if (height > LINES)
+    {
+      height = LINES;
+      lastch = FIRST_CH + width * height - 1;
+    }
+
+  yoffset = (LINES - height) / 2;
+
+  /* Now display the character set */
+
+  ch = FIRST_CH;
+  for (row = yoffset; row < yoffset + height; row++)
+    {
+      for (col = xoffset; col < xoffset + width; col++)
+        {
+          mvaddch(row, col, ch);
+          if (++ch > lastch)
+            {
+              break;
+            }
+        }
+    }
+
+  refresh();
+  endwin();
+  return 0;
+}

examples/pdcurses/firework_main.c

@@ -149,7 +149,14 @@ int main(int argc, FAR char *argv[])
 int firework_main(int argc, char *argv[])
 #endif
 {
-  int i, start, end, row, diff, flag, direction, seed;
+  int start;
+  int end;
+  int row;
+  int diff;
+  int flag;
+  int direction;
+  int seed;
+  int i;
 
   traceon();
   initscr();

graphics/pdcurs34/nuttx/pdcdisp.c

@@ -303,7 +303,7 @@ static inline void PDC_set_bg(FAR struct pdc_fbstate_s *fbstate,
 #endif
 
   /* Convert endcol to a byte offset (taking the ceiling so that includes
-   * the final byte than may have only one pixels in it).
+   * the final byte than may have only one pixel in it).
    */
 
   endcol   = (endcol + 1) >> 1;