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Add apps/examples/nxhello -- a VERY simple graphics example

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3797 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo 2011-07-18 22:22:02 +00:00
parent 83af6898f3
commit ca9d93839e
6 changed files with 1049 additions and 1 deletions
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3
ChangeLog.txt
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@ -74,4 +74,7 @@
* apps/examples/nx and nxtext: These examples can now be built as NSH
"built-in" commands.
* apps/examples/nxhello: The simplest graphics example: It just says
"Hello, World!" in the center of the display. This example can also be
built as an NSH "built-in" command.

34
examples/README.txt
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@ -307,7 +307,39 @@ examples/nxflat
the NXFLAT format and installed in a ROMFS file system. At run time,
each program in the ROMFS file system is executed. Requires CONFIG_NXFLAT.
examples/nxtest
examplex/nxhello
^^^^^^^^^^^^^^^^
A very simple graphics example that just says "Hello, World!" in the
center of the display.
The following configuration options can be selected:
CONFIG_EXAMPLES_NXHELLO_BUILTIN -- Build the NXHELLO example as a "built-in"
that can be executed from the NSH command line
CONFIG_EXAMPLES_NXHELLO_VPLANE -- The plane to select from the frame-
buffer driver for use in the test. Default: 0
CONFIG_EXAMPLES_NXHELLO_DEVNO - The LCD device to select from the LCD
driver for use in the test: Default: 0
CONFIG_EXAMPLES_NXHELLO_BGCOLOR -- The color of the background. Default
depends on CONFIG_EXAMPLES_NXHELLO_BPP.
CONFIG_EXAMPLES_NXHELLO_FONTCOLOR -- The color of the fonts used in the
background window. Default depends on CONFIG_EXAMPLES_NXHELLO_BPP.
CONFIG_EXAMPLES_NXHELLO_BPP -- Pixels per pixel to use. Valid options
include 2, 4, 8, 16, 24, and 32. Default is 32.
CONFIG_EXAMPLES_NXHELLO_EXTERNINIT - The driver for the graphics device on
this platform requires some unusual initialization. This is the
for, for example, SPI LCD/OLED devices. If this configuration is
selected, then the platform code must provide an LCD initialization
function with a prototype like:
#ifdef CONFIG_NX_LCDDRIVER
FAR struct lcd_dev_s *up_nxdrvinit(unsigned int devno);
#else
FAR struct fb_vtable_s *up_nxdrvinit(unsigned int devno);
#endif
examples/nxtext
^^^^^^^^^^^^^^^
This directory contains another simple test of a subset of the NX APIs

105
examples/nxhello/Makefile Normal file
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@ -0,0 +1,105 @@
############################################################################
# apps/examples/nxhello/Makefile
#
# Copyright (C) 2011 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.
#
############################################################################
-include $(TOPDIR)/.config
-include $(TOPDIR)/Make.defs
include $(APPDIR)/Make.defs
# NuttX NX Graphics Example.
ASRCS =
CSRCS = nxhello_main.c nxhello_bkgd.c
AOBJS = $(ASRCS:.S=$(OBJEXT))
COBJS = $(CSRCS:.c=$(OBJEXT))
SRCS = $(ASRCS) $(CSRCS)
OBJS = $(AOBJS) $(COBJS)
ifeq ($(WINTOOL),y)
BIN = "${shell cygpath -w $(APPDIR)/libapps$(LIBEXT)}"
else
BIN = "$(APPDIR)/libapps$(LIBEXT)"
endif
ROOTDEPPATH = --dep-path .
# NXHELLO built-in application info
APPNAME = nxhello
PRIORITY = SCHED_PRIORITY_DEFAULT
STACKSIZE = 2048
# Common build
VPATH =
all: .built
.PHONY: context clean depend distclean
$(AOBJS): %$(OBJEXT): %.S
$(call ASSEMBLE, $<, $@)
$(COBJS): %$(OBJEXT): %.c
$(call COMPILE, $<, $@)
.built: $(OBJS)
@( for obj in $(OBJS) ; do \
$(call ARCHIVE, $(BIN), $${obj}); \
done ; )
@touch .built
.context:
ifeq ($(CONFIG_EXAMPLES_NXHELLO_BUILTIN),y)
$(call REGISTER,$(APPNAME),$(PRIORITY),$(STACKSIZE),$(APPNAME)_main)
@touch $@
endif
context: .context
.depend: Makefile $(SRCS)
@$(MKDEP) $(ROOTDEPPATH) $(CC) -- $(CFLAGS) -- $(SRCS) >Make.dep
@touch $@
depend: .depend
clean:
@rm -f *.o *~ .*.swp .built
$(call CLEAN)
distclean: clean
@rm -f Make.dep .depend
-include Make.dep

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examples/nxhello/nxhello.h Normal file
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@ -0,0 +1,189 @@
/****************************************************************************
* examples/nxhello/nxhello.h
*
* Copyright (C) 2011 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 __APPS_EXAMPLES_NXHELLO_NXHELLO_H
#define __APPS_EXAMPLES_NXHELLO_NXHELLO_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdint.h>
#include <stdbool.h>
#include <semaphore.h>
#include <nuttx/nx.h>
#include <nuttx/nxglib.h>
/****************************************************************************
* Definitions
****************************************************************************/
/* Configuration ************************************************************/
#ifndef CONFIG_NX
# error "NX is not enabled (CONFIG_NX)"
#endif
#ifndef CONFIG_EXAMPLES_NXHELLO_VPLANE
# define CONFIG_EXAMPLES_NXHELLO_VPLANE 0
#endif
#ifndef CONFIG_EXAMPLES_NXHELLO_BPP
# define CONFIG_EXAMPLES_NXHELLO_BPP 32
#endif
#ifndef CONFIG_EXAMPLES_NXHELLO_BGCOLOR
# if CONFIG_EXAMPLES_NXHELLO_BPP == 24 || CONFIG_EXAMPLES_NXHELLO_BPP == 32
# define CONFIG_EXAMPLES_NXHELLO_BGCOLOR 0x007b68ee
# elif CONFIG_EXAMPLES_NXHELLO_BPP == 16
# define CONFIG_EXAMPLES_NXHELLO_BGCOLOR 0x7b5d
# else
# define CONFIG_EXAMPLES_NXHELLO_BGCOLOR ' '
# endif
#endif
#ifndef CONFIG_EXAMPLES_NXHELLO_FONTCOLOR
# if CONFIG_EXAMPLES_NXHELLO_BPP == 24 || CONFIG_EXAMPLES_NXHELLO_BPP == 32
# define CONFIG_EXAMPLES_NXHELLO_FONTCOLOR 0x00000000
# elif CONFIG_EXAMPLES_NXHELLO_BPP == 16
# define CONFIG_EXAMPLES_NXHELLO_FONTCOLOR 0x0000
# else
# define CONFIG_EXAMPLES_NXHELLO_FONTCOLOR 'F'
# endif
#endif
/* Debug ********************************************************************/
#ifdef CONFIG_CPP_HAVE_VARARGS
# ifdef CONFIG_DEBUG
# define message(...) lib_lowprintf(__VA_ARGS__)
# define msgflush()
# else
# define message(...) printf(__VA_ARGS__)
# define msgflush() fflush(stdout)
# endif
#else
# ifdef CONFIG_DEBUG
# define message lib_lowprintf
# define msgflush()
# else
# define message printf
# define msgflush() fflush(stdout)
# endif
#endif
/****************************************************************************
* Public Types
****************************************************************************/
enum exitcode_e
{
NXEXIT_SUCCESS = 0,
NXEXIT_EXTINITIALIZE,
NXEXIT_FBINITIALIZE,
NXEXIT_FBGETVPLANE,
NXEXIT_LCDINITIALIZE,
NXEXIT_LCDGETDEV,
NXEXIT_NXOPEN,
NXEXIT_NXREQUESTBKGD,
NXEXIT_NXSETBGCOLOR
};
/* Describes one cached glyph bitmap */
struct nxhello_glyph_s
{
uint8_t code; /* Character code */
uint8_t height; /* Height of this glyph (in rows) */
uint8_t width; /* Width of this glyph (in pixels) */
uint8_t stride; /* Width of the glyph row (in bytes) */
uint8_t usecnt; /* Use count */
FAR uint8_t *bitmap; /* Allocated bitmap memory */
};
/* Describes on character on the display */
struct nxhello_bitmap_s
{
uint8_t code; /* Character code */
uint8_t flags; /* See BMFLAGS_* */
struct nxgl_point_s pos; /* Character position */
};
struct nxhello_data_s
{
/* The NX handle */
NXHANDLE hnx;
NXHANDLE hbkgd;
/* The screen resolution */
nxgl_coord_t xres;
nxgl_coord_t yres;
volatile bool havepos;
sem_t sem;
volatile int code;
};
/****************************************************************************
* Public Variables
****************************************************************************/
/* NXHELLO state data */
extern struct nxhello_data_s g_nxhello;
/* NX callback vtables */
extern const struct nx_callback_s g_bgcb;
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
#ifdef CONFIG_EXAMPLES_NXHELLO_EXTERNINIT
extern FAR NX_DRIVERTYPE *up_nxdrvinit(unsigned int devno);
#endif
/* Background window interfaces */
extern void nxhello_hello(NXWINDOW hwnd);
#endif /* __APPS_EXAMPLES_NXHELLO_NXHELLO_H */

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examples/nxhello/nxhello_bkgd.c Normal file
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/****************************************************************************
* examples/nxhello/nxhello_bkgd.c
*
* Copyright (C) 2011 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.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdint.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <semaphore.h>
#include <errno.h>
#include <debug.h>
#include <nuttx/nx.h>
#include <nuttx/nxglib.h>
#include <nuttx/nxfonts.h>
#include "nxhello.h"
/****************************************************************************
* Definitions
****************************************************************************/
/* Select renderer -- Some additional logic would be required to support
* pixel depths that are not directly addressable (1,2,4, and 24).
*/
#if CONFIG_EXAMPLES_NXHELLO_BPP == 1
# define RENDERER nxf_convert_1bpp
#elif CONFIG_EXAMPLES_NXHELLO_BPP == 2
# define RENDERER nxf_convert_2bpp
#elif CONFIG_EXAMPLES_NXHELLO_BPP == 4
# define RENDERER nxf_convert_4bpp
#elif CONFIG_EXAMPLES_NXHELLO_BPP == 8
# define RENDERER nxf_convert_8bpp
#elif CONFIG_EXAMPLES_NXHELLO_BPP == 16
# define RENDERER nxf_convert_16bpp
#elif CONFIG_EXAMPLES_NXHELLO_BPP == 24
# define RENDERER nxf_convert_24bpp
#elif CONFIG_EXAMPLES_NXHELLO_BPP == 32
# define RENDERER nxf_convert_32bpp
#else
# error "Unsupported CONFIG_EXAMPLES_NXHELLO_BPP"
#endif
/****************************************************************************
* Private Types
****************************************************************************/
/****************************************************************************
* Private Function Prototypes
****************************************************************************/
static void nxhello_redraw(NXWINDOW hwnd, FAR const struct nxgl_rect_s *rect,
bool morem, FAR void *arg);
static void nxhello_position(NXWINDOW hwnd, FAR const struct nxgl_size_s *size,
FAR const struct nxgl_point_s *pos,
FAR const struct nxgl_rect_s *bounds,
FAR void *arg);
#ifdef CONFIG_NX_MOUSE
static void nxhello_mousein(NXWINDOW hwnd, FAR const struct nxgl_point_s *pos,
uint8_t buttons, FAR void *arg);
#endif
#ifdef CONFIG_NX_KBD
static void nxhello_kbdin(NXWINDOW hwnd, uint8_t nch, FAR const uint8_t *ch,
FAR void *arg);
#endif
/****************************************************************************
* Private Data
****************************************************************************/
static const char g_hello[] = "Hello, World!";
/****************************************************************************
* Public Data
****************************************************************************/
/* Background window call table */
const struct nx_callback_s g_bgcb =
{
nxhello_redraw, /* redraw */
nxhello_position /* position */
#ifdef CONFIG_NX_MOUSE
, nxhello_mousein /* mousein */
#endif
#ifdef CONFIG_NX_KBD
, nxhello_kbdin /* my kbdin */
#endif
};
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: nxhello_redraw
****************************************************************************/
static void nxhello_redraw(NXWINDOW hwnd, FAR const struct nxgl_rect_s *rect,
bool more, FAR void *arg)
{
gvdbg("hwnd=%p rect={(%d,%d),(%d,%d)} more=%s\n",
hwnd, rect->pt1.x, rect->pt1.y, rect->pt2.x, rect->pt2.y,
more ? "true" : "false");
}
/****************************************************************************
* Name: nxhello_position
****************************************************************************/
static void nxhello_position(NXWINDOW hwnd, FAR const struct nxgl_size_s *size,
FAR const struct nxgl_point_s *pos,
FAR const struct nxgl_rect_s *bounds,
FAR void *arg)
{
/* Report the position */
gvdbg("hwnd=%p size=(%d,%d) pos=(%d,%d) bounds={(%d,%d),(%d,%d)}\n",
hwnd, size->w, size->h, pos->x, pos->y,
bounds->pt1.x, bounds->pt1.y, bounds->pt2.x, bounds->pt2.y);
/* Have we picked off the window bounds yet? */
if (!g_nxhello.havepos)
{
/* Save the background window handle */
g_nxhello.hbkgd = hwnd;
/* Save the window limits */
g_nxhello.xres = bounds->pt2.x + 1;
g_nxhello.yres = bounds->pt2.y + 1;
g_nxhello.havepos = true;
sem_post(&g_nxhello.sem);
gvdbg("Have xres=%d yres=%d\n", g_nxhello.xres, g_nxhello.yres);
}
}
/****************************************************************************
* Name: nxhello_mousein
****************************************************************************/
#ifdef CONFIG_NX_MOUSE
static void nxhello_mousein(NXWINDOW hwnd, FAR const struct nxgl_point_s *pos,
uint8_t buttons, FAR void *arg)
{
message("nxhello_mousein: hwnd=%p pos=(%d,%d) button=%02x\n",
hwnd, pos->x, pos->y, buttons);
}
#endif
/****************************************************************************
* Name: nxhello_kbdin
****************************************************************************/
#ifdef CONFIG_NX_KBD
static void nxhello_kbdin(NXWINDOW hwnd, uint8_t nch, FAR const uint8_t *ch,
FAR void *arg)
{
gvdbg("hwnd=%p nch=%d\n", hwnd, nch);
/* In this example, there is no keyboard so a keyboard event is not
* expected.
*/
message("nxhello_kbdin: Unexpected keyboard callback\n");
}
#endif
/****************************************************************************
* Name: nxhello_center
****************************************************************************/
static void nxhello_center(FAR struct nxgl_point_s *pos,
FAR const struct nx_font_s *fontset)
{
FAR const struct nx_fontbitmap_s *fbm;
FAR uint8_t *ptr;
unsigned int width;
/* Get the width of the collection of characters so that we can center the
* hello world message.
*/
for (ptr = (uint8_t*)g_hello, width = 0; *ptr; ptr++)
{
/* Get the font bitmap for this character */
fbm = nxf_getbitmap(*ptr);
if (fbm)
{
/* Add the font size */
width += fbm->metric.width;
}
else
{
/* Use the width of a space */
width += fontset->spwidth;
}
}
/* Now we know how to center the string. Create a the position and
* the bounding box
*/
pos->x = (g_nxhello.xres - width) / 2;
pos->y = (g_nxhello.yres - fbm->metric.height) / 2;
}
/****************************************************************************
* Name: nxhello_initglyph
****************************************************************************/
static void nxhello_initglyph(FAR uint8_t *glyph, uint8_t height,
uint8_t width, uint8_t stride)
{
FAR nxgl_mxpixel_t *ptr;
#if CONFIG_EXAMPLES_NXHELLO_BPP < 8
nxgl_mxpixel_t pixel;
#endif
unsigned int row;
unsigned int col;
/* Initialize the glyph memory to the background color */
#if CONFIG_EXAMPLES_NXHELLO_BPP < 8
pixel = CONFIG_EXAMPLES_NXHELLO_BGCOLOR;
#if CONFIG_NX_NPLANES > 1
# warning "More logic is needed for the case where CONFIG_NX_PLANES > 1"
#endif
# if CONFIG_EXAMPLES_NXHELLO_BPP == 1
/* Pack 1-bit pixels into a 2-bits */
pixel &= 0x01;
pixel = (pixel) << 1 |pixel;
# endif
# if CONFIG_EXAMPLES_NXHELLO_BPP < 4
/* Pack 2-bit pixels into a nibble */
pixel &= 0x03;
pixel = (pixel) << 2 |pixel;
# endif
/* Pack 4-bit nibbles into a byte */
pixel &= 0x0f;
pixel = (pixel) << 4 | pixel;
ptr = (FAR nxgl_mxpixel_t *)glyph;
for (row = 0; row < fheight; row++)
{
for (col = 0; col < stride; col++)
{
/* Transfer the packed bytes into the buffer */
*ptr++ = pixel;
}
}
#elif CONFIG_EXAMPLES_NXHELLO_BPP == 24
# error "Additional logic is needed here for 24bpp support"
#else /* CONFIG_EXAMPLES_NXHELLO_BPP = {8,16,32} */
ptr = (FAR nxgl_mxpixel_t *)glyph;
for (row = 0; row < height; row++)
{
/* Just copy the color value into the glyph memory */
for (col = 0; col < width; col++)
{
*ptr++ = CONFIG_EXAMPLES_NXHELLO_BGCOLOR;
#if CONFIG_NX_NPLANES > 1
# warning "More logic is needed for the case where CONFIG_NX_PLANES > 1"
#endif
}
}
#endif
}
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: nxhello_write
*
* Description:
* Put a sequence of bytes in the window.
*
****************************************************************************/
void nxhello_hello(NXWINDOW hwnd)
{
FAR const struct nx_font_s *fontset;
FAR const struct nx_fontbitmap_s *fbm;
FAR uint8_t *glyph;
FAR const char *ptr;
FAR struct nxgl_point_s pos;
FAR struct nxgl_rect_s dest;
FAR const void *src[CONFIG_NX_NPLANES];
unsigned int glyphsize;
int ret;
/* Get information about the font we are going to use */
fontset = nxf_getfontset();
/* Allocate a bit of memory to hold the largest rendered font */
glyphsize = (unsigned int)fontset->mxheight * (unsigned int)fontset->mxwidth;
glyph = (FAR uint8_t*)malloc(glyphsize);
/* NOTE: no check for failure to allocate the memory. In a real application
* you would need to handle that event.
*/
/* Get a position so the the "Hello, World!" string will be centered on the
* display.
*/
nxhello_center(&pos, fontset);
message("nxhello_hello: Position (%d,%d)\n", pos.x, pos.y);
/* Now we can say "hello" in the center of the display. */
for (ptr = g_hello; *ptr; ptr++)
{
/* Get the bitmap font for this ASCII code */
fbm = nxf_getbitmap(*ptr);
if (fbm)
{
uint8_t fheight; /* Height of this glyph (in rows) */
uint8_t fwidth; /* Width of this glyph (in pixels) */
uint8_t fstride; /* Width of the glyph row (in bytes) */
/* Get information about the fount bitmap */
fwidth = fbm->metric.width + fbm->metric.xoffset;
fheight = fbm->metric.height + fbm->metric.yoffset;
fstride = (fwidth * CONFIG_EXAMPLES_NXHELLO_BPP + 7) / 8;
/* Initialize the glyph memory to the background color */
nxhello_initglyph(glyph, fheight, fwidth, fstride);
/* Then render the glyph into the allocated memory */
#if CONFIG_NX_NPLANES > 1
# warning "More logic is needed for the case where CONFIG_NX_PLANES > 1"
#endif
(void)RENDERER((FAR nxgl_mxpixel_t*)glyph, fheight, fwidth,
fstride, fbm, CONFIG_EXAMPLES_NXHELLO_FONTCOLOR);
/* Describe the destination of the font with a rectangle */
dest.pt1.x = pos.x;
dest.pt1.y = pos.y;
dest.pt2.x = pos.x + fwidth - 1;
dest.pt2.y = pos.y + fheight - 1;
/* Then put the font on the display */
src[0] = (FAR const void *)glyph;
#if CONFIG_NX_NPLANES > 1
# warning "More logic is needed for the case where CONFIG_NX_PLANES > 1"
#endif
ret = nx_bitmap((NXWINDOW)hwnd, &dest, src, &pos, fstride);
if (ret < 0)
{
message("nxhello_write: nx_bitmapwindow failed: %d\n", errno);
}
/* Skip to the right the width of the font */
pos.x += fwidth;
}
else
{
/* No bitmap (probably because the font is a space). Skip to the
* right the width of a space.
*/
pos.x += fontset->spwidth;
}
}
}

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/****************************************************************************
* examples/nxhello/nxhello_main.c
*
* Copyright (C) 2011 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.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <stdint.h>
#include <stdbool.h>
#include <stdio.h>
#include <unistd.h>
#include <time.h>
#include <string.h>
#include <sched.h>
#include <pthread.h>
#include <errno.h>
#include <debug.h>
#ifdef CONFIG_NX_LCDDRIVER
# include <nuttx/lcd/lcd.h>
#else
# include <nuttx/fb.h>
#endif
#include <nuttx/arch.h>
#include <nuttx/nx.h>
#include <nuttx/nxglib.h>
#include "nxhello.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/* Configuration ************************************************************/
/* If not specified, assume that the hardware supports one video plane */
#ifndef CONFIG_EXAMPLES_NXHELLO_VPLANE
# define CONFIG_EXAMPLES_NXHELLO_VPLANE 0
#endif
/* If not specified, assume that the hardware supports one LCD device */
#ifndef CONFIG_EXAMPLES_NXHELLO_DEVNO
# define CONFIG_EXAMPLES_NXHELLO_DEVNO 0
#endif
/****************************************************************************
* Private Types
****************************************************************************/
/****************************************************************************
* Private Function Prototypes
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Public Data
****************************************************************************/
struct nxhello_data_s g_nxhello =
{
NULL, /* hnx */
NULL, /* hbkgd */
0, /* xres */
0, /* yres */
false, /* havpos */
{ 0 }, /* sem */
NXEXIT_SUCCESS /* exit code */
};
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: nxhello_initialize
****************************************************************************/
static inline int nxhello_initialize(void)
{
FAR NX_DRIVERTYPE *dev;
#if defined(CONFIG_EXAMPLES_NXHELLO_EXTERNINIT)
/* Use external graphics driver initialization */
message("nxhello_initialize: Initializing external graphics device\n");
dev = up_nxdrvinit(CONFIG_EXAMPLES_NXHELLO_DEVNO);
if (!dev)
{
message("nxhello_initialize: up_nxdrvinit failed, devno=%d\n",
CONFIG_EXAMPLES_NXHELLO_DEVNO);
g_nxhello.code = NXEXIT_EXTINITIALIZE;
return ERROR;
}
#elif defined(CONFIG_NX_LCDDRIVER)
int ret;
/* Initialize the LCD device */
message("nxhello_initialize: Initializing LCD\n");
ret = up_lcdinitialize();
if (ret < 0)
{
message("nxhello_initialize: up_lcdinitialize failed: %d\n", -ret);
g_nxhello.code = NXEXIT_LCDINITIALIZE;
return ERROR;
}
/* Get the device instance */
dev = up_lcdgetdev(CONFIG_EXAMPLES_NXHELLO_DEVNO);
if (!dev)
{
message("nxhello_initialize: up_lcdgetdev failed, devno=%d\n", CONFIG_EXAMPLES_NXHELLO_DEVNO);
g_nxhello.code = NXEXIT_LCDGETDEV;
return ERROR;
}
/* Turn the LCD on at 75% power */
(void)dev->setpower(dev, ((3*CONFIG_LCD_MAXPOWER + 3)/4));
#else
int ret;
/* Initialize the frame buffer device */
message("nxhello_initialize: Initializing framebuffer\n");
ret = up_fbinitialize();
if (ret < 0)
{
message("nxhello_initialize: up_fbinitialize failed: %d\n", -ret);
g_nxhello.code = NXEXIT_FBINITIALIZE;
return ERROR;
}
dev = up_fbgetvplane(CONFIG_EXAMPLES_NXHELLO_VPLANE);
if (!dev)
{
message("nxhello_initialize: up_fbgetvplane failed, vplane=%d\n", CONFIG_EXAMPLES_NXHELLO_VPLANE);
g_nxhello.code = NXEXIT_FBGETVPLANE;
return ERROR;
}
#endif
/* Then open NX */
message("nxhello_initialize: Open NX\n");
g_nxhello.hnx = nx_open(dev);
if (!g_nxhello.hnx)
{
message("nxhello_initialize: nx_open failed: %d\n", errno);
g_nxhello.code = NXEXIT_NXOPEN;
return ERROR;
}
return OK;
}
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: user_start/nxhello_main
****************************************************************************/
#ifdef CONFIG_EXAMPLES_NXHELLO_BUILTIN
# define MAIN_NAME nxhello_main
# define MAIN_NAME_STRING "nxhello_main"
#else
# define MAIN_NAME user_start
# define MAIN_NAME_STRING "user_start"
#endif
int MAIN_NAME(int argc, char *argv[])
{
nxgl_mxpixel_t color;
int ret;
/* Initialize NX */
ret = nxhello_initialize();
message(MAIN_NAME_STRING ": NX handle=%p\n", g_nxhello.hnx);
if (!g_nxhello.hnx || ret < 0)
{
message(MAIN_NAME_STRING ": Failed to get NX handle: %d\n", errno);
g_nxhello.code = NXEXIT_NXOPEN;
goto errout;
}
/* Set the background to the configured background color */
message(MAIN_NAME_STRING ": Set background color=%d\n",
CONFIG_EXAMPLES_NXHELLO_BGCOLOR);
color = CONFIG_EXAMPLES_NXHELLO_BGCOLOR;
ret = nx_setbgcolor(g_nxhello.hnx, &color);
if (ret < 0)
{
message(MAIN_NAME_STRING ": nx_setbgcolor failed: %d\n", errno);
g_nxhello.code = NXEXIT_NXSETBGCOLOR;
goto errout_with_nx;
}
/* Get the background window */
ret = nx_requestbkgd(g_nxhello.hnx, &g_bgcb, NULL);
if (ret < 0)
{
message(MAIN_NAME_STRING ": nx_setbgcolor failed: %d\n", errno);
g_nxhello.code = NXEXIT_NXREQUESTBKGD;
goto errout_with_nx;
}
/* Wait until we have the screen resolution. We'll have this immediately
* unless we are dealing with the NX server.
*/
while (!g_nxhello.havepos)
{
(void)sem_wait(&g_nxhello.sem);
}
message(MAIN_NAME_STRING ": Screen resolution (%d,%d)\n", g_nxhello.xres, g_nxhello.yres);
/* Now, say hello and exit, leeping a little before each. */
sleep(1);
nxhello_hello(g_nxhello.hbkgd);
sleep(1);
/* Release background */
(void)nx_releasebkgd(g_nxhello.hbkgd);
/* Close NX */
errout_with_nx:
message(MAIN_NAME_STRING ": Close NX\n");
nx_close(g_nxhello.hnx);
errout:
return g_nxhello.code;
}