/****************************************************************************
* examples/lcdrw/lcdrw_main.c
*
* Copyright (C) 2011 Gregory Nutt. All rights reserved.
* Author: 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 <nuttx/config.h>
#include <stdio.h>
#include <stdlib.h>
#include <nuttx/lcd/lcd.h>
#include <nuttx/nx/nxglib.h>
/****************************************************************************
* Definitions
****************************************************************************/
/* Configuration ************************************************************/
/* Most of the NX configuration settings are probbably *not* needed by this
* example. But, presumeably you are using NX too and so the checks might
* be good for you.
*/
#ifndef CONFIG_NX
# error "CONFIG_NX must be defined to use this test"
#endif
#ifndef CONFIG_NX_LCDDRIVER
# error "CONFIG_NX_LCDDRIVER must be defined to use this test"
#endif
#ifndef CONFIG_EXAMPLES_LCDRW_BPP
# define CONFIG_EXAMPLES_LCDRW_BPP 16
#endif
#if CONFIG_EXAMPLES_LCDRW_BPP != 16
# error "Currently only RGB565 is supported -- feel free to extend"
#endif
#ifdef CONFIG_NX_DISABLE_16BPP
# error "CONFIG_NX_DISABLE_16BPP disables 16-bit support"
#endif
#ifndef CONFIG_EXAMPLES_LDCRW_DEVNO
# define CONFIG_EXAMPLES_LDCRW_DEVNO 0
#endif
#ifndef CONFIG_EXAMPLES_LDCRW_XRES
# define CONFIG_EXAMPLES_LDCRW_XRES 240
#endif
#ifndef CONFIG_EXAMPLES_LDCRW_YRES
# define CONFIG_EXAMPLES_LDCRW_YRES 320
#endif
/****************************************************************************
* Private Types
****************************************************************************/
struct lcdrw_instance_s
{
/* LCD device handle and planeinfo */
FAR struct lcd_dev_s *dev;
struct lcd_planeinfo_s pinfo;
};
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: lcdrw_initialize
****************************************************************************/
static inline int lcdrw_initialize(FAR struct lcdrw_instance_s *inst)
{
int ret;
/* Initialize the LCD device */
printf("screens_initialize: Initializing LCD\n");
ret = up_lcdinitialize();
if (ret < 0)
{
fprintf(stderr, "screens_initialize: up_lcdinitialize failed: %d\n", -ret);
return ret;
}
/* Get the device instance. */
printf("Get LCD instance\n");
inst->dev = up_lcdgetdev(CONFIG_EXAMPLES_LDCRW_DEVNO);
if (!inst->dev)
{
fprintf(stderr, "up_lcdgetdev failed, devno=%d\n", CONFIG_EXAMPLES_LDCRW_DEVNO);
return ret;
}
/* Turn the LCD on at 75% power. This should not be necessary. */
(void)inst->dev->setpower(inst->dev, ((3*CONFIG_LCD_MAXPOWER + 3)/4));
/* Get the planeinfo structure */
ret = inst->dev->getplaneinfo(inst->dev, 0, &inst->pinfo);
if (ret < 0)
{
fprintf(stderr, "getplaneinfo failed: %d\n", ret);
}
return ret;
}
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: lcdrw_main
****************************************************************************/
#ifdef CONFIG_BUILD_KERNEL
int main(int argc, FAR char *argv[])
#else
int lcdrw_main(int argc, char *argv[])
#endif
{
struct lcdrw_instance_s inst;
nxgl_coord_t row;
nxgl_coord_t col;
uint16_t value;
uint32_t offset;
FAR uint16_t *ptr;
int ret;
/* Initialize the LCD driver */
ret = lcdrw_initialize(&inst);
if (ret < 0)
{
exit(1);
}
/* Loop, writing all possible values to the LCD */
value = 0;
for (row = 0; row < CONFIG_EXAMPLES_LDCRW_YRES; row++)
{
/* Create a dummy row. The important thing is to try all
* bit combinations in a predictable way.
*/
ptr = (FAR uint16_t*)inst.pinfo.buffer;
for (col = 0; col < CONFIG_EXAMPLES_LDCRW_XRES; col++)
{
*ptr++ = value++;
}
/* Write the row to the LCD */
ret = inst.pinfo.putrun(row, 0, inst.pinfo.buffer,
CONFIG_EXAMPLES_LDCRW_XRES);
if (ret < 0)
{
fprintf(stderr, "putrun failed: %d\n", ret);
exit(1);
}
}
/* Print a header */
printf(" ");
for (col = 0; col < 15; col++)
{
printf("---%x ", col);
}
printf("---f\n");
/* Then read each line back from the LCD. */
offset = 0;
for (row = 0; row < CONFIG_EXAMPLES_LDCRW_YRES; row++)
{
/* Read the row */
ret = inst.pinfo.getrun(row, 0, inst.pinfo.buffer,
CONFIG_EXAMPLES_LDCRW_XRES);
if (ret < 0)
{
fprintf(stderr, "getrun failed: %d\n", ret);
exit(1);
}
/* Then dump the row to the display */
ptr = (FAR uint16_t*)inst.pinfo.buffer;
for (col = 0; col < CONFIG_EXAMPLES_LDCRW_XRES; col++)
{
if ((offset & 15) == 0)
{
printf("%06x ", offset);
}
value = *ptr++;
offset++;
if ((offset & 15) == 0)
{
printf("%04x\n", value);
}
else
{
printf("%04x ", value);
}
}
}
fflush(stdout);
return 0;
}
