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/****************************************************************************
* graphics/nxmu/nx_start.c
*
* Copyright (C) 2013 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 <stdlib.h>
#include <unistd.h>
#include <sched.h>
#include <errno.h>
#include <debug.h>
#include <nuttx/kthread.h>
#include <nuttx/nx/nx.h>
#include "nxfe.h"
#ifdef CONFIG_NX_NXSTART
/****************************************************************************
* Pre-Processor Definitions
****************************************************************************/
/****************************************************************************
* Private Types
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Public Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: nx_server
*
* Description:
* NX server thread. This is the entry point into the server kernel
* thread that serializes the multi-threaded accesses to the display.
*
* Input Parameters:
* Standard task start-up parameters (none of which are used)
*
* Returned Value:
* This function does not normally return but may exit with EXIT_FAILURE
* under certain error conditions.
*
****************************************************************************/
int nx_server(int argc, char *argv[])
{
FAR NX_DRIVERTYPE *dev;
int ret;
#if defined(CONFIG_NXSTART_EXTERNINIT)
/* Use external graphics driver initialization */
dev = up_nxdrvinit(CONFIG_NXSTART_DEVNO);
if (!dev)
{
gdbg("ERROR: up_nxdrvinit failed, devno=%d\n", CONFIG_NXSTART_DEVNO);
return EXIT_FAILURE;
}
#elif defined(CONFIG_NX_LCDDRIVER)
/* Initialize the LCD device */
ret = up_lcdinitialize();
if (ret < 0)
{
gdbg("ERROR: up_lcdinitialize failed: %d\n", ret);
return EXIT_FAILURE;
}
/* Get the device instance */
dev = up_lcdgetdev(CONFIG_NXSTART_DEVNO);
if (!dev)
{
gdbg("ERROR: up_lcdgetdev failed, devno=%d\n", CONFIG_NXSTART_DEVNO);
return EXIT_FAILURE;
}
/* Turn the LCD on at 75% power */
(void)dev->setpower(dev, ((3*CONFIG_LCD_MAXPOWER + 3)/4));
#else /* CONFIG_NX_LCDDRIVER */
/* Initialize the frame buffer device */
ret = up_fbinitialize();
if (ret < 0)
{
gdbg("ERROR: up_fbinitialize failed: %d\n", ret);
return EXIT_FAILURE;
}
dev = up_fbgetvplane(CONFIG_NXSTART_VPLANE);
if (!dev)
{
gdbg("ERROR: up_fbgetvplane failed, vplane=%d\n", CONFIG_NXSTART_VPLANE);
return EXIT_FAILURE;
}
#endif /* CONFIG_NX_LCDDRIVER */
/* Then start the server (nx_run does not normally return) */
ret = nx_run(dev);
gvdbg("nx_run returned: %d\n", ret);
return EXIT_FAILURE;
}
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: nx_start
*
* Description:
* nx_start() provides a wrapper function to simplify and standardize the
* starting of the NX server.
*
* NOTE: Currently, many applications include logic to start the NX
* server from application initialization logic. That, of course, cannot
* work in the NuttX kernel build because the resources required by the
* NX server are private to the kernel mode logic.
*
* Input Parameters:
* None
*
* Returned Value:
* Zero (OK) is returned on success. This indicates that the NX server
* has been successfully started, is running, and waiting to accept
* connections from NX clients.
*
* A negated errno value is returned on failure. The errno value indicates
* the nature of the failure.
*
****************************************************************************/
int nx_start(void)
{
pid_t server;
/* Start the server kernel thread */
gvdbg("Starting server task\n");
server = kernel_thread("NX Server", CONFIG_NXSTART_SERVERPRIO,
CONFIG_NXSTART_SERVERSTACK, nx_server, NULL);
if (server < 0)
{
int errcode = errno;
DEBUGASSERT(errcode > 0);
gdbg("ERROR: Failed to create nx_server kernel thread: %d\n", errcode);
return -errcode;
}
/* Wait a bit to make sure that the server get started. NOTE that this
* operation cannot be done from the IDLE thread!
*/
usleep(50*1000);
return OK;
}
#endif /* CONFIG_NX_NXSTART */
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