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+/****************************************************************************
+ * examples/nxterm/nxterm_main.c
+ *
+ * Copyright (C) 2012 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 <sys/types.h>
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <string.h>
+#include <errno.h>
+#include <debug.h>
+
+#ifdef CONFIG_NX_LCDDRIVER
+# include <nuttx/lcd/lcd.h>
+#else
+# include <nuttx/video/fb.h>
+#endif
+
+#include <nuttx/arch.h>
+#include <nuttx/nx/nx.h>
+#include <nuttx/nx/nxglib.h>
+#include <nuttx/nx/nxfonts.h>
+#include <nuttx/nx/nxterm.h>
+
+#include <apps/nsh.h>
+
+#include "nxterm_internal.h"
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Types
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Function Prototypes
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+/* All example global variables are retained in a structure to minimize
+ * the chance of name collisions.
+ */
+
+struct nxterm_state_s g_nxterm_vars;
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: nxterm_initialize
+ ****************************************************************************/
+
+static int nxterm_initialize(void)
+{
+ struct sched_param param;
+ pthread_t thread;
+ pid_t servrid;
+ int ret;
+
+ /* Set the client task priority */
+
+ param.sched_priority = CONFIG_EXAMPLES_NXCON_CLIENTPRIO;
+ ret = sched_setparam(0, &param);
+ if (ret < 0)
+ {
+ message("nxterm_initialize: sched_setparam failed: %d\n" , ret);
+ return ERROR;
+ }
+
+ /* Start the server task */
+
+ message("nxterm_initialize: Starting nxterm_server task\n");
+ servrid = task_create("NX Server", CONFIG_EXAMPLES_NXCON_SERVERPRIO,
+ CONFIG_EXAMPLES_NXCON_STACKSIZE, nxterm_server, NULL);
+ if (servrid < 0)
+ {
+ message("nxterm_initialize: Failed to create nxterm_server task: %d\n", errno);
+ return ERROR;
+ }
+
+ /* Wait a bit to let the server get started */
+
+ sleep(1);
+
+ /* Connect to the server */
+
+ g_nxterm_vars.hnx = nx_connect();
+ if (g_nxterm_vars.hnx)
+ {
+ pthread_attr_t attr;
+
+ /* Start a separate thread to listen for server events. This is probably
+ * the least efficient way to do this, but it makes this example flow more
+ * smoothly.
+ */
+
+ (void)pthread_attr_init(&attr);
+ param.sched_priority = CONFIG_EXAMPLES_NXCON_LISTENERPRIO;
+ (void)pthread_attr_setschedparam(&attr, &param);
+ (void)pthread_attr_setstacksize(&attr, CONFIG_EXAMPLES_NXCON_STACKSIZE);
+
+ ret = pthread_create(&thread, &attr, nxterm_listener, NULL);
+ if (ret != 0)
+ {
+ printf("nxterm_initialize: pthread_create failed: %d\n", ret);
+ return ERROR;
+ }
+
+ /* Don't return until we are connected to the server */
+
+ while (!g_nxterm_vars.connected)
+ {
+ /* Wait for the listener thread to wake us up when we really
+ * are connected.
+ */
+
+ (void)sem_wait(&g_nxterm_vars.eventsem);
+ }
+ }
+ else
+ {
+ message("nxterm_initialize: nx_connect failed: %d\n", errno);
+ return ERROR;
+ }
+ return OK;
+}
+
+/****************************************************************************
+ * Name: nxterm_task
+ ****************************************************************************/
+
+static int nxterm_task(int argc, char **argv)
+{
+ /* If the console front end is selected, then run it on this thread */
+
+#ifdef CONFIG_NSH_CONSOLE
+ (void)nsh_consolemain(0, NULL);
+#endif
+
+ printf("nxterm_task: Unregister the NX console device\n");
+ (void)nxterm_unregister(g_nxterm_vars.hdrvr);
+
+ printf("nxterm_task: Close the window\n");
+ (void)nxtk_closewindow(g_nxterm_vars.hwnd);
+
+ /* Disconnect from the server */
+
+ printf("nxterm_task: Disconnect from the server\n");
+ nx_disconnect(g_nxterm_vars.hnx);
+
+ return EXIT_SUCCESS;
+}
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: nxterm_main
+ ****************************************************************************/
+
+#ifdef CONFIG_BUILD_KERNEL
+int main(int argc, FAR char *argv[])
+#else
+int nxterm_main(int argc, char **argv)
+#endif
+{
+ nxgl_mxpixel_t color;
+ int fd;
+ int ret;
+
+ /* General Initialization *************************************************/
+ /* Reset all global data */
+
+ message("nxterm_main: Started\n");
+ memset(&g_nxterm_vars, 0, sizeof(struct nxterm_state_s));
+
+ /* Call all C++ static constructors */
+
+#if defined(CONFIG_HAVE_CXX) && defined(CONFIG_HAVE_CXXINITIALIZE)
+ up_cxxinitialize();
+#endif
+
+ /* NSH Initialization *****************************************************/
+ /* Initialize the NSH library */
+
+ message("nxterm_main: Initialize NSH\n");
+ nsh_initialize();
+
+ /* If the Telnet console is selected as a front-end, then start the
+ * Telnet daemon.
+ */
+
+#ifdef CONFIG_NSH_TELNET
+ ret = nsh_telnetstart();
+ if (ret < 0)
+ {
+ /* The daemon is NOT running. Report the the error then fail...
+ * either with the serial console up or just exiting.
+ */
+
+ fprintf(stderr, "ERROR: Failed to start TELNET daemon: %d\n", ret);
+ }
+#endif
+ /* NX Initialization ******************************************************/
+ /* Initialize NX */
+
+ message("nxterm_main: Initialize NX\n");
+ ret = nxterm_initialize();
+ message("nxterm_main: NX handle=%p\n", g_nxterm_vars.hnx);
+ if (!g_nxterm_vars.hnx || ret < 0)
+ {
+ message("nxterm_main: Failed to get NX handle: %d\n", errno);
+ goto errout;
+ }
+
+ /* Set the background to the configured background color */
+
+ message("nxterm_main: Set background color=%d\n", CONFIG_EXAMPLES_NXCON_BGCOLOR);
+ color = CONFIG_EXAMPLES_NXCON_BGCOLOR;
+ ret = nx_setbgcolor(g_nxterm_vars.hnx, &color);
+ if (ret < 0)
+ {
+ message("nxterm_main: nx_setbgcolor failed: %d\n", errno);
+ goto errout_with_nx;
+ }
+
+ /* Window Configuration ***************************************************/
+ /* Create a window */
+
+ message("nxterm_main: Create window\n");
+ g_nxterm_vars.hwnd = nxtk_openwindow(g_nxterm_vars.hnx, &g_nxtermcb, NULL);
+ if (!g_nxterm_vars.hwnd)
+ {
+ message("nxterm_main: nxtk_openwindow failed: %d\n", errno);
+ goto errout_with_nx;
+ }
+ message("nxterm_main: hwnd=%p\n", g_nxterm_vars.hwnd);
+
+ /* Wait until we have the screen resolution. We'll have this immediately
+ * unless we are dealing with the NX server.
+ */
+
+ while (!g_nxterm_vars.haveres)
+ {
+ (void)sem_wait(&g_nxterm_vars.eventsem);
+ }
+ message("nxterm_main: Screen resolution (%d,%d)\n", g_nxterm_vars.xres, g_nxterm_vars.yres);
+
+ /* Determine the size and position of the window */
+
+ g_nxterm_vars.wndo.wsize.w = g_nxterm_vars.xres / 2 + g_nxterm_vars.xres / 4;
+ g_nxterm_vars.wndo.wsize.h = g_nxterm_vars.yres / 2 + g_nxterm_vars.yres / 4;
+
+ g_nxterm_vars.wpos.x = g_nxterm_vars.xres / 8;
+ g_nxterm_vars.wpos.y = g_nxterm_vars.yres / 8;
+
+ /* Set the window position */
+
+ message("nxterm_main: Set window position to (%d,%d)\n",
+ g_nxterm_vars.wpos.x, g_nxterm_vars.wpos.y);
+
+ ret = nxtk_setposition(g_nxterm_vars.hwnd, &g_nxterm_vars.wpos);
+ if (ret < 0)
+ {
+ message("nxterm_main: nxtk_setposition failed: %d\n", errno);
+ goto errout_with_hwnd;
+ }
+
+ /* Set the window size */
+
+ message("nxterm_main: Set window size to (%d,%d)\n",
+ g_nxterm_vars.wndo.wsize.w, g_nxterm_vars.wndo.wsize.h);
+
+ ret = nxtk_setsize(g_nxterm_vars.hwnd, &g_nxterm_vars.wndo.wsize);
+ if (ret < 0)
+ {
+ message("nxterm_main: nxtk_setsize failed: %d\n", errno);
+ goto errout_with_hwnd;
+ }
+
+ /* Open the toolbar */
+
+ message("nxterm_main: Add toolbar to window\n");
+ ret = nxtk_opentoolbar(g_nxterm_vars.hwnd, CONFIG_EXAMPLES_NXCON_TOOLBAR_HEIGHT, &g_nxtoolcb, NULL);
+ if (ret < 0)
+ {
+ message("nxterm_main: nxtk_opentoolbar failed: %d\n", errno);
+ goto errout_with_hwnd;
+ }
+
+ /* Sleep a little bit to allow the server to catch up */
+
+ sleep(2);
+
+ /* NxTerm Configuration ************************************************/
+ /* Use the window to create an NX console */
+
+ g_nxterm_vars.wndo.wcolor[0] = CONFIG_EXAMPLES_NXCON_WCOLOR;
+ g_nxterm_vars.wndo.fcolor[0] = CONFIG_EXAMPLES_NXCON_FONTCOLOR;
+ g_nxterm_vars.wndo.fontid = CONFIG_EXAMPLES_NXCON_FONTID;
+
+ g_nxterm_vars.hdrvr = nxtk_register(g_nxterm_vars.hwnd, &g_nxterm_vars.wndo, CONFIG_EXAMPLES_NXCON_MINOR);
+ if (!g_nxterm_vars.hdrvr)
+ {
+ message("nxterm_main: nxtk_register failed: %d\n", errno);
+ goto errout_with_hwnd;
+ }
+
+ /* Open the NxTerm driver */
+
+ fd = open(CONFIG_EXAMPLES_NXCON_DEVNAME, O_WRONLY);
+ if (fd < 0)
+ {
+ message("nxterm_main: open %s read-only failed: %d\n",
+ CONFIG_EXAMPLES_NXCON_DEVNAME, errno);
+ goto errout_with_driver;
+ }
+
+ /* Start Console Task *****************************************************/
+ /* Now re-direct stdout and stderr so that they use the NX console driver.
+ * Note that stdin is retained (file descriptor 0, probably the the serial console).
+ */
+
+ message("nxterm_main: Starting the console task\n");
+ msgflush();
+
+ (void)fflush(stdout);
+ (void)fflush(stderr);
+
+ (void)fclose(stdout);
+ (void)fclose(stderr);
+
+ (void)dup2(fd, 1);
+ (void)dup2(fd, 2);
+
+ /* And we can close our original driver file descriptor */
+
+ close(fd);
+
+ /* And start the console task. It will inherit stdin, stdout, and stderr
+ * from this task.
+ */
+
+ g_nxterm_vars.pid = task_create("NxTerm", CONFIG_EXAMPLES_NXTERM_PRIO,
+ CONFIG_EXAMPLES_NXTERM_STACKSIZE,
+ nxterm_task, NULL);
+ ASSERT(g_nxterm_vars.pid > 0);
+ return EXIT_SUCCESS;
+
+ /* Error Exits ************************************************************/
+
+errout_with_driver:
+ (void)nxterm_unregister(g_nxterm_vars.hdrvr);
+
+errout_with_hwnd:
+ (void)nxtk_closewindow(g_nxterm_vars.hwnd);
+
+errout_with_nx:
+ /* Disconnect from the server */
+
+ nx_disconnect(g_nxterm_vars.hnx);
+errout:
+ return EXIT_FAILURE;
+}