Resync new repository with old repo r5166

git-svn-id: http://svn.code.sf.net/p/nuttx/code/trunk@5153 42af7a65-404d-4744-a932-0658087f49c3
2026-10-25 07:33:34 +08:00 · 2012-09-17 18:18:44 +00:00
commit 57623d42eb
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+/****************************************************************************
+ * drivers/serial/lowconsole.c
+ *
+ *   Copyright (C) 2008-2009, 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 <errno.h>
+#include <debug.h>
+
+#include <nuttx/arch.h>
+#include <nuttx/fs/fs.h>
+
+/****************************************************************************
+ * Definitions
+ ****************************************************************************/
+
+/* The architecture must provide up_putc for this driver */
+
+#ifndef CONFIG_ARCH_LOWPUTC
+#  error "Architecture must provide up_putc() for this driver"
+#endif
+
+/****************************************************************************
+ * Private Function Prototypes
+ ****************************************************************************/
+
+static ssize_t lowconsole_read(struct file *filep, char *buffer, size_t buflen);
+static ssize_t lowconsole_write(struct file *filep, const char *buffer, size_t buflen);
+static int     lowconsole_ioctl(struct file *filep, int cmd, unsigned long arg);
+
+/****************************************************************************
+ * Private Variables
+ ****************************************************************************/
+
+static const struct file_operations g_consoleops =
+{
+  0,                /* open */
+  0,                /* close */
+  lowconsole_read,  /* read */
+  lowconsole_write, /* write */
+  0,                /* seek */
+  lowconsole_ioctl  /* ioctl */
+#ifndef CONFIG_DISABLE_POLL
+  , 0               /* poll */
+#endif
+};
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: lowconsole_ioctl
+ ****************************************************************************/
+
+static int lowconsole_ioctl(struct file *filep, int cmd, unsigned long arg)
+{
+  return -ENOTTY;
+}
+
+/****************************************************************************
+ * Name: lowconsole_read
+ ****************************************************************************/
+
+static ssize_t lowconsole_read(struct file *filep, char *buffer, size_t buflen)
+{
+  return 0;
+}
+
+/****************************************************************************
+ * Name: lowconsole_write
+ ****************************************************************************/
+
+static ssize_t lowconsole_write(struct file *filep, const char *buffer, size_t buflen)
+{
+  ssize_t ret = buflen;
+ 
+  for (; buflen; buflen--)
+    {
+      up_putc(*buffer++);
+    }
+  return ret;
+}
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: lowconsole_init
+****************************************************************************/
+
+void lowconsole_init(void)
+{
+  (void)register_driver("/dev/console", &g_consoleops, 0666, NULL);
+}