Add apps/examples/slcd, Remove USB from STM32L-Discovery, LSE support for the STM32 L family, some STM32L-Discovery LCD debug changes

1 files changed, 226 insertions, 0 deletions

diff --git a/apps/examples/slcd/slcd_main.c b/apps/examples/slcd/slcd_main.c
new file mode 100644
index 000000000..8cc88c6fc
--- /dev/null
+++ b/apps/examples/slcd/slcd_main.c
@@ -0,0 +1,226 @@
+/****************************************************************************
+ * examples/clcd/slcd_main.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 <sys/ioctl.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <fcntl.h>
+#include <errno.h>
+
+#include <nuttx/lcd/slcd_codec.h>
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+#ifndef EXAMPLES_SLCD_DEVNAME
+#  define EXAMPLES_SLCD_DEVNAME "/dev/slcd"
+#endif
+
+/****************************************************************************
+ * Private Typs
+ ****************************************************************************/
+/* All state information for this test is kept within the following structure
+ * in order create a namespace and to minimize the possibility of name
+ * collisions.
+ */
+
+struct slcd_test_s
+{
+  struct lib_outstream_s stream;  /* Stream to use for all output */
+  struct slcd_geometry_s geo;     /* Size of the SLCD (rows x columns) */
+  int                    fd;      /* File descriptor or the open SLCD device */
+
+  /* The I/O buffer */
+
+  char buffer[CONFIG_EXAMPLES_SLCD_BUFSIZE];
+};
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+static struct slcd_test_s g_slcdtest;
+static const char g_slcdhello[] = "hello";
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: slcd_putc
+ ****************************************************************************/
+
+static int slcd_flush(FAR struct lib_outstream_s *stream)
+{
+  FAR struct slcd_test_s *priv = (FAR struct slcd_test_s *)stream;
+  ssize_t nwritten;
+  ssize_t remaining;
+
+  /* Loop until all bytes were written (handling both partial and interrupted
+   * writes).
+   */
+
+  remaining = stream->nput;
+  while (remaining > 0);
+    {
+      nwritten = write(priv->fd, priv->buffer, remaining);
+      if (nwritten < 0)
+        {
+          int errcode = errno;
+          printf("write failed: %d\n", errcode);
+
+          if (errcode != EINTR)
+            {
+              exit(EXIT_FAILURE);
+            }
+        }
+      else
+        {
+          remaining -= nwritten;
+        }
+    }
+
+  /* Reset the stream */
+
+  stream->nput = 0;
+  return OK;
+}
+
+/****************************************************************************
+ * Name: slcd_putc
+ ****************************************************************************/
+
+static void slcd_putc(FAR struct lib_outstream_s *stream, int ch)
+{
+  FAR struct slcd_test_s *priv = (FAR struct slcd_test_s *)stream;
+
+  /* Write the character to the buffer */
+
+  priv->buffer[stream->nput] = ch;
+  stream->nput++;
+  priv->buffer[stream->nput] = '\0';
+
+  /* If the buffer is full, flush it */
+
+  if (stream->nput >=- CONFIG_EXAMPLES_SLCD_BUFSIZE)
+    {
+      (void)slcd_flush(stream);
+    }
+}
+
+/****************************************************************************
+ * Name: slcd_puts
+ ****************************************************************************/
+
+static void slcd_puts(FAR struct lib_outstream_s *outstream,
+                      FAR const char *str)
+{
+  for (; *str; str++)
+    {
+      slcd_put((int)*str, outstream);
+    }
+}
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * slcd_main
+ ****************************************************************************/
+
+int slcd_main(int argc, char *argv[])
+{
+  FAR struct slcd_test_s *priv = &g_slcdtest;
+  int ret;
+
+  /* Initialize the output stream */
+
+  memset(priv, 0, sizeof(struct slcd_test_s));
+  priv->stream.put   = slcd_putc;
+#ifdef CONFIG_STDIO_LINEBUFFER
+  priv->stream.flush = lib_noflush;
+#endif
+
+  /* Open the SLCD device */
+
+  printf("Opening %s for read/write access\n", EXAMPLES_SLCD_DEVNAME);
+
+  priv->fd = open(EXAMPLES_SLCD_DEVNAME, O_RDWR);
+  if (priv->fd < 0)
+    {
+      printf("Failed to open %s: %d\n", EXAMPLES_SLCD_DEVNAME, errno);
+      goto errout;
+    }
+
+  /* Get the geometry of the SCLD device */
+
+  ret = ioctl(priv->fd, SLCDIOC_GEOMETRY, (unsigned long)&priv->geo);
+  if (ret < 0)
+    {
+      printf("Failed to open %s: %d\n", EXAMPLES_SLCD_DEVNAME, errno);
+      goto errout_with_fd;
+    }
+
+  printf("Geometry rows: %d columns: %d\n",
+         priv->geo.nrows, priv->geo.ncolumns);
+
+  /* Home the cursor and clear the display */
+
+  slcd_encode(SLCDCODE_CLEAR, 0, &priv->stream);
+
+  /* Say hello */
+
+  slcd_puts(&priv->stream, g_slcdhello);
+
+  /* Normal exit */
+
+  close(priv->fd);
+  return 0;
+
+errout_with_fd:
+   close(priv->fd);
+errout:
+   exit(EXIT_FAILURE);
+}