From d890cd67c3ef9e702a71bb5ed2f8a5e9e6d4cfac Mon Sep 17 00:00:00 2001 From: Gregory Nutt Date: Fri, 24 May 2013 10:00:54 -0600 Subject: Add apps/examples/slcd, Remove USB from STM32L-Discovery, LSE support for the STM32 L family, some STM32L-Discovery LCD debug changes --- apps/examples/slcd/slcd_main.c | 226 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 226 insertions(+) create mode 100644 apps/examples/slcd/slcd_main.c (limited to 'apps/examples/slcd/slcd_main.c') 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 + * + * 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 + +#include + +#include +#include +#include +#include +#include + +#include + +/**************************************************************************** + * 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); +} -- cgit v1.2.3