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Diffstat (limited to 'apps/examples/keypadtest/keypadtest_main.c')
-rw-r--r-- | apps/examples/keypadtest/keypadtest_main.c | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/apps/examples/keypadtest/keypadtest_main.c b/apps/examples/keypadtest/keypadtest_main.c new file mode 100644 index 000000000..afdc3e08a --- /dev/null +++ b/apps/examples/keypadtest/keypadtest_main.c @@ -0,0 +1,138 @@ +/**************************************************************************** + * examples/keypadtest/keypadtest_main.c + * + * Copyright (C) 2011 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 Gregory Nutt 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 <sys/stat.h> + +#include <stdio.h> +#include <unistd.h> +#include <fcntl.h> +#include <sched.h> +#include <errno.h> + +#include <nuttx/input/keypad.h> + +/**************************************************************************** + * Definitions + ****************************************************************************/ +/* Configuration ************************************************************/ + +/* Sanity checking */ + +/* Provide some default values for other configuration settings */ + +#ifndef CONFIG_EXAMPLES_KEYPAD_DEVNAME +# define CONFIG_EXAMPLES_KEYPAD_DEVNAME "/dev/keypad" +#endif + +/**************************************************************************** + * Private Types + ****************************************************************************/ + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: keypadtest_main + ****************************************************************************/ + +int keypadtest_main(int argc, char *argv[]) +{ + char buffer[256]; + ssize_t nbytes; + int fd; + int ret; + + /* First, register the keyboard device(s) */ + + printf("keypadtest_main: Register keyboard device\n"); + ret = keypad_kbdinit(); + if (ret != OK) + { + printf("keypadtest_main: Failed to register the KBD class\n"); + fflush(stdout); + return 1; + } + + /* Open the configured keyboard device. */ + + printf("keypadtest_main: Opening device %s\n", CONFIG_EXAMPLES_KEYPAD_DEVNAME); + fd = open(CONFIG_EXAMPLES_KEYPAD_DEVNAME, O_RDONLY); + if (fd < 0) + { + printf("keypadtest_main: open() failed: %d\n", errno); + fflush(stdout); + return 1; + } + + printf("keypadtest_main: Device %s opened\n", CONFIG_EXAMPLES_KEYPAD_DEVNAME); + fflush(stdout); + + /* Loop until there is a read failure */ + + do + { + /* Read a buffer of data */ + + nbytes = read(fd, buffer, 256); + if (nbytes > 0) + { + /* On success, echo the buffer to stdout */ + + (void)write(1, buffer, nbytes); + } + } + while (nbytes >= 0); + + printf("keypadtest_main: Closing device %s: %d\n", CONFIG_EXAMPLES_KEYPAD_DEVNAME, (int)nbytes); + fflush(stdout); + close(fd); + return 0; +} |