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138 lines
4.6 KiB
138 lines
4.6 KiB
/**************************************************************************** |
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* examples/keypadtest/keypadtest_main.c |
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* |
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* Copyright (C) 2011 Gregory Nutt. All rights reserved. |
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* Author: Gregory Nutt <gnutt@nuttx.org> |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in |
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* the documentation and/or other materials provided with the |
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* distribution. |
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* 3. Neither the name Gregory Nutt nor the names of its contributors may be |
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* used to endorse or promote products derived from this software |
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* without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS |
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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* POSSIBILITY OF SUCH DAMAGE. |
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* |
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****************************************************************************/ |
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/**************************************************************************** |
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* Included Files |
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****************************************************************************/ |
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#include <nuttx/config.h> |
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#include <sys/types.h> |
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#include <sys/stat.h> |
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#include <stdio.h> |
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#include <unistd.h> |
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#include <fcntl.h> |
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#include <sched.h> |
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#include <errno.h> |
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#include <nuttx/input/keypad.h> |
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/**************************************************************************** |
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* Definitions |
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****************************************************************************/ |
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/* Configuration ************************************************************/ |
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/* Sanity checking */ |
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/* Provide some default values for other configuration settings */ |
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#ifndef CONFIG_EXAMPLES_KEYPAD_DEVNAME |
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# define CONFIG_EXAMPLES_KEYPAD_DEVNAME "/dev/keypad" |
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#endif |
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/**************************************************************************** |
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* Private Types |
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****************************************************************************/ |
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/**************************************************************************** |
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* Private Data |
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****************************************************************************/ |
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/**************************************************************************** |
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* Private Functions |
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****************************************************************************/ |
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/**************************************************************************** |
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* Public Functions |
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****************************************************************************/ |
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/**************************************************************************** |
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* Name: keypadtest_main |
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****************************************************************************/ |
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int keypadtest_main(int argc, char *argv[]) |
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{ |
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char buffer[256]; |
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ssize_t nbytes; |
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int fd; |
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int ret; |
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/* First, register the keyboard device(s) */ |
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printf("keypadtest_main: Register keyboard device\n"); |
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ret = keypad_kbdinit(); |
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if (ret != OK) |
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{ |
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printf("keypadtest_main: Failed to register the KBD class\n"); |
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fflush(stdout); |
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return 1; |
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} |
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/* Open the configured keyboard device. */ |
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printf("keypadtest_main: Opening device %s\n", CONFIG_EXAMPLES_KEYPAD_DEVNAME); |
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fd = open(CONFIG_EXAMPLES_KEYPAD_DEVNAME, O_RDONLY); |
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if (fd < 0) |
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{ |
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printf("keypadtest_main: open() failed: %d\n", errno); |
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fflush(stdout); |
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return 1; |
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} |
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printf("keypadtest_main: Device %s opened\n", CONFIG_EXAMPLES_KEYPAD_DEVNAME); |
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fflush(stdout); |
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/* Loop until there is a read failure */ |
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do |
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{ |
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/* Read a buffer of data */ |
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nbytes = read(fd, buffer, 256); |
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if (nbytes > 0) |
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{ |
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/* On success, echo the buffer to stdout */ |
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(void)write(1, buffer, nbytes); |
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} |
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} |
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while (nbytes >= 0); |
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printf("keypadtest_main: Closing device %s: %d\n", CONFIG_EXAMPLES_KEYPAD_DEVNAME, (int)nbytes); |
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fflush(stdout); |
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close(fd); |
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return 0; |
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}
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