121 lines
3.7 KiB
C
121 lines
3.7 KiB
C
/****************************************************************************
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* examples/apds9960/apds9960_main.c
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*
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* Copyright (C) 2017 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 NuttX 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 <stdio.h>
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#include <stdlib.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <nuttx/sensors/apds9960.h>
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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#ifndef CONFIG_EXAMPLES_APDS9960_DEVNAME
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# define CONFIG_EXAMPLES_APDS9960_DEVNAME "/dev/gest0"
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#endif
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* apds9960_main
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****************************************************************************/
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#ifdef CONFIG_BUILD_KERNEL
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int main(int argc, FAR char *argv[])
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#else
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int apds9960_main(int argc, char *argv[])
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#endif
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{
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int fd;
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int nbytes;
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char gest;
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fd = open(CONFIG_EXAMPLES_APDS9960_DEVNAME, O_RDONLY|O_NONBLOCK);
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if (fd < 0)
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{
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int errcode = errno;
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printf("ERROR: Failed to open %s: %d\n",
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CONFIG_EXAMPLES_APDS9960_DEVNAME, errcode);
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goto errout;
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}
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while (1)
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{
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nbytes = read(fd, (void *)&gest, sizeof(gest));
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if (nbytes == 1)
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{
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switch (gest)
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{
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case DIR_LEFT:
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printf("LEFT\n");
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break;
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case DIR_RIGHT:
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printf("RIGHT\n");
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break;
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case DIR_UP:
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printf("UP\n");
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break;
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case DIR_DOWN:
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printf("DOWN\n");
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break;
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}
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}
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fflush(stdout);
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/* Wait 10ms */
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usleep(10000);
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}
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return 0;
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errout:
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return EXIT_FAILURE;
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}
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