a29d9ea9da
to get the prototypes or macros are defined in it Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
116 lines
3.2 KiB
C
116 lines
3.2 KiB
C
/****************************************************************************
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* apps/examples/isl29023/isl29023_main.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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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 <nuttx/sensors/isl29023.h>
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#include <sys/ioctl.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <unistd.h>
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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#define DEV_PATH "/dev/als0"
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* isl29023_main
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****************************************************************************/
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int main(int argc, FAR char *argv[])
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{
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struct isl29023_data_s data;
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int fd;
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int ret;
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fd = open(DEV_PATH, O_RDONLY);
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if (fd < 0)
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{
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printf("Failed to open device driver at '%s'\n", DEV_PATH);
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}
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/* Set continuous ALS mode */
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ret = ioctl(fd, SNIOC_SET_OPERATIONAL_MODE,
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ISL29023_OP_MODE_ALS_CONTINUES);
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if (ret < 0)
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{
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printf("Failed to set isl29023 mode: %d\n", errno);
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goto out;
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}
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/* Set max resolution (16 bits) */
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ret = ioctl(fd, SNIOC_SET_RESOLUTION, ISL29023_RESOLUTION_16BITS);
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if (ret < 0)
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{
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printf("Failed to set isl29023 resolution: %d\n", errno);
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goto out;
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}
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/* Set max range (64000) */
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ret = ioctl(fd, SNIOC_SET_RANGE, ISL29023_ALS_RANGE_64000);
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if (ret < 0)
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{
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printf("Failed to set isl29023 range: %d\n", errno);
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goto out;
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}
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/* Wait for the initial conversion to complete.
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* 90 ms (typ) for 16-bit conversion on isl29023,
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* 105 ms for 16-bit conversion on isl29035 (compatible),
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* so going for 110 ms.
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*/
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usleep(110000);
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/* Read both lux and raw values */
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ret = read(fd, &data, sizeof(data));
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if (ret < 0)
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{
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printf("FAILED to read lux and raw values from isl29023: %d\n", errno);
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goto out;
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}
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printf("lux: %d\n"
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"raw: %d\n", data.lux, data.raw);
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ret = 0;
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out:
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close(fd);
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return ret;
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}
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