77 lines
2.3 KiB
C
77 lines
2.3 KiB
C
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/****************************************************************************
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* apps/examples/sht3x/sht3x_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 <stdio.h>
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#include <sys/types.h>
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#include <sys/ioctl.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <nuttx/sensors/ioctl.h>
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#include <nuttx/sensors/sht3x.h>
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* sht3x_main
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****************************************************************************/
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int main(int argc, FAR char *argv[])
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{
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FAR struct sht3x_meas_data_s data;
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int fd;
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int ret;
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fd = open("/dev/temp0", O_RDWR);
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if (fd < 0)
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{
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printf("Failed to open /dev/temp0\n");
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return -1;
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}
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ret = ioctl(fd, SNIOC_START, NULL);
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if (ret < 0)
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{
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printf("Error to run ioctl SNIOC_START\n");
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return -1;
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}
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while (1)
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{
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printf("Converting...\n");
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usleep(1000000);
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ret = ioctl(fd, SNIOC_READ_CONVERT_DATA,
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(unsigned long)((uintptr_t)&data));
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printf("Temperature = %f\n", data.temperature);
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printf("Humidity = %f\n", data.humidity);
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}
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return 0;
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}
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