64 lines
2.2 KiB
C
64 lines
2.2 KiB
C
/****************************************************************************
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* apps/examples/bmp280/bmp280_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 <fcntl.h>
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#include <unistd.h>
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#include <nuttx/sensors/sensor.h>
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* bmp280_main
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****************************************************************************/
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int main(int argc, FAR char *argv[])
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{
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int fd;
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int ret;
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struct sensor_baro sensor_data;
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fd = open("/dev/uorb/sensor_baro0", O_RDONLY | O_NONBLOCK);
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if (fd < 0)
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{
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printf("Failed to open BMP280 sensor");
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return EXIT_FAILURE;
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}
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ret = read(fd, &sensor_data, sizeof(sensor_data));
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if (ret != sizeof(sensor_data))
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{
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perror("Could not read");
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return EXIT_FAILURE;
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}
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printf("Absolute pressure [hPa] = %f\n", sensor_data.pressure);
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printf("Temperature [C] = %f\n", sensor_data.temperature);
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return EXIT_SUCCESS;
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}
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