forked from Archive/PX4-Autopilot
93 lines
2.7 KiB
C
93 lines
2.7 KiB
C
/****************************************************************************
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*
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* Copyright (C) 2012 PX4 Development Team. All rights reserved.
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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 PX4 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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* @file test_adc.c
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* Test for the analog to digital converter.
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*/
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#include <nuttx/config.h>
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#include <nuttx/arch.h>
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#include <sys/types.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <debug.h>
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#include <nuttx/spi.h>
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#include "tests.h"
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#include <nuttx/analog/adc.h>
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#include <drivers/drv_adc.h>
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#include <systemlib/err.h>
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int test_adc(int argc, char *argv[])
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{
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int fd = open(ADC_DEVICE_PATH, O_RDONLY);
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if (fd < 0)
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err(1, "can't open ADC device");
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for (unsigned i = 0; i < 5; i++) {
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/* make space for a maximum of eight channels */
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struct adc_msg_s data[8];
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/* read all channels available */
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ssize_t count = read(fd, data, sizeof(data));
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if (count < 0)
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goto errout_with_dev;
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unsigned channels = count / sizeof(data[0]);
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for (unsigned j = 0; j < channels; j++) {
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printf("%d: %u ", data[j].am_channel, data[j].am_data);
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}
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printf("\n");
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usleep(150000);
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}
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message("\t ADC test successful.\n");
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errout_with_dev:
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if (fd != 0) close(fd);
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return OK;
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}
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