documentation/api/adc_test_2artik_adc_test_8c-example.html

/*
 *
 * Copyright 2017 Samsung Electronics All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
 * either express or implied. See the License for the specific
 * language governing permissions and limitations under the License.
 *
 */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <artik_module.h>
#include <artik_adc.h>
static artik_adc_config config = { 0, "adc", NULL };
artik_error adc_test_value(void)
{
    artik_adc_handle handle;
    artik_error ret = S_OK;
    artik_adc_module *adc = (artik_adc_module *)
                    artik_request_api_module("adc");
    int val = -1;
    int i = 0;
    fprintf(stdout, "TEST: %s\n", __func__);
    if (adc == INVALID_MODULE) {
        fprintf(stderr, "TEST: %s - Failed to request module\n",
                                __func__);
        return E_NOT_SUPPORTED;
    }
    ret = adc->request(&handle, &config);
    if (ret != S_OK) {
        fprintf(stderr, "TEST: %s - Failed to request adc (err=%d)\n",
                            __func__, ret);
        goto exit;
    }
    for (i = 0; i < 5; i++) {
        ret = adc->get_value(handle, &val);
        if (ret != S_OK) {
            fprintf(stderr, "TEST: %s - Failed to get adc\n"
                "value (err=%d)\n", __func__, ret);
            goto exit;
        }
        fprintf(stdout, "TEST: %s - Value = %d\n", __func__, val);
        usleep(1000*1000);
    }
    adc->release(handle);
exit:
    fprintf(stdout, "TEST: %s %s\n", __func__, (ret == S_OK) ? "succeeded" :
                                "failed");
    ret = artik_release_api_module(adc);
    if (ret != S_OK) {
        fprintf(stderr, "TEST: %s - Failed to release module\n",
            __func__);
        return ret;
    }
    return S_OK;
}
int main(void)
{
    artik_error ret = S_OK;
    ret = adc_test_value();
    return (ret == S_OK) ? 0 : -1;
}