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/*
* Copyright (c) 2016 ARM Ltd.
*
* 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 <zephyr.h>
#include <sensor.h>
#include <stdio.h>
static double convert_to_double(struct sensor_value *v)
{
switch (v->type) {
case SENSOR_VALUE_TYPE_INT_PLUS_MICRO:
return v->val1 + ((double)v->val2 / 1000000);
case SENSOR_VALUE_TYPE_DOUBLE:
return v->dval;
}
return 0;
}
void main(void)
{
struct device *temp_dev;
printf("Thermometer Example! %s\n", CONFIG_ARCH);
temp_dev = device_get_binding("TEMP_0");
if (!temp_dev) {
printf("error: no temp device\n");
return;
}
printf("temp device is %p, name is %s\n",
temp_dev, temp_dev->config->name);
while (1) {
int r;
struct sensor_value temp_value;
r = sensor_sample_fetch(temp_dev);
if (r) {
printf("sensor_sample_fetch failed return: %d\n", r);
break;
}
r = sensor_channel_get(temp_dev, SENSOR_CHAN_TEMP,
&temp_value);
if (r) {
printf("sensor_channel_get failed return: %d\n", r);
break;
}
printf("Temperature is %gC\n", convert_to_double(&temp_value));
k_sleep(1000);
}
}
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