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/*
* Copyright (c) 2016 Intel Corporation.
*
* 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 <device.h>
#include <sensor.h>
#include <stdio.h>
#ifdef CONFIG_MCP9808_TRIGGER
static void trigger_handler(struct device *dev, struct sensor_trigger *trig)
{
struct sensor_value temp;
sensor_sample_fetch(dev);
sensor_channel_get(dev, SENSOR_CHAN_TEMP, &temp);
printf("trigger fired, temp %d.%06d\n", temp.val1, temp.val2);
}
#endif
void main(void)
{
struct device *dev = device_get_binding("MCP9808");
if (dev == NULL) {
printf("device not found. aborting test.\n");
return;
}
#ifdef DEBUG
printf("dev %p\n", dev);
printf("dev %p name %s\n", dev, dev->config->name);
#endif
#ifdef CONFIG_MCP9808_TRIGGER
struct sensor_value val;
struct sensor_trigger trig;
val.type = SENSOR_VALUE_TYPE_INT_PLUS_MICRO;
val.val1 = 26;
val.val2 = 0;
sensor_attr_set(dev, SENSOR_CHAN_TEMP,
SENSOR_ATTR_UPPER_THRESH, &val);
trig.type = SENSOR_TRIG_THRESHOLD;
trig.chan = SENSOR_CHAN_TEMP;
sensor_trigger_set(dev, &trig, trigger_handler);
#endif
while (1) {
struct sensor_value temp;
int rc;
rc = sensor_sample_fetch(dev);
if (rc != 0) {
printf("sensor_sample_fetch error: %d\n", rc);
break;
}
rc = sensor_channel_get(dev, SENSOR_CHAN_TEMP, &temp);
if (rc != 0) {
printf("sensor_channel_get error: %d\n", rc);
break;
}
printf("temp: %d.%06d\n", temp.val1, temp.val2);
k_sleep(2000);
}
}
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