75 lines
1.4 KiB
C
75 lines
1.4 KiB
C
/*
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* Copyright (c) 2016 Intel Corporation.
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <zephyr.h>
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#include <device.h>
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#include <sensor.h>
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#include <stdio.h>
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#ifdef CONFIG_MCP9808_TRIGGER
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static void trigger_handler(struct device *dev, struct sensor_trigger *trig)
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{
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struct sensor_value temp;
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sensor_sample_fetch(dev);
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sensor_channel_get(dev, SENSOR_CHAN_AMBIENT_TEMP, &temp);
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printf("trigger fired, temp %d.%06d\n", temp.val1, temp.val2);
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}
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#endif
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void main(void)
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{
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struct device *dev = device_get_binding("MCP9808");
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if (dev == NULL) {
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printf("device not found. aborting test.\n");
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return;
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}
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#ifdef DEBUG
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printf("dev %p\n", dev);
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printf("dev %p name %s\n", dev, dev->config->name);
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#endif
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#ifdef CONFIG_MCP9808_TRIGGER
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struct sensor_value val;
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struct sensor_trigger trig;
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val.val1 = 26;
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val.val2 = 0;
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sensor_attr_set(dev, SENSOR_CHAN_AMBIENT_TEMP,
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SENSOR_ATTR_UPPER_THRESH, &val);
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trig.type = SENSOR_TRIG_THRESHOLD;
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trig.chan = SENSOR_CHAN_AMBIENT_TEMP;
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sensor_trigger_set(dev, &trig, trigger_handler);
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#endif
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while (1) {
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struct sensor_value temp;
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int rc;
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rc = sensor_sample_fetch(dev);
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if (rc != 0) {
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printf("sensor_sample_fetch error: %d\n", rc);
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break;
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}
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rc = sensor_channel_get(dev, SENSOR_CHAN_AMBIENT_TEMP, &temp);
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if (rc != 0) {
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printf("sensor_channel_get error: %d\n", rc);
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break;
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}
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printf("temp: %d.%06d\n", temp.val1, temp.val2);
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k_sleep(2000);
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}
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}
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