e18fcbba5a
Now that device_api attribute is unmodified at runtime, as well as all the other attributes, it is possible to switch all device driver instance to be constant. A coccinelle rule is used for this: @r_const_dev_1 disable optional_qualifier @ @@ -struct device * +const struct device * @r_const_dev_2 disable optional_qualifier @ @@ -struct device * const +const struct device * Fixes #27399 Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
49 lines
940 B
C
49 lines
940 B
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 <sys/printk.h>
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#include <drivers/sensor.h>
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/**
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* @file Sample app using the MAX44009 light sensor through ARC I2C.
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*
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* This app will read the sensor reading via I2C interface and show
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* the result every 4 seconds.
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*/
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void main(void)
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{
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const struct device *dev;
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struct sensor_value val;
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uint32_t lum = 0U;
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printk("MAX44009 light sensor application\n");
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dev = device_get_binding("MAX44009");
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if (!dev) {
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printk("sensor: device not found.\n");
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return;
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}
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while (1) {
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if (sensor_sample_fetch_chan(dev, SENSOR_CHAN_LIGHT) != 0) {
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printk("sensor: sample fetch fail.\n");
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return;
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}
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if (sensor_channel_get(dev, SENSOR_CHAN_LIGHT, &val) != 0) {
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printk("sensor: channel get fail.\n");
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return;
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}
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lum = val.val1;
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printk("sensor: lum reading: %d\n", lum);
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k_sleep(K_MSEC(4000));
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}
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}
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