zephyr/samples/sensor/ens210/src/main.c
Tomasz Bursztyka e18fcbba5a device: Const-ify all device driver instance pointers
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>
2020-09-02 13:48:13 +02:00

36 lines
789 B
C

/*
* Copyright (c) 2018 Alexander Wachter
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <zephyr.h>
#include <device.h>
#include <drivers/sensor.h>
#include <sys/printk.h>
void main(void)
{
const struct device *dev;
struct sensor_value temperature, humidity;
dev = device_get_binding(DT_LABEL(DT_INST(0, ams_ens210)));
if (!dev) {
printk("Failed to get device binding");
return;
}
printk("device is %p, name is %s\n", dev, dev->name);
while (1) {
sensor_sample_fetch(dev);
sensor_channel_get(dev, SENSOR_CHAN_HUMIDITY, &humidity);
sensor_channel_get(dev, SENSOR_CHAN_AMBIENT_TEMP, &temperature);
printk("Temperature: %d.%06d C; Humidity: %d.%06d%%\n",
temperature.val1, temperature.val2,
humidity.val1, humidity.val2);
k_sleep(K_MSEC(1000));
}
}