zephyr/samples/sensor/max30101/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

31 lines
544 B
C

/*
* Copyright (c) 2017, NXP
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <zephyr.h>
#include <drivers/sensor.h>
#include <stdio.h>
void main(void)
{
struct sensor_value green;
const struct device *dev = device_get_binding(DT_LABEL(DT_INST(0, max_max30101)));
if (dev == NULL) {
printf("Could not get max30101 device\n");
return;
}
while (1) {
sensor_sample_fetch(dev);
sensor_channel_get(dev, SENSOR_CHAN_GREEN, &green);
/* Print green LED data*/
printf("GREEN=%d\n", green.val1);
k_sleep(K_MSEC(20));
}
}