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>
52 lines
1.0 KiB
C
52 lines
1.0 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 <devicetree.h>
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#include <drivers/gpio.h>
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/* 1000 msec = 1 sec */
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#define SLEEP_TIME_MS 1000
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/* The devicetree node identifier for the "led0" alias. */
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#define LED0_NODE DT_ALIAS(led0)
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#if DT_NODE_HAS_STATUS(LED0_NODE, okay)
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#define LED0 DT_GPIO_LABEL(LED0_NODE, gpios)
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#define PIN DT_GPIO_PIN(LED0_NODE, gpios)
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#define FLAGS DT_GPIO_FLAGS(LED0_NODE, gpios)
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#else
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/* A build error here means your board isn't set up to blink an LED. */
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#error "Unsupported board: led0 devicetree alias is not defined"
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#define LED0 ""
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#define PIN 0
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#define FLAGS 0
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#endif
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void main(void)
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{
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const struct device *dev;
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bool led_is_on = true;
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int ret;
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dev = device_get_binding(LED0);
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if (dev == NULL) {
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return;
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}
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ret = gpio_pin_configure(dev, PIN, GPIO_OUTPUT_ACTIVE | FLAGS);
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if (ret < 0) {
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return;
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}
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while (1) {
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gpio_pin_set(dev, PIN, (int)led_is_on);
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led_is_on = !led_is_on;
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k_msleep(SLEEP_TIME_MS);
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}
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}
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