0b90fd5adf
As both C and C++ standards require applications running under an OS to
return 'int', adapt that for Zephyr to align with those standard. This also
eliminates errors when building with clang when not using -ffreestanding,
and reduces the need for compiler flags to silence warnings for both clang
and gcc.
Most of these changes were automated using coccinelle with the following
script:
@@
@@
- void
+ int
main(...) {
...
- return;
+ return 0;
...
}
Approximately 40 files had to be edited by hand as coccinelle was unable to
fix them.
Signed-off-by: Keith Packard <keithp@keithp.com>
41 lines
717 B
C
41 lines
717 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/kernel.h>
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#include <zephyr/init.h>
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#include <stdio.h>
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#include <zephyr/drivers/sensor.h>
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#define SLEEP_TIME K_MSEC(1000)
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int main(void)
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{
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const struct device *const dev = DEVICE_DT_GET_ONE(seeed_grove_light);
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if (!device_is_ready(dev)) {
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printk("sensor: device not ready.\n");
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return 0;
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}
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while (1) {
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int read;
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struct sensor_value lux;
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read = sensor_sample_fetch(dev);
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if (read) {
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printf("sample fetch error %d\n", read);
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continue;
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}
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sensor_channel_get(dev, SENSOR_CHAN_LIGHT, &lux);
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printf("lux: %f\n", sensor_value_to_double(&lux));
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k_sleep(SLEEP_TIME);
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}
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return 0;
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}
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