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>
49 lines
1005 B
C
49 lines
1005 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/sys/printk.h>
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#include <zephyr/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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int main(void)
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{
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const struct device *const dev = DEVICE_DT_GET_ONE(maxim_max44009);
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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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if (!device_is_ready(dev)) {
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printk("Device %s is not ready\n", dev->name);
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return 0;
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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 0;
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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 0;
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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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return 0;
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}
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