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
1018 B
C
49 lines
1018 B
C
/*
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* Copyright (c) 2023 Libre Solar Technologies GmbH
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <stdio.h>
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#include <zephyr/devicetree.h>
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#include <zephyr/drivers/gpio.h>
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#include <zephyr/kernel.h>
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#if !DT_NODE_EXISTS(DT_NODELABEL(load_switch))
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#error "Overlay for power output node not properly defined."
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#endif
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static const struct gpio_dt_spec load_switch =
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GPIO_DT_SPEC_GET_OR(DT_NODELABEL(load_switch), gpios, {0});
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int main(void)
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{
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int err;
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if (!gpio_is_ready_dt(&load_switch)) {
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printf("The load switch pin GPIO port is not ready.\n");
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return 0;
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}
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printf("Initializing pin with inactive level.\n");
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err = gpio_pin_configure_dt(&load_switch, GPIO_OUTPUT_INACTIVE);
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if (err != 0) {
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printf("Configuring GPIO pin failed: %d\n", err);
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return 0;
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}
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printf("Waiting one second.\n");
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k_sleep(K_MSEC(1000));
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printf("Setting pin to active level.\n");
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err = gpio_pin_set_dt(&load_switch, 1);
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if (err != 0) {
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printf("Setting GPIO pin level failed: %d\n", err);
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}
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return 0;
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}
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