samples/subsys/usb/console/src/main.c

/*
 * Copyright (c) 2016 Intel Corporation.
 *
 * SPDX-License-Identifier: Apache-2.0
 */

#include <zephyr/zephyr.h>
#include <zephyr/sys/printk.h>
#include <zephyr/usb/usb_device.h>
#include <zephyr/drivers/uart.h>

BUILD_ASSERT(DT_NODE_HAS_COMPAT(DT_CHOSEN(zephyr_console), zephyr_cdc_acm_uart),
	     "Console device is not ACM CDC UART device");

void main(void)
{
	const struct device *dev = DEVICE_DT_GET(DT_CHOSEN(zephyr_console));
	uint32_t dtr = 0;

	if (usb_enable(NULL)) {
		return;
	}

	/* Poll if the DTR flag was set */
	while (!dtr) {
		uart_line_ctrl_get(dev, UART_LINE_CTRL_DTR, &dtr);
		/* Give CPU resources to low priority threads. */
		k_sleep(K_MSEC(100));
	}

	while (1) {
		printk("Hello World! %s\n", CONFIG_ARCH);
		k_sleep(K_SECONDS(1));
	}
}