samples/net/gsm_modem/src/main.c

/*
 * Copyright (c) 2020, Intel Corporation
 *
 * SPDX-License-Identifier: Apache-2.0
 */

#include <zephyr.h>
#include <sys/printk.h>
#include <drivers/uart.h>
#include <net/net_mgmt.h>
#include <net/net_event.h>
#include <net/net_conn_mgr.h>

#include <logging/log.h>
LOG_MODULE_REGISTER(sample_gsm_ppp, LOG_LEVEL_DBG);

static struct net_mgmt_event_callback mgmt_cb;

static void event_handler(struct net_mgmt_event_callback *cb,
			  uint32_t mgmt_event, struct net_if *iface)
{
	if ((mgmt_event & (NET_EVENT_L4_CONNECTED
			   | NET_EVENT_L4_DISCONNECTED)) != mgmt_event) {
		return;
	}

	if (mgmt_event == NET_EVENT_L4_CONNECTED) {
		LOG_INF("Network connected");
		return;
	}

	if (mgmt_event == NET_EVENT_L4_DISCONNECTED) {
		LOG_INF("Network disconnected");
		return;
	}
}

int main(void)
{
	const struct device *uart_dev = device_get_binding(CONFIG_MODEM_GSM_UART_NAME);

	LOG_INF("%s: booted board '%s' APN '%s' UART '%s' device %p",
		__func__, CONFIG_BOARD, CONFIG_MODEM_GSM_APN,
		CONFIG_MODEM_GSM_UART_NAME, uart_dev);

	net_mgmt_init_event_callback(&mgmt_cb, event_handler,
				     NET_EVENT_L4_CONNECTED |
				     NET_EVENT_L4_DISCONNECTED);
	net_mgmt_add_event_callback(&mgmt_cb);

	return 0;
}