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samples: net: lwm2m: add support for hl7800 modem

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Add an overlay for hl7800 modem configuration.
Adjust the client to wait until the network is ready before
trying to connect to the lwm2m server.

Signed-off-by: Ryan Erickson <ryan.erickson@ezurio.com>
This commit is contained in:
Ryan Erickson 2025-01-09 11:48:36 -06:00 committed by Benjamin Cabé
parent 78943ddd6e
commit 1674114fd2
3 changed files with 34 additions and 0 deletions
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7
samples/net/lwm2m_client/Kconfig
View file

@ -41,4 +41,11 @@ config LWM2M_APP_SERVER
When port number is missing, CONFIG_LWM2M_PEER_PORT is used instead.
IPv6 addresses must be enclosed in square brackets, for example "coap://[fd00::1]".
config WAIT_DNS_SERVER_ADDITION
bool "Wait DNS server addition before considering connection to be up"
depends on MODEM_HL7800 && !DNS_SERVER_IP_ADDRESSES
help
Make sure we get DNS server addresses from the network
before considering the connection to be up.
source "Kconfig.zephyr"

18
samples/net/lwm2m_client/overlay-hl7800.conf Normal file
View file

@ -0,0 +1,18 @@
# Ensure your board has proper device tree configuration for the HL7800 modem
CONFIG_MODEM=y
CONFIG_MODEM_HL7800=y
# The HL7800 driver gets its IP settings from the cell network
CONFIG_NET_CONFIG_SETTINGS=n
CONFIG_NET_CONNECTION_MANAGER=y
CONFIG_WAIT_DNS_SERVER_ADDITION=y
CONFIG_DNS_RESOLVER=y
# NB-IoT has large latency, so increase timeouts. It is ok to use this for Cat-M1 as well.
CONFIG_NET_SOCKETS_DNS_TIMEOUT=12000
CONFIG_NET_SOCKETS_CONNECT_TIMEOUT=13000
CONFIG_NET_SOCKETS_DTLS_TIMEOUT=15000
CONFIG_COAP_INIT_ACK_TIMEOUT_MS=15000
# Debug options
# CONFIG_MODEM_LOG_LEVEL_DBG=y

9
samples/net/lwm2m_client/src/lwm2m-client.c
View file

@ -33,7 +33,11 @@ LOG_MODULE_REGISTER(LOG_MODULE_NAME);
#define TEMP_SENSOR_UNITS "Celcius"
/* Macros used to subscribe to specific Zephyr NET management events. */
#if defined(CONFIG_WAIT_DNS_SERVER_ADDITION)
#define L4_EVENT_MASK (NET_EVENT_DNS_SERVER_ADD | NET_EVENT_L4_DISCONNECTED)
#else
#define L4_EVENT_MASK (NET_EVENT_L4_CONNECTED | NET_EVENT_L4_DISCONNECTED)
#endif
#define CONN_LAYER_EVENT_MASK (NET_EVENT_CONN_IF_FATAL_ERROR)
static uint8_t bat_idx = LWM2M_DEVICE_PWR_SRC_TYPE_BAT_INT;
@ -334,7 +338,11 @@ static void l4_event_handler(struct net_mgmt_event_callback *cb,
struct net_if *iface)
{
switch (event) {
#if defined(CONFIG_WAIT_DNS_SERVER_ADDITION)
case NET_EVENT_DNS_SERVER_ADD:
#else
case NET_EVENT_L4_CONNECTED:
#endif
LOG_INF("IP Up");
on_net_event_l4_connected();
break;
@ -386,6 +394,7 @@ int main(void)
(void)conn_mgr_if_connect(net_if_get_default());
LOG_INF("Waiting for network connection...");
k_sem_take(&network_connected_sem, K_FOREVER);
}