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examples/nanocoap_server: enable DHCP and example doc update

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This commit is contained in:
krzysztof-cabaj 2025-03-28 10:21:27 +01:00
parent 5f08f5e0b2
commit 5e2bfeb9cf
3 changed files with 34 additions and 20 deletions
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4
examples/networking/coap/nanocoap_server/Makefile
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@ -27,6 +27,10 @@ else
USEMODULE += lwip_arp
USEMODULE += lwip_ipv4
USEMODULE += netdev_legacy_api
# If this module will be disabled, example set IPv4 192.168.100.150 address.
USEMODULE += lwip_dhcp_auto
CFLAGS += -DETHARP_SUPPORT_STATIC_ENTRIES=1
USEMODULE += random

40
examples/networking/coap/nanocoap_server/README.md
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@ -2,7 +2,7 @@ nanocoap server example
=======================
This application is meant to get you started with implementing a CoAP server on RIOT.
It uses the GNRC network stack through RIOT's
It uses the GNRC or LWIP (including IPv4) network stack through RIOT's
[sock API](http://doc.riot-os.org/group__net__sock.html).
Usage
@ -31,34 +31,36 @@ The application is now listening on all it's configured IP addresses.
Now find out its link\_layer address:
```
$ make term
/home/aabadie/riot/examples/nanocoap_server/bin/native/nanocoapcoap_server.elf tap0
RIOT native interrupts/signals initialized.
LED_GREEN_OFF
LED_RED_ON
RIOT native board initialized.
RIOT native hardware initialization complete.
main(): This is RIOT! (Version: 2015.12-devel-632-g8f451-booze-master)
main(): This is RIOT! (Version: 2024.04-devel-2305-g5f08f5-examples-nanocoap-lwip)
RIOT nanocoap example application
Waiting for address autoconfiguration...
Configured network interfaces:
Iface 5 HWaddr: 96:3c:18:1e:26:f7
MTU:1500 HL:64 RTR RTR_ADV
Source address length: 6
Link type: wired
inet6 addr: ff02::1/128 scope: local [multicast]
inet6 addr: fe80::e42a:1aff:feca:10ec/64 scope: local
inet6 addr: ff02::1:ffca:10ec/128 scope: local [multicast]
inet6 addr: ff02::2/128 scope: local [multicast]
inet6 addr: 2001:db8:1:0:e42a:1aff:feca:10ec/64 scope: global
{"IPv6 addresses": ["fe80::8c9d:7dff:fea1:fdcd"]}
```
The link-layer address in this case is "fe80::e42a:1aff:feca:10ec", the only
"scope: local" address set.
The link-layer address in this case is "fe80::8c9d:7dff:fea1:fdcd".
Usage - IPv4
============
Enable LWIP IPv4 setting `LWIP_IPV4 ?= 1` in `Makefile`.
Run program and set IPv4 will be presented in the output:
```
RIOT native interrupts/signals initialized.
RIOT native board initialized.
RIOT native hardware initialization complete.
main(): This is RIOT! (Version: 2024.04-devel-2305-g5f08f5-examples-nanocoap-lwip)
RIOT nanocoap example application
Waiting for address autoconfiguration...
{"IPv4 addresses": ["192.168.100.150"]}
```
Testing
=======

10
examples/networking/coap/nanocoap_server/main.c
View File

@ -24,6 +24,7 @@
#ifdef MODULE_LWIP_IPV4
#include "lwip/netif.h"
#include <arpa/inet.h>
#endif
#define COAP_INBUF_SIZE (256U)
@ -53,13 +54,20 @@ int main(void)
sys_lock_tcpip_core();
struct netif *iface = netif_find("ET0aa");
#ifndef MODULE_LWIP_DHCP_AUTO
ip4_addr_t ip, subnet;
ip.addr = _TEST_ADDR4_LOCAL;
subnet.addr = _TEST_ADDR4_MASK;
netif_set_addr(iface, &ip, &subnet, NULL);
#endif
sys_unlock_tcpip_core();
printf("{\"IPv4 addresses\": [\"192.168.100.150\"]}\n");
/* print network addresses */
printf("{\"IPv4 addresses\": [\"");
char buffer[16];
inet_ntop(AF_INET, netif_ip_addr4(iface), buffer, 16);
printf("%s\"]}\n", buffer);
/* initialize nanocoap server instance for IPv4*/
uint8_t buf[COAP_INBUF_SIZE];