From 2507272357d814c938b1d7ead17ef6f250e7d67b Mon Sep 17 00:00:00 2001
From: Peter Harper <77111776+peterharperuk@users.noreply.github.com>
Date: Tue, 3 Sep 2024 16:52:05 +0100
Subject: [PATCH] Fix compile issues with LWIP_SINGLE_NETIF (#515)

Fixes #514
---
 pico_w/bt/picow_bt_example_common.c               | 2 +-
 pico_w/bt/standalone/server_with_wifi.c           | 2 +-
 pico_w/wifi/freertos/httpd/pico_freertos_httpd.c  | 2 +-
 pico_w/wifi/freertos/iperf/picow_freertos_iperf.c | 2 +-
 pico_w/wifi/httpd/pico_httpd.c                    | 2 +-
 pico_w/wifi/iperf/picow_iperf.c                   | 2 +-
 pico_w/wifi/lwipopts_examples_common.h            | 1 +
 pico_w/wifi/tcp_server/picow_tcp_server.c         | 2 +-
 8 files changed, 8 insertions(+), 7 deletions(-)

diff --git a/pico_w/bt/picow_bt_example_common.c b/pico_w/bt/picow_bt_example_common.c
index 7d93520b1..cd20ceec4 100644
--- a/pico_w/bt/picow_bt_example_common.c
+++ b/pico_w/bt/picow_bt_example_common.c
@@ -97,7 +97,7 @@ void picow_bt_example_main(void) {
     } else {
         printf("Connected in %lus.\n", (to_ms_since_boot(get_absolute_time()) - start_ms) / 1000);
     }
-    printf("\nReady, running iperf server at %s\n", ip4addr_ntoa(netif_ip4_addr(netif_list)));
+    printf("\nReady, running iperf server at %s\n", ip4addr_ntoa(netif_ip4_addr(netif_default)));
     lwiperf_start_tcp_server_default(&iperf_report, NULL);
 #endif
 }
diff --git a/pico_w/bt/standalone/server_with_wifi.c b/pico_w/bt/standalone/server_with_wifi.c
index af17e6f05..014051068 100644
--- a/pico_w/bt/standalone/server_with_wifi.c
+++ b/pico_w/bt/standalone/server_with_wifi.c
@@ -100,7 +100,7 @@ int main() {
 
     // setup iperf
     cyw43_arch_lwip_begin();
-    printf("\nReady, running iperf server at %s\n", ip4addr_ntoa(netif_ip4_addr(netif_list)));
+    printf("\nReady, running iperf server at %s\n", ip4addr_ntoa(netif_ip4_addr(netif_default)));
     lwiperf_start_tcp_server_default(&iperf_report, NULL);
     cyw43_arch_lwip_end();
 
diff --git a/pico_w/wifi/freertos/httpd/pico_freertos_httpd.c b/pico_w/wifi/freertos/httpd/pico_freertos_httpd.c
index 0a262e5de..207be5d7f 100644
--- a/pico_w/wifi/freertos/httpd/pico_freertos_httpd.c
+++ b/pico_w/wifi/freertos/httpd/pico_freertos_httpd.c
@@ -158,7 +158,7 @@ void main_task(__unused void *params) {
 #endif
 #endif
 
-    printf("\nReady, running httpd at %s\n", ip4addr_ntoa(netif_ip4_addr(netif_list)));
+    printf("\nReady, running httpd at %s\n", ip4addr_ntoa(netif_ip4_addr(netif_default)));
     httpd_init();
 
     http_set_cgi_handlers(cgi_handlers, LWIP_ARRAYSIZE(cgi_handlers));
diff --git a/pico_w/wifi/freertos/iperf/picow_freertos_iperf.c b/pico_w/wifi/freertos/iperf/picow_freertos_iperf.c
index 148f6035a..1e8fb6489 100644
--- a/pico_w/wifi/freertos/iperf/picow_freertos_iperf.c
+++ b/pico_w/wifi/freertos/iperf/picow_freertos_iperf.c
@@ -79,7 +79,7 @@ void main_task(__unused void *params) {
     ip4_addr_set_u32(&clientaddr, ipaddr_addr(xstr(IPERF_SERVER_IP)));
     assert(lwiperf_start_tcp_client_default(&clientaddr, &iperf_report, NULL) != NULL);
 #else
-    printf("\nReady, running iperf server at %s\n", ip4addr_ntoa(netif_ip4_addr(netif_list)));
+    printf("\nReady, running iperf server at %s\n", ip4addr_ntoa(netif_ip4_addr(netif_default)));
     lwiperf_start_tcp_server_default(&iperf_report, NULL);
 #endif
     cyw43_arch_lwip_end();
diff --git a/pico_w/wifi/httpd/pico_httpd.c b/pico_w/wifi/httpd/pico_httpd.c
index e469c88f0..87e9f85e9 100644
--- a/pico_w/wifi/httpd/pico_httpd.c
+++ b/pico_w/wifi/httpd/pico_httpd.c
@@ -203,7 +203,7 @@ int main() {
     } else {
         printf("Connected.\n");
     }
-    printf("\nReady, running httpd at %s\n", ip4addr_ntoa(netif_ip4_addr(netif_list)));
+    printf("\nReady, running httpd at %s\n", ip4addr_ntoa(netif_ip4_addr(netif_default)));
 
     // start http server
     wifi_connected_time = get_absolute_time();
diff --git a/pico_w/wifi/iperf/picow_iperf.c b/pico_w/wifi/iperf/picow_iperf.c
index 927e5c7b2..e676591c9 100644
--- a/pico_w/wifi/iperf/picow_iperf.c
+++ b/pico_w/wifi/iperf/picow_iperf.c
@@ -72,7 +72,7 @@ int main() {
     ip4_addr_set_u32(&clientaddr, ipaddr_addr(xstr(IPERF_SERVER_IP)));
     assert(lwiperf_start_tcp_client_default(&clientaddr, &iperf_report, NULL) != NULL);
 #else
-    printf("\nReady, running iperf server at %s\n", ip4addr_ntoa(netif_ip4_addr(netif_list)));
+    printf("\nReady, running iperf server at %s\n", ip4addr_ntoa(netif_ip4_addr(netif_default)));
     lwiperf_start_tcp_server_default(&iperf_report, NULL);
 #endif
     cyw43_arch_lwip_end();
diff --git a/pico_w/wifi/lwipopts_examples_common.h b/pico_w/wifi/lwipopts_examples_common.h
index 217cb1357..a857a1fe5 100644
--- a/pico_w/wifi/lwipopts_examples_common.h
+++ b/pico_w/wifi/lwipopts_examples_common.h
@@ -51,6 +51,7 @@
 #define LWIP_NETIF_TX_SINGLE_PBUF   1
 #define DHCP_DOES_ARP_CHECK         0
 #define LWIP_DHCP_DOES_ACD_CHECK    0
+#define LWIP_SINGLE_NETIF           1
 
 #ifndef NDEBUG
 #define LWIP_DEBUG                  1
diff --git a/pico_w/wifi/tcp_server/picow_tcp_server.c b/pico_w/wifi/tcp_server/picow_tcp_server.c
index f9b500eb4..2d5be709e 100644
--- a/pico_w/wifi/tcp_server/picow_tcp_server.c
+++ b/pico_w/wifi/tcp_server/picow_tcp_server.c
@@ -187,7 +187,7 @@ static err_t tcp_server_accept(void *arg, struct tcp_pcb *client_pcb, err_t err)
 
 static bool tcp_server_open(void *arg) {
     TCP_SERVER_T *state = (TCP_SERVER_T*)arg;
-    DEBUG_printf("Starting server at %s on port %u\n", ip4addr_ntoa(netif_ip4_addr(netif_list)), TCP_PORT);
+    DEBUG_printf("Starting server at %s on port %u\n", ip4addr_ntoa(netif_ip4_addr(netif_default)), TCP_PORT);
 
     struct tcp_pcb *pcb = tcp_new_ip_type(IPADDR_TYPE_ANY);
     if (!pcb) {