chore: httpd

.gitignore

@@ -58,3 +58,4 @@ dkms.conf
 main.lst
 main_ext.bin
 main.bin
+bin/

Makefile

@@ -20,10 +20,8 @@ LWIP_C_FILES :=
 LWIP_C_FILES += $(COREFILES)
 LWIP_C_FILES += $(CORE4FILES)
 LWIP_C_FILES += $(NETIFFILES)
-# Add APIFILES if you are using the Netconn/Socket API
+LWIP_C_FILES += $(HTTPFILES)
-# ifeq ($(USE_API), 1)
+
-# LWIP_C_FILES += $(APIFILES)
-# endif
 LWIP_C_FILES_WITH_PATH := $(LWIP_C_FILES)
 LWIP_PORT_FILES := $(wildcard $(PORT_DIR)/*.c)
 
@@ -32,7 +30,7 @@ INCLUDE_DIRS ?= \
 	-I$(LWIP_DIR)/src/include \
 	-I$(PORT_DIR)
 
-PROJECT_C_FILES := $(filter-out ./main.c, $(wildcard ./*.c))
+PROJECT_C_FILES := $(filter-out ./main.c ./fsdata_custom.c, $(wildcard ./*.c))
 LIB_C_FILES := 
 
 # Add all lwIP sources to the main build variable

fsdata_custom.c

@@ -0,0 +1,104 @@
+#include "lwip/apps/fs.h"
+#include "lwip/def.h"
+
+
+#define file_NULL (struct fsdata_file *) NULL
+
+
+#ifndef FS_FILE_FLAGS_HEADER_INCLUDED
+#define FS_FILE_FLAGS_HEADER_INCLUDED 1
+#endif
+#ifndef FS_FILE_FLAGS_HEADER_PERSISTENT
+#define FS_FILE_FLAGS_HEADER_PERSISTENT 0
+#endif
+/* FSDATA_FILE_ALIGNMENT: 0=off, 1=by variable, 2=by include */
+#ifndef FSDATA_FILE_ALIGNMENT
+#define FSDATA_FILE_ALIGNMENT 0
+#endif
+#ifndef FSDATA_ALIGN_PRE
+#define FSDATA_ALIGN_PRE
+#endif
+#ifndef FSDATA_ALIGN_POST
+#define FSDATA_ALIGN_POST
+#endif
+#if FSDATA_FILE_ALIGNMENT==2
+#include "fsdata_alignment.h"
+#endif
+#if FSDATA_FILE_ALIGNMENT==1
+static const unsigned int dummy_align__index_html = 0;
+#endif
+static const unsigned char FSDATA_ALIGN_PRE data__index_html[] FSDATA_ALIGN_POST = {
+/* /index.html (12 chars) */
+0x2f,0x69,0x6e,0x64,0x65,0x78,0x2e,0x68,0x74,0x6d,0x6c,0x00,
+
+/* HTTP header */
+/* "HTTP/1.0 200 OK
+" (17 bytes) */
+0x48,0x54,0x54,0x50,0x2f,0x31,0x2e,0x30,0x20,0x32,0x30,0x30,0x20,0x4f,0x4b,0x0d,
+0x0a,
+/* "Server: lwIP/2.2.2d (http://savannah.nongnu.org/projects/lwip)
+" (64 bytes) */
+0x53,0x65,0x72,0x76,0x65,0x72,0x3a,0x20,0x6c,0x77,0x49,0x50,0x2f,0x32,0x2e,0x32,
+0x2e,0x32,0x64,0x20,0x28,0x68,0x74,0x74,0x70,0x3a,0x2f,0x2f,0x73,0x61,0x76,0x61,
+0x6e,0x6e,0x61,0x68,0x2e,0x6e,0x6f,0x6e,0x67,0x6e,0x75,0x2e,0x6f,0x72,0x67,0x2f,
+0x70,0x72,0x6f,0x6a,0x65,0x63,0x74,0x73,0x2f,0x6c,0x77,0x69,0x70,0x29,0x0d,0x0a,
+
+/* "Content-Length: 549
+" (18+ bytes) */
+0x43,0x6f,0x6e,0x74,0x65,0x6e,0x74,0x2d,0x4c,0x65,0x6e,0x67,0x74,0x68,0x3a,0x20,
+0x35,0x34,0x39,0x0d,0x0a,
+/* "Content-Type: text/html
+
+" (27 bytes) */
+0x43,0x6f,0x6e,0x74,0x65,0x6e,0x74,0x2d,0x54,0x79,0x70,0x65,0x3a,0x20,0x74,0x65,
+0x78,0x74,0x2f,0x68,0x74,0x6d,0x6c,0x0d,0x0a,0x0d,0x0a,
+/* raw file data (549 bytes) */
+0x3c,0x21,0x44,0x4f,0x43,0x54,0x59,0x50,0x45,0x20,0x68,0x74,0x6d,0x6c,0x3e,0x0a,
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+0x20,0x75,0x73,0x69,0x6e,0x67,0x20,0x6c,0x77,0x49,0x50,0x2e,0x3c,0x2f,0x70,0x3e,
+0x0a,0x20,0x20,0x20,0x20,0x3c,0x2f,0x62,0x6f,0x64,0x79,0x3e,0x0a,0x3c,0x2f,0x68,
+0x74,0x6d,0x6c,0x3e,0x0a,};
+
+
+
+const struct fsdata_file file__index_html[] = { {
+file_NULL,
+data__index_html,
+data__index_html + 12,
+sizeof(data__index_html) - 12,
+FS_FILE_FLAGS_HEADER_INCLUDED | FS_FILE_FLAGS_HEADER_PERSISTENT,
+}};
+
+#define FS_ROOT file__index_html
+#define FS_NUMFILES 1
+

main.c

@@ -3,6 +3,7 @@
 #include "ch32fun.h"
 #include "ch32v20xhw.h"
 #include "ethernetif.h"
+#include "lwip/apps/httpd.h"
 #include "lwip/dhcp.h"
 #include "lwip/init.h"
 #include "lwip/netif.h"
@@ -73,6 +74,26 @@ void led_init(void) {
   GPIOA->CFGLR |= (GPIO_Speed_10MHz | GPIO_CNF_OUT_PP) << (4 * LED2_PIN);
 }
 
+static void netif_status_callback(struct netif* netif) {
+  if (netif_is_up(netif) && !ip_addr_isany_val(*netif_ip4_addr(netif))) {
+    printf("netif UP\n");
+    printf("  MAC  : %02X:%02X:%02X:%02X:%02X:%02X\n", netif->hwaddr[0],
+           netif->hwaddr[1], netif->hwaddr[2], netif->hwaddr[3],
+           netif->hwaddr[4], netif->hwaddr[5]);
+    printf("  IP   : %s\n", ip4addr_ntoa(netif_ip4_addr(netif)));
+    printf("  Mask : %s\n", ip4addr_ntoa(netif_ip4_netmask(netif)));
+    printf("  GW   : %s\n", ip4addr_ntoa(netif_ip4_gw(netif)));
+
+    httpd_init();
+    printf("HTTP server init\n");
+    GPIOA->BSHR = (1 << LED2_PIN);
+
+  } else {
+    printf("netif DOWN or has no IP address\n");
+    GPIOA->BSHR = (1 << (LED2_PIN + 16));
+  }
+}
+
 void lwip_stack_init(void) {
   ip_addr_t ipaddr, netmask, gw;
 
@@ -85,6 +106,8 @@ void lwip_stack_init(void) {
   netif_add(&g_netif, &ipaddr, &netmask, &gw, NULL, &ethernetif_init,
             &ethernet_input);
 
+  netif_set_status_callback(&g_netif, netif_status_callback);
+
   netif_set_default(&g_netif);
   netif_set_up(&g_netif);
 
@@ -107,18 +130,16 @@ int main() {
   uint32_t last_led_toggle_time = 0;
   uint32_t last_link_poll_time = 0;
   int led_state = 0;
-  int ip_address_printed = 0;
 
   while (1) {
     ethernetif_input(&g_netif);
+    sys_check_timeouts();
 
     if (millis() - last_link_poll_time > LINK_POLL_INTERVAL_MS) {
       ethernetif_link_poll(&g_netif);
       last_link_poll_time = millis();
     }
 
-    sys_check_timeouts();
-
     uint32_t now = millis();
     if (now - last_led_toggle_time > LED_TOGGLE_INTERVAL_MS) {
       if (led_state) {
@@ -129,13 +150,5 @@ int main() {
       led_state = !led_state;
       last_led_toggle_time = now;
     }
-
-    if (!ip_address_printed && g_netif.ip_addr.addr != 0) {
-      printf("IP address assigned: %s\n",
-             ip4addr_ntoa(netif_ip4_addr(&g_netif)));
-      ip_address_printed = 1;
-
-      GPIOA->BSHR = (1 << LED2_PIN);
-    }
   }
 }

port/lwipopts.h

@@ -6,7 +6,7 @@
 
 // #define UDP_DEBUG LWIP_DBG_ON
 // #define IP_DEBUG LWIP_DBG_ON
-#define DHCP_DEBUG LWIP_DBG_ON
+// #define DHCP_DEBUG LWIP_DBG_ON
 #define NETIF_DEBUG LWIP_DBG_ON
 // #define ETHARP_DEBUG LWIP_DBG_ON
 
@@ -17,7 +17,7 @@
 
 // Memory options
 #define MEM_ALIGNMENT 4
-#define MEM_SIZE (4 * 1024)  // 4KB of RAM for lwIP heap
+#define MEM_SIZE (10 * 1024)  // 4KB of RAM for lwIP heap
 
 // Pbuf options
 #define PBUF_POOL_SIZE 8
@@ -52,6 +52,14 @@
 // Statistics
 #define LWIP_STATS 0
 
+#define LWIP_HTTPD 1
+// Use a read-only filesystem populated by makefsdata
+// #define HTTPD_FSDATA_FILE "fsdata_custom.c"
+#define LWIP_HTTPD_FS_SUPPORT 1
+#define HTTPD_USE_CUSTOM_FSDATA 1
+
+#define LWIP_NETIF_HOSTNAME 1
 // #define LWIP_NETIF_LINK_CALLBACK 1
+#define LWIP_NETIF_STATUS_CALLBACK 1
 
 #endif /* __LWIPOPTS_H__ */

web_content/index.html

@@ -0,0 +1,24 @@
+<!DOCTYPE html>
+<html>
+    <head>
+        <title>Hello from CH32V208</title>
+        <style>
+            body {
+                font-family: sans-serif;
+                text-align: center;
+                background-color: #f0f0f0;
+                margin-top: 50px;
+            }
+            h1 {
+                color: #333;
+            }
+            p {
+                color: #555;
+            }
+        </style>
+    </head>
+    <body>
+        <h1>Hello World</h1>
+        <p>This page is served from CH32V208 using lwIP.</p>
+    </body>
+</html>