Add device-dashboard

tutorials/device-dashboard/led-control/server.c

@@ -0,0 +1,46 @@
+// SPDX-FileCopyrightText: 2026 Cesanta Software Limited
+// SPDX-License-Identifier: GPL-2.0-only or commercial
+
+#include "mongoose.h"
+
+#if MG_ARCH == MG_ARCH_UNIX || MG_ARCH == MG_ARCH_WIN32
+#define HTTP_ADDR "http://0.0.0.0:8000"
+#else
+#define HTTP_ADDR "http://0.0.0.0:80"
+#endif
+
+static const char *s_version = "1.2.3";
+static bool s_led1 = true;  // Mock LED
+
+static void led1_get(union mg_val *val) {
+  val->b = s_led1;
+}
+static void led1_set(const union mg_val *val) {
+  s_led1 = val->b;
+}
+
+static void firmware_version_get(union mg_val *val) {
+  val->s = mg_str(s_version);
+}
+
+// Modify this. This represents device's state to the dashboard
+static struct mg_field fields[] = {
+    {"led1", MG_VAL_BOOL, led1_get, led1_set},
+    {"firmware_version", MG_VAL_STR, firmware_version_get, NULL},
+    {NULL, 0, 0, 0},
+};
+
+void run_mongoose(void) {
+  struct mg_mgr mgr;
+  struct mg_dash dash = {fields};
+  mg_mgr_init(&mgr);
+  mg_http_listen(&mgr, HTTP_ADDR, mg_dash_ev_handler, &dash);
+  for (;;) {
+    mg_mgr_poll(&mgr, 10);
+  }
+}
+
+int main(void) {
+  run_mongoose();
+  return 0;
+}