Add device-dashboard/minimal

tutorials/device-dashboard/minimal/dashboard.c

@@ -0,0 +1,39 @@
+// SPDX-FileCopyrightText: 2026 Cesanta Software Limited
+// SPDX-License-Identifier: GPL-2.0-only or commercial
+
+#include "mongoose.h"
+
+static bool s_led1;
+static char s_version[10];
+
+static struct mg_field fields_status[] = {
+    {"led1", MG_VAL_BOOL, &s_led1, sizeof(s_led1)},
+    {"version", MG_VAL_STR, &s_version, sizeof(s_version)},
+    {NULL, MG_VAL_INT, NULL, 0},
+};
+
+static void read_status(void) {
+  MG_INFO(("READING STATUS"));
+  //s_led1 = gpio_read(LED1_PIN);
+  mg_snprintf(s_version, sizeof(s_version), "1.2.3");
+}
+
+static void write_status(void) {
+  MG_INFO(("WRITING STATUS"));
+  //gpio_write(LED1_PIN, s_led1);
+}
+
+// Each field set translates to REST API /api/NAME
+static struct mg_field_set field_sets[] = {
+    {"status", fields_status, read_status, write_status, 0, 0},
+    {0, 0, 0, 0, 0, 0},
+};
+static struct mg_dash s_dashboard = {field_sets, NULL, NULL};
+
+void mg_dash_init(struct mg_mgr *mgr) {
+  mg_http_listen(mgr, MG_HTTP_ADDR, mg_dash_ev_handler, &s_dashboard);
+}
+
+void mg_dash_poll(struct mg_mgr *mgr) {
+  (void) mgr;
+}