Add esp32 example

examples/esp32/main/main.c

@@ -0,0 +1,36 @@
+// Copyright (c) 2020 Cesanta Software Limited
+// All rights reserved
+
+#include "mongoose.h"
+
+#define WIFI_SSID "MY_WIFI_NETWORK"
+#define WIFI_PASS "MY_WIFI_PASSWORD"
+#define LISTENING_ADDR "http://0.0.0.0:80"
+
+// Event handler for an accepted connection
+static void cb(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
+  if (ev == MG_EV_HTTP_MSG) {
+    mg_http_reply(c, 200, "Hello from ESP32!");
+  }
+}
+
+// Called after we're connected to WiFi network
+static void start_server(void) {
+  struct mg_mgr mgr;
+  mg_log_set("3");
+  mg_mgr_init(&mgr);
+  mg_http_listen(&mgr, LISTENING_ADDR, cb, &mgr);
+  LOG(LL_INFO, ("Starting Mongoose web server v%s", MG_VERSION));
+  for (;;) mg_mgr_poll(&mgr, 1000);
+  mg_mgr_free(&mgr);
+}
+
+void app_main(void) {
+  // Setup wifi. This function is implemented in wifi.c
+  // It blocks until connected to the configured WiFi network
+  void wifi_init(const char *ssid, const char *pass);
+  wifi_init(WIFI_SSID, WIFI_PASS);
+
+  // Done connecting to WiFi, now start HTTP server
+  start_server();
+}