mongoose/examples/esp32/main/main.c
2021-11-11 15:15:47 +00:00

58 lines
2.1 KiB
C

// Copyright (c) 2020 Cesanta Software Limited
// All rights reserved
#include "esp_spiffs.h"
#include "freertos/FreeRTOS.h"
#include "mongoose.h"
#define WIFI_SSID "WIFI_NETWORK" // SET THIS!
#define WIFI_PASS "WIFI_PASSWORD" // SET THIS!
#define FS_ROOT "/spiffs"
// SPIFFS is flat, so tell Mongoose that the FS root is a directory
// This cludge is not required for filesystems with directory support
static int my_stat(const char *path, size_t *size, time_t *mtime) {
int flags = mg_fs_posix.stat(path, size, mtime);
if (strcmp(path, FS_ROOT) == 0) flags |= MG_FS_DIR;
return flags;
}
// Event handler for an server (accepted) connection. Implemented endpoints:
// /api/stats - return JSON object with ESP32 stats (free RAM)
// any other - serve files from the filesystem
static void cb(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
if (ev == MG_EV_HTTP_MSG) {
struct mg_http_message *hm = ev_data;
if (mg_http_match_uri(hm, "/api/stats")) {
mg_http_reply(c, 200, "", "{\"ram\": %lu}\n", xPortGetFreeHeapSize());
} else {
struct mg_fs fs = mg_fs_posix;
fs.stat = my_stat;
struct mg_http_serve_opts opts = {.root_dir = FS_ROOT, .fs = &fs};
mg_http_serve_dir(c, hm, &opts);
}
}
}
void app_main(void) {
// Mount filesystem
esp_vfs_spiffs_conf_t conf = {
.base_path = FS_ROOT, .max_files = 20, .format_if_mount_failed = true};
int res = esp_vfs_spiffs_register(&conf);
LOG(res == ESP_OK ? LL_INFO : LL_ERROR, ("FS %s, %d", conf.base_path, res));
mg_file_printf(FS_ROOT "/hello.txt", "%s", "hello from ESP");
// 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);
// Connected to WiFi, now start HTTP server
struct mg_mgr mgr;
mg_log_set("3");
mg_mgr_init(&mgr);
mg_http_listen(&mgr, "http://0.0.0.0:80", cb, &mgr); // Listening server
LOG(LL_INFO, ("Starting Mongoose web server v%s", MG_VERSION));
for (;;) mg_mgr_poll(&mgr, 1000); // Infinite event loop
}