generated from ben/template
added webserver
This commit is contained in:
259
vtech.org
259
vtech.org
@@ -18624,3 +18624,262 @@ void loop() {
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try hardcoded station connect
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if fail, start softap + web portal
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from portal, optionally save new ssid/pwd and switch to station mode
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* webserver
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#+begin_src c++
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#include <WiFi.h>
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#include <WebServer.h>
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#include <Preferences.h>
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#include <driver/touch_pad.h>
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Preferences prefs;
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WebServer server(80);
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// touch pad used as boot override / setup trigger
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const touch_pad_t touch_pin = TOUCH_PAD_NUM4; // gpio13
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const int touch_threshold = 500;
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// softap fallback
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const char* ap_ssid = "baby-monitor-setup";
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const char* ap_password = "setup1234";
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// saved / editable config
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String wifi_ssid = "";
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String wifi_password = "";
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String dest_ip_str = "192.168.1.190";
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uint16_t udp_port = 5004;
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bool config_mode = false;
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const unsigned long wifi_connect_timeout_ms = 15000;
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String html_escape(const String& s) {
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String out = s;
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out.replace("&", "&");
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out.replace("<", "<");
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out.replace(">", ">");
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out.replace("\"", """);
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return out;
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}
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void load_config() {
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prefs.begin("bmcfg", true);
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wifi_ssid = prefs.getString("ssid", "");
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wifi_password = prefs.getString("pwd", "");
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dest_ip_str = prefs.getString("destip", "192.168.1.190");
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udp_port = prefs.getUShort("port", 5004);
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prefs.end();
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}
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void save_config(const String& ssid, const String& pwd, const String& dest_ip, uint16_t port) {
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prefs.begin("bmcfg", false);
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prefs.putString("ssid", ssid);
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prefs.putString("pwd", pwd);
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prefs.putString("destip", dest_ip);
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prefs.putUShort("port", port);
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prefs.end();
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}
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void clear_config() {
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prefs.begin("bmcfg", false);
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prefs.clear();
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prefs.end();
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}
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bool force_setup_requested() {
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// give touch pad a moment to settle
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delay(100);
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uint16_t touch_val = 0;
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touch_pad_read(touch_pin, &touch_val);
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Serial.printf("touch boot check: %u\n", touch_val);
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return touch_val < touch_threshold;
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}
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void handle_root() {
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String page =
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"<!doctype html>"
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"<html><head>"
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"<meta name='viewport' content='width=device-width,initial-scale=1'>"
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"<title>baby monitor setup</title>"
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"<style>"
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"body{font-family:sans-serif;max-width:520px;margin:2rem auto;padding:0 1rem;}"
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"input{width:100%;padding:.6rem;margin:.2rem 0 1rem 0;box-sizing:border-box;}"
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"button{padding:.7rem 1rem;margin-right:.5rem;}"
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"code{background:#eee;padding:.1rem .3rem;}"
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"</style>"
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"</head><body>"
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"<h2>baby monitor setup</h2>"
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"<p>connect to ap <code>" + String(ap_ssid) + "</code> then browse to <code>192.168.4.1</code>.</p>"
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"<form method='post' action='/save'>"
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"<label>wifi ssid</label>"
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"<input name='ssid' value='" + html_escape(wifi_ssid) + "'>"
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"<label>wifi password</label>"
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"<input name='pwd' type='password' value='" + html_escape(wifi_password) + "'>"
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"<label>destination ip</label>"
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"<input name='destip' value='" + html_escape(dest_ip_str) + "'>"
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"<label>udp port</label>"
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"<input name='port' value='" + String(udp_port) + "'>"
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"<button type='submit'>save and reboot</button>"
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"</form>"
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"<form method='post' action='/clear' onsubmit='return confirm(\"clear saved config?\");'>"
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"<button type='submit'>clear saved config</button>"
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"</form>"
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"<p><a href='/status'>status json</a></p>"
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"</body></html>";
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server.send(200, "text/html", page);
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}
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void handle_status() {
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String json = "{";
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json += "\"config_mode\":" + String(config_mode ? "true" : "false") + ",";
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json += "\"ap_ssid\":\"" + String(ap_ssid) + "\",";
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json += "\"saved_ssid\":\"" + html_escape(wifi_ssid) + "\",";
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json += "\"dest_ip\":\"" + html_escape(dest_ip_str) + "\",";
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json += "\"udp_port\":" + String(udp_port);
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json += "}";
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server.send(200, "application/json", json);
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}
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bool valid_ipv4(const String& s) {
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IPAddress ip;
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return ip.fromString(s);
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}
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void handle_save() {
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String new_ssid = server.arg("ssid");
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String new_pwd = server.arg("pwd");
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String new_dest = server.arg("destip");
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uint16_t new_port = (uint16_t)server.arg("port").toInt();
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if (new_ssid.length() == 0) {
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server.send(400, "text/plain", "ssid required");
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return;
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}
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if (!valid_ipv4(new_dest)) {
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server.send(400, "text/plain", "invalid destination ip");
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return;
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}
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if (new_port == 0) {
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server.send(400, "text/plain", "invalid udp port");
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return;
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}
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save_config(new_ssid, new_pwd, new_dest, new_port);
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server.send(200, "text/html",
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"<html><body><h3>saved. rebooting...</h3></body></html>");
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delay(1000);
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esp_restart();
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}
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void handle_clear() {
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clear_config();
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server.send(200, "text/html",
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"<html><body><h3>config cleared. rebooting...</h3></body></html>");
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delay(1000);
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esp_restart();
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}
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void start_config_ap() {
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config_mode = true;
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WiFi.disconnect(true, true);
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delay(250);
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WiFi.mode(WIFI_AP);
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WiFi.softAP(ap_ssid, ap_password);
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IPAddress ip = WiFi.softAPIP();
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Serial.printf("config ap active\n");
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Serial.printf(" ssid: %s\n", ap_ssid);
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Serial.printf(" pass: %s\n", ap_password);
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Serial.printf(" ip: %s\n", ip.toString().c_str());
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server.on("/", HTTP_GET, handle_root);
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server.on("/save", HTTP_POST, handle_save);
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server.on("/clear", HTTP_POST, handle_clear);
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server.on("/status", HTTP_GET, handle_status);
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server.begin();
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}
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bool try_connect_wifi() {
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if (wifi_ssid.length() == 0) {
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Serial.println("no saved wifi ssid");
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return false;
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}
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WiFi.disconnect(true, true);
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delay(250);
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WiFi.mode(WIFI_STA);
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WiFi.begin(wifi_ssid.c_str(), wifi_password.c_str());
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Serial.printf("connecting to wifi: %s\n", wifi_ssid.c_str());
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unsigned long start = millis();
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while (WiFi.status() != WL_CONNECTED &&
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millis() - start < wifi_connect_timeout_ms) {
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delay(500);
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Serial.print(".");
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}
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Serial.println();
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if (WiFi.status() == WL_CONNECTED) {
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Serial.printf("connected\n");
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Serial.printf(" ip: %s\n", WiFi.localIP().toString().c_str());
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Serial.printf(" dest ip: %s\n", dest_ip_str.c_str());
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Serial.printf(" udp port: %u\n", udp_port);
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return true;
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}
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Serial.println("wifi connect failed");
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return false;
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}
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void setup() {
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Serial.begin(115200);
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delay(200);
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touch_pad_init();
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touch_pad_set_voltage(TOUCH_HVOLT_2V7, TOUCH_LVOLT_0V5, TOUCH_HVOLT_ATTEN_1V);
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touch_pad_config(touch_pin, 0);
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load_config();
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if (force_setup_requested()) {
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Serial.println("force setup mode requested");
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start_config_ap();
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return;
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}
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if (!try_connect_wifi()) {
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start_config_ap();
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}
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}
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void loop() {
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if (config_mode) {
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server.handleClient();
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delay(2);
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return;
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}
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// placeholder for later normal-mode behavior
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static unsigned long last_print = 0;
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if (millis() - last_print > 5000) {
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Serial.printf("normal mode alive. wifi=%s ip=%s dest=%s:%u\n",
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wifi_ssid.c_str(),
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WiFi.localIP().toString().c_str(),
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dest_ip_str.c_str(),
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udp_port);
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last_print = millis();
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}
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delay(10);
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}
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#+end_src
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