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123 lines
2.3 KiB
C++
123 lines
2.3 KiB
C++
#include "wlan.h"
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#include "settings.h"
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#include <DNSServer.h>
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const char *deviceName = "paperdash-epd";
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RTC_DATA_ATTR int wifiFailedCount = 0;
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// DNS server
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const byte DNS_PORT = 53;
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DNSServer dnsServer;
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/* Soft AP network parameters */
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IPAddress apIP(192,178,4,1);
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bool initClientMode(const char *ssid, const char *password);
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void initAPMode();
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void setupWlan()
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{
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Serial.println("setup Wlan");
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// load wifi settings
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String ssid = NVS.getString("wifi.ssid");
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String password = NVS.getString("wifi.password");
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bool clientMode = false;
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if (!ssid.isEmpty() && !password.isEmpty() && wifiFailedCount <=3)
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{
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// try client mode
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clientMode = initClientMode(ssid.c_str(), password.c_str());
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}
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if (!clientMode)
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{
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// ap mode
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initAPMode();
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}
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WiFi.setHostname(deviceName);
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Serial.println("setup Wlan - done");
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}
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void loopWlan()
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{
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// DNS
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dnsServer.processNextRequest();
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}
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bool initClientMode(const char *ssid, const char *password)
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{
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uint8_t tryCount = 5;
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long startMills = millis();
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Serial.print(" Connecting to: ");
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Serial.print(ssid);
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Serial.print(" ");
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// connecting
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WiFi.mode(WIFI_STA);
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WiFi.begin(ssid, password);
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while (WiFi.status() != WL_CONNECTED)
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{
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delay(500);
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Serial.print(".");
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if (!tryCount--)
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{
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// TODO is this correct?
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WiFi.disconnect();
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wifiFailedCount++;
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if (wifiFailedCount > 3) {
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Serial.println(" wifi is not reachable...");
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return false;
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} else {
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tryCount = 5;
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Serial.println(" wifi reset...");
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delay(500);
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WiFi.begin(ssid, password);
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}
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}
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}
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Serial.println(" ...connected");
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Serial.print(" IP address: ");
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Serial.println(WiFi.localIP());
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if (!MDNS.begin(deviceName)) {
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Serial.println("Error setting up MDNS responder!");
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}
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// Add service to MDNS-SD
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MDNS.addService("http", "tcp", 80);
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MDNS.addServiceTxt("http", "tcp", "paperdash", "epd");
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Serial.print(" connected in: ");
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Serial.println(millis() - startMills);
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return true;
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}
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void initAPMode()
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{
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Serial.println(" init AP (Access Point)");
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WiFi.mode(WIFI_AP);
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WiFi.softAP("paperdash");
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// prevent esp from crashing
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delay(2000);
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WiFi.softAPConfig(apIP, apIP, IPAddress(255, 255, 255, 0));
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// redirect all to local ap
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dnsServer.start(DNS_PORT, "*", apIP);
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IPAddress IP = WiFi.softAPIP();
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Serial.print(" AP IP address: ");
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Serial.println(IP);
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} |