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328 lines
9.7 KiB
328 lines
9.7 KiB
//-----------------------------------------------------------------------------
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// 2022 Ahoy, https://www.mikrocontroller.net/topic/525778
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// Creative Commons - http://creativecommons.org/licenses/by-nc-sa/3.0/de/
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//-----------------------------------------------------------------------------
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#include "main.h"
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#include "version.h"
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//-----------------------------------------------------------------------------
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Main::Main(void) {
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mDns = new DNSServer();
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mWeb = new ESP8266WebServer(80);
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mUdp = new WiFiUDP();
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memset(&config, 0, sizeof(config_t));
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config.apActive = true;
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mWifiSettingsValid = false;
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mSettingsValid = false;
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mLimit = 10;
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mNextTryTs = 0;
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mApLastTick = 0;
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// default config
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snprintf(config.version, 12, "%d.%d.%d", VERSION_MAJOR, VERSION_MINOR, VERSION_PATCH);
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config.apActive = false;
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config.sendInterval = SEND_INTERVAL;
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mEep = new eep();
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Serial.begin(115200);
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DPRINTLN(DBG_VERBOSE, F("Main::Main"));
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mUptimeSecs = 0;
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mUptimeTicker = 0xffffffff;
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mUptimeInterval = 1000;
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#ifdef AP_ONLY
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mTimestamp = 1;
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#else
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mTimestamp = 0;
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#endif
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mHeapStatCnt = 0;
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}
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//-----------------------------------------------------------------------------
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void Main::setup(uint32_t timeout) {
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DPRINTLN(DBG_VERBOSE, F("Main::setup"));
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bool startAp = config.apActive;
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mLimit = timeout;
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startAp = getConfig();
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#ifndef AP_ONLY
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if(false == startAp)
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startAp = setupStation(timeout);
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#endif
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config.apActive = startAp;
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mStActive = !startAp;
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}
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//-----------------------------------------------------------------------------
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void Main::loop(void) {
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//DPRINTLN(DBG_VERBOSE, F("M"));
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if(config.apActive) {
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mDns->processNextRequest();
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#ifndef AP_ONLY
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if(checkTicker(&mNextTryTs, (WIFI_AP_ACTIVE_TIME * 1000))) {
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config.apActive = setupStation(mLimit);
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if(config.apActive) {
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if(strlen(WIFI_AP_PWD) < 8)
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DPRINTLN(DBG_ERROR, F("password must be at least 8 characters long"));
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mApLastTick = millis();
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mNextTryTs = (millis() + (WIFI_AP_ACTIVE_TIME * 1000));
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setupAp(WIFI_AP_SSID, WIFI_AP_PWD);
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}
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}
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else {
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if(millis() - mApLastTick > 10000) {
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uint8_t cnt = WiFi.softAPgetStationNum();
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if(cnt > 0) {
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DPRINTLN(DBG_INFO, String(cnt) + F(" clients connected, resetting AP timeout"));
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mNextTryTs = (millis() + (WIFI_AP_ACTIVE_TIME * 1000));
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}
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mApLastTick = millis();
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DPRINTLN(DBG_INFO, F("AP will be closed in ") + String((mNextTryTs - mApLastTick) / 1000) + F(" seconds"));
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}
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}
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#endif
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}
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mWeb->handleClient();
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if(checkTicker(&mUptimeTicker, mUptimeInterval)) {
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mUptimeSecs++;
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if(0 != mTimestamp)
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mTimestamp++;
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else {
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if(!config.apActive) {
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mTimestamp = getNtpTime();
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DPRINTLN(DBG_INFO, "[NTP]: " + getDateTimeStr(mTimestamp));
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}
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}
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/*if(++mHeapStatCnt >= 10) {
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mHeapStatCnt = 0;
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stats();
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}*/
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}
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if (WiFi.status() != WL_CONNECTED) {
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DPRINTLN(DBG_INFO, "[WiFi]: Connection Lost");
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mStActive = false;
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}
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}
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//-----------------------------------------------------------------------------
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bool Main::getConfig(void) {
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DPRINTLN(DBG_VERBOSE, F("Main::getConfig"));
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config.apActive = false;
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mWifiSettingsValid = checkEEpCrc(ADDR_START, ADDR_WIFI_CRC, ADDR_WIFI_CRC);
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mSettingsValid = checkEEpCrc(ADDR_START_SETTINGS, ((ADDR_NEXT)-(ADDR_START_SETTINGS)), ADDR_SETTINGS_CRC);
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if(mWifiSettingsValid) {
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mEep->read(ADDR_SSID, config.stationSsid, SSID_LEN);
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mEep->read(ADDR_PWD, config.stationPwd, PWD_LEN);
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mEep->read(ADDR_DEVNAME, config.deviceName, DEVNAME_LEN);
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}
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if((!mWifiSettingsValid) || (config.stationSsid[0] == 0xff)) {
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snprintf(config.stationSsid, SSID_LEN, "%s", FB_WIFI_SSID);
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snprintf(config.stationPwd, PWD_LEN, "%s", FB_WIFI_PWD);
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snprintf(config.deviceName, DEVNAME_LEN, "%s", DEF_DEVICE_NAME);
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}
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return config.apActive;
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}
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//-----------------------------------------------------------------------------
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void Main::setupAp(const char *ssid, const char *pwd) {
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DPRINTLN(DBG_VERBOSE, F("Main::setupAp"));
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IPAddress apIp(192, 168, 1, 1);
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DPRINTLN(DBG_INFO, F("\n---------\nAP MODE\nSSID: ")
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+ String(ssid) + F("\nPWD: ")
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+ String(pwd) + F("\nActive for: ")
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+ String(WIFI_AP_ACTIVE_TIME) + F(" seconds")
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+ F("\n---------\n"));
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DPRINTLN(DBG_DEBUG, String(mNextTryTs));
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WiFi.mode(WIFI_AP);
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WiFi.softAPConfig(apIp, apIp, IPAddress(255, 255, 255, 0));
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WiFi.softAP(ssid, pwd);
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mDns->start(mDnsPort, "*", apIp);
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/*mWeb->onNotFound([&]() {
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showSetup();
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});
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mWeb->on("/", std::bind(&Main::showSetup, this));
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mWeb->begin();*/
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}
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//-----------------------------------------------------------------------------
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bool Main::setupStation(uint32_t timeout) {
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DPRINTLN(DBG_VERBOSE, F("Main::setupStation"));
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int32_t cnt;
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bool startAp = false;
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if(timeout >= 3)
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cnt = (timeout - 3) / 2 * 10;
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else {
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timeout = 1;
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cnt = 1;
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}
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WiFi.mode(WIFI_STA);
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WiFi.begin(config.stationSsid, config.stationPwd);
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if(String(config.deviceName) != "")
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WiFi.hostname(config.deviceName);
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delay(2000);
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DPRINTLN(DBG_INFO, F("connect to network '") + String(config.stationSsid) + F("' ..."));
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while (WiFi.status() != WL_CONNECTED) {
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delay(100);
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if(cnt % 100 == 0)
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Serial.println(".");
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else
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Serial.print(".");
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if(timeout > 0) { // limit == 0 -> no limit
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if(--cnt <= 0) {
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if(WiFi.status() != WL_CONNECTED) {
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startAp = true;
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WiFi.disconnect();
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}
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delay(100);
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break;
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}
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}
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}
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Serial.println(".");
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if(false == startAp) {
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mWeb->begin();
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}
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delay(1000);
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return startAp;
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}
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//-----------------------------------------------------------------------------
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void Main::saveValues(uint32_t saveMask = 0) {
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DPRINTLN(DBG_VERBOSE, F("Main::saveValues"));
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if(CHK_MSK(saveMask, SAVE_SSID))
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mEep->write(ADDR_SSID, config.stationSsid, SSID_LEN);
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if(CHK_MSK(saveMask, SAVE_PWD))
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mEep->write(ADDR_PWD, config.stationPwd, SSID_LEN);
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if(CHK_MSK(saveMask, SAVE_DEVICE_NAME))
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mEep->write(ADDR_DEVNAME, config.deviceName, DEVNAME_LEN);
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if(saveMask > 0) {
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updateCrc();
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mEep->commit();
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}
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}
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//-----------------------------------------------------------------------------
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void Main::updateCrc(void) {
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DPRINTLN(DBG_VERBOSE, F("Main::updateCrc"));
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uint16_t crc;
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crc = buildEEpCrc(ADDR_START, ADDR_WIFI_CRC);
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//Serial.println("new CRC: " + String(crc, HEX));
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mEep->write(ADDR_WIFI_CRC, crc);
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mEep->commit();
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}
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//-----------------------------------------------------------------------------
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time_t Main::getNtpTime(void) {
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//DPRINTLN(DBG_VERBOSE, F("Main::getNtpTime"));
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time_t date = 0;
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IPAddress timeServer;
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uint8_t buf[NTP_PACKET_SIZE];
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uint8_t retry = 0;
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WiFi.hostByName(NTP_SERVER_NAME, timeServer);
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mUdp->begin(NTP_LOCAL_PORT);
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sendNTPpacket(timeServer);
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while(retry++ < 5) {
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int wait = 150;
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while(--wait) {
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if(NTP_PACKET_SIZE <= mUdp->parsePacket()) {
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uint64_t secsSince1900;
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mUdp->read(buf, NTP_PACKET_SIZE);
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secsSince1900 = (buf[40] << 24);
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secsSince1900 |= (buf[41] << 16);
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secsSince1900 |= (buf[42] << 8);
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secsSince1900 |= (buf[43] );
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date = secsSince1900 - 2208988800UL; // UTC time
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date += (TIMEZONE + offsetDayLightSaving(date)) * 3600;
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break;
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}
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else
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delay(10);
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}
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}
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return date;
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}
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//-----------------------------------------------------------------------------
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void Main::sendNTPpacket(IPAddress& address) {
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//DPRINTLN(DBG_VERBOSE, F("Main::sendNTPpacket"));
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uint8_t buf[NTP_PACKET_SIZE] = {0};
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buf[0] = B11100011; // LI, Version, Mode
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buf[1] = 0; // Stratum
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buf[2] = 6; // Max Interval between messages in seconds
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buf[3] = 0xEC; // Clock Precision
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// bytes 4 - 11 are for Root Delay and Dispersion and were set to 0 by memset
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buf[12] = 49; // four-byte reference ID identifying
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buf[13] = 0x4E;
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buf[14] = 49;
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buf[15] = 52;
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mUdp->beginPacket(address, 123); // NTP request, port 123
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mUdp->write(buf, NTP_PACKET_SIZE);
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mUdp->endPacket();
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}
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//-----------------------------------------------------------------------------
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// calculates the daylight saving time for middle Europe. Input: Unixtime in UTC
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// from: https://forum.arduino.cc/index.php?topic=172044.msg1278536#msg1278536
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time_t Main::offsetDayLightSaving (uint32_t local_t) {
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//DPRINTLN(DBG_VERBOSE, F("Main::offsetDayLightSaving"));
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int m = month (local_t);
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if(m < 3 || m > 10) return 0; // no DSL in Jan, Feb, Nov, Dez
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if(m > 3 && m < 10) return 1; // DSL in Apr, May, Jun, Jul, Aug, Sep
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int y = year (local_t);
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int h = hour (local_t);
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int hToday = (h + 24 * day(local_t));
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if((m == 3 && hToday >= (1 + TIMEZONE + 24 * (31 - (5 * y /4 + 4) % 7)))
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|| (m == 10 && hToday < (1 + TIMEZONE + 24 * (31 - (5 * y /4 + 1) % 7))) )
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return 1;
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else
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return 0;
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}
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