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Wi-Fi Initial Setup: Workaround for 11n Only Routers 

Workaround for the hardware limitation of ESP8266. In STA+AP mode it only supports 11b/g. In STA only mode it supports 11b/g/n.
This commit is contained in:
Adrian Scillato 2021-07-05 10:00:10 -03:00 committed by GitHub
parent 512d912b77
commit fb4aac574e
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 35 additions and 7 deletions
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42
tasmota/xdrv_01_webserver.ino
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@ -1,7 +1,7 @@
/*
xdrv_01_webserver.ino - webserver for Tasmota
Copyright (C) 2021 Theo Arends
Copyright (C) 2021 Theo Arends and Adrian Scillato
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@ -394,7 +394,7 @@ const char kUploadErrors[] PROGMEM =
const uint16_t DNS_PORT = 53;
enum HttpOptions {HTTP_OFF, HTTP_USER, HTTP_ADMIN, HTTP_MANAGER, HTTP_MANAGER_RESET_ONLY};
enum WifiTestOptions {WIFI_NOT_TESTING, WIFI_TESTING, WIFI_TEST_FINISHED_SUCCESSFUL, WIFI_TEST_FINISHED_BAD};
enum WifiTestOptions {WIFI_NOT_TESTING, WIFI_TESTING, WIFI_TEST_FINISHED, WIFI_TEST_FINISHED_BAD};
DNSServer *DnsServer;
ESP8266WebServer *Webserver;
@ -412,6 +412,7 @@ struct WEB {
uint8_t wifi_test_counter = 0;
uint16_t save_data_counter = 0;
uint8_t old_wificonfig = MAX_WIFI_OPTION; // means "nothing yet saved here"
bool wifi_test_AP_TIMEOUT = false;
} Web;
// Helper function to avoid code duplication (saves 4k Flash)
@ -1826,13 +1827,17 @@ void HandleWifiConfiguration(void) {
return;
}
if ( WIFI_TEST_FINISHED_SUCCESSFUL == Web.wifiTest ) {
if ( WIFI_TEST_FINISHED == Web.wifiTest ) {
Web.wifiTest = WIFI_NOT_TESTING;
if (Web.wifi_test_AP_TIMEOUT) {
WebRestart(1); // Save credentials and Force Restart in STA only mode (11n-only routers)
} else {
#if (RESTART_AFTER_INITIAL_WIFI_CONFIG)
WebRestart(3);
WebRestart(3);
#else
HandleRoot();
HandleRoot();
#endif
}
}
WSContentStart_P(PSTR(D_CONFIGURE_WIFI), !WifiIsInManagerMode());
@ -3282,8 +3287,9 @@ bool Xdrv01(uint8_t function)
Web.wifi_test_counter--;
AddLog(LOG_LEVEL_DEBUG, PSTR(D_LOG_WIFI D_TRYING_TO_CONNECT " %s"), SettingsText(SET_STASSID1));
if ( WifiCheck_hasIP(WiFi.localIP()) ) { // Got IP - Connection Established
Web.wifi_test_AP_TIMEOUT = false;
Web.wifi_test_counter = 0;
Web.wifiTest = WIFI_TEST_FINISHED_SUCCESSFUL;
Web.wifiTest = WIFI_TEST_FINISHED;
AddLog(LOG_LEVEL_INFO, PSTR(D_LOG_WIFI D_CMND_SSID "1 %s: " D_CONNECTED " - " D_IP_ADDRESS " %_I"), SettingsText(SET_STASSID1), (uint32_t)WiFi.localIP());
// TasmotaGlobal.blinks = 255; // Signal wifi connection with blinks
if (MAX_WIFI_OPTION != Web.old_wificonfig) {
@ -3302,15 +3308,37 @@ bool Xdrv01(uint8_t function)
switch (WiFi.status()) {
case WL_CONNECTED:
AddLog(LOG_LEVEL_INFO, PSTR(D_LOG_WIFI D_CONNECT_FAILED_NO_IP_ADDRESS));
Web.wifi_test_AP_TIMEOUT = false;
break;
case WL_NO_SSID_AVAIL:
AddLog(LOG_LEVEL_INFO, PSTR(D_LOG_WIFI D_CONNECT_FAILED_AP_NOT_REACHED));
Web.wifi_test_AP_TIMEOUT = false;
break;
case WL_CONNECT_FAILED:
AddLog(LOG_LEVEL_INFO, PSTR(D_LOG_WIFI D_CONNECT_FAILED_WRONG_PASSWORD));
Web.wifi_test_AP_TIMEOUT = false;
break;
default: // WL_IDLE_STATUS and WL_DISCONNECTED
default: // WL_IDLE_STATUS and WL_DISCONNECTED - SSId in range but no answer from the router
AddLog(LOG_LEVEL_INFO, PSTR(D_LOG_WIFI D_CONNECT_FAILED_AP_TIMEOUT));
// If this error occurs twice, Tasmota will connect directly to the router without testing crendentials.
// ESP8266 in AP+STA mode can manage only 11b and 11g, so routers that are 11n-ONLY won't respond.
// For this case, the user will see in the UI a message to check credentials. After that, if the user hits
// save and connect again, and the CONNECT_FAILED_AP_TIMEOUT is shown again, Credentials will be saved and
// Tasmota will restart and try to connect in STA mode only (11b/g/n).
//
// If it fails again, depending on the WIFICONFIG settings, the user will need to wait or will need to
// push 6 times the button to enable Tasmota AP mode again.
if (Web.wifi_test_AP_TIMEOUT) {
Web.wifiTest = WIFI_TEST_FINISHED;
AddLog(LOG_LEVEL_INFO, PSTR(D_LOG_WIFI D_CMND_SSID "1 %s: " D_ATTEMPTING_CONNECTION), SettingsText(SET_STASSID1) );
if (MAX_WIFI_OPTION != Web.old_wificonfig) {
TasmotaGlobal.wifi_state_flag = Settings->sta_config = Web.old_wificonfig;
}
TasmotaGlobal.save_data_counter = Web.save_data_counter;
Settings->save_data = Web.save_data_counter;
SettingsSaveAll();
}
Web.wifi_test_AP_TIMEOUT = true;
}
int n = WiFi.scanNetworks(); // restart scan
}