Merge pull request #27 from softhack007/S2_patch3

LOLIN_WIFI_FIX

platformio.ini

@@ -143,6 +143,7 @@ build_flags = ${env.build_flags}
   ; -DARDUINO_USB_CDC_ON_BOOT=0 -DARDUINO_USB_DFU_ON_BOOT=1 -DARDUINO_USB_MSC_ON_BOOT=0 ;; with serial-to-USB moddule (use in case your board hangs without USB connection)
   -DARDUINO_USB_MODE=0        ;; Make sure that the right HardwareSerial driver is picked in arduino-esp32 (mandatory on -S2)
   ; -D DEBUG=1 -D CORE_DEBUG_LEVEL=1 -D ARDUINOJSON_DEBUG=1 ;; for more debug output
+  -D LOLIN_WIFI_FIX ;; workaround for LOLIN C3/S2/S3 wifi instability. https://www.wemos.cc/en/latest/c3/c3_mini_1_0_0.html#about-wifi
 
 
 [env:lolin_c3_mini]

src/Sys/SysModNetwork.cpp

@@ -131,6 +131,9 @@ void SysModNetwork::initConnection() {
     for (int i = 0; i < strlen(password); i++) strncat(passXXX, "*", sizeof(passXXX)-1);
     USER_PRINTF("Connecting to WiFi %s / %s\n", ssid, passXXX);
     WiFi.begin(ssid, password);
+    #if defined(LOLIN_WIFI_FIX) && (defined(ARDUINO_ARCH_ESP32C3) || defined(ARDUINO_ARCH_ESP32S2) || defined(ARDUINO_ARCH_ESP32S3))
+      WiFi.setTxPower(WIFI_POWER_8_5dBm);
+    #endif
   }
   else
     USER_PRINTF("No SSID");
@@ -140,6 +143,9 @@ void SysModNetwork::initAP() {
   USER_PRINTF("Opening access point %s\n", apSSID);
   WiFi.softAPConfig(IPAddress(4, 3, 2, 1), IPAddress(4, 3, 2, 1), IPAddress(255, 255, 255, 0));
   WiFi.softAP(apSSID, apPass, apChannel, apHide);
+  #if defined(LOLIN_WIFI_FIX) && (defined(ARDUINO_ARCH_ESP32C3) || defined(ARDUINO_ARCH_ESP32S2) || defined(ARDUINO_ARCH_ESP32S3))
+    WiFi.setTxPower(WIFI_POWER_8_5dBm);
+  #endif
   if (!apActive) // start captive portal if AP active
   {
     mdl->setUIValueV("nwstatus", "AP %s / %s @ %s", apSSID, apPass, WiFi.softAPIP().toString().c_str());