Correct way of iterating through different WiFi connections?
Posted: Tue Apr 12, 2022 5:05 amI have some very simple clocks. ESP8266, bit banged 7 seg LED module, DS1307 battery backed RTC.
They connect to my WiFi and then time server every 24 hours because of RTC drift. If they fail to connect they try again in 1 hour until they finally connect. I hold a reset count in EEPROM.
This has worked flawlessly for a few years now using the following connect code :
After the time has been obtained from the server I send myself an email to that effect, containing the last reset reason and then do a :
I've recently changed my WiFi extender (BT hotspot to TP Link). It doesn't have as strong a signal as the old one. So I now check for both my router's SSID and my TPLINK SSID to get a connection.
But my reset counter is increasing daily. So there is an issue. It's flagging REASON_EXT_SYS_RST.
I changed the code to this : Is this the correct way to do multiple SSID's?
They connect to my WiFi and then time server every 24 hours because of RTC drift. If they fail to connect they try again in 1 hour until they finally connect. I hold a reset count in EEPROM.
This has worked flawlessly for a few years now using the following connect code :
After the time has been obtained from the server I send myself an email to that effect, containing the last reset reason and then do a :
Code: Select all
WiFi.disconnect();
WiFi.mode(WIFI_OFF);
WiFi.forceSleepBegin();
delay(100);
Code: Select all
bool connectToInternet(void)
{
bool blnRetVal = false;
char bytC;
WiFi.forceSleepWake();
delay(1);
WiFi.mode(WIFI_STA);
wifi_station_connect();
// Set WiFi to station mode and disconnect from an AP if it was previously connected
WiFi.mode(WIFI_STA);
WiFi.disconnect();
delay(100);
#ifdef WIFI_DEBUG
Serial.print("Trying to connect to :\r\n");
#endif
#ifdef WIFI_DEBUG
Serial.print("My SSID ");
#endif
WiFi.begin("SSID", "PWD");
bytC = 0;
while (WiFi.status() != WL_CONNECTED && bytC < 32)
{
#ifdef WIFI_DEBUG
Serial.print(".");
#endif
bytC++;
delay(500);
}
#ifdef WIFI_DEBUG
Serial.println("\r\n");
#endif
if (WiFi.status() == WL_CONNECTED)
{
#ifdef WIFI_DEBUG
Serial.println("Connected");
#endif
bytC = 0;
while (bytC < 10 && getInitialTimeFromServer() == false)
{
bytC++;
delay(500);
}
if (bytC < 10)
blnRetVal = true;
}
else
{
#ifdef WIFI_DEBUG
Serial.println("WiFi NOT connected");
#endif
}
return blnRetVal;
}
I've recently changed my WiFi extender (BT hotspot to TP Link). It doesn't have as strong a signal as the old one. So I now check for both my router's SSID and my TPLINK SSID to get a connection.
But my reset counter is increasing daily. So there is an issue. It's flagging REASON_EXT_SYS_RST.
I changed the code to this : Is this the correct way to do multiple SSID's?
Code: Select all
bool connectToInternet(void)
{
bool blnRetVal = false;
char bytC, bytN;
WiFi.forceSleepWake();
delay(1);
WiFi.mode(WIFI_STA);
wifi_station_connect();
// Set WiFi to station mode and disconnect from an AP if it was previously connected
WiFi.mode(WIFI_STA);
WiFi.disconnect();
delay(100);
#ifdef WIFI_DEBUG
Serial.print("Trying to connect to :\r\n");
#endif
for (bytN = 0; bytN < 2; bytN++)
{
if (bytN == 0)
{
#ifdef WIFI_DEBUG
Serial.print("SSID 1 ");
#endif
WiFi.begin("SSID 1", "PWD 1");
}
if (bytN == 1)
{
#ifdef WIFI_DEBUG
Serial.print("SSID 2 ");
#endif
WiFi.begin("SSID 2", "PWD 2");
}
bytC = 0;
while (WiFi.status() != WL_CONNECTED && bytC < 32)
{
#ifdef WIFI_DEBUG
Serial.print(".");
#endif
bytC++;
delay(500);
}
if (WiFi.status() == WL_CONNECTED) break;
#ifdef WIFI_DEBUG
Serial.println("\r\n");
#endif
}
if (WiFi.status() == WL_CONNECTED)
{
#ifdef WIFI_DEBUG
Serial.println("Connected");
#endif
bytC = 0;
while (bytC < 10 && getInitialTimeFromServer() == false)
{
bytC++;
delay(500);
}
if (bytC < 10)
blnRetVal = true;
}
else
{
#ifdef WIFI_DEBUG
Serial.println("WiFi NOT connected");
#endif
}
return blnRetVal;
}