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wifi based on closest AP

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This commit is contained in:
Matthew Frost 2023-11-20 17:41:10 +01:00
parent fc287d668c
commit 4b4d6f5870
1 changed files with 66 additions and 22 deletions
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88
src/main.cpp
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@ -13,36 +13,80 @@ unsigned int maxReaderWaitTime = 9000; // Variable to timeout reader after too
#endif
#ifdef WIFI
void connectToWiFi() {
WiFi.mode(WIFI_STA);
WiFi.begin(ssid, password);
int numNetworks = WiFi.scanNetworks();
int strongestSignal = -100; // Initialize with a low signal strength
int strongestIndex = -1; // Index of the strongest access point
#ifdef SERIAL_DEBUG
Serial.print("Connecting to WiFi ..");
Serial.println("Scan complete");
Serial.print(numNetworks);
Serial.println(" networks found");
if (numNetworks > 0) {
Serial.println("Strongest networks:");
for (int i = 0; i < numNetworks; i++) {
String currentSSID = WiFi.SSID(i);
int currentSignal = WiFi.RSSI(i);
Serial.print(i + 1);
Serial.print(": ");
Serial.print(currentSSID);
Serial.print(" (");
Serial.print(currentSignal);
Serial.println(" dBm)");
}
}
#endif
unsigned long startTime = millis(); // Record the start time of connection
for (int i = 0; i < numNetworks; i++) {
String currentSSID = WiFi.SSID(i);
int currentSignal = WiFi.RSSI(i);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
#ifdef SERIAL_DEBUG
Serial.print(".");
#endif
// Check if it's time to reboot
if (millis() - startTime >= wifiRebootTimeout) { // Reboot after 20 seconds
#ifdef SERIAL_DEBUG
Serial.println("\nFailed to connect. Rebooting...");
#endif
ESP.restart(); // Reboot the Arduino board
if (currentSSID.equals(ssid) && currentSignal > strongestSignal) {
strongestSignal = currentSignal;
strongestIndex = i;
}
}
#ifdef SERIAL_DEBUG
Serial.println("WiFi connected");
#endif
if (strongestIndex != -1) {
WiFi.mode(WIFI_STA);
WiFi.begin(ssid, password);
#ifdef SERIAL_DEBUG
Serial.print("Connecting to WiFi ");
Serial.print(ssid);
Serial.print(" (Signal Strength: ");
Serial.print(strongestSignal);
Serial.println(" dBm)...");
#endif
unsigned long startTime = millis(); // Record the start time of connection
while (WiFi.status() != WL_CONNECTED) {
delay(500);
#ifdef SERIAL_DEBUG
Serial.print(".");
#endif
// Check if it's time to reboot
if (millis() - startTime >= wifiRebootTimeout) { // Reboot after 20 seconds
#ifdef SERIAL_DEBUG
Serial.println("\nFailed to connect. Rebooting...");
#endif
ESP.restart(); // Reboot the Arduino board
}
}
#ifdef SERIAL_DEBUG
Serial.println("WiFi connected");
#endif
} else {
#ifdef SERIAL_DEBUG
Serial.println("No access point with SSID " + String(ssid) + " found");
#endif
}
}
void GetWifiInfo(){