WiFi.scanNetworks() does not work with last version of repository #758
Description
Hardware:
Board: ESP32 Dev Module
Core Installation/update date: Clean install on Windows 10 - October 21 2017
IDE name: Arduino IDE
Flash Frequency: 40 and 80Mhz tried
Upload Speed: 921600?
Description:
After doing a clean install of the the latest arduino-esp32 the WiFi.scanNetworks() function does not work any more in my program so I tried the ESP32 WiFIScan.ino example and the serial monitor reports:
scan start
scan done
no networks found
It worked correctly in an earlier version of arduino-esp32 (version of approximately 2 weeks ago)
Sketch:
WiFIScan.ino
/*
* This sketch demonstrates how to scan WiFi networks.
* The API is almost the same as with the WiFi Shield library,
* the most obvious difference being the different file you need to include:
*/
#include "WiFi.h"
void setup()
{
Serial.begin(115200);
// Set WiFi to station mode and disconnect from an AP if it was previously connected
WiFi.mode(WIFI_STA);
WiFi.disconnect();
delay(100);
Serial.println("Setup done");
}
void loop()
{
Serial.println("scan start");
// WiFi.scanNetworks will return the number of networks found
int n = WiFi.scanNetworks();
Serial.println("scan done");
if (n == 0) {
Serial.println("no networks found");
} else {
Serial.print(n);
Serial.println(" networks found");
for (int i = 0; i < n; ++i) {
// Print SSID and RSSI for each network found
Serial.print(i + 1);
Serial.print(": ");
Serial.print(WiFi.SSID(i));
Serial.print(" (");
Serial.print(WiFi.RSSI(i));
Serial.print(")");
Serial.println((WiFi.encryptionType(i) == WIFI_AUTH_OPEN)?" ":"*");
delay(10);
}
}
Serial.println("");
// Wait a bit before scanning again
delay(5000);
}
Debug Messages:
[D][WiFiGeneric.cpp:265] _eventCallback(): Event: 1 - SCAN_DONE