Network discovery not working for Raspberry Pi Pico and Pico2

[ullibak]

Hi
When using NetWizard with a Raspberry Pi Pico, the network discovery does not work. The list on the captive page stays empty. This is the code I am using:

#include <WebServer.h>
#include <NetWizard.h>

WebServer server(80);

// Initialize NetWizard
NetWizard NW(&server);

void setup() {
  delay(3000);
  Serial.begin(115200);
  Serial.println("Starting NetWizard Demo...");

  // Start NetWizard
  NW.autoConnect("My Network", "12345678");
  
  // Check if configured
  if (NW.isConfigured()) {
    Serial.println("Device is configured");
  } else {
    Serial.println("Device is not configured!");
  }
}

void loop() {
  NW.loop();
}

When looking at the code starting at line 934 in NetWizard.cpp, I suppose that there is a "_restartScan()" missing.

      // return scan data
      int16_t n = WiFi.scanComplete();
      #if defined(ESP8266) || defined(ESP32)
        if (n == WIFI_SCAN_RUNNING) {
          _server->send(202, "application/json", "[]");
          return _server->client().stop(); // Stop is needed because we sent no content length
        } else if (n == WIFI_SCAN_FAILED) {
          // restart scan
          _restartScan();   // <--------------------------- restart scan here when scan yields no result
          _server->send(202, "application/json", "[]");
          return _server->client().stop(); // Stop is needed because we sent no content length
      #elif defined (TARGET_RP2040) || defined(TARGET_RP2350) || defined(PICO_RP2040) || defined(PICO_RP2350)
        if (!n) {             // <--------------------------- no restart scan here when scan yields no result
       _server->send(202, "application/json", "[]");
        return _server->client().stop(); // Stop is needed because we sent no content length
      #endif
      } else {
        // serialize scan data
        String output;
        _generateScanJson(output);
        // restart scan
        _restartScan();
        return _server->send(200, "application/json", output);
      }
    }).setFilter(this->_onAPFilter);

So I added "_restartScan()" before "_server->send..." in order to copy the logic of the code for ESP8266 and ESP32 to the code for the RP2040 and RP2350 devices.

With this modification, the networks appear on the list and the list ist constantly updated. But after about 4 updates, the program freezes. You can scroll up and down the networks list on the captive page, but you can not select a network or even press the "Skip" button.

Could you please have a look at this?

Thanks!

[Zoliex]

Hi, any updates ?