STM32F4 Black-pill: WiFi shield (WiFiNINA)

/*
 * This example check if the firmware loaded on the NINA module
 * is updated.
 *
 * modified by Renzo Mischianti <www.mischianti.org>
 *
 * www.mischianti.org
 *
 */
#include <SPI.h>
#include <WiFiNINA.h>

#define SPIWIFI       SPI  // The SPI port
#define SPIWIFI_SS    PA4   // Chip select pin
#define ESP32_RESETN  PA2   // Reset pin
#define SPIWIFI_ACK   PA3   // a.k.a BUSY or READY pin
#define ESP32_GPIO0   -1

void setup() {
  // Initialize serial
  Serial.begin(9600);
  while (!Serial) {
    ; // wait for serial port to connect. Needed for native USB port only
  }

  // Print a welcome message
  Serial.println("WiFiNINA firmware check.");
  Serial.println();

  // Set up the pins!
  WiFi.setPins(SPIWIFI_SS, SPIWIFI_ACK, ESP32_RESETN, ESP32_GPIO0, &SPIWIFI);

  // check for the WiFi module:
  if (WiFi.status() == WL_NO_MODULE) {
    Serial.println("Communication with WiFi module failed!");
    // don't continue
    while (true);
  }

  // Print firmware version on the module
  String fv = WiFi.firmwareVersion();
  String latestFv;
  Serial.print("Firmware version installed: ");
  Serial.println(fv);

  latestFv = WIFI_FIRMWARE_LATEST_VERSION;

  // Print required firmware version
  Serial.print("Latest firmware version available : ");
  Serial.println(latestFv);

  // Check if the latest version is installed
  Serial.println();
  if (fv >= latestFv) {
    Serial.println("Check result: PASSED");
  } else {
    Serial.println("Check result: NOT PASSED");
    Serial.println(" - The firmware version on the module do not match the");
    Serial.println("   version required by the library, you may experience");
    Serial.println("   issues or failures.");
  }
}

void loop() {
  // do nothing
}

#define SPIWIFI_SS    PB0   // Chip select pin

Firmware version installed: 1.7.4
Latest firmware version available : 1.2.1

Check result: PASSED

/*

 This example  prints the board's MAC address, and
 scans for available Wifi networks using the NINA module.
 Every ten seconds, it scans again. It doesn't actually
 connect to any network, so no encryption scheme is specified.

 Circuit:
 * Board with NINA firmware on it (In this case its an Adafruit AirLift)

 created 13 July 2010
 by dlf (Metodo2 srl)
 modified 21 Junn 2012
 by Tom Igoe and Jaymes Dec
 modified 17 May 2022
 by Renzo Mischianti

 */


#include <SPI.h>
#include <WiFiNINA.h>

#define SPIWIFI       SPI  // The SPI port
#define SPIWIFI_SS    PA4   // Chip select pin
#define ESP32_RESETN  PA2   // Reset pin
#define SPIWIFI_ACK   PA3   // a.k.a BUSY or READY pin
#define ESP32_GPIO0   -1

void printMacAddress(byte mac[]);
void printEncryptionType(int thisType);
void listNetworks();

void setup() {
  //Initialize serial and wait for port to open:
  Serial.begin(9600);
  while (!Serial) {
    ; // wait for serial port to connect. Needed for native USB port only
  }

  Serial.println("WiFi Scanning test");

  // Set up the pins!
  WiFi.setPins(SPIWIFI_SS, SPIWIFI_ACK, ESP32_RESETN, ESP32_GPIO0, &SPIWIFI);

  // check for the WiFi module:
  while (WiFi.status() == WL_NO_MODULE) {
    Serial.println("Communication with WiFi module failed!");
    // don't continue
    delay(10000);
  }
  String fv = WiFi.firmwareVersion();
  Serial.println(fv);
  if (fv < "1.0.0") {
    Serial.println("Please upgrade the firmware");
    while (1) delay(10);
  }
  Serial.println("Firmware OK");

  // print your MAC address:
  byte mac[6];
  WiFi.macAddress(mac);
  Serial.print("MAC: ");
  printMacAddress(mac);
}

void loop() {
  // scan for existing networks:
  Serial.println("Scanning available networks...");
  listNetworks();
  delay(10000);
}

void listNetworks() {
  // scan for nearby networks:
  Serial.println("** Scan Networks **");
  int numSsid = WiFi.scanNetworks();
  if (numSsid == -1) {
    Serial.println("Couldn't get a wifi connection");
    while (true);
  }

  // print the list of networks seen:
  Serial.print("number of available networks:");
  Serial.println(numSsid);

  // print the network number and name for each network found:
  for (int thisNet = 0; thisNet < numSsid; thisNet++) {
    Serial.print(thisNet);
    Serial.print(") ");
    Serial.print(WiFi.SSID(thisNet));
    Serial.print("\tSignal: ");
    Serial.print(WiFi.RSSI(thisNet));
    Serial.print(" dBm");
    Serial.print("\tEncryption: ");
    printEncryptionType(WiFi.encryptionType(thisNet));
  }
}

void printEncryptionType(int thisType) {
  // read the encryption type and print out the name:
  switch (thisType) {
    case ENC_TYPE_WEP:
      Serial.println("WEP");
      break;
    case ENC_TYPE_TKIP:
      Serial.println("WPA");
      break;
    case ENC_TYPE_CCMP:
      Serial.println("WPA2");
      break;
    case ENC_TYPE_NONE:
      Serial.println("None");
      break;
    case ENC_TYPE_AUTO:
      Serial.println("Auto");
      break;
    case ENC_TYPE_UNKNOWN:
    default:
      Serial.println("Unknown");
      break;
  }
}


void printMacAddress(byte mac[]) {
  for (int i = 5; i >= 0; i--) {
    if (mac[i] < 16) {
      Serial.print("0");
    }
    Serial.print(mac[i], HEX);
    if (i > 0) {
      Serial.print(":");
    }
  }
  Serial.println();
}

Scanning available networks...
** Scan Networks **
number of available networks:6
0) reef-casa-sopra	Signal: -49 dBm	Encryption: WPA2
1) reef-casa-orto	Signal: -69 dBm	Encryption: WPA2
2) reef-casa-centro	Signal: -78 dBm	Encryption: WPA2
3) reef-casa-centro	Signal: -83 dBm	Encryption: WPA2
4) reef-casa-sotto	Signal: -87 dBm	Encryption: WPA2
5) TIM-18355607	Signal: -91 dBm	Encryption: WPA2