arduino - ameba - wifi scan

git : https://github.com/neojou/arduino-ameba.git

如 Ameba WiFi 描述
Ameba IC 本身含有 wifi, 並不需要另外加 wifi shield.
所以並不需要 SPI.h 和 SPI 相關介面處理


wifi scan example :

從 1.0.6 板之後, 可以從 library 的範例程式拉出來, 直接執行 ( ScanNetworks )
https://github.com/neojou/arduino-ameba/tree/master/hardware/libraries/WiFi/examples/ScanNetworks

MAC address : 屬於網路 OSI 第二層. 每個網路設備需要有一個專屬的 MAC 地址

void printMacAddress() {
	// the MAC address of your Wifi shield
	byte mac[6];
	// print your MAC address:
	WiFi1.macAddress(mac);
	Serial.print("MAC: ");
	Serial.print(mac[5],HEX);
	Serial.print(":");
	Serial.print(mac[4],HEX);
	Serial.print(":");
	Serial.print(mac[3],HEX);
	Serial.print(":");
	Serial.print(mac[2],HEX);
	Serial.print(":");
	Serial.print(mac[1],HEX);
	Serial.print(":");
	Serial.println(mac[0],HEX);
	}

Scan :

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));
	}
	}

AP 是否加密

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;
	}
	}

--
執行結果, 每 10 秒會重新 scan 一次.

Scanning available networks...
** Scan Networks **
number of available networks:9
0) BBHOME163594 Signal: -70 dBm Encryption: WPA2
1) alexanny_2G  Signal: -74 dBm Encryption: WPA2
2) B3504X       Signal: -88 dBm Encryption: WPA2
3) KUO-HOME     Signal: -82 dBm Encryption: WPA
4) NAN SHAN     Signal: -91 dBm Encryption: WPA2
5) billwang     Signal: -66 dBm Encryption: WPA2
6) snowdragon   Signal: -51 dBm Encryption: WPA2
7) MA   Signal: -71 dBm Encryption: WPA2
8) DSL-7740C    Signal: -80 dBm Encryption: WPA2

Scanning available networks...
** Scan Networks **
number of available networks:11
0) BBHOME163594 Signal: -71 dBm Encryption: WPA2
1) alexanny_2G  Signal: -74 dBm Encryption: WPA2
2) B3504X       Signal: -88 dBm Encryption: WPA2
3) KUO-HOME     Signal: -82 dBm Encryption: WPA
4) billwang     Signal: -65 dBm Encryption: WPA2
5) snowdragon   Signal: -58 dBm Encryption: WPA2
6) MA   Signal: -72 dBm Encryption: WPA2
7) DSL-7740C    Signal: -81 dBm Encryption: WPA2
8) DSL-7740C    Signal: -96 dBm Encryption: WPA2
9) Malcolm_ASUS Signal: -91 dBm Encryption: WPA2
10) NAN SHAN    Signal: -92 dBm Encryption: WPA2

Scanning available networks...
** Scan Networks **
number of available networks:13
0) BBHOME163594 Signal: -72 dBm Encryption: WPA2
1) B3504X       Signal: -88 dBm Encryption: WPA2
2) KUO-HOME     Signal: -82 dBm Encryption: WPA
3) billwang     Signal: -64 dBm Encryption: WPA2
4) snowdragon   Signal: -56 dBm Encryption: WPA2
5) MA   Signal: -70 dBm Encryption: WPA2
6) DSL-7740C    Signal: -79 dBm Encryption: WPA2
7) DSL-7740C    Signal: -96 dBm Encryption: WPA2
8) Malcolm_ASUS Signal: -91 dBm Encryption: WPA2
9) NAN SHAN     Signal: -92 dBm Encryption: WPA2
10) QEF Signal: -92 dBm Encryption: WPA
11) WiFi8781    Signal: -92 dBm Encryption: WPA2
12) yuchen      Signal: -86 dBm Encryption: WPA

-- 相關 Arduino wifi API :

Arduino API : macAddress()

https://www.arduino.cc/en/Reference/WiFiMACAddress


Arduino API : scanNetworks()

https://www.arduino.cc/en/Reference/WiFiScanNetworks


另外官網原本的教學 :

https://www.arduino.cc/en/Tutorial/ScanNetworks