WIFI

请在使用前加载库 #include <WiFi.h>

WiFi.softAP()

功能说明:

开启AP模式,开启成功返回真

函数原型:

bool softAP(const char* ssid, const char* passphrase = NULL, int channel = 1, int ssid_hidden = 0, int max_connection = 4)

参数	描述	类型
ssid	AP名称 0~32个字节	const char*
passphrase	密码 8~63个字节或 NULL	const char*
channel	信道	int
ssid_hidden	是否隐藏SSID 1:隐藏 0:不隐藏	int
max_conncetion	最大连接数量1~4	int

案例程序:

#include <M5Stack.h>
#include <WiFi.h>

void setup() {
    M5.begin();
    M5.Power.begin();
    M5.Lcd.setTextSize(2);
}
void loop() {
    if (WiFi.softAP("M5Stack_AP", "12345678", 1, 0, 4)) {
        M5.Lcd.println("WiFi AP is set up");
        M5.Lcd.println(WiFi.softAPIP());
    } else {
        M5.Lcd.println("WiFi AP is down");
    }
    delay(1000);
}

WiFi.softAPConfig()

功能说明:

设置AP的IP地址

函数原型:

bool softAPConfig(IPAddress local_ip, IPAddress gateway, IPAddress subnet)

参数	描述	类型
local_ip	默认本地IP 192.168.4.1	IPAddress
gateway	默认网关 192.168.4.1	IPAddress
subnet	默认子网掩码 255.255.255.0	IPAddress

案例程序:

#include <M5Stack.h>
#include <WiFi.h>

IPAddress local_IP(192, 168, 4,22);  // Manually set the ip address of the open network. 手动设置的开启的网络的ip地址
IPAddress gateway(192, 168, 4,9);  // Manually set gateway IP address. 手动设置的网关IP地址
IPAddress subnet(255, 255, 255,0);  // Manually set subnet mask. 手动设置的子网掩码

void setup() {
    M5.begin();
    M5.Power.begin();
    M5.Lcd.setTextSize(2);
}
void loop() {
    if (WiFi.softAP("M5Stack_AP", "12345678", 1, 0, 4)) {
        M5.Lcd.println("WiFi AP is set up");
        M5.Lcd.println(WiFi.softAPIP());
        delay(300);
        WiFi.softAPConfig(local_IP, gateway, subnet);
    } else {
        M5.Lcd.println("WiFi AP is down");
    }
    delay(1000);
}

WiFi.softAPdisconnect()

功能说明:

关闭当前AP,wifioff设置为true则还原网络设置

函数原型:

bool softAPdisconnect(bool wifioff = false)

参数	描述	类型
wifioff	还原设置	bool

案例程序:

#include <M5Stack.h>
#include <WiFi.h>

void setup() {
    M5.begin();
    M5.Power.begin();
    M5.Lcd.setTextSize(2);
}
void loop() {
    if (WiFi.softAP("M5Stack_AP", "12345678", 1, 0, 4)) {
        M5.Lcd.println("WiFi AP is set up");
        M5.Lcd.println(WiFi.softAPIP());
        delay(1000);
        if (WiFi.softAPdisconnect()) {  //Turn off the current AP and restore the network settings.  关闭当前AP,并还原网络设置
            M5.Lcd.println("WiFi AP is closed");
            delay(5000);
        }
    } else {
        M5.Lcd.println("WiFi AP is down");
    }
    delay(1000);
}

WiFi.softAPgetStationNum()

功能说明:

返回连接到AP的客户端数量

函数原型:

uint8_t softAPgetStationNum()

案例程序:

#include <M5Stack.h>
#include <WiFi.h>

void setup() {
    M5.begin();
    M5.Power.begin();
    M5.Lcd.setTextSize(2);
}
void loop() {
    if (WiFi.softAP("M5Stack_AP", "12345678", 1, 0, 4)) {
        M5.Lcd.println("WiFi AP is set up");
        M5.Lcd.printf("Number of AP connections:%d",WiFi.softAPgetStationNum());
    } else {
        M5.Lcd.println("WiFi AP is down");
    }
    delay(1000);
}

WiFi.softAPIP()

功能说明:

返回当前AP的IP地址

函数原型:

IPAddress softAPIP()

案例程序:

#include <M5Stack.h>
#include <WiFi.h>

void setup() {
    M5.begin();
    M5.Power.begin();
    M5.Lcd.setTextSize(2);
}
void loop() {
    if (WiFi.softAP("M5Stack_AP", "12345678", 1, 0, 4)) {
        M5.Lcd.println("WiFi AP is set up");
        M5.Lcd.println(WiFi.softAPIP());
    } else {
        M5.Lcd.println("WiFi AP is down");
    }
    delay(1000);
}

WiFi.softAPsetHostname()

功能说明:

设置主机名称,成功返回真

函数原型:

bool softAPsetHostname(const char * hostname)

参数	描述	类型
hostname	主机名称	const char*

案例程序:

#include <M5Stack.h>
#include <WiFi.h>

void setup() {
    M5.begin();
    M5.Power.begin();
    M5.Lcd.setTextSize(2);
}
void loop() {
    if (WiFi.softAP("M5Stack_AP", "12345678", 1, 0, 4)) {
        M5.Lcd.println("WiFi AP is set up");
        M5.Lcd.printf("Host name:%s\n", WiFi.softAPgetHostname());
        delay(1000);
        WiFi.softAPsetHostname("M5_AP");
        M5.Lcd.printf("After Host name:%s\n", WiFi.softAPgetHostname());
    } else {
        M5.Lcd.println("WiFi AP is down");
    }
    delay(1000);
}

WiFi.softAPgetHostname()

功能说明:

获得主机名称

函数原型:

const char * softAPgetHostname()

案例程序:

#include <M5Stack.h>
#include <WiFi.h>

void setup() {
    M5.begin();
    M5.Power.begin();
    M5.Lcd.setTextSize(2);
}
void loop() {
    if (WiFi.softAP("M5Stack_AP", "12345678", 1, 0, 4)) {
        M5.Lcd.println("WiFi AP is set up");
        M5.Lcd.printf("Host name:%s", WiFi.softAPgetHostname());
    } else {
        M5.Lcd.println("WiFi AP is down");
    }
    delay(1000);
}

WiFi.softAPmacAddress()

功能说明:

返回主机 MAC 地址

函数原型:

String softAPmacAddress(void)

案例程序:

#include <M5Stack.h>
#include <WiFi.h>

void setup() {
    M5.begin();
    M5.Power.begin();
    M5.Lcd.setTextSize(2);
}
void loop() {
    if (WiFi.softAP("M5Stack_AP", "12345678", 1, 0, 4)) {
        M5.Lcd.println("WiFi AP is set up");
        M5.Lcd.print("MAC:");
        M5.Lcd.println(WiFi.softAPmacAddress());
    } else {
        M5.Lcd.println("WiFi AP is down");
    }
    delay(1000);
}

WiFi.begin()

功能说明:

接入指定网络(如果connect参数为真则接入网络;如果参数为假则只保存设置,返回wifi状态)

函数原型:

wl_status_t begin(const char* ssid, const char *passphrase = NULL, int32_t channel = 0, const uint8_t* bssid = NULL, bool connect = true)

参数	描述	类型
ssid	网络热点名称	const char*
passphrase	密码(可选)	const char*
channel	热点通道号(可选)	int32_t
bssid	热点的mac地址(可选)	const uint8_t*
connect	建立连接(可选)	bool

案例程序:

#include <M5Stack.h>
#include <WiFi.h>

// Fill in the hotspot name and password you are connected to.
// 填写你所连接的热点名称和密码
const char *ssid     = "yourNetwork";
const char *password = "'secretPassword";

void setup() {
    M5.begin();
    M5.Power.begin();
    M5.Lcd.setTextSize(2);
    WiFi.begin(ssid, password);
    while (WiFi.status() != WL_CONNECTED) {
        delay(500);
        M5.Lcd.print(".");
    }
    M5.Lcd.println("\nWiFi connected");
}
void loop() {}

WiFi.config()

功能说明:

配置网络地址

函数原型:

bool config(IPAddress local_ip, IPAddress gateway, IPAddress subnet, IPAddress dns1 = (uint32_t)0x00000000, IPAddress dns2 = (uint32_t)0x00000000)

参数	描述	类型
local_ip	设置IP	IPAddress
gateway	设置网关	IPAddress
subnet	设置子网掩码	IPAddress
dns1	设置DNS1	IPAddress
dns2	设置DNS2	IPAddress

WiFi.disconnect()

功能说明:

断开网络连接,若wifioff为true则还将还原网络设置,若eraseap为true则将清除保存于flash中的网络参数.

函数原型:

bool disconnect(bool wifioff = false, bool eraseap = false)

参数	描述	类型
wifioff	还原设置	bool
eraseap	flash清除AP设置	bool

案例程序:

#include <M5Stack.h>
#include <WiFi.h>

// Fill in the hotspot name and password you are connected to.
// 填写你所连接的热点名称和密码
const char *ssid     = "yourNetwork";
const char *password = "'secretPassword";

void setup() {
    M5.begin();
    M5.Power.begin();
    M5.Lcd.setTextSize(2);
    WiFi.begin(ssid, password);
    while (WiFi.status() != WL_CONNECTED) {
        delay(500);
        M5.Lcd.print(".");
    }
    M5.Lcd.println("\nWiFi connected");
    if(WiFi.disconnect(true, true)) {
        M5.Lcd.println("WiFi disconnected");
    }
}
void loop() {}

WiFi.isConnected()

功能说明:

返回网络连接状态

函数原型:

bool isConnected()

案例程序:

#include <M5Stack.h>
#include <WiFi.h>

// Fill in the hotspot name and password you are connected to.
// 填写你所连接的热点名称和密码
const char *ssid     = "yourNetwork";
const char *password = "'secretPassword";

void setup() {
    M5.begin();
    M5.Power.begin();
    M5.Lcd.setTextSize(2);
    WiFi.begin(ssid, password);
    while (WiFi.status() != WL_CONNECTED) {
        delay(500);
        M5.Lcd.print(".");
    }
    M5.Lcd.println("\nWiFi connected");
    M5.Lcd.print(WiFi.isConnected());
}
void loop() {}

WiFi.setAutoReconnect()

功能说明:

设置自动重连.

函数原型:

bool setAutoReconnect(bool autoReconnect)

案例程序:

#include <M5Stack.h>
#include <WiFi.h>

// Fill in the hotspot name and password you are connected to.
// 填写你所连接的热点名称和密码
const char *ssid     = "yourNetwork";
const char *password = "'secretPassword";

void setup() {
    M5.begin();
    M5.Power.begin();
    M5.Lcd.setTextSize(2);
    if(WiFi.setAutoReconnect(true)) {
        M5.Lcd.println("Whether it has been set successfully to automatically reconnect");
    }
    WiFi.begin(ssid, password);
    while (WiFi.status() != WL_CONNECTED) {
        delay(500);
        M5.Lcd.print(".");
    }
    M5.Lcd.println("\nWiFi connected");
}
void loop() {}

WiFi.getAutoReconnect()

功能说明:

返回是否重新连接

函数原型:

bool getAutoReconnect()

WiFi.localIP()

功能说明:

返回本地IP地址

函数原型:

IPAddress localIP()

案例程序:

#include <M5Stack.h>
#include <WiFi.h>

// Fill in the hotspot name and password you are connected to.
// 填写你所连接的热点名称和密码
const char *ssid     = "yourNetwork";
const char *password = "'secretPassword";

void setup() {
    M5.begin();
    M5.Power.begin();
    M5.Lcd.setTextSize(2);
    WiFi.begin(ssid, password);
    while (WiFi.status() != WL_CONNECTED) {
        delay(500);
        M5.Lcd.print(".");
    }
    M5.Lcd.println("\nWiFi connected");
    M5.Lcd.print("IP:");
    M5.Lcd.print(WiFi.localIP());
}
void loop() {}

WiFi.subnetMask()

功能说明:

返回子网掩码

函数原型:

IPAddress subnetMask()

案例程序:

#include <M5Stack.h>
#include <WiFi.h>

// Fill in the hotspot name and password you are connected to.
// 填写你所连接的热点名称和密码
const char *ssid     = "yourNetwork";
const char *password = "'secretPassword";

void setup() {
    M5.begin();
    M5.Power.begin();
    M5.Lcd.setTextSize(2);
    WiFi.begin(ssid, password);
    while (WiFi.status() != WL_CONNECTED) {
        delay(500);
        M5.Lcd.print(".");
    }
    M5.Lcd.println("\nWiFi connected");
    M5.Lcd.print("subnetMask:");
    M5.Lcd.print(WiFi.subnetMask());
}

void loop() {}

WiFi.gatewayIP()

功能说明:

返回网关地址

函数原型:

IPAddress gatewayIP()

案例程序:

#include <M5Stack.h>
#include <WiFi.h>

// Fill in the hotspot name and password you are connected to.
// 填写你所连接的热点名称和密码
const char *ssid     = "yourNetwork";
const char *password = "'secretPassword";

void setup() {
    M5.begin();
    M5.Power.begin();
    M5.Lcd.setTextSize(2);
    WiFi.begin(ssid, password);
    while (WiFi.status() != WL_CONNECTED) {
        delay(500);
        M5.Lcd.print(".");
    }
    M5.Lcd.println("\nWiFi connected");
    M5.Lcd.print("gatewayIP:");
    M5.Lcd.print(WiFi.gatewayIP());
}

void loop() {}

WiFi.dnsIP()

功能说明:

返回DNS地址

函数原型:

IPAddress dnsIP(uint8_t dns_no = 0)

案例程序:

#include <M5Stack.h>
#include <WiFi.h>

// Fill in the hotspot name and password you are connected to.
// 填写你所连接的热点名称和密码
const char *ssid     = "yourNetwork";
const char *password = "'secretPassword";

void setup() {
    M5.begin();
    M5.Power.begin();
    M5.Lcd.setTextSize(2);
    WiFi.begin(ssid, password);
    while (WiFi.status() != WL_CONNECTED) {
        delay(500);
        M5.Lcd.print(".");
    }
    M5.Lcd.println("\nWiFi connected");
    M5.Lcd.print("dnsIP:");
    M5.Lcd.print(WiFi.dnsIP());
}

void loop() {}

WiFi.macAddress()

功能说明:

返回mac地址

函数原型:

String macAddress()

案例程序:

#include <M5Stack.h>
#include <WiFi.h>

// Fill in the hotspot name and password you are connected to.
// 填写你所连接的热点名称和密码
const char *ssid     = "yourNetwork";
const char *password = "'secretPassword";

void setup() {
    M5.begin();
    M5.Power.begin();
    M5.Lcd.setTextSize(2);
    WiFi.begin(ssid, password);
    while (WiFi.status() != WL_CONNECTED) {
        delay(500);
        M5.Lcd.print(".");
    }
    M5.Lcd.println("\nWiFi connected");
    M5.Lcd.print("macAddress:");
    M5.Lcd.print(WiFi.macAddress());
}

void loop() {}

WiFi.getHostname()

功能说明:

主机名称

函数原型:

const char * getHostname()

案例程序:

#include <M5Stack.h>
#include <WiFi.h>

// Fill in the hotspot name and password you are connected to.
// 填写你所连接的热点名称和密码
const char *ssid     = "yourNetwork";
const char *password = "'secretPassword";

void setup() {
    M5.begin();
    M5.Power.begin();
    M5.Lcd.setTextSize(2);
    WiFi.begin(ssid, password);
    while (WiFi.status() != WL_CONNECTED) {
        delay(500);
        M5.Lcd.print(".");
    }
    M5.Lcd.println("\nWiFi connected");
    M5.Lcd.print("getHostname:");
    M5.Lcd.print(WiFi.getHostname());
}

void loop() {}

WiFi.status()

功能说明:

返回WiFi状态

函数原型:

wl_status_t status()

返回值

值	描述
255	WL_NO_SHIELD 检查WiFi Shield
0	WL_IDLE_STATUS 正在WiFi工作模式间切换
1	WL_NO_SSID_AVAIL 无法访问设置的SSID网络
2	WL_SCAN_COMPLETED 扫描完成
3	WL_CONNECTED 连接成功
4	WL_CONNECT_FAILED 连接失败
5	WL_CONNECTION_LOST 丢失连接
6	WL_DISCONNECTED 断开连接

案例程序:

#include <M5Stack.h>
#include <WiFi.h>

// Fill in the hotspot name and password you are connected to.
// 填写你所连接的热点名称和密码
const char *ssid     = "yourNetwork";
const char *password = "'secretPassword";

void setup() {
    M5.begin();
    M5.Power.begin();
    M5.Lcd.setTextSize(2);
    WiFi.begin(ssid, password);
    while (WiFi.status() != WL_CONNECTED) {
        delay(500);
        M5.Lcd.print(".");
    }
    M5.Lcd.println("\nWiFi connected");
}
void loop() {}

WiFi.scanNetworks()

功能说明:

扫描WiFi网络(默认状态下为阻塞模式)

函数原型:

int16_t scanNetworks(bool async = false, bool show_hidden = false, bool passive = false, uint32_t max_ms_per_chan = 300)

参数	类型	描述
async	bool	异步扫描 Wifi数量(非阻塞),值为true时启动
show_hidden	bool	是否扫描隐藏网络
passive	bool	快速扫描
max_ms_per_chan	uint32_t	通道扫描时间

案例程序:

#include <M5Stack.h>
#include <WiFi.h>

void setup() {
    M5.begin();
    M5.Power.begin();
    M5.Lcd.setTextSize(2);
    M5.Lcd.println("Scanning...");
    WiFi.scanNetworks();
    M5.Lcd.printf("wifi number:%d\n", WiFi.scanComplete());
}
void loop() {}

WiFi.scanComplete()

功能说明:

异步模式下获取扫描网络.返回值-1表示扫描未完成.返回值为-2表示扫描失败.

函数原型:

int16_t scanComplete()

案例程序:

#include <M5Stack.h>
#include <WiFi.h>

void setup() {
    M5.begin();
    M5.Power.begin();
    M5.Lcd.setTextSize(2);
    WiFi.scanNetworks(true);
    M5.Lcd.printf("Scanning...");
    while (WiFi.scanComplete() == WIFI_SCAN_RUNNING ||
           WiFi.scanComplete() == WIFI_SCAN_FAILED) {
        M5.Lcd.printf(".");
        delay(500);
    }
    M5.Lcd.printf("\nWiFi number:%d\n", WiFi.scanComplete());
}
void loop() {}

WiFi.SSID()

功能说明:

返回扫描到的网络.

函数原型:

String SSID(uint8_t networkItem)

参数	类型	描述
networkItem	uint8_t	SSID名称

案例程序:

#include <M5Stack.h>
#include <WiFi.h>

void setup() {
    M5.begin();
    M5.Power.begin();
    M5.Lcd.setTextSize(2);
    M5.Lcd.println("Scanning...");
    WiFi.scanNetworks();
    M5.Lcd.printf("wifi number:%d\n", WiFi.scanComplete());
    for (int i = 1; i < WiFi.scanComplete(); i++) {
        M5.Lcd.printf("%d:%s\n", i, WiFi.SSID(i).c_str());
    }
}
void loop() {}

WiFi.scanDelete()

功能说明:

从内存中删除扫描结果

函数原型:

void scanDelete()

案例程序:

#include <M5Stack.h>
#include <WiFi.h>

void setup() {
    M5.begin();
    M5.Power.begin();
    M5.Lcd.setTextSize(2);
    M5.Lcd.println("Scanning...");
    WiFi.scanNetworks();
    M5.Lcd.println("Scan complete");
    WiFi.scanDelete();
    M5.Lcd.println("Scan result deleted from memory");
}
void loop() {}

WiFi.encryptionType()

功能说明:

返回扫描到的加密网络

函数原型:

wifi_auth_mode_t encryptionType(uint8_t networkItem)

函数参数	类型	描述
networkItem	uint8_t	SSID名称

案例程序:

#include <M5Stack.h>
#include <WiFi.h>

void setup() {
    M5.begin();
    M5.Power.begin();
    M5.Lcd.setTextSize(2);
    M5.Lcd.println("Scanning...");
    WiFi.scanNetworks();
    M5.Lcd.printf("wifi number:%d\n", WiFi.scanComplete());
    for (int i = 1; i < WiFi.scanComplete(); i++) {  //开始逐个打印扫描到的
        M5.Lcd.printf("%d:", i);
        M5.Lcd.print(WiFi.SSID(i));
        M5.Lcd.print(",\t");
        M5.Lcd.println(
            (WiFi.encryptionType(i) == WIFI_AUTH_OPEN) ? "open" : "encryption");
        delay(10);
    }
}

void loop() {}

WiFi.RSSI()

功能说明:

返回扫描到的RSSI强度

函数原型:

int32_t RSSI(uint8_t networkItem)

参数	类型	描述
networkItem	uint8_t	RSSI item

案例程序:

#include <M5Stack.h>
#include <WiFi.h>

void setup() {
    M5.begin();
    M5.Power.begin();
    M5.Lcd.setTextSize(2);
    M5.Lcd.println("Scanning...");
    WiFi.scanNetworks();
    M5.Lcd.printf("wifi number:%d\n", WiFi.scanComplete());
    for (int i = 1; i < WiFi.scanComplete(); i++) {
        M5.Lcd.printf("%d:%s", i, WiFi.SSID(i).c_str());
        M5.Lcd.printf(" , %d\n", WiFi.RSSI(i));
    }
}
void loop() {}

WiFi.channel()

功能说明:

返回扫描到的网络通道号

函数原型:

int32_t channel(uint8_t networkItem)

参数	类型	描述
networkItem	uint8_t	channel item

案例程序:

#include <M5Stack.h>
#include <WiFi.h>

void setup() {
    M5.begin();
    M5.Power.begin();
    M5.Lcd.setTextSize(2);
    M5.Lcd.println("Scanning...");
    WiFi.scanNetworks();
    M5.Lcd.printf("wifi number:%d\n", WiFi.scanComplete());
    for (int i = 1; i < WiFi.scanComplete(); i++) {
        M5.Lcd.printf("%d:%s", i, WiFi.SSID(i).c_str());
        M5.Lcd.printf(" , %d\n", WiFi.channel(i));
    }
}
void loop() {}

1. Arduino Setup

4. Program & Upload

2. API & Examples

M5Core

M5Core2

M5CoreS3

M5Tough

M5Atom

M5AtomS3

M5Dial

M5Capsule

M5Cardputer

M5Paper

M5CoreInk

M5StickC

M5StickC Plus

M5StickCPlus2

M5TimerCAM

M5NanoC6

3. M5Unified & M5GFX

M5Unified

M5GFX

WIFI

WiFi.softAP()

WiFi.softAPConfig()

WiFi.softAPdisconnect()

WiFi.softAPgetStationNum()

WiFi.softAPIP()

WiFi.softAPsetHostname()

WiFi.softAPgetHostname()

WiFi.softAPmacAddress()

WiFi.begin()

WiFi.config()

WiFi.disconnect()

WiFi.isConnected()

WiFi.setAutoReconnect()

WiFi.getAutoReconnect()

WiFi.localIP()

WiFi.subnetMask()

WiFi.gatewayIP()

WiFi.dnsIP()

WiFi.macAddress()

WiFi.getHostname()

WiFi.status()

WiFi.scanNetworks()

WiFi.scanComplete()

WiFi.SSID()

WiFi.scanDelete()

WiFi.encryptionType()

WiFi.RSSI()

WiFi.channel()

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