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https://github.com/m5stack/M5Stack.git
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55 lines
2.4 KiB
Arduino
55 lines
2.4 KiB
Arduino
/*
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*******************************************************************************
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* Copyright (c) 2023 by M5Stack
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* Equipped with M5Core sample source code
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* 配套 M5Core 示例源代码
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* Visit for more information: https://docs.m5stack.com/en/core/gray
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* 获取更多资料请访问: https://docs.m5stack.com/zh_CN/core/gray
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*
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* Describe: Wifi scan. wifi扫描
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* Date: 2021/7/28
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*******************************************************************************
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*/
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#include <M5Stack.h>
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#include "WiFi.h"
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void setup() {
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M5.begin(); // Init M5Stack. 初始化M5Stack
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M5.Power.begin(); // Init power 初始化电源模块
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WiFi.mode(WIFI_STA); // Set WiFi to station mode and disconnect from an AP
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// if it was previously connected.
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// 将WiFi设置为站模式，如果之前连接过AP，则断开连接
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WiFi.disconnect(); // Turn off all wifi connections. 关闭所有wifi连接
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delay(100); // 100 ms delay. 延迟100ms
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M5.Lcd.print("WIFI SCAN"); // Screen print string. 屏幕打印字符串
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}
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void loop() {
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M5.Lcd.setCursor(0, 0); // Set the cursor at (0,0). 将光标设置在(0,0)处
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M5.Lcd.println("Please press Btn.A to (re)scan");
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M5.update(); // Check the status of the key. 检测按键的状态
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if (M5.BtnA.isPressed()) { // If button A is pressed. 如果按键A按下
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M5.Lcd.clear(); // Clear the screen. 清空屏幕
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M5.Lcd.println("scan start");
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int n = WiFi.scanNetworks(); // return the number of networks found.
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// 返回发现的网络数
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if (n == 0) { // If no network is found. 如果没有找到网络
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M5.Lcd.println("no networks found");
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} else { // If have network is found. 找到网络
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M5.Lcd.printf("networks found:%d\n\n", n);
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for (int i = 0; i < n;
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++i) { // Print SSID and RSSI for each network found.
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// 打印每个找到的网络的SSID和信号强度
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M5.Lcd.printf("%d:", i + 1);
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M5.Lcd.print(WiFi.SSID(i));
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M5.Lcd.printf("(%d)", WiFi.RSSI(i));
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M5.Lcd.println(
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(WiFi.encryptionType(i) == WIFI_AUTH_OPEN) ? " " : "*");
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delay(10);
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}
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}
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delay(1000);
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}
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}
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