【DigiKey“智造万物，快乐不停”创意大赛】智能家居中控屏 5. Wi-Fi模块制作

pomin · 发表于2023-12-28 00:03

【DigiKey“智造万物，快乐不停”创意大赛】智能家居中控屏 5. Wi-Fi模块制作 [复制链接]

> 智能家居设备，当然少不了联网的功能，本项目采用 Wi-Fi 无线连接到家庭网络。

### Wi-Fi 模块硬件设计

板卡上的 Wi-Fi 模块在全网到处搜罗也没有找到驱动的例程，但是 H7B3-DK 这个板卡支持 Arduino 的接口模块，所以自己画了一个 ESP32-S3 转 arduino 接口的扩展板，使用立创EDA 进行设计，USB、CH340自动下载电路和ESP32的模块，比较简单。

3D图：

<ignore_js_op>

<div class="tip tip_4 aimg_tip" id="aimg_768504_menu" style="position: absolute; display: none" disautofocus="true">
<div class="xs0">
<p><strong>Pasted image 20231227225748.png</strong> <em class="xg1">(71.75 KB, 下载次数: 0)</em></p>
<p>
<a href="javascript:;" class="loginf" >下载附件</a>

<a href="javascript:;" onclick="showWindow(this.id, this.getAttribute('url'), 'get', 0);" id="savephoto_768504" url="home.php?mod=spacecp&ac=album&op=saveforumphoto&aid=768504&handlekey=savephoto_768504">保存到相册</a>

</p>

</div>
<div class="tip_horn"></div>
</div>

</ignore_js_op>

打样的蓝色的阻焊，焊接好的实物图：

<ignore_js_op>

<a href="javascript:;" onclick="showWindow(this.id, this.getAttribute('url'), 'get', 0);" id="savephoto_768507" url="home.php?mod=spacecp&ac=album&op=saveforumphoto&aid=768507&handlekey=savephoto_768507">保存到相册</a>

</p>

</div>
<div class="tip_horn"></div>
</div>

</ignore_js_op>

测下功耗，大概300+mW，这功耗还是有点高的。

<ignore_js_op>

<a href="javascript:;" onclick="showWindow(this.id, this.getAttribute('url'), 'get', 0);" id="savephoto_768505" url="home.php?mod=spacecp&ac=album&op=saveforumphoto&aid=768505&handlekey=savephoto_768505">保存到相册</a>

</p>

</div>
<div class="tip_horn"></div>
</div>

</ignore_js_op>

装到板卡上，完美，用的是长脚的排母，可以插在板卡上面，同时也可以在这个模块上插另外的arduino接口的模块，主打一个无限套娃。

<ignore_js_op>

<a href="javascript:;" onclick="showWindow(this.id, this.getAttribute('url'), 'get', 0);" id="savephoto_768506" url="home.php?mod=spacecp&ac=album&op=saveforumphoto&aid=768506&handlekey=savephoto_768506">保存到相册</a>

</p>

</div>
<div class="tip_horn"></div>
</div>

</ignore_js_op>

AT固件操作起来STM32端程序太麻烦，所以准备直接在ESP32上面写程序，通过手机配置Wi-Fi信息、MQTT服务器的信息，然后存到EEPROM中，ESP32直接自动连接到Wi-Fi和服务器、自动进入透传模式即可。

因为需求比较简单，所以就直接使用arduino来进行开发，使用arduino ide 2来开发

<ignore_js_op>

<div class="tip tip_4 aimg_tip" id="aimg_768508_menu" style="position: absolute; display: none" disautofocus="true">
<div class="xs0">
<p><strong>Pasted image 20231227233006.png</strong> <em class="xg1">(138 KB, 下载次数: 0)</em></p>
<p>
<a href="javascript:;" class="loginf" >下载附件</a>

<a href="javascript:;" onclick="showWindow(this.id, this.getAttribute('url'), 'get', 0);" id="savephoto_768508" url="home.php?mod=spacecp&ac=album&op=saveforumphoto&aid=768508&handlekey=savephoto_768508">保存到相册</a>

</p>

</div>
<div class="tip_horn"></div>
</div>

</ignore_js_op>

代码如下

```c
#include <EEPROM.h>
#include <PubSubClient.h>
#include <WiFi.h>
#include <WiFiManager.h>

const char* mqtt_broker  = "192.168.0.200";
const char* mqtt_subscribe = "/pomin/mqtt/toMcu";
const char* mqtt_publish = "/pomin/mqtt";
const int mqtt_port = 1883;

WiFiClient espClient;
PubSubClient client(espClient);
WiFiManager wm;

/* EEPROM参数存储地址位 */
int wifi_addr = 10; /* 被写入数据的EEPROM地址编号 */
const char* wifi_config_ap = "HOME_CENTER";

struct config_type {
  char stassid[32]; /* 定义配网得到的WIFI名长度(最大32字节) */
  char stapsw[64];/* 定义配网得到的WIFI密码长度(最大64字节) */
};
config_type wificonf = { {""},{""} };

void saveParamCallback() {

}
/* wifi ssid，psw保存到eeprom */
void savewificonfig() {
  //开始写入
  char* p = (char*)(&wificonf);
  for (int i = 0; i < sizeof(wificonf); i++) {
  EEPROM.write(i + wifi_addr, *(p + i));
  }
  delay(10);
  if (EEPROM.commit()) {
  Serial.println("保存配置成功");
  } else {
  Serial.println("保存配置失败");
  }
  delay(10);
}
/* 删除原有eeprom中的信息 */
void deletewificonfig() {
  config_type deletewifi = { {""},{""} };
  char* p = (char*)(&deletewifi);
  for (int i = 0; i < sizeof(deletewifi); i++) {
  EEPROM.write(i + wifi_addr, *(p + i));
  }
  delay(10);
  if (EEPROM.commit()) {
  Serial.println("清空配置成功");
  } else {
  Serial.println("清空配置失败");
  }
  delay(10);
}
/* 从eeprom读取 WiFi信息ssid，psw */
void readwificonfig() {
  uint8_t* p = (uint8_t*)(&wificonf);
  for (int i = 0; i < sizeof(wificonf); i++) {
  *(p + i) = EEPROM.read(i + wifi_addr);
  }
  // EEPROM.commit();
  // ssid = wificonf.stassid;
  // pass = wificonf.stapsw;
  Serial.printf("读取WiFi配置.....\r\n");
  Serial.printf("SSID:%s\r\n",wificonf.stassid);
  Serial.printf("PSW:%s\r\n", wificonf.stapsw);
}
/* WEB配网 */
void Webconfig() {
  WiFi.mode(WIFI_STA); // explicitly set mode, esp defaults to STA+AP
  delay(3000);
  wm.resetSettings(); // wipe settings
  int customFieldLength = 40;
  wm.setSaveParamsCallback(saveParamCallback);
  std::vector<const char*> menu = { "wifi","restart" };
  wm.setMenu(menu);
  wm.setClass("invert");
  wm.setMinimumSignalQuality(20);// set min RSSI (percentage) to show in scans, null = 8%
  bool res;
  res = wm.autoConnect(wifi_config_ap); // anonymous ap
  while (!res);
}
void callback(char* topic, byte* payload, unsigned int length) {
  static bool sw = true;
  // Serial.print("收到消息, 来自: ");
  // Serial.println(topic);
  // Serial.print("消息:");
  for (int i = 0; i < length; i++) {
  Serial.print((char)payload<i>);
  }
  sw = !sw;
  if (sw) {
  digitalWrite(2, HIGH);
  } else {
  digitalWrite(2, LOW);
  }
  // Serial.println();
  // Serial.println("-----------------------");
}
void setup() {
  int load_timeout = 0;
  pinMode(2, OUTPUT);

Serial.begin(9600);
  EEPROM.begin(1024);
  Serial.println("\n------------------------");

readwificonfig();

WiFi.begin(wificonf.stassid, wificonf.stapsw);

while (WiFi.status() != WL_CONNECTED) {
  delay(500);
  load_timeout++;
  Serial.println("连接WiFi....");
  if (load_timeout > 120) {
    Serial.println("连接WiFi失败, 开启手动配置");
    Webconfig();
    break;
  }
  }
  if (WiFi.status() == WL_CONNECTED) {
  strcpy(wificonf.stassid, WiFi.SSID().c_str()); // 名称复制
  strcpy(wificonf.stapsw, WiFi.psk().c_str()); // 密码复制

savewificonfig();
  readwificonfig();

Serial.println("连接WiFi成功");

client.setServer(mqtt_broker, mqtt_port);
  client.setCallback(callback);
  while (!client.connected()) {
    Serial.println("连接mqtt服务器.....");
    if (client.connect("esp32-client")) {
      Serial.println("连接mqtt服务器成功");
      Serial.println("~~~~~~~~~~~~~~~~~~~~~~~");
    } else {
      Serial.print("连接mqtt服务器失败");
      Serial.print(client.state());
      delay(2000);
    }
  }
  /* 订阅主题 */
  // client.publish(mqtt_publish, "hello emqx");
  client.subscribe(mqtt_subscribe);
  }
}
int h = 0;
int times = 0;
void loop() {
  client.loop();
  /* 判读是否串口有数据 */
  if (Serial.available() > 0) {
  String comdata = "";
  while (Serial.available() > 0) {
    /* 叠加数据到comdata */
    comdata += char(Serial.read());
    delay(2);
  }
  /* 如果串口有数据 */
  if (comdata.length() > 0) {
    Serial.println(comdata);
    client.publish(mqtt_publish, comdata.c_str());
  }
  }
}

```

使用WiFiManager和EEPROM库来实现配置需要连接的 Wi-Fi

WiFiManager 的主界面，点击 Configure WiFi 即可开始配置 Wi-Fi

<ignore_js_op>

<div class="tip tip_4 aimg_tip" id="aimg_768512_menu" style="position: absolute; display: none" disautofocus="true">
<div class="xs0">
<p><strong>Screenshot_20231227_234647_mark.via.jpg</strong> <em class="xg1">(133.06 KB, 下载次数: 0)</em></p>
<p>
<a href="javascript:;" class="loginf" >下载附件</a>

<a href="javascript:;" onclick="showWindow(this.id, this.getAttribute('url'), 'get', 0);" id="savephoto_768512" url="home.php?mod=spacecp&ac=album&op=saveforumphoto&aid=768512&handlekey=savephoto_768512">保存到相册</a>

</p>

</div>
<div class="tip_horn"></div>
</div>

</ignore_js_op>

填入 SSID 和密码，然后保存，之后会自动重启

<ignore_js_op>

<div class="tip tip_4 aimg_tip" id="aimg_768511_menu" style="position: absolute; display: none" disautofocus="true">
<div class="xs0">
<p><strong>Screenshot_20231227_234816_mark.via.jpg</strong> <em class="xg1">(179.26 KB, 下载次数: 0)</em></p>
<p>
<a href="javascript:;" class="loginf" >下载附件</a>

<a href="javascript:;" onclick="showWindow(this.id, this.getAttribute('url'), 'get', 0);" id="savephoto_768511" url="home.php?mod=spacecp&ac=album&op=saveforumphoto&aid=768511&handlekey=savephoto_768511">保存到相册</a>

</p>

</div>
<div class="tip_horn"></div>
</div>

</ignore_js_op>

然后复位、查看串口输出的日志信息

<ignore_js_op>

<div class="tip tip_4 aimg_tip" id="aimg_768510_menu" style="position: absolute; display: none" disautofocus="true">
<div class="xs0">
<p><strong>Pasted image 20231227235253.png</strong> <em class="xg1">(3.28 KB, 下载次数: 0)</em></p>
<p>
<a href="javascript:;" class="loginf" >下载附件</a>

<a href="javascript:;" onclick="showWindow(this.id, this.getAttribute('url'), 'get', 0);" id="savephoto_768510" url="home.php?mod=spacecp&ac=album&op=saveforumphoto&aid=768510&handlekey=savephoto_768510">保存到相册</a>

</p>

</div>
<div class="tip_horn"></div>
</div>

</ignore_js_op>

在MQTT服务器端可以看到模块已经连接上了，显示 esp32-client

<ignore_js_op>

<div class="tip tip_4 aimg_tip" id="aimg_768509_menu" style="position: absolute; display: none" disautofocus="true">
<div class="xs0">
<p><strong>Pasted image 20231227235756.png</strong> <em class="xg1">(71.27 KB, 下载次数: 0)</em></p>
<p>
<a href="javascript:;" class="loginf" >下载附件</a>

<a href="javascript:;" onclick="showWindow(this.id, this.getAttribute('url'), 'get', 0);" id="savephoto_768509" url="home.php?mod=spacecp&ac=album&op=saveforumphoto&aid=768509&handlekey=savephoto_768509">保存到相册</a>

</p>

</div>
<div class="tip_horn"></div>
</div>

</ignore_js_op>

Jacktang · 发表于2023-12-28 07:43

直接使用arduino来进行开发，使用arduino ide 2来开发，这个很可以

wangerxian · 发表于2023-12-28 08:48

用arduino接口确实不错，并且还能继续往上叠板子。

【DigiKey“智造万物，快乐不停”创意大赛】智能家居中控屏 5. Wi-Fi模块制作 [复制链接]

最新回复

浏览过的版块