使用ESP32为无线调制解调器配置DHCP softAP

时间：2019-01-14 07:05:21

标签： esp8266 arduino-ide arduino-esp8266 esp32

我已经为连接到ESP32的wireless modem配置了软AP，它从无线传感器网络接收值，以服务于192.168.1.77的网页。此网页用于保存ipv4设置。在登录页面的此处，我给出了两个选择DHCP或静态IP设置的选项。

enter image description here

我能够选择并保存静态IP，网关和子网设置，然后将其配置为softAP。

但是在DHCP模式下，即使必须使用192.168.4.1，它仍将采用最后配置的值192.168.1.77。

enter image description here

请看看我的代码和网络表单

#include <WiFi.h>
#include "FS.h"
#include "SPIFFS.h"
#include <WebServer.h>

WebServer server(80);

//**********check for connection*************/
bool isConnected = true;
bool isDisconnect = false;

//**********softAPconfig Timer*************/
unsigned long APTimer = 0;
unsigned long APInterval = 120000;

//*********SSID and Pass for AP**************/
const char *ssidAP = "ESPuser";
const char *ssidAPWeb = "ESPWebUser";
const char *ssidDhcpWeb = "ESPDHCPUser";
const char *passDhcpWeb = "1234567";


//*********Static IP Config**************/
IPAddress ap_local_IP(192,168,1,77);
IPAddress ap_gateway(192,168,1,254);
IPAddress ap_subnet(255,255,255,0);

//*********Static IP WebConfig**************/
IPAddress ap_localWeb_IP;
IPAddress ap_Webgateway;
IPAddress ap_Websubnet;
IPAddress ap_dhcpWeb_IP;

uint8_t ip0;
uint8_t ip1;
uint8_t ip2;
uint8_t ip3;

//*********IP Char Array**************/
char ipv4Arr[20];
char gatewayArr[20];           
char subnetArr[20];
char ipv4dhcpArr[20];

void setup()
{   
  Serial.begin(9600);
  while(!Serial);
  WiFi.disconnect(true);
  WiFi.mode(WIFI_AP);
  Serial.println(WiFi.softAP(ssidAP) ? "soft-AP setup": "Failed to connect");
  delay(100);
  Serial.println(WiFi.softAPConfig(ap_local_IP, ap_gateway, ap_subnet)? "Configuring Soft AP" : "Error in Configuration");    
  Serial.println(WiFi.softAPIP());
    SPIFFS.begin();

    server.begin();

    server.on("/", handleRoot); 
    server.on("/dhcp", handleDHCP);
    server.on("/static", handleStatic);
    server.onNotFound(handleNotFound);  

    APTimer = millis();

    while(isConnected && millis()-APTimer<= APInterval) {
        server.handleClient();  }       
}


void loop()
{
  Serial.println(WiFi.softAPIP());
  delay(500);

}

//****************************HANDLE ROOT***************************//
void handleRoot() {
   //Redisplay the form
   if(server.args()>0){
       for(int i=0; i<=server.args();i++){
          Serial.println(String(server.argName(i))+'\t' + String(server.arg(i)));
        }
     if(server.hasArg("ipv4static") && server.hasArg("gateway") &&  server.hasArg("subnet")){
      staticSet();
      }else if(server.arg("ipv4")!= ""){
          dhcpSetManual();
        }else{
           dhcpSetDefault();
          }    
    }else{
      File file = SPIFFS.open("/Select_Settings.html", "r");
         server.streamFile(file,"text/html");
         file.close();
      }
}


void handleDHCP(){
  File  file = SPIFFS.open("/page_dhcp.html", "r");
  server.streamFile(file,"text/html");
  file.close();}

void handleStatic(){
  File  file = SPIFFS.open("/page_static.html", "r");
  server.streamFile(file,"text/html");
  file.close();}

void staticSet(){

           String response="<p>The static ip is ";
           response += server.arg("ipv4static");
           response +="<br>";
           response +="The gateway ip is ";
           response +=server.arg("gateway");
           response +="<br>";
           response +="The subnet Mask is ";
           response +=server.arg("subnet");
           response +="</P><BR>";
           response +="<H2><a href=\"/\">go home</a></H2><br>";
           response += "<script> alert(\"Settings Saved\"); </script>";
           server.send(200, "text/html", response);
           String ipv4static = String(server.arg("ipv4static"));
           String gateway = String(server.arg("gateway"));
           String subnet = String(server.arg("subnet"));
           ipv4static.toCharArray(ipv4Arr,sizeof(ipv4static)+2);
           gateway.toCharArray(gatewayArr,sizeof(gateway)+2);
           subnet.toCharArray(subnetArr,sizeof(subnet)+2);
           byte ip[4];
           parseBytes(ipv4Arr,'.', ip, 4, 10);
           ip0 = (uint8_t)ip[0];
           ip1 = (uint8_t)ip[1];
           ip2 = (uint8_t)ip[2];
           ip3 = (uint8_t)ip[3];
           IPAddress ap_local(ip0,ip1,ip2,ip3);
           ap_localWeb_IP = ap_local;
           parseBytes(gatewayArr,'.', ip, 4, 10);
           ip0 = (uint8_t)ip[0];
           ip1 = (uint8_t)ip[1];
           ip2 = (uint8_t)ip[2];
           ip3 = (uint8_t)ip[3];
           IPAddress ap_gate(ip0,ip1,ip2,ip3);
           ap_Webgateway = ap_gate;
           parseBytes(subnetArr,'.', ip, 4, 10);
           ip0 = (uint8_t)ip[0];
           ip1 = (uint8_t)ip[1];
           ip2 = (uint8_t)ip[2];
           ip3 = (uint8_t)ip[3];
           IPAddress ap_net(ip0,ip1,ip2,ip3);  
           ap_Websubnet= ap_net;

           WiFi.disconnect(true);
           WiFi.mode(WIFI_AP);   
           Serial.println(WiFi.softAP(ssidAPWeb) ? "Setting up SoftAP" : "error setting up");
           delay(100);
           while(!(WiFi.softAPIP()== ap_localWeb_IP)){
               Serial.println(WiFi.softAPConfig(ap_localWeb_IP, ap_gate, ap_net) ? "Configuring softAP" : "kya yaar not connected");    
       }
    isConnected = false;     
    }

void dhcpSetManual(){
           String response="<p>The dhcp IPv4 address is ";
           response += server.arg("ipv4");
           response +="</P><BR>";
           response +="<H2><a href=\"/\">go home</a></H2><br>";
           response += "<script> alert(\"Settings Saved\"); </script>";
           server.send(200, "text/html", response);
           WiFi.disconnect(true);
           WiFi.mode(WIFI_AP);
           Serial.println(WiFi.softAP(ssidDhcpWeb, passDhcpWeb) ? "Setting up SoftAP" : "error setting up");
           delay(100);
           while(!(WiFi.softAPIP()== ap_dhcp)){
            Serial.println(WiFi.softAPConfig(ap_dhcp, ap_gateway,ap_subnet) ? "Configuring DHCP" : "error configuring");
           }     

           isConnected = false;        
  }

void dhcpSetDefault(){
           String response="<p>The dhcp IPv4 address is ";
           response += server.arg("configure");
           response +="</P><BR>";
           response +="<H2><a href=\"/\">go home</a></H2><br>";
           response += "<script> alert(\"Settings Saved\"); </script>";
           server.send(200, "text/html", response);
           WiFi.disconnect(true);
           WiFi.mode(WIFI_AP);
           Serial.println(WiFi.softAP(ssidDhcpWeb, passDhcpWeb) ? "Setting up SoftAP" : "error setting up");
           delay(100);
           while(!(WiFi.softAPIP()== ap_dhcp)){
            Serial.println(WiFi.softAPConfig(ap_dhcp, ap_gateway,ap_subnet) ? "Configuring DHCP" : "error configuring");
           }     

           isConnected = false;          
      }

//****************HANDLE NOT FOUND*********************//
void handleNotFound()
{
  String message = "File Not Found\n\n";
  message += "URI: ";
  message += server.uri();
  message += "\nMethod: ";
  message += (server.method() == HTTP_GET)?"GET":"POST";
  message += "\nArguments: ";
  message += server.args();
  message += "\n";
  for (uint8_t i=0; i<server.args(); i++){
    message += " " + server.argName(i) + ": " + server.arg(i) + "\n";
  }
  message +="<H2><a href=\"/\">go home</a></H2><br>";
  server.send(404, "text/plain", message);
}

void parseBytes(const char* str, char sep, byte* bytes, int maxBytes, int base) {
    for (int i = 0; i < maxBytes; i++) {
        bytes[i] = strtoul(str, NULL, base);  // Convert byte
        str = strchr(str, sep);               // Find next separator
        if (str == NULL || *str == '\0') {
            break;                            // No more separators, exit
        }
        str++;                                // Point to next character after separator
    }
}

您对此的建议将有很大帮助。

1 个答案:

答案 0 :(得分：1)

在您的代码中，我可以看到您正在使用passDhcpWeb作为softAP密码，但是它仅包含7个字符，而根据 WiFiAP.cpp ，密码长度应为8个字符。这可能是造成您的问题的原因，关于断开连接，我也遇到了同样的问题。我通过使用WiFi.disconnect（false）;解决了它Wifi.enabeAP（false）; 希望这对您有帮助

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