Wifimulti use softap before sta connects?
Posted:
Tue Apr 23, 2019 9:10 pmby mrlightsman
I have been using wifimanager for some time but wish to replace it in my code because I don’t like some aspects of it. Although it is excellent work.
For my current project I am using wifimulti as shown in the Arduino IDE examples. With the exception that I moved it to void setupwifi() and call it from the setup().
I am using webserver to serve up a page that I enter parameters. For 8 of those parameters, I’d like to enter the SSID and PW for use by the esp to connect to WiFi in wifimulti.
In order to achieve this, I want the esp to be in softap mode first. Then, once credentials are entered, I want the softap-STA mode to start (so both modes are always on).
Wifimulti seems to run in softap-sta mode once connected to WiFi. Can I start the softap before moving to softap-sta?
Yes. I am reinventing the wifimanager wheel, for the most part. The two main differences I am trying to achieve is to always have the “admin page” (the captive portal in wifimanager) available. And, I want to have multiple WiFi networks to choose from as in Wifimulti.
Any suggestions would be greatly appreciated. I’m thinking I need to first start the softap in setup() then invoke the wifimulti as part of handling the server webpage?? But, if I do this I want the esp to go right back into softap-sta mode if it has been configured and the loses power. On power up, I want it to be in softap-sta mode. Maybe by using if statements to examine the char where I am storing SSID for wifimulti?
Thank you.
Re: Wifimulti use softap before sta connects?
Posted:
Wed Apr 24, 2019 7:37 amby mrlightsman
Here is my code to date. I use json & SPIFFS to store the SSID & PW variables to use in wiFiMulti. I also include ap_SSID and ap_Password to set the credentials for the softAP.
Here are the specific lines of code I am trying to figure out how to get value= to be a variable
Code: Select all<FORM METHOD="POST"action="/">
<h3>Access Point Credentials</h3>
<table>
<tr><th>Name</th><td><input type="text" name="custom_ap_SSID" value=ap_SSID></td></tr>
<tr><th>Password</th><td><input type="text" name="custom_ap_Password" value=a_Password></td></tr>
<tr><th>Name</th><td><input type="text" name="custom_SSID1" value=SSID1></td></tr>
<tr><th>Password</th><td><input type="text" name="custom_PW1" value=PW1></td></tr>
<tr><th>Name</th><td><input type="text" name="custom_SSID2" value=SSID2></td></tr>
<tr><th>Password</th><td><input type="text" name="custom_PW2" value=PW2></td></tr>
<tr><th>Name</th><td><input type="text" name="custom_SSID3" value=SSID3></td></tr>
<tr><th>Password</th><td><input type="text" name="custom_PW3" value=PW3></td></tr>
<tr><th>Name</th><td><input type="text" name="custom_SSID4" value=SSID4></td></tr>
<tr><th>Password</th><td><input type="text" name="custom_PW4" value=PW4></td></tr>
</table>
<input type="submit" value="Submit Changes">
</form>
And for context, here is my entire code. Again, thank you for your help.
Code: Select all#include <FS.h>
#include <arduino.h>
#include <ESP8266WiFi.h>
#include <ArduinoJson.h>
#include <ESP8266WiFiMulti.h>
#include <ESP8266WebServer.h>
ESP8266WiFiMulti wifiMulti;
ESP8266WebServer server(80);
String webPage; //to store html code from htmlpage
//Define WifiMulti Variables;
char SSID1[15];
char SSID2[15];
char SSID3[15];
char SSID4[15];
char PW1[15];
char PW2[15];
char PW3[15];
char PW4[15];
//Define the local AP variables
char ap_SSID[15] = "New_Box"; //SSID for ESP when in AP mode will be overwritten by json
char ap_Password[15] = "password"; //Password for ESP when in AP mode will be overwritten by json
const char htmlPage[]PROGMEM=R"=====(
<!DOCTYPE html>
<html>
<head><meta name=\"viewport\" content=\"width=device-width, initial-scale=1\">
<link rel=\"icon\" href=\"data:,\">
<style>body { text-align: center; font-family: \"Trebuchet MS\", Arial;}
table { border-collapse:collapse; width:35%; margin-left:auto; margin-right:auto; }
th { padding:12px; background-color: #0043af; color: white; }
tr { border:1px solid #ddd; padding:12px; }
tr:hover { background-color: #bcbcbc; }
td { border: none; padding:12px; }
.button {background-color: #195B6A; border: none; color: white; padding: 12px 40px;
text-align: center; font-family: \"Trebuchet MS\", Arial;
text-direction: none; font-size: 30px; margin: 2px; cursor: pointer;}
server.send(200,"</style></head><body><h1>Device Configuration Portal</h1>
<FORM METHOD="POST"action="/">
<h3>Access Point Credentials</h3>
<table>
<tr><th>Name</th><td><input type="text" name="custom_ap_SSID" value=ap_SSID></td></tr>
<tr><th>Password</th><td><input type="text" name="custom_ap_Password" value=a_Password></td></tr>
<tr><th>Name</th><td><input type="text" name="custom_SSID1" value=SSID1></td></tr>
<tr><th>Password</th><td><input type="text" name="custom_PW1" value=PW1></td></tr>
<tr><th>Name</th><td><input type="text" name="custom_SSID2" value=SSID2></td></tr>
<tr><th>Password</th><td><input type="text" name="custom_PW2" value=PW2></td></tr>
<tr><th>Name</th><td><input type="text" name="custom_SSID3" value=SSID3></td></tr>
<tr><th>Password</th><td><input type="text" name="custom_PW3" value=PW3></td></tr>
<tr><th>Name</th><td><input type="text" name="custom_SSID4" value=SSID4></td></tr>
<tr><th>Password</th><td><input type="text" name="custom_PW4" value=PW4></td></tr>
</table>
<input type="submit" value="Submit Changes">
</form>
</body>
</html>
)=====";
void handleConfigurationPage() {
webPage=htmlPage;
server.arg("custom_SSID1").toCharArray(SSID1,15);
server.arg("custom_PW1").toCharArray(PW1,15);
server.arg("custom_SSID2").toCharArray(SSID2,15);
server.arg("custom_PW2").toCharArray(PW2,15);
server.arg("custom_SSID3").toCharArray(SSID3,15);
server.arg("custom_PW3").toCharArray(PW3,15);
server.arg("custom_SSID4").toCharArray(SSID4,15);
server.arg("custom_PW4").toCharArray(PW4,15);
server.arg("custom_ap_SSID").toCharArray(ap_SSID,15);
server.arg("custom_ap_Password").toCharArray(ap_Password,15);
Serial.println("Text Received, contents:");
Serial.println(SSID1);
Serial.println(PW1);
Serial.println(SSID2);
Serial.println(PW2);
Serial.println(SSID3);
Serial.println(PW3);
Serial.println(SSID4);
Serial.println(PW4);
Serial.println(ap_SSID);
Serial.println(ap_Password);
server.send(200,"text/html",webPage);
Serial.println("saving config");
DynamicJsonBuffer jsonBuffer;
JsonObject& json = jsonBuffer.createObject();
json["SSID1"] = SSID1;
json["PW1"] = PW1;
json["SSID2"] = SSID2;
json["PW2"] = PW2;
json["SSID3"] = SSID3;
json["PW3"] = PW3;
json["SSID4"] = SSID4;
json["PW4"] = PW4;
json["ap_SSID"] = ap_SSID;
json["ap_Password"] = ap_Password;
File configFile = SPIFFS.open("/config.json", "w");
if (!configFile) {
Serial.println("failed to open config file for writing");
}
json.prettyPrintTo(Serial);
json.printTo(configFile);
configFile.close();
//end save
}
void setupWifi() {
// WiFi.mode(WIFI_STA);
wifiMulti.addAP(SSID1, PW1);
wifiMulti.addAP(SSID2, PW2);
wifiMulti.addAP(SSID3, PW3);
wifiMulti.addAP(SSID4, PW4);
Serial.println("Connecting Wifi...");
while (wifiMulti.run() != WL_CONNECTED) {
Serial.print(".");
delay(500);
}
Serial.println("");
Serial.println("WiFi connected");
Serial.println("Connected to SSID: ");
Serial.println(WiFi.SSID());
Serial.println("IP address: ");
Serial.println(WiFi.localIP());
}
void setup() {
Serial.begin(115200);
// Serial.println();
// Setup pins to off position
pinMode(0, OUTPUT);
digitalWrite(0, HIGH);
// SPIFFS.format(); //clean FS, for testing
//read configuration from FS json
Serial.println("mounting FS...");
if (SPIFFS.begin()) {
Serial.println("mounted file system");
if (SPIFFS.exists("/config.json")) {
//file exists, reading and loading
Serial.println("reading config file");
File configFile = SPIFFS.open("/config.json", "r");
if (configFile) {
Serial.println("opened config file");
size_t size = configFile.size();
// Allocate a buffer to store contents of the file.
std::unique_ptr<char[]> buf(new char[size]);
configFile.readBytes(buf.get(), size);
DynamicJsonBuffer jsonBuffer;
JsonObject& json = jsonBuffer.parseObject(buf.get());
json.printTo(Serial);
if (json.success()) {
Serial.println("\nparsed json");
strcpy(SSID1, json["SSID1"]);
strcpy(PW1, json["PW1"]);
strcpy(SSID1, json["SSID2"]);
strcpy(PW1, json["PW2"]);
strcpy(SSID1, json["SSID3"]);
strcpy(PW1, json["PW3"]);
strcpy(SSID1, json["SSID4"]);
strcpy(PW1, json["PW4"]);
strcpy(ap_SSID, json["ap_SSID"]);
strcpy(ap_Password, json["ap_Password"]);
//add other variables here
} else {
Serial.println("failed to load json config");
}
}
}
} else {
Serial.println("failed to mount FS");
}
//end read
setupWifi();
server.on("/", handleConfigurationPage);
server.begin();
Serial.println("HTTP Server Started");
}
void loop() {
server.handleClient();
}