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Light-Weight MultiWiFi/Credentials Manager for RP2040W boards using built-in CYW43439 WiFi. Powerful-yet-simple-to-use feature to enable adding dynamic custom parameters. Library to configure MultiWiFi/Credentials at runtime for RP2040W boards, using CYW43439 WiFi. You can also specify DHCP HostName and STA IP. Use much less memory compared to f…

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WiFiManager_RP2040W_Lite (Light Weight Credentials / WiFi Manager for RP2040W built-in CYW43439 WiFi)

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Table of Contents



Features

If you have used the full-fledge WiFiManager such as :

  1. Tzapu WiFiManager
  2. Ken Taylor WiFiManager
  3. Khoi Hoang ESP_WiFiManager

and have to write complicated callback functions to save custom parameters in LittleFS, you'd appreciate the simplicity of this Light-Weight Credentials / WiFiManager.

This library is a Light Weight Credentials / WiFi Manager for RP2040W with built-in CYW43439 WiFi modules/shields.

This is a Credentials / WiFi Connection Manager, permitting the addition of custom parameters to be configured in Config Portal. The parameters then will be saved automatically, without the complicated callback functions to handle data saving / retrieving.

You can also specify DHCP HostName, static AP and STA IP. Use much less memory compared to full-fledge WiFiManager. Config Portal will be auto-adjusted to match the number of dynamic custom parameters. Credentials are saved in LittleFS, shared with DoubleResetDetector_Generic library.

The web configuration portal, served from the Generic WiFi modules/shields is operating as an access point (AP) with configurable static IP address or use default IP Address of 192.168.42.1

New recent features:

  • MultiWiFi feature for configuring/auto(re)connecting Portenta WiFi shields to the available MultiWiFi APs at runtime.
  • DoubleDetectDetector feature to force Config Portal when double reset is detected within predetermined time, default 10s.
  • Powerful-yet-simple-to-use feature to enable adding dynamic custom parameters from sketch and input using the same Config Portal. Config Portal will be auto-adjusted to match the number of dynamic parameters.
  • Optional default Credentials as well as Dynamic parameters to be optionally autoloaded into Config Portal to use or change instead of manually input.
  • Dynamic custom parameters to be saved automatically in non-volatile LittleeFS memory.
  • Configurable Config Portal Title to be either BoardName or default undistinguishable names.
  • Examples are designed to separate Credentials / Defines / Dynamic Params / Code so that you can change Credentials / Dynamic Params quickly for each device.
  • Control Config Portal from software or Virtual Switches
  • To permit autoreset after configurable timeout if DRD/MRD or non-persistent forced-CP
  • Use new RP2040W LittleFS features
  • Scan WiFi networks for selection in Configuration Portal

WiFiMulti_Generic library usage

The usage the new WiFiMulti_Generic library to help connect to the best of multi-WiFi APs, with auto-checking / auto-reconnecting features when WiFi connection is lost.


Currently supported Boards

This WiFiManager_RP2040W_Lite library currently supports these following boards:

  1. RASPBERRY_PI_PICO_W boards, using CYW43439 WiFi with arduino-pico core v2.4.0+

Currently supported WiFi shields/modules

  1. Built-in CYW43439 WiFi


Prerequisites

  1. Arduino IDE 1.8.19+ for Arduino. GitHub release
  2. Earle Philhower's arduino-pico core v2.6.3+ for RASPBERRY_PI_PICO_W with CYW43439 WiFi, etc. GitHub release
  3. Functional-Vlpp library v1.0.2+ to use server's lambda function. To install. check arduino-library-badge
  4. WiFiWebServer library v1.10.0+. To install. check arduino-library-badge
  5. DoubleResetDetector_Generic v1.8.1+. To install, check arduino-library-badge
  6. WiFiMulti_Generic library v1.2.2+ to use WiFiMulti function. To install, check arduino-library-badge.

Installation

Use Arduino Library Manager

The best and easiest way is to use Arduino Library Manager. Search for WiFiManager_RP2040W_Lite, then select / install the latest version. You can also use this link arduino-library-badge for more detailed instructions.

Manual Install

  1. Navigate to WiFiManager_RP2040W_Lite page.
  2. Download the latest release WiFiManager_RP2040W_Lite-main.zip.
  3. Extract the zip file to WiFiManager_RP2040W_Lite-main directory
  4. Copy the whole
  • WiFiManager_RP2040W_Lite-main folder to Arduino libraries' directory such as ~/Arduino/libraries/.

VS Code & PlatformIO:

  1. Install VS Code
  2. Install PlatformIO
  3. Install WiFiManager_RP2040W_Lite library by using Library Manager. Search for WiFiManager_RP2040W_Lite in Platform.io Author's Libraries
  4. Use included platformio.ini file from examples to ensure that all dependent libraries will installed automatically. Please visit documentation for the other options and examples at Project Configuration File


How It Works

  • The RP2040W_WiFi example shows how it works and should be used as the basis for a sketch that uses this library.
  • The concept of RP2040W_WiFi is that a new WiFi module/shield will start a WiFi configuration portal when powered up, but has no valid stored Credentials or can't connect to WiFi APs after a pre-determined time.
  • There are 6 more custom parameters added in the sketch which you can use in your program later. In the example, they are: 2 sets of Blynk Servers and Tokens, Blynk Port and MQTT Server.
  • Using any WiFi enabled device with a browser (computer, phone, tablet) connect to the newly created AP and type in the configurable AP IP address (default 192.168.42.1). The Config Portal AP channel is not configurable because of limitation of the cyc43 WiFi library.
  • The Config Portal is auto-adjusted to fix the 4 static parameters (WiFi SSIDs/PWDs) as well as 6 more dynamic custom parameters.
  • After the custom data entered, and Save button pressed, the configuration data will be saved in host's non-volatile memory, then the board reboots.
  • If there is valid stored Credentials, it'll go directly to connect to one of the MultiWiFi APs without starting / using the Config Portal.
  • Generic WiFi module/shield will try to connect. If successful, the dynamic DHCP and/or configured static IP address will be displayed in the configuration portal.
  • The Generic WiFi module/shield WiFi Config Portal network and Web Server will shutdown to return control to the sketch code.
  • In the operation, if the current WiFi connection is lost because of any reason, the system will auto(Re)connect to the remaining WiFi AP.
  • If system can't connect to any of the 2 WiFi APs, the Config Portal will start, after some pre-determined time, to permit user to update the Credentials.

How to use

1. Basic usage

  • Include in your sketch
#include <WiFiManager_RP2040W_Lite.h>

WiFiManager_RP2040W_Lite* WiFiManager_RP2040W;

2. Add custom parameters

  • To add custom parameters, just add
#include "defines.h"

// USE_DYNAMIC_PARAMETERS defined in defines.h

/////////////// Start dynamic Credentials ///////////////

//Defined in <WiFiManager_RP2040W_Lite.h>
/**************************************
  #define MAX_ID_LEN                5
  #define MAX_DISPLAY_NAME_LEN      16

  typedef struct
  {
  char id             [MAX_ID_LEN + 1];
  char displayName    [MAX_DISPLAY_NAME_LEN + 1];
  char *pdata;
  uint8_t maxlen;
  } MenuItem;
**************************************/

#if USE_DYNAMIC_PARAMETERS

#define MAX_BLYNK_SERVER_LEN      34
#define MAX_BLYNK_TOKEN_LEN       34

char Blynk_Server1 [MAX_BLYNK_SERVER_LEN + 1]  = "account.duckdns.org";
char Blynk_Token1  [MAX_BLYNK_TOKEN_LEN + 1]   = "token1";

char Blynk_Server2 [MAX_BLYNK_SERVER_LEN + 1]  = "account.ddns.net";
char Blynk_Token2  [MAX_BLYNK_TOKEN_LEN + 1]   = "token2";

#define MAX_BLYNK_PORT_LEN        6
char Blynk_Port   [MAX_BLYNK_PORT_LEN + 1]  = "8080";

#define MAX_MQTT_SERVER_LEN      34
char MQTT_Server  [MAX_MQTT_SERVER_LEN + 1]   = "mqtt.duckdns.org";

MenuItem myMenuItems [] =
{
  { "sv1", "Blynk Server1", Blynk_Server1,  MAX_BLYNK_SERVER_LEN },
  { "tk1", "Token1",        Blynk_Token1,   MAX_BLYNK_TOKEN_LEN },
  { "sv2", "Blynk Server2", Blynk_Server2,  MAX_BLYNK_SERVER_LEN },
  { "tk2", "Token2",        Blynk_Token2,   MAX_BLYNK_TOKEN_LEN },
  { "prt", "Port",          Blynk_Port,     MAX_BLYNK_PORT_LEN },
  { "mqt", "MQTT Server",   MQTT_Server,    MAX_MQTT_SERVER_LEN },
};

uint16_t NUM_MENU_ITEMS = sizeof(myMenuItems) / sizeof(MenuItem);  //MenuItemSize;

#else

MenuItem myMenuItems [] = {};

uint16_t NUM_MENU_ITEMS = 0;

#endif    //USE_DYNAMIC_PARAMETERS

3. Not using custom parameters

  • If you don't need to add dynamic parameters, use the following in sketch
#define USE_DYNAMIC_PARAMETERS      false

4. To open Config Portal

  • When you want to open a config portal, just add
WiFiManager_RP2040W = new WiFiManager_RP2040W_Lite();
WiFiManager_RP2040W->begin();

5. To use different AP WiFi Channel

Not working now because cyw43 WiFi library limitation.
  • To not use default AP WiFi Channel 10 to avoid conflict with other WiFi APs :
WiFiManager_RP2040W->setConfigPortalChannel(newChannel);
  • To use random AP WiFi Channel to avoid conflict with other WiFi APs :
WiFiManager_RP2040W->setConfigPortalChannel(0);

6. To use different static AP IP from default

Not working now because cyw43 WiFi library limitation. Fixed at 192.168.42.1
  • To use different static AP IP (not use default 192.168.42.1), call
WiFiManager_RP2040W->setConfigPortalIP(IPAddress(xxx,xxx,xxx,xxx));

7. To use custom DHCP HostName

  • To set custom DHCP HostName :
// Set customized DHCP HostName
WiFiManager_RP2040W->begin("SAMD_ABCDEF");

or just use the default Hostname, for example "SAMD_XXXXXX" for SAMD

//Or use default Hostname "WIFI_GENERIC_XXXXXX"
//WiFiManager_RP2040W->begin();

8. To use custom HTML Style

const char NewCustomsStyle[] /*PROGMEM*/ = "<style>div,input{padding:5px;font-size:1em;}input{width:95%;}body{text-align: center;}\
button{background-color:blue;color:white;line-height:2.4rem;font-size:1.2rem;width:100%;}fieldset{border-radius:0.3rem;margin:0px;}</style>";

...

WiFiManager_RP2040W->setCustomsStyle(NewCustomsStyle);

9. To use custom Head Elements

WiFiManager_RP2040W->setCustomsHeadElement("<style>html{filter: invert(10%);}</style>");

10. To use CORS Header

WiFiManager_RP2040W->setCORSHeader("Your Access-Control-Allow-Origin");

While in AP mode, connect to it using its SSID (WIFI_GENERIC_XXXXXX) / Password ("MyWIFI_GENERIC_XXXXXX"), then open a browser to the Portal AP IP, default 192.168.42.1, configure wifi then click Save. The Credentials / WiFi connection information will be saved in non-volatile memory. It will then autoconnect.

Once Credentials / WiFi network information is saved in the host non-volatile memory, it will try to autoconnect to WiFi every time it is started, without requiring any function calls in the sketch.

11. To use and input only one set of WiFi SSID and PWD

11.1 If you need to use and input only one set of WiFi SSID/PWD

// Permit input only one set of WiFi SSID/PWD. The other can be "NULL or "blank"
// Default is false (if not defined) => must input 2 sets of SSID/PWD
#define REQUIRE_ONE_SET_SSID_PW       true

But it's always advisable to use and input both sets for reliability.

11.2 If you need to use both sets of WiFi SSID/PWD

// Permit input only one set of WiFi SSID/PWD. The other can be "NULL or "blank"
// Default is false (if not defined) => must input 2 sets of SSID/PWD
#define REQUIRE_ONE_SET_SSID_PW       false

12. To enable auto-scan of WiFi networks for selection in Configuration Portal

12.1 Enable auto-scan of WiFi networks for selection in Configuration Portal

#define SCAN_WIFI_NETWORKS                  true

The manual input of SSIDs is default enabled, so that users can input arbitrary SSID, not only from the scanned list. This is for the sample use-cases in which users can input the known SSIDs of another place, then send the boards to that place. The boards can connect to WiFi without users entering Config Portal to re-configure.

12.2 Disable manually input SSIDs

// To disable manually input SSID, only from a scanned SSID lists
#define MANUAL_SSID_INPUT_ALLOWED           false

This is for normal use-cases in which users can only select an SSID from a scanned list of SSIDs to avoid typo mistakes and/or security.

12.3 Select maximum number of SSIDs in the list

The maximum number of SSIDs in the list is selectable from 2 to 15 (for ESP8266/ESP32-AT shields, from 2-6). If invalid number of SSIDs is selected, the default number of 10 will be used.

// From 2-15
#define MAX_SSID_IN_LIST                    8

13. To avoid blocking in loop when WiFi is lost

13.1 Max times to try WiFi per loop

To define max times to try WiFi per loop() iteration. To avoid blocking issue in loop()

Default is 1 if not defined, and minimum is forced to be 1.

To use, uncomment in defines.h.

Check retries block the main loop #18

#define MAX_NUM_WIFI_RECON_TRIES_PER_LOOP     2

13.2 Interval between reconnection WiFi if lost

Default is no interval between reconnection WiFi times if lost WiFi. Max permitted interval will be 10mins.

Uncomment to use. Be careful, WiFi reconnection will be delayed if using this method.

Only use whenever urgent tasks in loop() can't be delayed. But if so, it's better you have to rewrite your code, e.g. using higher priority tasks.

Check retries block the main loop #18

#define WIFI_RECON_INTERVAL                   30000     // 30s


Examples

  1. RP2040W_WiFi
  2. RP2040W_WiFi_MQTT


So, how it works?

In Configuration Portal Mode, it starts an AP called RP2040W_XXXXXX. Connect to it using the configurable password you can define in the code. For example, MyRP2040W_XXXXXX (see examples):

After you connected, please, go to http://192.168.3.1, you'll see this Main page:

Enter your credentials,

1. Without SCAN_WIFI_NETWORKS

2. With SCAN_WIFI_NETWORKS

then click Save.

The WiFi Credentials will be saved and the board connect to the selected WiFi AP.

If you're already connected to a listed WiFi AP and don't want to change anything, just select Exit from the Main page to reboot the board and connect to the previously-stored AP. The WiFi Credentials are still intact.


Important Notes

  1. Now you can use special chars such as ~, !, @, #, $, %, ^, &, _, -, space,etc. thanks to brondolin to provide the amazing fix in Blynk_WM to permit input special chars such as % and # into data fields. See Issue 3.
  2. The SSIDs, Passwords must be input (or to make them different from blank). Otherwise, the Config Portal will re-open until those fields have been changed. If you don't need any field, just input anything or use duplicated data from similar field.
  3. WiFi password max length now is 63 chars according to WPA2 standard.

How to use default Credentials and have them pre-loaded onto Config Portal

See this example and modify as necessary

1. To always load Default Credentials and override Config Portal data

// Used mostly for development and debugging. FORCES default values to be loaded each run.
// Config Portal data input will be ignored and overridden by DEFAULT_CONFIG_DATA
bool LOAD_DEFAULT_CONFIG_DATA = true;

2. To load Default Credentials when there is no valid Credentials.

Config Portal data input will be override DEFAULT_CONFIG_DATA

// Used mostly once debugged. Assumes good data already saved in device.
// Config Portal data input will be override DEFAULT_CONFIG_DATA
bool LOAD_DEFAULT_CONFIG_DATA = false;

3. Example of Default Credentials

/// Start Default Config Data //////////////////

/*
#define SSID_MAX_LEN      32
//From v1.0.3, WPA2 passwords can be up to 63 characters long.
#define PASS_MAX_LEN      64

typedef struct
{
  char wifi_ssid[SSID_MAX_LEN];
  char wifi_pw  [PASS_MAX_LEN];
}  WiFi_Credentials;

#define NUM_WIFI_CREDENTIALS      2

// Configurable items besides fixed Header, just add board_name 
#define NUM_CONFIGURABLE_ITEMS    ( ( 2 * NUM_WIFI_CREDENTIALS ) + 1 )
////////////////

typedef struct Configuration
{
  char header         [16];
  WiFi_Credentials  WiFi_Creds  [NUM_WIFI_CREDENTIALS];
  char board_name     [24];
  int  checkSum;
} WIFI_GENERIC_Configuration;
*/

#define TO_LOAD_DEFAULT_CONFIG_DATA      false

#if TO_LOAD_DEFAULT_CONFIG_DATA

// This feature is primarily used in development to force a known set of values as Config Data
// It will NOT force the Config Portal to activate. Use DRD or erase Config Data with Blynk.clearConfigData()

// Used mostly for development and debugging. FORCES default values to be loaded each run.
// Config Portal data input will be ignored and overridden by DEFAULT_CONFIG_DATA
//bool LOAD_DEFAULT_CONFIG_DATA = true;

// Used mostly once debugged. Assumes good data already saved in device.
// Config Portal data input will be override DEFAULT_CONFIG_DATA
bool LOAD_DEFAULT_CONFIG_DATA = false;


WIFI_GENERIC_Configuration defaultConfig =
{
  //char header[16], dummy, not used
  "RP2040W_WIFI",
  // WiFi_Credentials  WiFi_Creds  [NUM_WIFI_CREDENTIALS];
  // WiFi_Credentials.wifi_ssid and WiFi_Credentials.wifi_pw
  "SSID1",  "password1",
  "SSID2",  "password2",
  //char board_name     [24];
  "RP2040W-Control",
  // terminate the list
  //int  checkSum, dummy, not used
  0
  /////////// End Default Config Data /////////////
};

#else

bool LOAD_DEFAULT_CONFIG_DATA = false;

WIFI_GENERIC_Configuration defaultConfig;

#endif    // TO_LOAD_DEFAULT_CONFIG_DATA

/////////// End Default Config Data /////////////

How to add dynamic parameters from sketch

Example of Default dynamicParams

  • To add custom parameters, just modify the example below
#ifndef dynamicParams_h
#define dynamicParams_h

#include "defines.h"

// USE_DYNAMIC_PARAMETERS defined in defined.h

/////////////// Start dynamic Credentials ///////////////

//Defined in <WiFiManager_RP2040W_Lite.h>
/**************************************
  #define MAX_ID_LEN                5
  #define MAX_DISPLAY_NAME_LEN      16

  typedef struct
  {
  char id             [MAX_ID_LEN + 1];
  char displayName    [MAX_DISPLAY_NAME_LEN + 1];
  char *pdata;
  uint8_t maxlen;
  } MenuItem;
**************************************/

#if USE_DYNAMIC_PARAMETERS

#define MAX_BLYNK_SERVER_LEN      34
#define MAX_BLYNK_TOKEN_LEN       34

char Blynk_Server1 [MAX_BLYNK_SERVER_LEN + 1]  = "account.duckdns.org";
char Blynk_Token1  [MAX_BLYNK_TOKEN_LEN + 1]   = "token1";

char Blynk_Server2 [MAX_BLYNK_SERVER_LEN + 1]  = "account.ddns.net";
char Blynk_Token2  [MAX_BLYNK_TOKEN_LEN + 1]   = "token2";

#define MAX_BLYNK_PORT_LEN        6
char Blynk_Port   [MAX_BLYNK_PORT_LEN + 1]  = "8080";

#define MAX_MQTT_SERVER_LEN      34
char MQTT_Server  [MAX_MQTT_SERVER_LEN + 1]   = "mqtt.duckdns.org";

MenuItem myMenuItems [] =
{
  { "sv1", "Blynk Server1", Blynk_Server1,  MAX_BLYNK_SERVER_LEN },
  { "tk1", "Token1",        Blynk_Token1,   MAX_BLYNK_TOKEN_LEN },
  { "sv2", "Blynk Server2", Blynk_Server2,  MAX_BLYNK_SERVER_LEN },
  { "tk2", "Token2",        Blynk_Token2,   MAX_BLYNK_TOKEN_LEN },
  { "prt", "Port",          Blynk_Port,     MAX_BLYNK_PORT_LEN },
  { "mqt", "MQTT Server",   MQTT_Server,    MAX_MQTT_SERVER_LEN },
};

uint16_t NUM_MENU_ITEMS = sizeof(myMenuItems) / sizeof(MenuItem);  //MenuItemSize;

#else

MenuItem myMenuItems [] = {};

uint16_t NUM_MENU_ITEMS = 0;

#endif    //USE_DYNAMIC_PARAMETERS


#endif      //dynamicParams_h
  • If you don't need to add dynamic parameters, use the following in sketch
#define USE_DYNAMIC_PARAMETERS     false

or

/////////////// Start dynamic Credentials ///////////////

MenuItem myMenuItems [] = {};

uint16_t NUM_MENU_ITEMS = 0;
/////// // End dynamic Credentials ///////////

Important Notes for using Dynamic Parameters' ids

  1. These ids (such as "mqtt" in example) must be unique.

Please be noted that the following reserved names are already used in library:

"id"    for WiFi SSID
"pw"    for WiFi PW
"id1"   for WiFi1 SSID
"pw1"   for WiFi1 PW
"nm"    for Board Name


Example RP2040W_WiFi

Please take a look at other examples, as well.

#include "defines.h"
#include "Credentials.h"
#include "dynamicParams.h"
WiFiManager_RP2040W_Lite* WiFiManager_RP2040W;
void heartBeatPrint()
{
static int num = 1;
// Must use with WiFiConnected() to fix WiFi.status() bug in the cyw43 library or arduino-pico core
if ( (WiFi.status() == WL_CONNECTED) )
//if ( WiFiManager_RP2040W->WiFiConnected() )
Serial.print("H"); // H means connected to WiFi
else
Serial.print("F"); // F means not connected to WiFi
if (num == 80)
{
Serial.println();
num = 1;
}
else if (num++ % 10 == 0)
{
Serial.print(" ");
}
}
void check_status()
{
static unsigned long checkstatus_timeout = 0;
//KH
#define HEARTBEAT_INTERVAL 20000L
// Print hearbeat every HEARTBEAT_INTERVAL (20) seconds.
if ((millis() > checkstatus_timeout) || (checkstatus_timeout == 0))
{
heartBeatPrint();
checkstatus_timeout = millis() + HEARTBEAT_INTERVAL;
}
}
#if USING_CUSTOMS_STYLE
const char NewCustomsStyle[] /*PROGMEM*/ = "<style>div,input{padding:5px;font-size:1em;}input{width:95%;}body{text-align: center;}\
button{background-color:blue;color:white;line-height:2.4rem;font-size:1.2rem;width:100%;}fieldset{border-radius:0.3rem;margin:0px;}</style>";
#endif
void setup()
{
// Debug console
Serial.begin(115200);
while (!Serial && millis() < 5000);
delay(1000);
Serial.print("\nStart RP2040W_WiFi on "); Serial.print(BOARD_NAME);
Serial.print(" with "); Serial.println(SHIELD_TYPE);
Serial.println(WIFIMULTI_GENERIC_VERSION);
Serial.println(WIFI_MANAGER_RP2040W_LITE_VERSION);
WiFiManager_RP2040W = new WiFiManager_RP2040W_Lite();
// RP2040W AP IP is fixed @ 192.168.42.1
// Channel is also fixed
// Optional to change default AP IP(192.168.4.1) and channel(10)
//WiFiManager_RP2040W->setConfigPortalIP(IPAddress(192, 168, 120, 1));
//WiFiManager_RP2040W->setConfigPortalChannel(0);
#if USING_CUSTOMS_STYLE
WiFiManager_RP2040W->setCustomsStyle(NewCustomsStyle);
#endif
#if USING_CUSTOMS_HEAD_ELEMENT
WiFiManager_RP2040W->setCustomsHeadElement("<style>html{filter: invert(10%);}</style>");
#endif
#if USING_CORS_FEATURE
WiFiManager_RP2040W->setCORSHeader("Your Access-Control-Allow-Origin");
#endif
// Set customized DHCP HostName
WiFiManager_RP2040W->begin(HOST_NAME);
//Or use default Hostname "RP2040W_WiFi"
//WiFiManager_RP2040W->begin();
}
#if USE_DYNAMIC_PARAMETERS
void displayCredentials()
{
Serial.println("\nYour stored Credentials :");
for (uint16_t i = 0; i < NUM_MENU_ITEMS; i++)
{
Serial.print(myMenuItems[i].displayName);
Serial.print(" = ");
Serial.println(myMenuItems[i].pdata);
}
}
void displayCredentialsInLoop()
{
static bool displayedCredentials = false;
if (!displayedCredentials)
{
for (int i = 0; i < NUM_MENU_ITEMS; i++)
{
if (!strlen(myMenuItems[i].pdata))
{
break;
}
if ( i == (NUM_MENU_ITEMS - 1) )
{
displayedCredentials = true;
displayCredentials();
}
}
}
}
#endif
void loop()
{
WiFiManager_RP2040W->run();
check_status();
#if USE_DYNAMIC_PARAMETERS
displayCredentialsInLoop();
#endif
}


2. File defines.h

#ifndef defines_h
#define defines_h
/* Comment this out to disable prints and save space */
#define DEBUG_WIFI_WEBSERVER_PORT Serial
#define WIFI_GENERIC_DEBUG_OUTPUT Serial
#define _WIFI_GENERIC_LOGLEVEL_ 1
#define DRD_GENERIC_DEBUG true
#if ( defined(ARDUINO_RASPBERRY_PI_PICO_W) )
#if (_WIFI_GENERIC_LOGLEVEL_ > 3)
#warning Use ARDUINO_RASPBERRY_PI_PICO_W and LittleFS
#endif
#else
#error This code is intended to run on the ARDUINO_RASPBERRY_PI_PICO_W platform! Please check your Tools->Board setting.
#endif
/////////////////////////////////////////////
// You have to select true for the first time for any board
#define FORCE_REFORMAT false
/////////////////////////////////////////////
// To use the default WiFi library here
#define USE_WIFI_NINA false
#define USE_WIFI_CUSTOM false
/////////////////////////////////////////////
// Add customs headers
#define USING_CUSTOMS_STYLE true
#define USING_CUSTOMS_HEAD_ELEMENT true
#define USING_CORS_FEATURE true
/////////////////////////////////////////////
#define SHIELD_TYPE "RP2040W WiFi"
#if (_WIFI_GENERIC_LOGLEVEL_ > 3)
#warning Using WiFi.h Library defined in arduino-pico core.
#endif
/////////////////////////////////////////////
// Permit running CONFIG_TIMEOUT_RETRYTIMES_BEFORE_RESET times before reset hardware
// to permit user another chance to config. Only if Config Data is valid.
// If Config Data is invalid, this has no effect as Config Portal will persist
#define RESET_IF_CONFIG_TIMEOUT true
// Permitted range of user-defined RETRY_TIMES_RECONNECT_WIFI between 2-5 times
#define RETRY_TIMES_RECONNECT_WIFI 3
// Permitted range of user-defined CONFIG_TIMEOUT_RETRYTIMES_BEFORE_RESET between 2-100
#define CONFIG_TIMEOUT_RETRYTIMES_BEFORE_RESET 5
// Config Timeout 120s (default 60s). Applicable only if Config Data is Valid
#define CONFIG_TIMEOUT 120000L
/////////////////////////////////////////////
// Permit input only one set of WiFi SSID/PWD. The other can be "NULL or "blank"
// Default is false (if not defined) => must input 2 sets of SSID/PWD
#define REQUIRE_ONE_SET_SSID_PW false
// Max times to try WiFi per loop() iteration. To avoid blocking issue in loop()
// Default 1 if not defined, and minimum 1.
//#define MAX_NUM_WIFI_RECON_TRIES_PER_LOOP 2
// Default no interval between recon WiFi if lost
// Max permitted interval will be 10mins
// Uncomment to use. Be careful, WiFi reconnect will be delayed if using this method
// Only use whenever urgent tasks in loop() can't be delayed. But if so, it's better you have to rewrite your code, e.g. using higher priority tasks.
#define WIFI_RECON_INTERVAL 30000
/////////////////////////////////////////////
#define USE_DYNAMIC_PARAMETERS true
/////////////////////////////////////////////
#define SCAN_WIFI_NETWORKS true
// To be able to manually input SSID, not from a scanned SSID lists
#define MANUAL_SSID_INPUT_ALLOWED true
/////////////////////////////////////////////
// From 2-15
#define MAX_SSID_IN_LIST 8
/////////////////////////////////////////////
#define USE_WIFI_RP2040W true
#include <WiFiManager_RP2040W_Lite.h>
#define HOST_NAME "RP2040W-WiFi"
#if defined(LED_BUILTIN)
#define LED_PIN LED_BUILTIN
#else
#define LED_PIN 13
#endif
#endif //defines_h


#ifndef Credentials_h
#define Credentials_h
#include "defines.h"
/// Start Default Config Data //////////////////
/*
#define SSID_MAX_LEN 32
//From v1.0.3, WPA2 passwords can be up to 63 characters long.
#define PASS_MAX_LEN 64
typedef struct
{
char wifi_ssid[SSID_MAX_LEN];
char wifi_pw [PASS_MAX_LEN];
} WiFi_Credentials;
#define NUM_WIFI_CREDENTIALS 2
// Configurable items besides fixed Header, just add board_name
#define NUM_CONFIGURABLE_ITEMS ( ( 2 * NUM_WIFI_CREDENTIALS ) + 1 )
////////////////
typedef struct Configuration
{
char header [16];
WiFi_Credentials WiFi_Creds [NUM_WIFI_CREDENTIALS];
char board_name [24];
int checkSum;
} WIFI_GENERIC_Configuration;
*/
#define TO_LOAD_DEFAULT_CONFIG_DATA false
#if TO_LOAD_DEFAULT_CONFIG_DATA
// This feature is primarily used in development to force a known set of values as Config Data
// It will NOT force the Config Portal to activate. Use DRD or erase Config Data with Blynk.clearConfigData()
// Used mostly for development and debugging. FORCES default values to be loaded each run.
// Config Portal data input will be ignored and overridden by DEFAULT_CONFIG_DATA
//bool LOAD_DEFAULT_CONFIG_DATA = true;
// Used mostly once debugged. Assumes good data already saved in device.
// Config Portal data input will be override DEFAULT_CONFIG_DATA
bool LOAD_DEFAULT_CONFIG_DATA = false;
WIFI_GENERIC_Configuration defaultConfig =
{
//char header[16], dummy, not used
"RP2040W_WIFI",
// WiFi_Credentials WiFi_Creds [NUM_WIFI_CREDENTIALS];
// WiFi_Credentials.wifi_ssid and WiFi_Credentials.wifi_pw
"SSID1", "password1",
"SSID2", "password2",
//char board_name [24];
"RP2040W-Control",
// terminate the list
//int checkSum, dummy, not used
0
/////////// End Default Config Data /////////////
};
#else
bool LOAD_DEFAULT_CONFIG_DATA = false;
WIFI_GENERIC_Configuration defaultConfig;
#endif // TO_LOAD_DEFAULT_CONFIG_DATA
/////////// End Default Config Data /////////////
#endif //Credentials_h


#ifndef dynamicParams_h
#define dynamicParams_h
#include "defines.h"
// USE_DYNAMIC_PARAMETERS defined in defined.h
/////////////// Start dynamic Credentials ///////////////
//Defined in <WiFiManager_RP2040W_Lite.h>
/**************************************
#define MAX_ID_LEN 5
#define MAX_DISPLAY_NAME_LEN 16
typedef struct
{
char id [MAX_ID_LEN + 1];
char displayName [MAX_DISPLAY_NAME_LEN + 1];
char *pdata;
uint8_t maxlen;
} MenuItem;
**************************************/
#if USE_DYNAMIC_PARAMETERS
#define MAX_BLYNK_SERVER_LEN 34
#define MAX_BLYNK_TOKEN_LEN 34
char Blynk_Server1 [MAX_BLYNK_SERVER_LEN + 1] = "account.duckdns.org";
char Blynk_Token1 [MAX_BLYNK_TOKEN_LEN + 1] = "token1";
char Blynk_Server2 [MAX_BLYNK_SERVER_LEN + 1] = "account.ddns.net";
char Blynk_Token2 [MAX_BLYNK_TOKEN_LEN + 1] = "token2";
#define MAX_BLYNK_PORT_LEN 6
char Blynk_Port [MAX_BLYNK_PORT_LEN + 1] = "8080";
#define MAX_MQTT_SERVER_LEN 34
char MQTT_Server [MAX_MQTT_SERVER_LEN + 1] = "mqtt.duckdns.org";
MenuItem myMenuItems [] =
{
{ "sv1", "Blynk Server1", Blynk_Server1, MAX_BLYNK_SERVER_LEN },
{ "tk1", "Token1", Blynk_Token1, MAX_BLYNK_TOKEN_LEN },
{ "sv2", "Blynk Server2", Blynk_Server2, MAX_BLYNK_SERVER_LEN },
{ "tk2", "Token2", Blynk_Token2, MAX_BLYNK_TOKEN_LEN },
{ "prt", "Port", Blynk_Port, MAX_BLYNK_PORT_LEN },
{ "mqt", "MQTT Server", MQTT_Server, MAX_MQTT_SERVER_LEN },
};
uint16_t NUM_MENU_ITEMS = sizeof(myMenuItems) / sizeof(MenuItem); //MenuItemSize;
#else
MenuItem myMenuItems [] = {};
uint16_t NUM_MENU_ITEMS = 0;
#endif //USE_DYNAMIC_PARAMETERS
#endif //dynamicParams_h



Debug Terminal output Samples

1. RP2040W_WiFi example on RP2040W

This is the terminal output when running RP2040W_WiFi example on RP2040W:

1.1 Open Config Portal

Start RP2040W_WiFi on RASPBERRY_PI_PICO_W with RP2040W WiFi
WiFiMulti_Generic v1.2.2
WiFiManager_RP2040W_Lite v1.6.0
[WG] Set CustomsStyle to : <style>div,input{padding:5px;font-size:1em;}input{width:95%;}body{text-align: center;}button{background-color:blue;color:white;line-height:2.4rem;font-size:1.2rem;width:100%;}fieldset{border-radius:0.3rem;margin:0px;}</style>
[WG] Set CustomsHeadElement to : <style>html{filter: invert(10%);}</style>
[WG] Set CORS Header to : Your Access-Control-Allow-Origin
[WG] Hostname=RP2040W-WiFi
LittleFS Flag read = 0xd0d01234
Flag read = 0xd0d01234
doubleResetDetected
Saving to DRD file : 0xd0d04321
Saving DRD file OK
LittleFS Flag read = 0xd0d04321
ClearFlag write = 0xd0d04321
[WG] Double Reset Detected
[WG] config.dat loading
[WG] LoadCfgFile 
[WG] OK
[WG] ======= Start Stored Config Data =======
[WG] Hdr=RP2040W-WIFI,SSID=HueNet1,PW=12345678
[WG] SSID1=HueNet2,PW1=12345678
[WG] BName=RP2040W
[WG] i=0,id=sv1,data=account.duckdns.org
[WG] i=1,id=tk1,data=token1
[WG] i=2,id=sv2,data=account.ddns.net
[WG] i=3,id=tk2,data=token2
[WG] i=4,id=prt,data=8080
[WG] i=5,id=mqt,data=mqtt.duckdns.org
[WG] CCSum=0x10a1,RCSum=0x10a1
[WG] LoadCredFile 
[WG] CrR:pdata=new_blynk.duckdns.org,len=34
[WG] CrR:pdata=new_token1,len=34
[WG] CrR:pdata=new_blynk.ddns.net,len=34
[WG] CrR:pdata=new_token2,len=34
[WG] CrR:pdata=8080,len=6
[WG] CrR:pdata=new_mqtt.duckdns.org,len=34
[WG] OK
[WG] CrCCsum=0x2034,CrRCsum=0x2034
[WG] Valid Stored Dynamic Data
[WG] Hdr=RP2040W-WIFI,SSID=HueNet1,PW=12345678
[WG] SSID1=HueNet2,PW1=12345678
[WG] BName=RP2040W
[WG] i=0,id=sv1,data=new_blynk.duckdns.org
[WG] i=1,id=tk1,data=new_token1
[WG] i=2,id=sv2,data=new_blynk.ddns.net
[WG] i=3,id=tk2,data=new_token2
[WG] i=4,id=prt,data=8080
[WG] i=5,id=mqt,data=new_mqtt.duckdns.org
[WG] Check if isForcedCP
[WG] LoadCPFile 
[WG] OK
[WG] bg: isForcedConfigPortal = false
[WG] bg:Stay forever in CP:DRD/MRD
[WG] clearForcedCP
[WG] SaveCPFile 
[WG] OK
[WG] SaveBkUpCPFile 
[WG] OK
[WG] Scanning Network
[WG] scanWifiNetworks: Done, Scanned Networks n = 10
[WG] Sorting
[WG] Removing Dup
[WG] WiFi networks found:
[WG] 1: HueNet, -51dB
[WG] 2: HueNet1, -24dB
[WG] 3: HueNet2, -51dB
[WG] 4: HueNetTek, -39dB
[WG] 5: SmartRG-02a2, -88dB
[WG] 6: ESP151CD5, -86dB
[WG] 7: Guest5655, -75dB
[WG] 8: DECO-5655, -85dB
[WG] 9: , -82dB
[WG] 10: FishTank, -90dB
[WG] SSID=RP2040W_51F485,PW=MyRP2040W_51F485
[WG] IP=192.168.42.1
[WG] s:millis() = 6153, configTimeout = 126153
F
Your stored Credentials :
Blynk Server1 = new_blynk.duckdns.org
Token1 = new_token1
Blynk Server2 = new_blynk.ddns.net
Token2 = new_token2
Port = 8080
MQTT Server = new_mqtt.duckdns.org
F
FFFFF[WG] 
h:UpdLittleFS
[WG] h:Rst

1.2 Got valid Credential from Config Portal, then connected to WiFi

Start RP2040W_WiFi on RASPBERRY_PI_PICO_W with RP2040W WiFi
WiFiMulti_Generic v1.2.2
WiFiManager_RP2040W_Lite v1.6.0
[WG] Set CustomsStyle to : <style>div,input{padding:5px;font-size:1em;}input{width:95%;}body{text-align: center;}button{background-color:blue;color:white;line-height:2.4rem;font-size:1.2rem;width:100%;}fieldset{border-radius:0.3rem;margin:0px;}</style>
[WG] Set CustomsHeadElement to : <style>html{filter: invert(10%);}</style>
[WG] Set CORS Header to : Your Access-Control-Allow-Origin
[WG] Hostname=RP2040W-WiFi
LittleFS Flag read = 0xd0d04321
Flag read = 0xd0d04321
No doubleResetDetected
Saving DOUBLERESETDETECTOR_FLAG to DRD file : 0xd0d01234
Saving DRD file OK
SetFlag write = 0xd0d01234
[WG] LoadCfgFile 
[WG] OK
[WG] ======= Start Stored Config Data =======
[WG] Hdr=RP2040W-WIFI,SSID=HueNet1,PW=12345678
[WG] SSID1=HueNet2,PW1=12345678
[WG] BName=RP2040W
[WG] i=0,id=sv1,data=account.duckdns.org
[WG] i=1,id=tk1,data=token1
[WG] i=2,id=sv2,data=account.ddns.net
[WG] i=3,id=tk2,data=token2
[WG] i=4,id=prt,data=8080
[WG] i=5,id=mqt,data=mqtt.duckdns.org
[WG] CCSum=0x10a1,RCSum=0x10a1
[WG] LoadCredFile 
[WG] CrR:pdata=new_blynk.duckdns.org,len=34
[WG] CrR:pdata=new_token1,len=34
[WG] CrR:pdata=new_blynk.ddns.net,len=34
[WG] CrR:pdata=new_token2,len=34
[WG] CrR:pdata=8080,len=6
[WG] CrR:pdata=new_mqtt.duckdns.org,len=34
[WG] OK
[WG] CrCCsum=0x2034,CrRCsum=0x2034
[WG] Valid Stored Dynamic Data
[WG] Hdr=RP2040W-WIFI,SSID=HueNet1,PW=12345678
[WG] SSID1=HueNet2,PW1=12345678
[WG] BName=RP2040W
[WG] i=0,id=sv1,data=new_blynk.duckdns.org
[WG] i=1,id=tk1,data=new_token1
[WG] i=2,id=sv2,data=new_blynk.ddns.net
[WG] i=3,id=tk2,data=new_token2
[WG] i=4,id=prt,data=8080
[WG] i=5,id=mqt,data=new_mqtt.duckdns.org
[WG] Check if isForcedCP
[WG] LoadCPFile 
[WG] OK
[WG] No WiFi. Trying to scan and reconnect
[WG] WiFi connected after time: 1
[WG] SSID:HueNet1,IP address:192.168.2.180
[WG] b:WOK
Stop doubleResetDetecting
Saving to DRD file : 0xd0d04321
Saving DRD file OK
LittleFS Flag read = 0xd0d04321
ClearFlag write = 0xd0d04321
H
Your stored Credentials :
Blynk Server1 = new_blynk.duckdns.org
Token1 = new_token1
Blynk Server2 = new_blynk.ddns.net
Token2 = new_token2
Port = 8080
MQTT Server = new_mqtt.duckdns.org
H[WG] r:Check&WLost                 <====== WiFi Lost, and auto-reconnected
[WG] r:WLost.ReconW
[WG] WiFi connected after time: 1
[WG] SSID:HueNet2,IP address:192.168.2.180
[WG] r:WOK
H

2. RP2040W_WiFi_MQTT on RP2040W

This is the terminal output when running RP2040W_WiFi_MQTT example on RP2040W:

2.1 Open Config Portal

Start RP2040W_WiFi_MQTT on RASPBERRY_PI_PICO_W with RP2040W WiFi
WiFiMulti_Generic v1.2.2
WiFiManager_RP2040W_Lite v1.6.0
[WG] Hostname=RP2040W-MQTT
LittleFS Flag read = 0xd0d01234
Flag read = 0xd0d01234
doubleResetDetected
Saving to DRD file : 0xd0d04321
Saving DRD file OK
LittleFS Flag read = 0xd0d04321
ClearFlag write = 0xd0d04321
[WG] Double Reset Detected
[WG] Invalid Stored WiFi Config Data
[WG] bg: isForcedConfigPortal = false
[WG] bg:Stay forever in CP:DRD/MRD
[WG] clearForcedCP
[WG] SaveCPFile 
[WG] SSID=RP2040W_51F485,PW=MyRP2040W_51F485
[WG] IP=192.168.42.1
Creating new WiFi client object OK
Creating new MQTT object OK
AIO_SERVER = io.adafruit.com, AIO_SERVERPORT = 1883
AIO_USERNAME = private, AIO_KEY = private
Creating new MQTT_Pub_Topic,  Temperature = private/feeds/Temperature
Creating new Temperature object OK
Temperature MQTT_Pub_Topic = private/feeds/Temperature
Creating new AIO_SUB_TOPIC, LED_Control = private/feeds/LED_Control
Creating new LED_Control object OK
LED_Control AIO_SUB_TOPIC = private/feeds/LED_Control
...

2.2 Got valid Credential from Config Portal, then connected to WiFi and AIO MQTT

Start RP2040W_WiFi_MQTT on RASPBERRY_PI_PICO_W with RP2040W WiFi
WiFiMulti_Generic v1.2.2
WiFiManager_RP2040W_Lite v1.6.0
[WG] Hostname=RP2040W-MQTT
LittleFS Flag read = 0xd0d04321
Flag read = 0xd0d04321
No doubleResetDetected
Saving DOUBLERESETDETECTOR_FLAG to DRD file : 0xd0d01234
Saving DRD file OK
SetFlag write = 0xd0d01234
[WG] CCSum=0x160c,RCSum=0x160c
[WG] CrCCsum=0x2236,CrRCsum=0x2236
[WG] Valid Stored Dynamic Data
[WG] ======= Start Stored Config Data =======
[WG] Hdr=RP2040W-WIFI,SSID=HueNet1,PW=12345678
[WG] SSID1=HueNet2,PW1=12345678
[WG] BName=RP2040W_MQTT
[WG] i=0,id=svr,data=io.adafruit.com
[WG] i=1,id=prt,data=1883
[WG] i=2,id=usr,data=user_name
[WG] i=3,id=key,data=aio_key
[WG] i=4,id=pub,data=/feeds/Temperature
[WG] i=5,id=sub,data=/feeds/LED_Control
[WG] con2WF:SSID=HueNet1,PW=12345678
[WG] con2WF:OK
[WG] IP=192.168.2.180
[WG] SSID=HueNet1,IP=192.168.2.180
[WG] b:WOK
Stop doubleResetDetecting
Saving to DRD file : 0xd0d04321
Saving DRD file OK
LittleFS Flag read = 0xd0d04321
ClearFlag write = 0xd0d04321

Creating new WiFi client object OK
Creating new MQTT object OK
AIO_SERVER = io.adafruit.com, AIO_SERVERPORT = 1883
AIO_USERNAME = user_name, AIO_KEY = aio_key
Creating new MQTT_Pub_Topic,  Temperature = user_name/feeds/Temperature
Creating new Temperature object OK
Temperature MQTT_Pub_Topic = user_name/feeds/Temperature
Creating new AIO_SUB_TOPIC, LED_Control = user_name/feeds/LED_Control
Creating new LED_Control object OK
LED_Control AIO_SUB_TOPIC = user_name/feeds/LED_Control

Connecting to WiFi MQTT (3 attempts)...
WiFi MQTT connection successful!
TW
Your stored Credentials :
AIO_SERVER = io.adafruit.com
AIO_SERVERPORT = 1883
AIO_USERNAME = user_name
AIO_KEY = aio_key
AIO_PUB_TOPIC = /feeds/Temperature
AIO_SUB_TOPIC = /feeds/LED_Control
TWTWTWTW TWTWTW


Debug

Debug is enabled by default on Serial. To disable, add at the beginning of sketch

/* Comment this out to disable prints and save space */
#define DEBUG_WIFI_WEBSERVER_PORT     Serial
#define WIFI_GENERIC_DEBUG_OUTPUT     Serial

#define _WIFI_GENERIC_LOGLEVEL_       4

#define DRD_GENERIC_DEBUG             true

Troubleshooting

If you get compilation errors, more often than not, you may need to install a newer version of the board's core, or this library version.

Sometimes, the library will only work if you update the WiFi module/shield firmware to the newer or older version because some function compatibility.



Issues

Submit issues to: WiFiManager_RP2040W_Lite issues



TO DO

  1. Support more boards, shields and libraries
  2. Bug Searching and Killing

DONE

  1. Add support to RP2040W built-in CYW43439 WiFi using arduino-pico core
  2. More flexible to configure reconnection timeout.
  3. For fresh config data, don't need to wait for connecting timeout before entering config portal.
  4. If the config data not entered completely (SSIDs, Passwords, etc.), entering config portal
  5. Add configurable Config Portal IP, SSID and Password
  6. Change Synch XMLHttpRequest to Async
  7. Add configurable Static IP, GW, Subnet Mask and 2 DNS Servers' IP Addresses.
  8. Add checksums
  9. Add MultiWiFi features with auto(re)connect
  10. Easy-to-use Dynamic Parameters without the necessity to write complicated ArduinoJSon functions
  11. Permit to input special chars such as % and # into data fields.
  12. Default Credentials and dynamic parameters
  13. DoubleDetectDetector to force Config Portal when double reset is detected within predetermined time, default 10s.
  14. Configurable Config Portal Title
  15. Re-structure all examples to separate Credentials / Defines / Dynamic Params / Code so that you can change Credentials / Dyamic Params quickly for each device.
  16. Add Table of Contents and Version String
  17. Configurable Customs HTML Headers, including Customs Style, Customs Head Elements, CORS Header
  18. Add functions to control Config Portal from software or Virtual Switches.
  19. Permit optionally inputting one set of WiFi SSID/PWD by using REQUIRE_ONE_SET_SSID_PW == true
  20. Enforce WiFi Password minimum length of 8 chars
  21. Enable scan of WiFi networks for selection in Configuration Portal
  22. Add LibraryPatches for Adafruit_MQTT_Library to fix compiler error for RP2040W, RP2040-based and many other boards.
  23. Fix the blocking issue in loop() with configurable WIFI_RECON_INTERVAL
  24. Workaround for core WiFi.status() bug, which does not detect WiFi lost.
  25. Use WiFiMulti_Generic library to connect to the best of multi-WiFi APs, with auto-checking / auto-reconnecting features when WiFi connection is lost
  26. Add lib_ldf_mode = chain+ in platformio.ini


Contributions and Thanks

Please help contribute to this project and add your name here.


Contributing

If you want to contribute to this project:

  • Report bugs and errors
  • Ask for enhancements
  • Create issues and pull requests
  • Tell other people about this library

License

  • The library is licensed under MIT

Copyright

Copyright 2022- Khoi Hoang

About

Light-Weight MultiWiFi/Credentials Manager for RP2040W boards using built-in CYW43439 WiFi. Powerful-yet-simple-to-use feature to enable adding dynamic custom parameters. Library to configure MultiWiFi/Credentials at runtime for RP2040W boards, using CYW43439 WiFi. You can also specify DHCP HostName and STA IP. Use much less memory compared to f…

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