khoih-prog
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https://github.com/khoih-prog/ESP_AT_WiFiManager
How To Install Using Arduino Library Manager
This library is a Credentials / WiFi Connection Manager with fallback web configuration portal similar to other WiFiManagers
1. Tzapu WiFiManager
2. Ken Taylor WiFiManager
3. ESP_WiFiManager
This library supports Teensy, SAM DUE, SAMD, STM32, etc. boards running ESP8266 AT-command shields.
The web configuration portal, served from the ESP8266 AT-command shields is operating as an access point (AP) with configurable static IP address or use default IP Address of 192.168.4.1
Sample Code
This is the terminal output when running Teensy 4,0 board with ESP8266 AT shield
And the Config Portal screens:
How To Install Using Arduino Library Manager
This library is a Credentials / WiFi Connection Manager with fallback web configuration portal similar to other WiFiManagers
1. Tzapu WiFiManager
2. Ken Taylor WiFiManager
3. ESP_WiFiManager
This library supports Teensy, SAM DUE, SAMD, STM32, etc. boards running ESP8266 AT-command shields.
The web configuration portal, served from the ESP8266 AT-command shields is operating as an access point (AP) with configurable static IP address or use default IP Address of 192.168.4.1
Sample Code
Code:
#define _ESP_AT_LOGLEVEL_ 0
#define DEBUG_WIFIMGR true //false
#if ( defined(STM32F0) || defined(STM32F1) || defined(STM32F2) || defined(STM32F3) ||defined(STM32F4) || defined(STM32F7) )
#if defined(ESP8266_AT_USE_STM32)
#undef ESP8266_AT_USE_STM32
#endif
#define ESP8266_AT_USE_STM32 true
#endif
#if ( defined(ARDUINO_SAM_DUE) || defined(__SAM3X8E__) )
#if defined(ESP8266_AT_USE_SAM_DUE)
#undef ESP8266_AT_USE_SAM_DUE
#endif
#define ESP8266_AT_USE_SAM_DUE true
#endif
#if ( defined(ARDUINO_SAMD_ZERO) || defined(ARDUINO_SAMD_MKR1000) || defined(ARDUINO_SAMD_MKRWIFI1010) \
|| defined(ARDUINO_SAMD_NANO_33_IOT) || defined(ARDUINO_SAMD_MKRFox1200) || defined(ARDUINO_SAMD_MKRWAN1300) || defined(ARDUINO_SAMD_MKRWAN1310) \
|| defined(ARDUINO_SAMD_MKRGSM1400) || defined(ARDUINO_SAMD_MKRNB1500) || defined(ARDUINO_SAMD_MKRVIDOR4000) || defined(__SAMD21G18A__) \
|| defined(ARDUINO_SAMD_CIRCUITPLAYGROUND_EXPRESS) )
#if defined(ESP8266_AT_USE_SAMD)
#undef ESP8266_AT_USE_SAMD
#endif
#define ESP8266_AT_USE_SAMD true
#endif
#ifdef CORE_TEENSY
// For Teensy 4.0
#define EspSerial Serial2 //Serial2, Pin RX2 : 7, TX2 : 8
#if defined(__IMXRT1062__)
#define BOARD_TYPE "TEENSY 4.0"
#elif ( defined(__MKL26Z64__) || defined(ARDUINO_ARCH_AVR) )
#define BOARD_TYPE "TEENSY LC or 2.0"
#else
#define BOARD_TYPE "TEENSY 3.X"
#endif
#elif (ESP8266_AT_USE_SAMD)
// For SAMD
#define EspSerial Serial1
#if defined(ARDUINO_SAMD_ZERO)
#define BOARD_TYPE "SAMD Zero"
#elif defined(ARDUINO_SAMD_MKR1000)
#define BOARD_TYPE "SAMD MKR1000"
#elif defined(ARDUINO_SAMD_MKRWIFI1010)
#define BOARD_TYPE "SAMD MKRWIFI1010"
#elif defined(ARDUINO_SAMD_NANO_33_IOT)
#define BOARD_TYPE "SAMD NANO_33_IOT"
#elif defined(ARDUINO_SAMD_MKRFox1200)
#define BOARD_TYPE "SAMD MKRFox1200"
#elif ( defined(ARDUINO_SAMD_MKRWAN1300) || defined(ARDUINO_SAMD_MKRWAN1310) )
#define BOARD_TYPE "SAMD MKRWAN13X0"
#elif defined(ARDUINO_SAMD_MKRGSM1400)
#define BOARD_TYPE "SAMD MKRGSM1400"
#elif defined(ARDUINO_SAMD_MKRNB1500)
#define BOARD_TYPE "SAMD MKRNB1500"
#elif defined(ARDUINO_SAMD_MKRVIDOR4000)
#define BOARD_TYPE "SAMD MKRVIDOR4000"
#elif defined(ARDUINO_SAMD_CIRCUITPLAYGROUND_EXPRESS)
#define BOARD_TYPE "SAMD ARDUINO_SAMD_CIRCUITPLAYGROUND_EXPRESS"
#elif ( defined(__SAM3X8E__) || (__SAM3X8E__) || (__CPU_ARC__) )
#define BOARD_TYPE "SAMD Board"
#else
#define BOARD_TYPE "SAMD Unknown"
#endif
#elif (ESP8266_AT_USE_SAM_DUE)
// For SAM DUE
#define EspSerial Serial1
#define BOARD_TYPE "SAM DUE"
#elif (ESP8266_AT_USE_STM32)
// For STM32F
#define EspSerial Serial1
#define BOARD_TYPE "STM32F"
#else
// For other boards. Change Serial as necessary
#define EspSerial Serial3
#define BOARD_TYPE "Unknown"
#endif
// Must be before #include <ESP_AT_WiFiManager.h>
#define EEPROM_START 0
#include <ESP_AT_WiFiManager.h> //https://github.com/khoih-prog/ESP_AT_WiFiManager
// Your Mega <-> ESP8266 baud rate:
#define ESP8266_BAUD 115200
// SSID and PW for Config Portal
#ifdef CORE_TEENSY
String ssid = "ESP_AT_" + String(0x1ABCDEF, HEX);
#else
String ssid = "ESP_AT_" + String(0xABCDEF, HEX);
#endif
const char* password = "ESP_AT_PW";
IPAddress staticAP_IP = IPAddress(192,168,100,1);
// SSID and PW for your Router
String Router_SSID;
String Router_Pass;
// Onboard LED I/O pin on board
const int LOCAL_PIN_LED = 13; // Pin 13, Controls the onboard LED.
#define LED_ON HIGH
#define LED_OFF LOW
void heartBeatPrint(void)
{
static int num = 1;
if (WiFi.status() == WL_CONNECTED)
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 10000L
// Print hearbeat every HEARTBEAT_INTERVAL (10) seconds.
if ((millis() > checkstatus_timeout) || (checkstatus_timeout == 0))
{
heartBeatPrint();
checkstatus_timeout = millis() + HEARTBEAT_INTERVAL;
}
}
void enterConfigPortal(void)
{
//Local intialization. Once its business is done, there is no need to keep it around
ESP_AT_WiFiManager ESP_AT_wiFiManager;
ESP_AT_wiFiManager.setDebugOutput(true);
ESP_AT_wiFiManager.setMinimumSignalQuality(-1);
ESP_AT_wiFiManager.setAPChannel(1);
// Default AP IP is 192.168.4.1. Uncomment to use different AP IP
ESP_AT_wiFiManager.setAPStaticIPConfig(staticAP_IP);
// Set static STA IP
ESP_AT_wiFiManager.setSTAStaticIPConfig(IPAddress(192,168,2,114));
//Check if there is stored WiFi router/password credentials.
//If not found, device will remain in configuration mode until switched off via webserver.
Serial.print("Opening Config Portal. ");
Router_SSID = ESP_AT_wiFiManager.WiFi_SSID();
Router_Pass = ESP_AT_wiFiManager.WiFi_Pass();
if (Router_SSID != "")
{
ESP_AT_wiFiManager.setConfigPortalTimeout(60); //If no access point name has been previously entered disable timeout.
Serial.println(F("Got stored Credentials. Timeout 60s"));
}
else
Serial.println(F("No stored Credentials. No timeout"));
// SSID to uppercase
ssid.toUpperCase();
//Starts an AP and goes into a blocking loop awaiting configuration
Serial.println("Start Config Portal, SSID = " + ssid + ", Pass = " + password);
digitalWrite(LOCAL_PIN_LED, LED_ON); // Turn led on as we enter Config Portal
if (!ESP_AT_wiFiManager.startConfigPortal((const char *) ssid.c_str(), password))
Serial.println(F("Not connected to WiFi but continuing anyway."));
else
Serial.println(F("WiFi connected...yeey"));
digitalWrite(LOCAL_PIN_LED, LED_OFF); // Turn led off as we exit Config Portal
}
void setup()
{
// put your setup code here, to run once:
// initialize the LED digital pin as an output.
pinMode(LOCAL_PIN_LED, OUTPUT);
digitalWrite(LOCAL_PIN_LED, LED_ON); // turn the LED on by making the voltage LOW to tell us we are in configuration mode.
Serial.begin(115200);
unsigned long startedAt = millis();
delay(200);
Serial.println("\nStart ConfigOnStartup on " + String(BOARD_TYPE));
// initialize serial for ESP module
EspSerial.begin(115200);
// initialize ESP module
WiFi.init(&EspSerial);
// check for the presence of the shield
if (WiFi.status() == WL_NO_SHIELD)
{
Serial.println(F("WiFi shield not present"));
// don't continue
while (true);
}
enterConfigPortal();
// For some unknown reason webserver can only be started once per boot up
// so webserver can not be used again in the sketch.
#define WIFI_CONNECT_TIMEOUT 30000L
#define WHILE_LOOP_DELAY 200L
#define WHILE_LOOP_STEPS (WIFI_CONNECT_TIMEOUT / ( 3 * WHILE_LOOP_DELAY ))
startedAt = millis();
while ( (WiFi.status() != WL_CONNECTED) && (millis() - startedAt < WIFI_CONNECT_TIMEOUT ) )
{
int i = 0;
while((!WiFi.status() || WiFi.status() >= WL_DISCONNECTED) && i++ < WHILE_LOOP_STEPS)
{
delay(WHILE_LOOP_DELAY);
}
}
Serial.print(F("After waiting "));
Serial.print((millis()- startedAt) / 1000);
Serial.print(F(" secs in setup(), connect result is "));
if (WiFi.status() == WL_CONNECTED)
{
Serial.print(F("connected. Local IP: "));
Serial.println(WiFi.localIP());
}
}
void loop()
{
// put your main code here, to run repeatedly
check_status();
}This is the terminal output when running Teensy 4,0 board with ESP8266 AT shield
Code:
Start ConfigOnSwitch on TEENSY 4.0
Opening Config Portal. *WM: Header = ESP_AT, SSID = ****, PW = ****
*WM: Host Name = nothing
Got stored Credentials. Timeout 60s
Start Config Portal, SSID = ESP_AT_1ABCDEF, Pass = ESP_AT_PW
*WM: Configure AP: ESP_AT_1ABCDEF
*WM: AP PW: ESP_AT_PW
*WM: Custom AP IP: 192.168.100.1
*WM: AP IP: 192.168.100.1
*WM: HTTP server on channel 1
*WM: Handle root
*WM: Info
*WM: Sent info page
*WM: Handle root
*WM: Handle WiFi
*WM: Scan Network
*WM: HueNet / -28
*WM: HueNet1 / -41
*WM: HueNet2 / -59
*WM: Sent config page
*WM: WiFi save
*WM: Sent wifisave page
*WM: Connect to new AP
*WM: Connect wifi with new params
*WM: Data cleared
*WM: Static IP : 192.168.2.114
*WM: Connect result: WL_CONNECTED
WiFi connected...yeey
After waiting 0 secs in setup(), connect result is connected. Local IP: 192.168.2.114
HHHHHHHHHH HHHHHHHHHH HHHHHHHHHH HHHHHHHHHH HHHHHHHHHH HHHHHHHHHH HHHHHHHHHH HHHHHHHHHH
HHHHHHHHHH HHHHHHHHHH HHHHHHHHHH HHHHHHHHHH HHHHHHHHHH HHHHHHHHHH HHHHHHHHHH HHHHHHHHHHAnd the Config Portal screens:
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