h header file must be included in order to use the delay library function: #include <util/delay. * * This example also provides the firmware update option. One of them, ADC2, is actively used by the WiFi. lienbacher. 1 Sync Time with NTP Service from a server and set the local clock in the ESP32 (this is well documented and working) 2 Read current usecond till next sec, register a Timer#1 to Trigger when the second arrives. The time module provides the following time, date, and delay-related functions. Examples of non-blocking operations include non-blocking send (synchronous) and CLFLUSHOPT. Click the Debugger tab. bool ledcAttach(uint8_t pin, uint32_t freq, uint8_t resolution); pin select LEDC pin. Yhe Serial Monitor on PC receives the data and display it. A blocking read will wait until data has arrived or until an exception occurs, while a non-blocking read will return immediately with or without data. - GitHub - Treboada/AsyncBlinker: Non-blocking C/C++ library to manage blinking devices (for example, a. You don't need any task at all for your functionality, you just need a timer to perform the closing activity after 6000 ms. Now that I have the control of NTP sync procedure, it would be a very nice feature to add non blocking NTP request. UDP socket non-blocking. Sure, there might be timing issues which could cause problems with very sensitive real time processes - maybe a ~10 ms delay somewhere but you wouldn't see this from blinking LEDs with a naked eye. A fade can be operated in blocking or non-blocking mode, please check ledc_fade_mode_t for the difference between the two available fade modes. Which makes 'loopDelay' a stupid name 'SerialInterval' is more appropriate. The principle is easy to describe but there are some gotchas along the way that you need to look out for. (I'd been hoping for a delay(5), not a delay(0). This library enables you to use 1 Hardware Timer on an ESP32_C3-based board to control up to 16 independent servo motors. For that, we will configure and attach a. Introduction. You could also do a loop within the loop to poll sensor data. A non-blocking read will (or at least should) always return immediately, but it might not return any data, if none is available at the moment. The basic principle of non-blocking timing is fundamental different from using delay () You have to understand the difference first and then look into the code. ESP32 - LED - Blink Without Delay; ESP32 - LED - Fade; ESP32 - RGB LED; ESP32 - Traffic Light; ESP32 - LED Matrix; ESP32 - LED Matrix via Web; ESP32 - Potentiometer; ESP32 - Potentiometer fade LED;. 0. The orginal poster was using while(1); to deliberately block everything because there was an error, but the WDT was firing. The non-blocking interface call does not block the current process, while the blocking interface does. 625º—so it needs 360º/5. The Arduino millis () is a timer-based function that returns to you the time elapsed (in milliseconds) since the Arduino board was powered up. IotWebConf will start up in AP (access point) mode, and provide a config portal for entering WiFi connection and other user-settings. The last step in this instructable. ino. Discover a diverse selection of 009 Esp32 Micropython Non Blocking Delays And Multi Threading advertisements on our high-quality marketplace. 5 seconds; Power off the LED; Use delay(500) to make the program sleep again for 0. Channel state information (CSI) leverages carrier signal strength,. Send it a message from another task to change the delay time. Important Notes about using ISR. ESP32 Timers. All these buttons are connected to each other in a form of 4X4 matrix in row and column arrangement. micros() and overflow. I've searched for the past 3 days on the internet for connecting to a WiFi network without blocking the code and after the connection is established, to connect to Firebase (also in a non-blocking fashion), but I can't make it work. I have pinned one task to each core with infinite loops. Although i power the sensor in non-parasitic mode, there are still delays necessary. I'm developing high frequency DAQ based on ESP32 and freeRTOS. Delay () Delay is an arduino function wrapper that calls vtaskdelay. Here we discuss how to use millis() and micros() and their major advantages compared to delay(). First of all, you don't want to delay the loop() ever. run() blocks when there's no Internet connection:. INCLUDE_vTaskDelay must be defined as 1 for this function to be available. We’ll discuss a couple of ways to achieve this. Interrupt based movement (movement without calling update() manually in a loop) is supported for the following Arduino architectures: avr, megaavr, sam, samd, esp8266, esp32, stm32, STM32F1 and apollo3. IotWebConf will start up in AP (access point) mode, and provide a config portal for entering WiFi connection and other user-settings. configure MQTT callback in non blocking mode for esp32 using esp-idf 4. print("Attempting to. You'll see blynkTimer Software is blocked while system is connecting to WiFi / Internet / Blynk, as well as by blocking task in loop(), using delay() function as an example. h> Servo myservo; void setup() { // Initialize serial and wait for port to open: Serial. How to connect to a WiFi network with the ESP32 (Updated at 01/20/2023) The built-in WiFi. ino","path":"WiFi_nonBlocking/WiFi_nonBlocking. 2. It keeps track of the elapsed time since the start of the delay or cycle and is non-blocking. Each of those can be assigned to any PWM-capable pin. The millis () approach wouldn't work well. ESP32 Classic Bluetooth has two protocols, namely A2DP and SPP. As we know by now, analogWrite does not actually drive an analog voltage to the specified pin but, instead, uses pulse-width modulation (PWM). Most of the developers of esp12 or esp32 architectures either hard code the wifi credentials or use the famous WiFi manager [1]. First of all, you don't want to delay the loop() ever. setblocking(False) is equivalent to sock. I am using an ESP32-WROOM-32 Development Board (30 pin version) with Platformio (CLion version). I think it's in the _client->connect at the start of the method. Hi all, I am using ESP32 to do a project by using delay() function. The exact hardware timer implementation used depends on the target, where LAC. vTaskDelay() is a non-blocking delay, it let's other threads to continue working. I thought setting ". Getting Date and Time from NTP Server. com. The issue is that to get the distance from the ultrasonic, you need to perform small delays over the code. The code to use client just sets the post data and calls. EveryTimer: A library providing the possibility to call a function at specific time intervals. You signed out in another tab or window. You should copy it and use it here. This next sketch shows you how to write a non-blocking delay that allows the code to continue to run while waiting for the delay to expire. I'm unclear as to what is going on with it. one that completely stopped the code from doing any thing else while the delay was waiting to expire. IoTtweetESP32: A library that makes Internet of Things send data and control on IoTtweet. สาธิตวิธีการใช้เซนเซอร์วัดระดับน้ำแบบไร้สัมผัส รุ่น XKC-Y25-PNP ร่วมกับ Arduino Nano หรือ ESP32 เพื่อวัดระดับน้ำแบบไม่ต้องติดตั้งให้สัมผัส. Built on ESPAsyncTCP (AsyncTCP for ESP32) Methods similar in format and use to XmlHTTPrequest in Javascript. This seems to be working but the tcp send call frequently stalls for as much as 2ms when I call it. However, the problem is, the delay () function is not. While RAM often ends up scarce on an. The maximum MTU Size setting of BT A2DP (default) is 1008 bytes, of which the header occupies 12 bytes and the actual amount of data transmitted by the application layer is 1008 - 12 = 996 (bytes); the maximum MTU Size of BT SPP (default) Set to 990 bytes. I2C (Inter-Integrated Circuit) / TWI (Two-wire Interface) is a widely used serial communication to connect devices in a short distance. On the other hand , uint8_t is unsigned. I2S (Inter-IC Sound), is an electrical serial bus interface standard used for connecting digital audio devices together. The Wi-Fi driver can be considered a black box that knows nothing about high-layer code, such as the TCP/IP stack, application task, and event task. ESP32: sampling a 1 kHz square wave (10%-90% duty cycle) with analogRead() 0. Connect the STEP pin and the DIR pin with any appropriate GPIO pin of ESP32 board. Created by Espressif Systems, ESP32 is a low-cost, low-power system on a chip (SoC) series with Wi-Fi & dual-mode Bluetooth capabilities! The ESP32 family includes the chips ESP32-D0WDQ6 (and ESP32-D0WD), ESP32-D2WD, ESP32-S0WD, and the system in package (SiP) ESP32-PICO-D4. It uses a non-blocking approach and can control LEDs in simple ( on / off) and complex ( blinking , breathing and more) ways in a time-driven manner. The timing of these timers depends upon the clock and varies from one board to the other. there is a new visualisisation how non-blocking code works. THE TICK is a new Netflix show. SafeStringStream, a stream to provide test inputs for repeated testing of I/O sketches. I'm still working on getting an ESP32 to RE-sync with an NTP-server when coming back from deepsleep. (This is what my understanding is, I might be incorrect as well. Actually the Particle’s do have hardware timers, but. Hello together, I’m using the Pololu - VNH5019 Motor Driver Carrier to control a 12v motor with an ESP32. At the moment, you seem stuck with an approach where you have to fight the RTOS. Is there. It does not interact with RTOS and calling it will actually block everything for 100ms, if it is called from higest-priority task. Please take note that the previous code utilizes the delay() function, which is straightforward to understand. In general: no, gethostbyname *cannot* be non-blocking as it uses DNS to resolve a hostname, which involves sending UDP packets to a DNS server and waiting for a reply. It is used to communicate PCM audio data between integrated circuits in an electronic device. The time module provides the following time, date, and delay-related functions. #include #include. SPI Master driver is a program that controls ESP32’s General Purpose SPI (GP-SPI) peripheral(s) when it functions as a master. i do not need very fast measuring intervals (e. h library, download the library from. I am trying to create my own delay function but my sketch keeps crashing. So, I've used this program for ESP32 to connect to WiFi network - #include <Arduino. There will be a delay between the input changing state and your interrupt routine getting control. These functions are generated with the Thing and added at the end of this sketch. No blocking. The testcode used delay() in the mainloop. I tried to archiv the same result with millis (), but until now i could not make it. Have visual indicator of being in. This particular task trigger allows multiple tasks to be triggered at the same time. Sorted by: 8. The ESP8266 server uses the connected router’s IP address. Ideally, task 2 should send data while task 1 collecting latest one. Consult the datasheet of your microcontroller if you’re using a non-AVR MCU. This is the better option when executing multiple tasks, which is usually the case in FreeRTOS. Non-blocking MQTT library. one that completely stopped the code from doing any thing else while the delay was waiting to expire. At first glance you may doubt the usefulness of this function. Update 6th Jan 2021 – loopTimer class now part of the SafeString library (V3+) install it from Arduino Library manager or from its zip file. Browse 009 Esp32 Micropython Non Blocking Delays And Multi Threading buy items, services, and more in your neighborhood area. . Thus, all ESP-IDF applications and many ESP-IDF components are written based on FreeRTOS. See the RTOS Configuration documentation for more information. If you are using an Arduino with an ATmega328 (Uno, Ethernet) or an a. 1. Share. time. The detail instruction, code, wiring diagram, video tutorial, line-by-line code explanation are provided to help you quickly get started with ESP32. However, the output shaft is driven via a 64:1 gear ratio. i think it would. . Note that with either fade mode, the next fade or fixed-duty update will. Arduino library to easily use on/off delays and cycle timers with non-blocking functions. py. Another restrain is speed as this loop work at 5ms and i would like to use the core 0. How to write a non-blocking delay in Arduino. The time setting can be done manually through a network protocol or a battery backup. As the website says: This is a “smart” asynchronous delay - other code will still run in the background while the delay is happening. Get(); // Get the current delay. Wait(); Reset delay timer right now. begin(9600); // This delay gives the chance to wait for a Serial Monitor without blocking if none is found delay(1500); myservo. Non blocking behavior can always be achieved manually by calling update() or updateAllServos() in a loop - see ThreeServos example. void moveRelativeInRevolutions(float distanceToMoveInRevolutions) Blocking call: start relative movement with given number of revolutions. Thus, we need to check if the client is indeed connected, either by calling the connected method on the returned object and checking its value or directly using the returned object on a IF. answered Mar 10, 2011 at 17:11. Here “ Adafruit_NeoPixel. Navigate to the zip file you downloaded and select it. Best power transistor for a high PWM output from ESP32. Blocking functions will use the delay utility which we’ll develop today. So I adapted your demo-code to this and got a continious reset each time the ESP8266 just connected to my router. system February 16, 2009, 4:57pm 6. in general this is exactly how a "Blink without delay" is done. h library in your code, as follows: #include <WiFi. It will be the first component of a larger project I'm going to implement. compare if currentMillis-pressMillis > 8000, if then shut the led. Gotta be something to do with that register you set, or the setcrystal thing or one of those libraries. _delay_ms is (most probably) AVR implementation for delay. ) ie the send buffer size in bytes is the parameter value. Note how simple it looks compared to the delay timer non-blocking method, and it works! Copy SketchThe latest commit to the RMT code (8ff3520) – to zero out the newly initialised rmt_config_t object – is causing panics for me on ESP32 devices when I start a second looping RMT channel. Includes SafeStringReader: non-blocking tokenizing text reader, BufferedOutput: non-blocking text output, BufferedInput: extra buffering for text input, loopTimer: track of the maximum and average run times for the loop, PinFlasher: non-blocking flashing on an output Pin and millisDelay: a non-blocking delay, with single. A non-blocking operation can be either synchronous or asynchronous. everytime: A easy to use library for periodic code execution. Arduino - delay () function. Unless it is a linear and very simple program , do not use this. A WiFiManager alternative. exists() and. The code above works without delay(). Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. I know this isn't a simple "drop-in" suggestion, but maybe you can look. The whole idea is to avoid using millis() function and not blocking each iteraction of the list. This number represents the time (measured in milliseconds). To change it unblocking you must in the loop, in each round: if btn pressed store the pressMillis, lit the led. The detail instruction, code, wiring diagram, video tutorial, line-by-line code explanation are provided to help you quickly get started with ESP32. FreeRTOS is a portable, open source, mini Real Time kernel. I want it to port to a Non-Blocking code. This means that the shaft (visible. I have noticed a weird effect, mabye somebody have noticed too this effect - after 30. If you need multiple tasks to occur at the same time, you cannot use delay(). 3 In the callback function of the Timer#1 start Timer #2 with the interval of 1 sec. This seems to be working but the tcp send call frequently stalls for as much as 2ms when I call it. In the task void fDoParticleDetector( void * parameter ), I have a 280us delay, not using delay(), millis() and delayMicroseconds(). C. h>. * The thing will delay actions arriving within 7 seconds. knightridar:That is the firmware. This xEventGroupWaitBits (eg, evtDoTheBME280Thing, pdTRUE, pdTRUE, portMAX_DELAY ); is a task trigger. ESP8266/ESP32 non-blocking WiFi/AP web configuration Arduino library - IotWebConf/IotWebConf07MqttRelay. You'll see blynkTimer Software is blocked while system is connecting to WiFi / Internet / Blynk, as well as by blocking task in loop(), using delay() function as an example. – tavis. esp32h2","path":"libraries/WiFi/examples/WiFiScan. Then it has to go in an infinite loop to control a motor position. I tried to archiv the same result with millis (), but until now i could not make it. See the RTOS Configuration documentation for more information. However, be aware that micros() will overflow after approximately 70 minutes, compared to millis()'s 50 days. In the previous tutorial, we learned to blink LED by using the delay method. Delay() is widely known as a blocking (or synchronous) function call. These targets have the following hardware features that make them SMP-capable: Two identical cores are known as CPU0 and CPU1. Ideally, task 2 should send data while task 1 collecting latest one. Which means the freeRTOS task switcher will swap to another task during the delay, non-blocking. The Ticker library allows to very easily setup callback functions to run periodically, without having to worry about the lower level details of setting up a timer (you can check an example on how to setup timer. Which means the freeRTOS task switcher will swap to another task during the delay, non-blocking. To get date and time with the ESP32, you don’t need to install any libraries. Find this and other ESP32 tutorials on ESP32GetStarted. An ESP32 timer group should be identified using timer_group_t. Then, each time through. Beginner in Arduino and ESP-32 needs help. function codes implemented:Returns: pdTRUE if the semaphore was obtained. 0 If connection establishment is in progress. This function is used to setup LEDC pin with given frequency and resolution. one that completely stopped the code from doing anything else while the delay was waiting to expire. I was able to get the current date and time by polling NTP servers and using struct tm and getLocalTime() function. . This means that the shaft (visible. But what if another function is blocking the loop() or setup(). moveTo function is non-blocking. ESP32Time: Set and retrieve internal RTC time on ESP32 boards. uint32_t. wifi scan in non-blocking mode. The delay time can set in micro-seconds or milli-seconds. Using BLDC. There will be 2 task, first task will run on core 0, communicating with sensors to collect data at 4000SPS, using SPI bus. feather_esp32s2. After login, click on ‘+ Create New Instance’ to create a new instance. Every example I see requires the use of millis () but I need an accurate, 100uSec, non-blocking ISR driven. If you’re running from a 12-16 MHz internal clock, the 16 bit timer doesn’t give you much of a delay. This non-being-blocked important feature is absolutely necessary for mission-critical tasks. I would then create a global message queue using the native environment to receive messages/events from other parts of the system. The resolution of the PWM signal is also configurable. Another benefit millis()is that it doesn't prevent us from running code while "waiting". Which means things like IRAM_ATTR need to be used in interrupt services. I am trying to create my own delay function but my sketch keeps crashing. IotWebConf. Just like a hardware interrupt the timer interrupts are also the best way to run non-blocking functions at a certain interval. That coro will pause until all non-waiting coros have passed the barrier, and all waiting coros have reached it. I have the socket setup in non blocking mode with : err = fcntl (sock, F_SETFL , O_NONBLOCK ); and for good measure I do the send call with: err = send (sock, tempbuf, tempbuflen, MSG_DONTWAIT ); I time the. This guide also includes a comparison of vTaskDelay () function provided by FreeRTOS with. The SPI controller peripheral external to ESP32 that initiates SPI transmissions over the bus, and acts as an SPI Master. I haven't measured this, but it wouldn't be surprising if this was a few tens of microseconds. The HX711 amplifier is a breakout board that allows you to easily read load cells to measure weight. avr, esp8266, esp32 The NoDelay library is used as a easy interface for using the built-in Mills function for keeping track of elapsed time and used for non. Otherwise, if your ESP32 sometimes connects to the Wifi network almost immediately and sometimes it doesn’t seem to connect at all, use this code instead to automatically reset the ESP32 if it doesn’t connect within 5 seconds: fix-esp32-not-connecting-to-the-wifi-network. ESP32 - LED - Blink Without Delay. I would like to break this second loop when the stop button is pressed. I would like to write my own function to create a delay in a FreeRTOS task, without. edit: here is a short description of the slow servo sketch. pdFALSE if xTicksToWait expired without the semaphore becoming available. do the other actions. That method blocks Arduino from doing other tasks. ESP8266/ESP32 non-blocking WiFi/AP web configuration. Hello community, I made a function that should be able to create a delay for a certain number of microseconds, here the code. The constant portTICK_PERIOD_MS can be used to calculate real time from the tick rate - with the resolution of one tick period. Delays. Describe the solution you'd like. A common way for a sketch to stall is the use of a delay. Task 2 will run on core 1, receiving data from first task and send it async over TCP. May 10, 2021 at 23:29. Always use RTOS based delay function. This is called a non-blocking delay timer. So, my RealTime Worry is: ESP32 co-hosting Wifi, Server, engine/generator controller state machine, with needed delays and timeout checks. (in ms) delay before toggling LED . Using delay on a ESP32 whiles using freeRTOS is a waste of CPU time. ESP32-WROOM-32 PWD with millis. 11. If you don’t know the IP of your your ESP32 in your local network, we will print it later on the Arduino code. UDP packets can get lost and DNS servers can be slow to respond, so there has to be some amount of retransmits and waiting to see if there is a response as part of the process. The following code gets date. Host. Return-1 If connection establishment fails. This can be solved by using, in the main loop, a if statement and the millis () function that returns a time (not a clock time, but rather the time since the Arduino started). The ESp32 is a multicore device by using delay(500);, you are bringing the ESP32 to a stop. For example, certain function is blocking while it's connecting to WiFi or some services. The time setting can be done manually through a network protocol or a battery backup. This next sketch shows you how to write a non-blocking delay that allows the code to continue to run while waiting for the delay to expire. In FreeRTOS, there are a few ways to delay the execution of a function: vTaskDelay() allows us block the currently running task for a set amount of time (given in ticks). Ideally, task 2 should send data while task 1 collecting latest one. The second core is not impacted by the cycles used for connecting WiFi but you will need to consider whether you need. Hello together, I’m using the Pololu - VNH5019 Motor Driver Carrier to control a 12v motor with an ESP32. e. etc there are an easy to use example-codes for non-blocking timing for things that shall happen after a certain interval like. Messages with QoS 0 is sent only once. The NoDelay library is used as a easy interface for using the built-in Mills function for keeping track of elapsed time and used for non blocking delays. Non-blocking delays only run after enough time has passed, and then they reset. Using delay on a ESP32 whiles using freeRTOS is a waste of CPU time. Let me try to give some code example. The config portal will stay available after WiFi connection was made. The program should wait until moving on to the next line of code when it encounters this function. 5 seconds; And go back to step 1, because the loop() function keeps being executed again and again. knightridar: 1 Answer. Not a great analogy to a variable overflow in C/C++, but you get the idea… We mentioned one caveat with these functions, and that is that millis() and micros() overflow after around 50 days and 70 minutes, respectively. As you can see in the datasheet (below image) there are some lines also. Unlike Bluetooth that is always on, BLE remains in sleep mode constantly except for when a connection is initiated. Once downloaded, start the Arduino IDE then go to Sketch > Include Library > Add Zip Library. 25 = 4C4B H. The timer provides basic functionality to implement different ways of timing in a sketch. - GitHub - hammikb/ESP32-Buzzer: A non-blocking buzzer library for ESP32S3 that enables playing multiple tones with specified frequency, on/off duration, and number of. We can use the machine. non blocking API. Another benefit millis()is that it doesn't prevent us from running code while "waiting". 22. No blocking. This process is done at a high frequency for all of the columns and rows. This hardware-based PWM library, a wrapper and enhancement around ESP32-core ledc code, enables you to use Hardware-PWM on ESP32, ESP32_S2, ESP32_S3 and ESP32_C3 boards to create and output PWM. Share. The ezLED library. to control LED: on, off, toggle, fade in/out, blink, blink the number of times, blink in a period of time. 625°/64 in half-step mode. Input. It seems that your specific problem here is that Blynk. Now we have to calculate the value to be filled in Timer register to generate 1 sec delay. How can I rewrite this section, that this is not blocking the main loop but also reading in the wifi-message and the sensor data? Re: non blocking wifi client connection #68870 By andre_teprom - Sun Aug 06, 2017 11:21 amIntroduction. Is your feature request related to a problem? Mostly, I end up using Serial. one that completely stopped the code from doing any thing else while the delay was waiting to expire. Arduino: Using millis() Instead of. Let me try to give some code example. IotWebConf. It is based on the FlexyStepper library by S. A task runs until it says. Important Notes about using ISR. trigger() to indicate that is has passed the critical point. Recommended Reading. We can use multiple delays sequentially in a loop. August 15, 2022. muTimer. If there's a semantic difference between delayMicroseconds() and delay(), it would be nice to document that! There's certainly no such difference in the general Arduino interface expectations. This code is a blocking code right now, it is using delays. The configuration is persisted in EEPROM. It accepts a single integer (or number) argument. Problem is, I cannot start them from outside before the time is over. I would need to figure out in the most real time possible, when one of such devices is close enough to the ESP32, and I thought that RSSI is a good enough approximation. ESP32: sampling a 1 kHz square wave (10%-90% duty cycle) with analogRead() 0. The "delay" node does two things: (1) It allows you to delay a message by an arbitrary amount of time and (2) to limit the rate of messages that are passing through it. This is done by creating a noDealy object and setting the amount of time for the delay you want. Hi Everybody, I'm interested in the ESP32-core what are the lines of code for function delay() inside the core for ESP32 So I tried a find-text in files search in the path C:Usersdipl-AppDataLocalArduino15packagesesp32 but with no success. delay (100);} uint32_t readADC. It's not advisable to make the tick period any shorter than 1ms. However, the adc read function is a non-blocking routine. For including Adafruit_NeoPixel. Is there a way to make our delays non-blocking? An example of how this can go wrong Let’s create an imaginary device to highlight this issue. 1 You can try to take the semaphore without a delay and if successful, break out of the loop: void startTaskFunction (void *params) { while (true) { xSemaphoreTake. The library does not do any dynamic memory allocation. The stepper. I'm using millis() in order to set one counter to 0. Learn how to use sound sensor to control relay, sound sensor triggers light. micros() and overflow. These targets have the following hardware features that make them SMP-capable: Two identical cores are known as CPU0 and CPU1. everytime: A easy to use library for periodic code execution. Please note that the actual PCB layout design and excessive loads may increase the input delay. You could also unit the task with a pointer to a static variable that defines the delay time and use that instead of hard coding it. As others have noted, this can be done using the same method as used in the standard 'BlinkWithoutDelay' example sketch, and combining that with a state-machine type approach. So on real Arduino boards, there's nothing else for delay() to do other than wait for the delay to complete. Blocking call: move to home position (max steps or until limit switch goes low. The project is essentially a web server on esp32 that sends data from different sensors and shows it on a beautiful website page. The config portal will stay available after WiFi connection was made. Hello Guys! I just started a new Rest-server project on my ESP32-S2, but I'm facing some problems regarding the function "WiFi. h> //SSID of your network char.