The function below is a task handler, I am trying to init subsystems (SPIFFS, Wire. As you can see from the logs, the time keeps deviating. Hello, I'm trying to send a simple message every 70ms from an ESP32 device configured in softAP mode to move. Because there are more interrupt sources than interrupts, sometimes it makes sense to share an interrupt in multiple drivers. All examples have. tool-dfuutil-arduinoThe ESP32 has two cores, with 32 interrupts each. We have named our project ‘ESP32_TIMER_INTERRUPT. The payload can be a buffer which the original task allocated at disposal of the transmitter. この部分もESP-IDF側のAPIに切り替えるため、vTaskDelay ()関数を使ったのだが. I also used portTICK_RATE_MS but the speed didnt change . Be aware that dependent on what you. Connect and share knowledge within a single location that is structured and easy to search. c Yes, it's as bad. The Interrupt Watchdog is responsible for detecting instances where. 5us. The hello_task. Device Description. I'm basicly testing the sending data from the ESP32 to Firebase. print ("Starting to create task on core "); Serial. CONFIG_FREERTOS_TIMER_TASK_PRIORITY. The way that time is allocated between tasks is termed “scheduling”. Gotcha. I dont get any delay even if I add some different delays. The buffer size should be minimum. You need to make sure it's already there. Door bell but NOT the telegram message. Make sure that you are at version 1. delayをtask定義の前に入れるか、削除で解決 タスク定義はできるだけ最後にした方がいいのかな。 マルチタスクの弊害が出てしまった。 今回でだいぶesp32のことを知れた。 おもしれぇやつだな、おめぇ. Use vTaskSuspend () at the start of the loop to have the task wait till it's woken up. When the first instance of the task wakes up, it decrements the count, and it it was 1, it exits the loop, closes the door, and exits the task. inoUse variables with both cores and tasks ESP32. This function is used to configure the timer. Check the first Task tutorial where the vTaskDelay API was discussed. Read part 1. Otherwise, a task with a higher priority may preempt the task that calls. Task 2 will run on core 1, receiving data from first task and send it async over TCP. Which makes 'loopDelay' a stupid name 'SerialInterval' is more appropriate. The time is specified in RTOS tick periods. This serial number can be anywhere from 8 to 10 characters. Internally, esp_timer uses a 64-bit hardware timer, where the implementation depends on the target. When using the Arduino IDE, the program runs by default on core 1. 1. To delay overall loop results in serial print monitor so I can keep track of / observe results easily. The operating voltage of this SoC is 3. 60. Can I predict or calculate in advance and with accuracy the delay time which is required within a task in order to prevent the watchdog task from triggering (in order for example to know if the introduced delay could interfere with more time-critical events like missing serial input that is faster than 10 ms) ? Code: Select all #include <string. framework-espidf. This way the task will block for a maximum of 100ms waiting for semaphore to be given, after which it'll unblock and resume execution anyway. hatenablog. I want to try the inits in a loop, with a short delay between attempts, and I want the watchdog to reset the ESP after say 5 seconds. build_type = debug monitor_filters = esp32_exception_decoder, log2file, time. The esp32 is placed close to the AP. Chip ESP32 chứa hai nhóm Timer. My code performs following tasks: 1) connect to mqtt broker (Cayenne) that uses the tinygsm library to 2) establish network connection and then 3) perform some measurements and send the data. Note that task are implemented with regular functions and they only need to follow a predefined function prototype [3]. h) will allow you to busy-wait for a correct number of microseconds. If the counter have not been activated, the currenttime=millis() always ticking. The data output looks like. -- So I have a big pile of spaghetti here (link to sketch dump). ESP-IDF supports multiple types of watchdogs: Interrupt Watchdog Timer (IWDT) Task Watchdog Timer (TWDT) The Interrupt Watchdog is responsible for ensuring that ISRs (Interrupt Service Routines) are not blocked for a prolonged period of time. esp_timer set of APIs provides one-shot and periodic timers, microsecond time resolution, and 64-bit range. With the ESP32 running at 240Mhz it is 0. ESP32とArduinoIDEでキューを送りたい. The High Resolution Timer (ESP Timer) provided by FreeRTOS uses a 64 bit hardware timer. If it is your first time working with this board it may be useful to get an overview of the microcontroller: General information about the ESP32 port. delay(1); This will feed the watchdog timer without disabling it. Task B and C has the same periodicity but C has higher priority. You can't use it with board that have an ESP32 microcontroller. If you REALLY need a delay, use ::delay(), but this will block the task and the scheduler. One of the many interesting features of ESP32 is that it has two Tensilica LX6 cores, which we can take advantage of to run our code with higher performance and more versatility. This. Hi, The thing with uS delays under software control is you need to clearly understanding you're tolerances. ESP32 SoC has two processor cores (three in fact, if you also count the ULP core). Despite many attempts. Steps to be followed to create a task are: Create a task handle to keep a track of the task created. Any ESP32 development board should work, so long as it’s supported in the Arduino IDE. github-actions bot changed the title ESP32 Watchdog timer limited to approximately 1 hour, fix herein ESP32 Watchdog timer limited to approximately 1 hour, fix herein (IDFGH-4847) Mar 1, 2021 Dazza0 self-assigned this Sep 23, 2021There are different solutions. Cooperative multitasking is a style of programming in which multiple tasks take turns running. Yield() is so niche and easily. This indicates the amount of memory we want to reserve for the particular task. The fourth argument is the parameter. When it returns. In fact, the number of cores doesn't really matter much as long as you're not running out of CPU cycles or violating the real-time deadlines of your animations. Step 1: Introduction. INCLUDE_vTaskDelay must be defined as 1 for this function to be available. /* pin task to core 0 */ delay(500); //create a task that will be executed in the Task2code() function, with priority 1 and executed on core 1 xTaskCreatePinnedToCore( Task2code, /* Task function. We need to pass a string pointer (buffer) to which it copies the above task details. Espressif IoT Development Framework. Now I believe timer interrupt will be a better option as we will not need. It is a signaling process whereby a waiting task is signaled by another task to continue execution. When an interrupt occurs, the microcontroller will go through the following steps: The microcontroller will halt the current task and will store the address of the next instruction (Program Counter or PC) on the stack (lower byte first). Reload to refresh your session. Core 0. At the bottom of the function you will see various lines that are commented. And at the same time, be an. Re: ESP32 2Tasks on 2 Cores - Board reset. We are using the ESP32 on our new upcoming Kickstarter, the BC24. 2 days ago · Hello guys. #1. esp_timer set of APIs provides one-shot and periodic timers, microsecond time resolution, and 64-bit range. be connected on a same SPI bus (sharing a single ESP32 SPI peripheral). xTaskCreate is the freeRTOS call used to create task. I want to try the inits in a loop, with a short delay between attempts, and I want the watchdog to reset the ESP after say 5 seconds. Gotta be something to do with that register you set, or the setcrystal thing or one of those libraries. Official development framework for ESP32 chip. This is actually a big waste of computation time. h) will allow you to busy-wait for a correct number of microseconds. hello. vTaskDelay(500 / portTICK_RATE_MS); You can use vTaskDelay () even if not using FreeRTOS tasks. Most of it is functions related to controlling a nextion screen via serial and stepper motors. ESP32-S2. The actual time that the task remains blocked depends on the tick rate. Note that this is busy-waiting – it does not allow other tasks to run, it just burns CPU cycles. - Currently, Arduino ESP32 FreeRTOS configuration use Prioritized Pre-emptive Scheduling with time slicing so we just make demo for this type of scheduling. Task watchdog got triggered. The maximum amount of time the task should block waiting for an item to receive should the queue be empty at the time of the call. 複数のプロセスを並行処理するマルチスレッドでは、プロセス間でデータの受け渡しをする際にルールを決め. The closest solution to yours would be to create a semaphore that you attempt to take inside the task with a 100ms delay and that you give from ISR. As we know, the illusion that all the tasks are running concurrently is achieved by allowing each to have a share of the processor time. However, my sketches use WiFi, which starts a couple of tasks, each outputting via log_X. So 2 tasks, one on each core. Without having delay/vTaskDelay/etc the task scheduler never runs and the idle task for the core (scheduler) will not reset the WDT for it's task and that will trigger the WDT. If your application code does not call vTaskSuspendAll () directly,. TaskScheduler. Espressif IoT Development Framework. First for safety set the initial task size to 10000. As soon as this machine starts processing the task from the JSON string of the websocket message, it doesn't take long (5-7 seconds) before the ESP32's watchdog triggers. And, I am trying to create a webserver with 3 submit push buttons. Implementing ESP32 hardware watchdog timer using Arduino IDEThe right way to do this is to have the interrupt service routine just wake up a task. 15s to 0. the stepper_task never receives another message from the queue. It does not interact with RTOS and calling it will actually block everything for 100ms, if it is called from higest-priority task. 2. Both of your tasks are running at full steam ahead with no controls. xTaskCreate () for first task. The ROM function ets_delay_us() (defined in rom/ets_sys. With a big disclaimer that there's. In full-step mode: 64/2 = 32 steps to complete one rotation. Down at the very bottom you'll see two core task. cpp 📋 Copy to clipboard ⇓ Download. esp_task_wdt_init(WDT_TIMEOUT, true); // enable panic so ESP32 restarts esp_task_wdt_add(NULL); // add current thread to WDT watch And this in the loop() part:. Note: Suppose that we have 2 tasks: the low priority task and the high priority task. The ESP32 is a FAST microprocessor. TBH i would probably use a PIC over the esp32 for highly time critical sub-microsecond timing applications mostly because Microchip doesnt hide the instruction set! I thought about using RTOS task/dma, atomic14's approach actually might be the most efficient use of system resources. Right now I see on the monitor that the loop in the vTask_Manage_STA_Connection runs a single time. An ESP32 Event Group is simply a collection of flag bits that can be set / reset. Delay in uS. To do that, make the connections on a breadboard as shown in the below circuit diagram. This function. It’s scheduled to run after 120 milliseconds when run the first time. 3V ESP32-U4WDH Dualcore3 v3. The next task in this project is to read the temperature that is going to be used to control the damper. The . INCLUDE_vTaskDelayUntil must be defined as 1 for this function to be available. 0/v3. The 28BYJ-48 Stepper Motor has a stride angle of 5. The ROM function ets_delay_us() (defined in rom/ets_sys. pos;i++)Exact delays. This tutorial instructs you another method to blink LED without blocking other tasks. The number of times the idle hook runs is not directly proportional to the time spent in idle state. A task runs until it says "okay, I've done. Go to esp32 r/esp32 • by. As long as each Device is accessed by only one task, the driver is thread-safe. I'd replace delay with a wake up time for deep sleep. The first argument is the name of the function. here is a task using the ESP32's millis cycle counter and the freeRTOS tick counter. As a computer programmer implementing logic, you don’t want your tasks to get delayed for any reason. Using Arduino Microcontrollers. Begin () called within setup assigns SPI interrupts to core 1 (Arduino) whereas the tasks may be trying to use resources on core 0. printf/log_i manages to lockup the board. so if the task is not yielding i. We create 2 tasks: task1 has priority is 1, task2 has priority is 4. Dynamic tasks activation and deactivation. Hello everyone, I'm transferring a project from the arduino to the ESP32, is there a command to insert the delayMicroseconds function as in the arduino?Do not worry about using delay in the tasks unless needed. TaskScheduler. h" library, after the Wifi connection completed the task stay IDLE with a infinite loop of delays. There are a thousand microseconds in a millisecond and a million microseconds in a second. The failure seemed to take place when the in-line reading was taking place. h" #include "esp_attr. In the examples, each task is in an infinite loop. The esp32 is placed close to the AP. This function can be used by periodic tasks to ensure a constant execution frequency. LAC timer is used for ESP32. The WDT timer never fires. xTaskNotify () is used to send an event directly to and potentially unblock an RTOS task, and optionally update one of the receiving task’s notification values in one of the following ways: Write a 32-bit number to the notification value. Postby idahowalker » Thu Mar 28, 2019 9:49 pm. The NodeMCU ESP32 is based on the Xtensa 32-bit LX6 dual-core microprocessor that embeds the FreeRTOS OS. ST7789とのSPI通信プログラムを実装していて、初期化関数の中でコマンド送信後delay ()でちょっとだけ時間調整をしている部分があった。. ESP32 FreeRTOS non-blocking semaphore in. It simply prints the string to the UART. Code that executes faster can also have other positive effects, e. o. Best practice task watchdog timer implementation: ESP32 & SIM800. To multitask, it is interesting to use all the resources of the microprocessor. The following optimizations will improve the execution of nearly all code - including boot times, throughput, latency, etc: Set CONFIG_ESPTOOLPY_FLASHFREQ to 80 MHz. ’. c file, there is a define named IDLE_TASK_SIZE. CORRUPT HEAP: Bad head. Kick them up to at least 2048 and try it. This function can be used by periodic tasks to ensure a constant execution frequency. tool-cmake. lib_deps = feilipu/FreeRTOS @ 10. When I use the delay() function with a length as low as 1 and as long as 250, delay() never returns. SPIFFS is very slow, which can cause a task watchdog, depended on file size. ESP-IDF uses a port of FreeRTOS. ESP32: shared variable between tasks. 0000041666666666667 ms per clock tick. What many people are looking for is the task watchdog timer and I will show you in this article how to implement it using Arduino IDE. の続きで、ESP32DevKitCとArduinoIDEを使って、ESP32でマルチコア・マルチスレッドを使っていきます。. 5. A primeira tarefa será a automatização do controle de um ventilador a partir da temperatura ambiente, e a segunda tarefa será o desenvolvimento de um lembrete diário para beber água. h" #include "freertos/task. INCLUDE_vTaskDelayUntil must be defined as 1 for this function to be available. This is vTaskDelay ( pdMS_TO_TICKS ( 10 ) ) a delay of 10mSec, this vTaskDelay ( 10 ) is a delay of 10 clock ticks. Hi, it's me again with more stupid questions. LED controlling is mostly the easiest task for a controller, that we control the LED On/Off by digitalWrite() and delay() to control its On/Off time when we begin to learn to program. I need to know all this breakdown. Jan 3, 2021. If you need multiple tasks to occur at the same time, you simply cannot use delay (). bad form to program with delay() of any significant duration. The exact hardware timer implementation used depends on the target, where SYSTIMER is used for ESP32-S3. timerBegin. You can see the code here. The tests shown here were performed using a DFRobot’s ESP-WROOM-32 device integrated in a ESP32 FireBeetle board . I have changed it to 1000. There will be 2 task, first task will run on core 0, communicating with sensors to collect data at 4000SPS, using SPI bus. I can put test code around this to verify. execute() in loop(), which pops off the next task that is. Re: performance power consumption in loop thread. I am new to ESP32 programming, coming from Arduino, and I am struggling with the task watchdog timer. Shizen: I can use vTaskDelay () for days on a task and the ESP32 will handle the timing. I have a simple task running on ESP32 that reads an I2C A/D, and updates an array with the data it reads, so other tasks can access the data. delay() doesn't actually block the CPU at all. Ask Question Asked 1 year, 3 months ago. ESP32 Timer Example (Arduino) Let’s say we’d like to toggle an LED every 1 ms without using a delay that blocks the CPU and does much harm to the overall timing performance of your system. I am having trouble figuring out how to disable then re-enable (upon a triggering event) the hw (esp32-hal-timer) timer from the esp-arduino library, here for a stepper motor controller application with my esp32 development board. The Interrupt Watchdog is responsible for detecting instances where. Dynamic tasks activation and deactivation. I try to understand the concept of the dual core operation, but my solutions keep crashing. delay does not block on esp32! A única opção não recomendada é um loop baseado na função millis (). Their task handle is saved in a shared data structure, which access controlled by a mutex semaphore. The definition is that one in esp32-hal-misc. h" #include <cJSON. –So, I note that the vTaskDelay in the arduino does a delay of 15ms because of the Watchdog timer, this is the piece of code that says it. h" #include "esp_system. It determines what process to run next based on priority. B. You can still run your own. () method must return quickly so that the other tasks in the loop get. // "iBeacons-ESP32-Tracker. that delay() should not be necessary , the xTaskNotifyTake() will suspend this task, I would set your priorities to be dissimilar 2,3,4, you might want to read about how the ESP32 implementation of the Scheduler can skip tasks with equivalent priorities round-robin-scheduling. This function takes in several arguments. 1-1 That FreeRTOS library is specifically written for use with boards that have an AVR architecture microcontroller. The function timerBegin (uint8_t id, uint16_t prescaler, bool countUp) allows to configure the timer : The ESP32 has 4 independent timers, selected by an id between 0 and 3. . Application startup covers everything that happens after the app starts executing and before the app_main function starts running inside the main task. This the first of a new set of tutorials by SwitchDoc Labs on using the ESP32, the follow on chip to the popular ESP8266. pio run -t menuconfig. That should be sufficient. Blocking functions prevent a program from doing anything else until that particular task has completed. Mode – defines when the interrupt should be triggered. That made it stable, but I still had issues with global variables being updated, so I had to add a delay to the task. delayMicroseconds() calls it at least twice. The task is the piece of code that performs some operation on the board like blinking led, sending temperature, etc. vTaskDelay(500 / portTICK_RATE_MS); You can use. The ESP32 development board comes with FreeRTOS firmware already installed on it which is supported by the Arduino IDE as well. This means that other code can run at the same time without being interrupted by the LED code. This tutorial instructs you another method to blink LED without blocking other tasks. h BaseType_t xTaskDelayUntil( TickType_t *pxPreviousWakeTime, const TickType_t xTimeIncrement ); INCLUDE_xTaskDelayUntil must be defined as 1 for this function to be available. However, improving execution speed may have trade-offs with other aspects of performance such as Minimizing Binary Size. The problem showed up with the release of ESP32 core v2. g. ” It takes in the first parameters an integer (uint32) which is the constant TickType depicting the ticks to delay. Also test unpinned Task2. (there is no problem of core). . Essentially, the code starts a task that has one job: ble scan. Yes. That means that it ticks at C times per second or, each clock tick is 1/C seconds. This is open to a little bit of optimization. I wanted to try to do multi tasking usigng the duel core system on the ESP32, Iam able to make it run on Core 0 but not core 1. After that, you can use vTaskDelay (. Basically I just want to run a task a given hertz (for example 50 Hz). Microsecond delay within task. The two ESP32 timer groups, with two timers in each, provide the total of four individual timers for use. So we know that delay() is a relative time clock. Task delay becomes critical; Lower task priority becomes critical; I'd like to avoid to disable the WDT; Interrupt on the button pin to wake up the task could be an option, however I want to avoid interrups and I want to use polling; Is it possible that I can't polling a pin? On all microcontrollers (without FreeRTOS) I think it is easy to. Main Task (main) Task that simply calls app_main. callTask_3 (); // do something else } The trick is that each callTask. Task. Your code is quite reasonably divided into two threads (Task1 and Task2) which run on different cores. unless delay actually calls vTaskDelay on esp32, which it does. You do not have the required permissions to view the files attached to this post. In our case, we have set it to Demo_Task. For example, we have two tasks: Demo_Task and Demo_Task2. ems912 February 8, 2023, 12:46am 1. There are functions that return the value of free HEAP, such as ESP. This has been working fine since October last year (based on the git history for the code line in question). To do so, we simply use the uxTaskPriorityGet function. void delay(uint32_t ms){vTaskDelay(ms / portTICK_PERIOD_MS);} defined in packages/esp32/hardware/esp32/1. But instead of using delay, we are going to use timer interrupt. 3V ESP32-D0WDQ6-V3(NRND) Dualcore v3. ESP32 有個先進武器 - 雙核多工，現在有機會派上用場了。 用 xTaskCreatePinnedToCore() 建立一個獨立 Task，在 Task 跑無窮迴圈 delay(1) 1ms analogRead() 取樣一次，循環記錄 100 個點。Since my task takes approximately 0. Arduino doesn't currently enable these features. I am getting confused at some places. . Good afternoon, I want to make a continuously operable gateway that measures temperature with esp32. delay(1); also resets WDT timer but I also do not want it be delayed for 1ms. So, it means that the task will be blocked during the delay time [5] and the scheduler can attribute the CPU to other free task. The Nano ESP32 features the ESP32-S3 system on a chip (SoC) from Espressif, which is embedded in the NORA-W106 module. This function receives as input parameter the handle of the task to which we want to know the. WatchdogTimer (ウォッチドッグタイマー) ESP32 (M5Stack)とArduinoにて、ウォッチドッグタイマーの動作を確認する。. The following tasks did not reset the watchdog in time: E (17121869) task_wdt: - IDLE0 (CPU 0) E (17121869) task_wdt: Tasks currently running: E. The following are confirmed to be. I also used portTICK_RATE_MS but the speed didnt change . First of all, the timer should be initialized by calling the function timer_init() and passing a structure. I've tried pinning the task to either core. (Note: don't forget to call this function, or it will lead to the watchdog restarting the ESP32). Example code: void Task1code( void * parameter ){ Serial. In our case, we have set it to Demo_Task. Note1: As a workaround in the code I reset the device with MQTT, Ethernet and ESP. (esp_task_wdt_add (NULL); esp_task_wdt_reset ();) instead of delay (x. Spoilers below! I highly encourage you to try the challenge on your own before comparing your answer to mine. CONFIG_FREERTOS_TIMER_TASK_STACK_DEPTH. This means that the motor has a step angle of 5. ESP_PM_CPU_FREQ_MAX. ESP32 Timer Interrupt Example – Blinking an LED. The objective of this post is to implement a simple power calculation algorithm on the ESP32 and test the speedup by executing it in the two cores of the microcontroller. I'm using millis() in order to set one counter to 0. The delay has to be configurable to sub microsecond resolution. , integers, strings, and boolens). One, it keeps us from having to keep checking all the time, freeing up those cycles to do other stuff. I would like to break this second loop when the stop button is pressed. This takes some work and code re-organization. For example my task execution time may vary from 0. 0/v1. August 15, 2022. If you see my requestTemp task is always running accessing on every loop the TCA9548A I2C device, at the same time my interrupt task could get an event from my TCA6416 I/O and then will also communicate to my TCA9548A I2C device in order to get the bytes and see which button was pressed. Specify the project name and directory. Assign a reasonable value and use the FreeRTOS API to calculate the free space left over by the Task. esp_timer set of APIs provides one-shot and periodic timers, microsecond time resolution, and 64-bit range. Another nice hub for information is the awesome. Re: FreeRTOS Task notification crashing esp32. ino file. That means controlling 1 LED with two different delay times. Overview. Always use RTOS based delay function. xTaskCreatePinnedToCore()関数を使うことで実装できる。The esp32 task uses 4ms delay, while the avr repeats every ~4 ms at 16 MHz and atmel sam due every 2ms at 21MHz. Note that this behavior is the expected since the implementation of the ESP32 for the Arduino delay uses the FreeRTOS vTaskDelay function, as can be seen here. Re: Task watchdog got triggered. The RTOS task does not consume any CPU time when it is in the Blocked state. 内部ではvTaskDelayを使ってるのでArduinoのdelay. Since you are running only a single task on the ESP32 the delay(100) will interfere with the response of the callback function. For example delayMicroseconds(2) takes 330 cycles, corresponding to a delay of more than 4µs, or double what was requested, when running at 80MHz to save power. One is to use the semaphore (s. Deixe-a para quando estiver programando um Arduino. My device uses wifi, ble feature. Nothing changes if I use yield() instead of esp_task_wdt_reset(); However, if i change esp_task_wdt_reset() to vTaskDelay( 10 / portTICK_PERIOD_MS ), then no more WDT reset, but I don't want 10ms delay for my task. To generate a delay, we will use “vTaskDelay. In this example, we are going to test a LED blink program. Most Arduino sensor libraries use calls to delay() to wait for the reading to become available. h". 1. Serial. Project Configuration . Every 1ms a timer interrupt fires and the scheduler jumps in and looks for the highest priority task that is able run. 2) We could create a timer interrupt that will trigger on every interval as set to the timer And will be pushed to call back. It’s scheduled to run on a delay of 50 milliseconds. Make Task2 show the state of Task1. The code runs very fast until it casues a stack overflow and resets the esp. If vTaskDelay ( 0 ) is called, then the wake time will be immediately, so the task will not block, but a yield will still be performed. This leads to the second tangentially related problem. The Interrupt Watchdog Timer and the TWDT can both be enabled using Project Configuration Menu, however the TWDT can also be enabled during runtime. define a queue, copy, to pass variable A to cpu 1. This number corresponds to the tick which is the frequency of the chip. The. "I'm counting pulses from an electricity meter using an ESP32 DEVKIT and an ISR to increment a variable. In void setup (), create two tasks (TaskLED and TaskBlink)using the xTaskCreate () API and then create a semaphore using xSemaphoreCreateBinary (). Hello everyone, I'm transferring a project from the arduino to the ESP32, is there a command to insert the delayMicroseconds function as in the arduino? Do not worry about using delay in the tasks unless needed. Internally, esp_timer uses a 64-bit hardware timer. . We assume a previous installation of the ESP32 support for the Arduino environment. Your Chrono and Webserver tasks simply won't work the way you've written them. In the setup function I start 2 separated tasks. Shizen February 21, 2023, 1:53am 5. A task switch is normally considered a form of “blocking”, isn’t it?I have a task that waits for a semaphore to run. It then returns to the main task without disturbing that task in any way though the main task may well check at the appropriate point for a "flag" set by the interrupt. The watchdog monitor task runs at a higher priority than the tasks it is monitoring. . To prove it, just upload a dead simple delay sketch and see if it works then. The HTTP server runs normally, but "crashes", page times out. Tasks can run yield() and delay() like they normally would. The following tasks did not reset the watchdog in time : - IDLE (CPU 0 ) - IDLE (CPU 1 ) Tasks currently running: CPU 0: blinkLedTask CPU 1: ipc1 Task watchdog got.