But, toggling a diode every 125 us is already a problem with FreeRTOS kernel running alongside (a lot of jitter, oscilloscope screen shows a mess). An alternative could be to use a PWM. Most of it is functions related to controlling a nextion screen via serial and stepper motors. */ void delayMicroseconds (unsigned int us) { // calling avrlib's delay_us () function with low values (e. If you don't put something that blocks the fors(), same priority tasks that you created never get CPU. Now I can use different vTaskDelay in the app_main function. Just tested. Why saying 100HZ is a fairly reasonable tick rate? And i think i can set delay upto vTaskDelay( 65535000/(1000/1) if configUSE16BIT_TICKS is 1, that mean vTaskDelay(65535) 65535 seconds=18 hrs? However, to answer your actual question, there is a more accurate alternative to delayMicroseconds (): the function _delay_us () from the AVR-libc is cycle-accurate and, for example. Understanding the vTaskDelay help. I was wondering how I can delay for longer periods of time using freertos function vTaskDelay(). The sdk for the chip needed 2msec. 0. This function differs from vTaskDelay () in one important aspect: vTaskDelay () specifies a time at which the task wishes to unblock relative to the time at which vTaskDelay () is called, whereas vTaskDelayUntil. av4625 May 22, 2020, 9:12am 3. (When i try to make use of SysTickHandler compiler says that is already used. delayMicroseconds() works in arduino. vTaskDelay . 3 posts • Page 1 of 1. 1 1 1. However, the loops don't have delay() or vTaskDelay() in them and I was wondering if that would cause issues with the pinned tasks blocking other system/housekeeping tasks from executing, as discussed in this thread. How to delay in nanosecond. void vTaskDelay( const TickType_t xTicksToDelay );. The examples were written for processors where millis() returns an unsigned long and rolls over after 49 and a bit days,. vTaskDelay for 1uS, possible?Posted by willywortel on December 3, 2008First of all, thanks everyone for the response so far. You can also use the. -- So I have a big pile of spaghetti here (link to sketch dump). No, because that's not what vTaskDelay was meant to be used for. Have just done the test on an ESP32 ESP32 DoIt ESP32 Devkit V1 (80MHz) I/O Speed Tests Over 50000 Iterations. Q&A for work. They each call semaphoreTake (), which decrements the counting semaphore. Try publishing a constant string each time, rather then creating a new string each time. vTaskDelay for 1uS, possible? Delays on the order of microseconds almost certainly have to be done with either a hardware timer (and you just monitor the count value) or with a timed sequence of instructions (like NOPs). The esp32 has WiFi and ESP-NOW active at the same time, receiving some data from another esp32. void delay (int number_of_seconds) {. It jumps from 8 to 25 even tho I am not moving the object at the distance, it should be like 10-12 but not 25. If you don't want to use vTaskDelay maybe you could make the priority of the IDLE and the MAIN task equal. I think you get the idea already, but if you have multiple tasks created, then vTaskDelay() will put the. calling osDelay (1) right before the next system tick occurs the. Tips, buy me a coffee, or three. By default, the number of cycles to delay is calculated based on the clock configuration entered in PSoC Creator. I had an issue with the chip delivering bad calibration data. One of the first solutions I thought about was to increase the tick rate to 10kHz and use vTaskDelay(1) to create the intervals, while giving the other tasks a chance to run. Pauses the program for the amount of time (in microseconds) specified by the parameter. ("MICROSECONDS","time in miliseconds=%lli",task_execution_start); // HERE BUNCH OF THINHS HAPPENING SUCH AS TOGGLING RELAYS, PRINTING VARIOUS STATES. Makes sense actually, as there is always only one task at once running, RTOS will know which task to suspend. vTaskDelay for 1uS, possible?Posted by willywortel on December 3, 2008First of all, thanks everyone for the response so far. Yep, I totally understand that limitation. It is based on the RTOS tick rate. After suspending/resuming led blinks with a period of ~20 microseconds. I'm also having trouble with this function. Given that your debounce strategy takes 31 cycles to decide a button is pressed, that means that you need to keep the button pressed for 3. One microsecond contains 1000 nanoseconds. If a task changes a higher-priority task to the running state, the higher-priority task will not. Calling vTaskDelay(0) is equivalent to calling taskYIELD(). TIM7 is used for microseconds delay, which will be needed for the DHT11 sensor to operate. This sounds like an XY problem. My code uses both cores of the ESP32 and seems to work well. ASSER_WARN with BT SPP (IDFGH. vTaskDelay for 1uS, possible? Delays on the order of microseconds almost certainly have to be done with either a hardware timer (and you just monitor the count value) or with a timed sequence of instructions (like NOPs). Repeat from Step 1. task. Thannks! vTaskdelay (), vTaskdelayuntil () call doesn't work on MPC5748G. Hopefully i have not overlooked. especially if nested interrupts is all working as it should…’ that’s how I fire the firing pin at exactly the time it. Then we can likely propose a good way of solving your problem. where N is the required number of microseconds. Generate timeout delay from microseconds. The delay will be variable depending on the temperature read from the printer head, and it vary around 1 millisecond. However, improving execution speed may have trade-offs with other aspects of performance such as Minimizing Binary Size. For a 16 MHz cpu millis() advances every 1024 microseconds. Delaying in microseconds, Delays to things like vTaskDelay will; be in units of ticks, you could always define something like portTICKPERIODMICROSEC, but you still won’t get a finer resolution. , Xtensa and RISC-V) available of ESP chips. Follow asked Dec 28, 2019 at 11:39. vTaskDelay () specifies a time at which the task wishes to unblock relative to the time at which vTaskDelay () is called. I would put some vTaskDelay(1000) inside each for() loop both into startTask1() and into startCheckTask1(). It's not advisable to make the tick period any shorter than 1ms. For your website. 1ms = SystemCoreClock / 1000. Interrupts up to the syscall priority level are masked until the scheduler is started. 5nS, +/- interrupts/overhead/etc) or set up a timer to count exact clock cycles, and then convert to your preferred units at the user interface level. Hi Max, OpenRTOS is outside my expertise, but if you were to implement the above task in FreeRTOS: I would go for the third option: program one of the TC’s (Timer-Clock). You can't use it for precise timing, but it's fine for a task they needs to wake up now and then to do something. Therefor, I read a lot, especally about xSemaphoreGiveFromISR which seems to be the most efficiant way to deal with this problem. Reply. Hi, it's me again with more stupid questions. //delay_us (us); // for the 16. Code that executes faster can also have other positive effects, e. You really helped me out!. The code simply reads an input on the serial port and returns it with. 1. The parameter in vTaskDelay is the delay period in number of ticks from now I'm totally new to programming and electronics, it would be very helpful if someone helped me figure this out. vTaskDelay () is a non-blocking delay, it let's other threads to continue working. I’d listen to the guidance from @hs2. To use delay function in your program you should include the "dos. What is the difference between Nano 328p-au and 328p-mu? 2. If it is false then I wait 60 microseconds and then continue. How can I do that with freertos or just what are the calculations (for delay). For delays longer than a few thousand microseconds, you should. Understanding the vTaskDelay help. system Closed May 5, 2021, 11:28pm 3 Ive written some test-code to see how the FreeRTOS works. in the interrupt, you can yieldfromISR , taskgivefromISR etc this way you can get a. 下面我们用例子来分析一下，新建一个控制台应用程序，代码如下： 运行结果如下： 这里只能看到最终的运行结果，看不到执行过程。. I am programming an STM32F103 for my project and recently switched from bare-metal to RTOS (FreeRTOS to be specific) without using CubeMX (code attached below. Shizen: I can use vTaskDelay () for days on a task and the ESP32 will handle the timing. 5 milliseconds. 001 Seconds: 1000000 Microseconds = 1 Seconds: Embed this unit converter in your page or blog, by copying the following HTML code: convertliveRe: vTaskDelay. I have currently implemented a method which uses a counter. あと、こちらの関数を使う場合、ディレイ時間はTick単位になる。. (When i try to make use of SysTickHandler compiler says that is already used. Using Arduino Programming Questions. If I use vTaskDelayUntil() without xTaskAbortDelay(), the program runs smoothly. 2. Support for power management. Code: Select all. Why vTaskDelay() or vTaskDelayUntil() not working as they suppose to work? I'm trying to find in RTOS manual an answer, but without any success. ) Such as vTaskDelay(1/portTICKPERIODMS) to get 1 milliseconds. You can easily find or write a piece of code that delays for 12500 nanoseconds (+/-62. I have ensured that this is the only task with priority 1. But when i used vTaskdelay () inside the task, the application crashes. This is a port from esp-open-rtos for espressif official SDK ESP8266_RTOS_SDK. 1 microsecond – the amount of time it takes for a high-speed camera flash. So in this case I want to make the system to wait for 33 to 37 micro-seconds which is possible through vTaskDelay() if the configTICK_RATE_HZ is set to 1000000. 10 Milliseconds = 10000 Microseconds. Something like: Something like: let end = us + unsafe { esp_timer_get_time ( ) } ; let ticks = us / ( portTICK_PERIOD_MS * 1000 ) ; if ticks > 0 { vTaskDelay ( ticks ) ; } while unsafe. vTaskDelay () does not therefore provide a good method of controlling the frequency of a periodic. In this guide, we will show you how to use FreeRTOS timers and delays using ESP32 and ESP-IDF. 1. If you need multiple tasks to occur at the same time, you simply cannot use delay (). This is the second part of a series of ESP-IDF tutorials that I will complete as I learn stuff. g. Conversion table. vTaskDelay (250) causes a “Hard Fault&…. This example delays by 500ms: esp-idf-equivalent-to-arduino-delay. FreeRTOS常用API vTaskDelay void vTaskDelay( portTickType xTicksToDelay ); 延时任务为已知时间片。任务被锁住剩余的实际时间由时间片率决定。portTICK_RATE_MS常量用来用来从时间片速率（一片周期代表着分辨率）来计算实际时间。vTaskDelay()指定一个任务希望的时间段，这个时间之后（调用vTaskDelay() ）任务. If you’re using. ParametersCheck that the timer task isn't in a loop continuously calling vTaskDelay(0). Timestamp of the nearest timer event, in microseconds. Delay () Delay is an arduino function wrapper that calls vtaskdelay. The ESP32 does not reset now. Building with the latest Arduino IDE and ESP board definition. 58acac8. I have created a freertos task and I want it to repeat itself precisely every 2 seconds. Why do I need the vTaskDelay() in the TaskTransmit(). Sometimes it delays for exactly 2 seconds but sometimes it misses 10ms. So, to be safe, both must be equal or one has to be zero. I have ensured that this is the only task with priority 1. The problem occurs in the next line, the first vTaskDelay call. The FreeRTOS support forum can be used for active support both from Amazon Web Services and the community. c","path":"util/DWT_Delay. The delay will be variable depending on the temperature read from the printer head, and it vary around 1 millisecond. You could simply verify this by replacing the call to vTaskDelayUntil with vTaskDelay (Yes, I know it’s not the same but a lot of times it is ok…) I think Richard Barry should consider. Is this approach the best or is there another way? vTaskDelay issue bit me. int milli_seconds = 1000 * number_of_seconds; clock_t start_time = clock();ESP8266_RTOS_SDK library for DHT11, DHT22 or SI7021. PayPal Venmo Up vote any posts that you find helpful, it shows what's working. That's why the limitation on minimal period is there. 00001 and 0. The constant portTICK_PERIOD_MS can be used to calculate real time from the tick rate - with the resolution of one tick period. When i put the function in a continuous loop, without delay calls, then it works correctly. 1 Seconds = 1000000 Microseconds: 10 Seconds = 10000000 Microseconds: 2500 Seconds = 2500000000 Microseconds: 2 Seconds = 2000000 Microseconds: 20 Seconds = 20000000 Microseconds: 5000 Seconds = 5000000000 Microseconds: 3 Seconds = 3000000 Microseconds: 30 Seconds = 30000000 Microseconds: 10000 Seconds =. You should use vTaskDelaySofware interrupt. -- So I have a big pile of spaghetti here (link to sketch dump). Edit: The Arduino AVR core sets the timer 0 prescale factor to 64. Maybe because you can't generate delays or if there is a similar command what is it. The actual time that the task remains. The ROM function ets_delay_us() (defined in rom/ets_sys. Certain things do go on while the delay () function is controlling the Atmega chip, however, because the delay function does not disable interrupts. B. Cooperative multitasking for Arduino, ESPx, STM32 and other microcontrollers. 이 함수는 vTaskDelay() 와 다른 중요한 점이 있다. bvernoux completed on Oct 19, 2016. I need to do a sleep cycle, instead delay, to reduce power consumption, for example: EM2 (or deaper, but em2 is ok) Sleep 5 second. To avoid the need for uartReadyToSleep function I have implemented a waitToSleepTask:In my case, what I want to do is controlling the heating time of a thermal printer’s strobe. Note down the value of xTickCount when the breakpoint set in step 3 is hit. 9999 ms, depending how far through the current tick period you are when the delay starts. Taking over 500 microseconds per read, almost 500 per write. I am new to FreeRTOS. Not sure. This should cause a back trace to be printed when either functions are called. For measuring time, there's xTaskGetTickCount, but this will be limited to the resolution of your tick rate. Posted by heinbali01 on November 3, 2015. Returns. One of the first solutions I thought about was to increase the tick rate to 10kHz and use vTaskDelay(1) to create the intervals, while. The. I made the function so it toggles a led. Post Reply. We’ve also found instances where (10 / portTICK_PERIOD_MS) results in a delay of 100mS regardless of the value used! Even vTaskDelay(10. The problem is no to pass control back to FreeRTOS but the handling of the watchdog in the eps-idf framework. Best regards. Sorted by: 4. Thus, all ESP-IDF applications and many ESP-IDF components are written based on FreeRTOS. So I am trying to make a very simple example problem: Print "Hello" to screen using software interrupt (generated every second). Thank you for the replies. This function differs from vTaskDelay () in one important aspect: vTaskDelay () specifies a time at which the task wishes to unblock relative to the time at. However, I've read that. MainTask runs only onces. Microcontroller I/O & ADC Benchmarks Microcontrollers. Which one of the tv_sec or tv_usec values is used seems implementation dependent, as usual with POSIX you cannot trust anyone to assume a fixed behavior. But for some reason Timer0 is being disabled, and can't use the delay(), millis() and delayMicroseconds(). 3 posts • Page 1 of 1. The bug is only triggered if I activate another task, which initiates a client HTTP connection with a response timeout. I believe both my timer task and the lwIP network task goes into a foreverloop in vTaskDelay. Returns. Notice that it is especially unstable around 5V @ 25C, i. vTaskDelay cause system halt. Whereas vTaskDelay specifies a wake time relative to the time at which the function is called, vTaskDelayUntil specifies the absolute (exact) time at which it wishes to unblock. This is obvious as I need board to be initialized before creating tasks. So, Normal communication with that module using ESP32 is UART but to upgrade. This way the task will block for a maximum of 100ms waiting for semaphore to be given, after which it'll unblock and. Use a hardware timer, and interrupt. I don't use vtasksuspendall but it happens time to time (no. Once the program is launched, you can observe the tasks running in an orderly fashion. 1. print("Task1 running on core. The esp32 has WiFi and ESP-NOW active at the same time, receiving some data from another esp32. vTaskDelay() vTaskDelayUntil() uxTaskPriorityGet() vTaskPrioritySet() vTaskSuspend() vTaskResume() xTaskResumeFromISR() Task Utilities. Post by zazas321 » Wed Mar 16, 2022 6:51 am . )Jan 3, 2021. I would like to understand how does vTaskDelay work exactly. I tried to increase […]vTaskDelay for 1uS, possible?Posted by willywortel on December 3, 2008First of all, thanks everyone for the response so far. 1000Hz is. Board). If I use vTaskDelay(), instead of vTaskDelayUntil(), along xTaskAbortDelay(), the program runs smoothly. Kernel. Since the frequency of AVR's watchdog oscillator is voltage- and temperature-dependent, it isn't a good idea to use vTaskDelay for precise timing intervals. 1) Bug with IDF functions that internally call vTaskSuspendAll () The assert in vTaskDelay () checks to see if the uxSchedulerSuspended of the current core is set. What I saw is the before I complete the initialization of this toolkit the vTaskDelay function works. Here is an example from a FreeRTOS+TCP driver: ~~~~ /* The task is created and. Why is Serial. But I can't find the way how to delay microsecond in esp-idf. It is nothing to do with FreeRTOS – FreeRTOS is just source code that runs on the CPU, and the simulator is simulating the CPU. Understanding the vTaskDelay help. The example demonstrates in seven steps the process of switching from a lower priority task, called TaskA, to a higher priority task, called TaskB. It is the IDLE task that feeds the Task watchdog. Delay a task for a given number of ticks. Note that this is busy-waiting, so unlike vTaskDelay it does not allow other tasks to run (it just burns CPU cycles. Yes, this will work on non CM0 (+) parts. あと、こちらの関数を使う場合、ディレイ時間はTick単位になる。. First of all, set the clock source as internal clock. To other units. vTaskDelay is basically the same as Arduino delay () But if I remember correctly you have to divide it by the ticks per millisecond See the ESP documentation you can search for. Regards, Lukas. Parameters:vTaskDelay () specifies a time at which the task wishes to unblock relative to the time at which vTaskDelay () is called. Posted by richardbarry on January 26, 2012. Declaration: void delay (unsigned int); Here unsigned int is the number of milliseconds (remember 1 second = 1000 milliseconds). theskaz. Therefore a. I. Delay in C: delay function is used to suspend execution of a program for a particular time. The timebase is the same as for the values returned by esp_timer_get. vTaskDelay is no good for small mS delays. Kind regards. Top. It should work when the scheduler is running, just ensure to set the priority down before you call vTaskStartScheduler (). As I have observed that vTaskDelay is working on Tick Rate which gives milliseconds delay for application development but I want to prove some microseconds delay in my application. I am following the tutorial and using the example code from (Control the Basic ESC with the Arduino Serial Monitor) but substituted the default servo library for ESP32_Servo library. - Tasks running on device but which do not use vTaskDelay: xTaskCreate(uart_task, "uTsk", 3500, NULL, 11, &UART_TaskHandle); -> no vTaskDelay used xTaskCreate(GSM_uartTask, "UauxTsk", 4096, NULL, 11, &GSM_TaskHandle); ->. I managed to get USB HID working under FreeRtos. FreeRTOS support forum archive - 100 microseconds interval. _delay_us (1. I use the vDelayTask to let an LED blink with 1Hz in order to give feedback to the user that the code is running. Whereas vTaskDelay specifies a wake time relative to the time at which the function is called, vTaskDelayUntil specifies the absolute (exact) time at which it wishes to unblock. Delay是异步等待，Thread. Understanding the vTaskDelay help. I don't really see what I'm doing wrong here. h> #include <semphr. Delay a task for a given number of ticks. Basic idea is to get current clock and add the required delay to that clock, till current clock is less than required clock run an empty loop. What I was suggesting was using vTaskDelay to block for the longest time possible less than us, then using esp_timer_get_time to delay for the remaining time. Posted by aturowski on April 9, 2009. Theory: Calling portYIELD FROM ISR ( pdTRUE ) will result in a context switch being requested. Tickless idle support. Delay a task until a specified time. FreeRTOS is an open source, small footprint RTOS for microcontrollers. h) will allow you to busy-wait for a correct number of microseconds. I edited the example code and removed all I. A microsecond is equal to 1000 nanoseconds or 1⁄1,000 of a millisecond. Assumes a 8 or 16 MHz clock. So, does this vTaskDelay have same issue with OSIF_TimeDelay. TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with regard to these materials, including but not limited to all implied warranties and conditions of merchantability, fitness for a. So I know the stepper_task is not hanging. My idea was to create a freeRTOS task for the stepper motor on core 0, so that core 1 can run WiFi ESP-NOW, but I have a hard time managing microseconds delay by doing so. Hi, it's me again with more stupid questions. _delay_us (1. Properly disconnecting from the MQTT Broker is nice, especially with out a Last Will and Testament and properly closing the network connection is an OK thing do. I tried using the xSemaphoreGiveFromISR function. 1msに設定しなおした場合vTaskDelayでも結構いい線行っ. We will use this interrupt to release a semaphore for DHT11 task to operate. vTaskDelay for 1uS, possible?Posted by willywortel on December 3, 2008First of all, thanks everyone for the response so far. I have created a freertos task and I want it to repeat itself precisely every 2 seconds. Read part 1. But with a voltmeter we really see the voltage. I want to read analog signal via adc with sample rate about 48khz so when I read via adc and delay about 20us. vTaskDelay () is better for long or imprecise delays, because it lets another task wake up and run while the first task is suspended. vTaskDelay((200L * configTICK_RATE_HZ) / 1000L);. If it is false then I wait 60 microseconds and then continue. First execution ended at 30534 and the second one starts at 30534 too. // Sleep for 200 milliseconds. richard-damon (Richard Damon) June 22, 2020, 10:44am 3. My Tick Rate is 1024 Hz. I am currently learning FreeRTOS and I wanted to integrate as a task the code from the ultrasonic distance measure(HC SR04) example and simply print it into the serial, but at some points it measures wrong. Notice that it is especially unstable around 5V @ 25C, i. many thanks in advanceHello, currently working on a ESP32 Adafruit feather running FreeRTOS in an effort to log accel. Instead, the IDLE hook fires repeatedly. But vTaskDelayUntil () finishes immediately. However, during enumeration some USB hosts require a (small) response every 100uS. You should properly disconnect from the MQTT broker and WiFi before deep sleep. (I am also using the same. The pdMS_TO_TICKS () macro is used to convert milliseconds to ticks. I have analyzed and understood the Scheduling method using Task. n Disassembly of section . 1 seconds before something happens. This is just the demo tasks and not the kernel. The constant portTICK_RATE_MS can be used to calculate real time from the tick rate - with the resolution of one tick period. This page describes the vTaskDelay() FreeRTOS API function. Re: vTaskDelayUntil hangs. After a the execution of a function in the toolkit , the vTaskDelay stop to works. For delays longer than a few thousand microseconds, you should use delay () instead. g. The ROM function ets_delay_us() (defined in rom/ets_sys. Thanks for your generous help. I have currently implemented a method which uses a counter. One big issue is that the cost to run the scheduler can easily be big enough on many processors that such a delay is impractical. void vTaskDelayUntil ( TickType_t *pxPreviousWakeTime, const TickType_t xTimeIncrement ); INCLUDE_vTaskDelayUntil must be defined as 1 for this. Prescaler divides the Timer clock further, by the value that you input in the prescaler. Any feedback or ideas would be greatly appreciated. vTaskDelay () is better for long or imprecise delays, because it lets another task wake up and run while the first task is suspended. Dig. The timebase is the same as for the values returned by esp_timer_get. g. Difference between vTaskDelay and vTaskDelayUntil. 5000 Milliseconds = 5000000 Microseconds. I would like to toggle an output pin in the order of microseconds so use the function delayMicroseconds. h . I know the kernel tick rate affects. vTaskDelay (ledMode / portTICK_PERIOD_MS) when I call esp_err_t err = nvs_flash_init (); the result is this: Code: Select all. Currently, the largest value that will produce an accurate delay is 16383; larger values can produce an extremely short delay. 0 and port files SourceportableRVDSARM_CM4F (imported via RTE Keil). I encountered the same problem. If my kernel tick rate is set to 500 Hz does that mean that my 1 millisecond delay will be at. You will need to do two things to make vTaskDelay accessible. This page lists times between 10−6 seconds (1 microsecond) and 10 −5 seconds (10 microseconds). The easiest way to track down which task (s) are calling SPI flash functions would be to add an assert (0); at the first line of spi_flash_op_block_func () and spi_flash_disable_interrupts_caches_and_other_cpu (). cotestatnt October 20, 2022, 11:04am 1. The esp32 has WiFi and ESP-NOW active at the same time, receiving some data from another esp32. In the main. Understanding the vTaskDelay help. Hi @Esp_dazz, I'm facing same assertion issue. Use a hardware timer, and interrupt. The watchdog is "fed" in the IDLE task and while the APP_MAIN task has a higher priority than IDLE it is never interrupted. Interrupts could produce wrong timings, it could be useful to disable them until you finish to process the movement. Forces a task to leave the Blocked state, and enter the Ready state, even if the event the task was in the Blocked state to wait for has not occurred, and any specified timeout has not expired. all these are correct?. I am starting to presume that the stack size must also include variables declared in the task. Re: vTaskDelay. Most of it is functions related to controlling a nextion screen via serial and stepper motors. zazas321 Posts: 187 Joined: Mon Feb 01, 2021 9:41 am. – Codo. The task above calculates how long the task took to execute and then performs vTaskDelay including the timestamp_difference. ESP_Angus wrote:The RTOS tick period is (by default) 1ms, so vTaskDelay() will round this down to 0 ticks, and you'll either get no delay or a full time slice (1ms) delay while another task runs. Here is an example from a FreeRTOS+TCP driver: ~~~~ /* The task is created and. Viewed 3k times. You really helped me out! But again, i have another question. 1 Seconds = 1000000 Microseconds: 10 Seconds = 10000000 Microseconds: 2500 Seconds = 2500000000 Microseconds: 2 Seconds = 2000000 Microseconds: 20 Seconds = 20000000 Microseconds: 5000 Seconds = 5000000000 Microseconds: 3 Seconds = 3000000 Microseconds: 30 Seconds = 30000000 Microseconds: 10000 Seconds =.