The Arduino core uses hardware Timer0 with its ISR (Interrupt Service Routine) for timekeeping. There are a thousand microseconds in a millisecond and a million. Please read and follow the instructions below. g. There are a thousand microseconds in a millisecond, and a million microseconds in a second. int outPin = 8; // digital pin 8. void delayMicroseconds(unsigned int us) { // for the 16 MHz clock on most Arduino boards // for a one-microsecond delay, simply return. 58 minutes this way though. Forum 2005-2010 (read only) General Frequently-Asked Questions. micros() has a 50ns overhead compared to High Precision Timer call. Then you can set up a timer to tick 4 times per microsecond, or even 16 times per microsecond, and get a much better resolution in your PWM. So, there is no Arduino function for timer interrupt. Serial communication that. c). Currently, the largest value that will produce an accurate delay is 16383. The delayMicroseconds () function will provide accurate delays as may be needed for some types of applications (e. On the boards from the Arduino Portenta family this function has a resolution of one microsecond on all cores. 5ns (1/16MHz = 62. A value of 500 ms in the delay function should be equivalent to 500000 µs in delayMicroseconds function, right? Anyone an idea what might be wrong?There is a lot of code in Arduino which looks like this: uint32_t start. The initialize function takes in the time in microseconds for. CrossRoads:In this tutorial, you will learn how to control a stepper motor with the TB6600 microstepping driver and Arduino. This could change in future Arduino releases. I also added in delay () for values in milliseconds. From the arduino reference page for delay the parameter for delay is an unsigned long. Timer 0 is initialized to Fast PWM, while Timer 1 and Timer 2 is initialized to Phase Correct PWM. In this way the LED blinks continuously while the sketch. So, that's your resolution. 関数解説 SerialBT. I did a bit more digging, and apparently the ESP8266 does support microsecond timers through ets_timer_arm_new () where the last parameter is zero. While delayMicroseconds() directly uses the value of the hardware timer, delay() and millis() are handled by the ISR. To use this library, open the Library Manager in the Arduino IDE and install it from there. the value returned is always a multiple of four). It is commonly used in obstacle avoiding robots and automation projects. agdl closed this as completed on Jan 9, 2015. Example code HC-SR04 with I2C LCD and Arduino. If the program needs to run longer than this, an extra counter might. 1周期が100マイクロ秒のパルスでLEDを点灯させます。. void delayMicroseconds(unsigned int us) { // for the 16 MHz clock on most Arduino boards // for a one-microsecond delay, simply return. Device Control. Arduino: delay() vs delayMicroseconds()Helpful? Please support me on Patreon: thanks & praise to God, and with tha. I am using an Arduino Due board. 125) will take exactly two CPU cycles on an UnoBut when I use _delay_ms(1000) it delays for 1 sec. For 1 microsecond delay, I got a count of 213. Well - as it turns out the reference from the Arduino website compiles just fine; int outPin = 8; // digital pin 8 void setup() { pinMode(outPin, OUTPUT); // sets the digital pin as output } void loop() { digitalWrite(outPin, HIGH); // sets the pin on delayMicroseconds(50); // pauses for 50 microseconds digitalWrite(outPin, LOW); // sets. The time module provides the following time, date, and delay-related functions. If not, just use millis (). For delays longer than a few thousand microseconds, you should use delay() instead. Using Arduino Programming Questions jaainaveen February 21, 2019, 5:29am 1 I have been working on an LED controller that uses a Return-to-zero protocol. Signal “high”-time has to be between 100 ns and 10000 ns. c" file, the function parameter is pre-decremented, effectively switching this zero to a large value. txt to re-calibrate the delay, but that really does not matter so much as you do not ever need to use delay anyway. I need to get six leds to blink without delay in microseconds (four ms resolution is more than enough). This could change in future Arduino releases. From the micros() reference:. Hello, Welcome to the Arduino Forum. )I have also messaged Rob Tillart who wrote stopwatch_RT and has written many arduino libraries, to ask similar questions. If for some reason you need to use millis() in the outer. I discovered this experimenting with a sound synthesis program with a variable for the. Instead of that I’m use a ticker event leaving the main loop complete empty – let the. Also be aware that the. However I would like to get a step up and simulate higher frequencies, up to 10000 Hz. Development Suggestions for the Arduino Project. A partir da versão Arduino 0018, delayMicroseconds () não. When the timer expired it would be triggered. mà chúng ta. Mô tả chức năng. Hi, I just found out that delayMicroseconds () produces only at 8 MHz clock correct values. kosuke_3615 November 23, 2023, 12:36pm 1. This number will overflow (go back to zero), after approximately 70 minutes. Which produces ~11. Using Arduino Programming Questions. It also allows to drive and manage the elements necessary to operate a digital milling machine (CNC). There are a thousand microseconds in a millisecond and a million microseconds in a second. In other words, we would have the LED blinking every 0. 5 microsecond wide pulse every 249 microseconds- any suggestions on a better way?. This sketch demonstrates how to blink an LED without using. Check out the implementation of delayMicroseconds() /* Delay for the given number of microseconds. First of all, you need to know what the millis() function does. 9ns. A typical servo uses 1500 microseconds as a center position signal. Setelah mempelajari Void, Void Setup, Void Loop, dan Serial Monitor pada artikel sebelumnya, kali ini kita akan mempelajari mengenai Delay, Pin Mode, dan Pemberian Perintah dasar pada ARDUINO IDE. So, we can rule out tmr. 1밀리초는 1000 마이크로 초, 1초는 100만 마이크로 초. Yes, depending your Arduino's basic clock rate. Everything seemed to be working well in my simulations, but whenever I built the circuit and looked at the timing on an oscilloscope all of my uS values seemed to be off. In general, it works already, but the servos are vibrating all the time. Two things: you cannot delay for 2 microseconds or 10 microseconds. I also used portTICK_RATE_MS but the speed didnt change . This discussion on sub-microsecond ESP timing seems well worth reading FYI If ESP Timers prove problematic, then I like your assembler-delay idea. Returns the number of microseconds since the Arduino board began running the current program. 29 platformioの設定ファイルを「platformio. For delays longer than a few thousand microseconds, you should use delay() instead. This could change in future Arduino releases. 10 Atmega1280 programmed with JTAGICE mkII and avrdude Ext. I've tried using delay() and. asm volatile ( "nop":: ) Now, you want to delay longer than that but potentially shorter than 1us. The time setting can be done manually through a network protocol or a battery backup. Duemilanove and Nano. 192 KHz. More knowledgeable programmers usually avoid the use of delay () for timing of events longer than 10’s of milliseconds unless the Arduino sketch is very simple. So, for example, to get exact milliseconds, you'd target option 2, 1KHz. attachInterrupt (). I was using a separate Arduino Micro and a simplest code with delayMicroseconds() and delay() functions. The following code controls a syringe pump, powered by a NEMA 17 Stepper motor that is driven with an a4988 stepper driver. 1 or // 2 microseconds) gives delays longer than desired. Some interesting info about delayMicroseconds(). This is apparently well known and will be. Better idea is, when caller will calculate before calling delayMicroseconds () or duplicate the bit-banging routines for two (or more) different clock speeds. 8 on a WIN10 machine for a generic ESP8266 board. Open Arduino IDE, select the right board and port. dmaxben Posts: 108 Joined: Thu Nov 16, 2017 6:04 pm. This number overflows i. This is a photoelectric water liquid level sensor that operates using optical principles. The first is a problem of calling it with an argument of 0 leading to a ~17mS delay. We are delaying here to make sure, that the HC-SR04 actually registered the level as LOW, even if it was HIGH before. For delays longer than a few thousand microseconds, you should use delay() instead. For accurate delays you need to turn off interrupts and can use avrlibc delays _delay_loop_1 executes three CPU cycles per iteration, not including the overhead the compiler needs to setup the. delayMicroseconds () deaktiviert ab Arduino 0018 keine Interrupts mehr. There are a thousand microseconds in a millisecond and a million microseconds in a second. 매개변수에 지정된 시간 (마이크로 초)동안 프로그램을 멈춘다. 4 times faster but not 64? The HC-SR04 ultrasonic sensor uses sonar to determine the distance to an object. millis() relies on interrupts to count, so it will never increment inside an ISR. This could change in future Arduino releases. This occurs in a systematic way and on both cores. 3cm (0. This could change in future Arduino releases. On 16 MHz Arduino boards (e. hatenablog. The HC-SR04 is an affordable and easy to use distance measuring sensor which has a range from 2cm to 400cm (about an inch to 13 feet). Step 3: Open the Example File in Your Arduino IDE. Forum 2005-2010 (read only) Software Bugs & Suggestions. Connect Arduino to PC via USB cable. HC-SR04 Hardware Overview. is this possible?. Typical drift is of the order of 1,000 ppm, and is affected by temperature and aging. Currently, the largest value that will produce an accurate delay is 16383. Next, import the library in your code by Sketch-> Include library. cpp 📋 Copy to clipboard ⇓ Download. The SRF05 module is an improved version of SRF04. Prescaler divides the Timer clock further, by the value that you input in the prescaler. us: 一時停止する時間。. Unsigned longs on the arduino can reach from 0 to 4,294,967,295. 096 KHz. Pauses the program for the amount of time (in microseconds) specified as parameter. Due to the fake STM32F103C8T6 module in the market, the delayMicroseconds function is working qucker than expected, when I expect a delay of 1000 us , I get a delay of 500 us. Arduino Stack Exchange is a question and answer site for developers of open-source hardware and software that is compatible with Arduino. So, you have to do something more like: for ( n = 1; n< 50; n++ ) { digitalWrite (pin, HIGH ); delayMicroseconds ( 2000 ); // send a 2ms pulse. The values will be in milliseconds. hàm delay () Cách hoạt động của hàm delay () khá đơn giản. 遅延を追加せずに数値を直接印刷すると、マイクロコントローラーが. Let’s fix this problem by using a hardware interrupt. Description. Assumes a 8 or 16 MHz clock. Robin2 October 7, 2013, 4:18pm 1. AceTime: Date, time, timezone classes for Arduino supporting the full IANA. Use the millis () function to give you the number of milliseconds since the arduino was turned on. sleep is the time to delay in seconds (not milliseconds). You should explicitly declare your delay value as an. 아두이노 0018 현재, delayMicroseconds () 는 더이상 인터럽트를 비활성화 하지 않는다. There is an OC (output enable) pin which, when grounded, gives output of selected byte from 8 I/O pins. 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. On 16 MHz Arduino boards (e. </p> </div> <div dir="auto"> <p dir="auto">Currently, the largest value that. cycles = (16,000,000 / 2,000,000) * 60,000,000 = 480,000,000. running a very short program on a mega, just to generate a 8 microsecond wide clock pulse on pin 18, every 250 microseconds- closest 'delay' values I can get are delayMicroseconds(3), and (83) off, gives a 7. I found that the following works more stable: range = (SysTick->LOAD + 1); return (ms * 1000) + ( (range - st) / (range / 1000)); This converts the counter in a scaled up counting value which is added to the milliseconds. Looking at delayMicroseconds (), it states that for this delay, a maximum of 16383 microseconds is possible for accurate timing. The actual range varies by manufacturer, model and, I believe, production run. All without using the delayMicroseconds() function. ), delay() uses the micros() function which itself requires timer interrupts to increment a counter. ) I have tried different values between 0 and 90, and 90 and 180 for the write command, and between 1000 and 1500, and 1500 and 2000 for the writeMicroseconds command, but the servo continues rotating at one speed (it seems its. 2. the overhead // of the function call yields a delay of approximately 1 1/8 us. Is there a better method, like to create separate module for counting in microseconds using micros timer?Then I assumed it's too fast so I added delay(1) in the loop and no crash occured anymore (code#2). As of Arduino 0018, delayMicroseconds () no longer disables interrupts. We’ll be using the DWT and STM32. Delay adalah salah satu kode dalam ARDUINO IDE yang fungsinya untuk memberikan waktu jeda pada perintah sebelumnya dan selanjutnya. This topic shows how to drive a BLDC motor using Arduino where the speed is controlled with a potentiometer. ino" file to open it in your Arduino IDE. A partir da versão Arduino 0018, delayMicroseconds () não mais desativa interrupções. (it is limited by a 16 bit microsecond counter divided by 2). The overhead // of the function call yields a delay of exactly a one microsecond. I already found an excellent example in Generating a short pulse after a delay that works in the range from ~5-32767 microseconds (it is limited by a 16 bit. by Khaled Magdy In this tutorial, you’ll learn how to use the Arduino delay function to add a time delay between events in your Arduino projects. There are 1,000 microseconds in a millisecond and 1,000,000 microseconds in a second. To get. You can easily find or write a piece of code that delays for 12500 nanoseconds (+/-62. Here is a code example for a 1-minute time delay in Arduino. e. There are a thousand microseconds in a millisecond and a million microseconds in a second. delayMicroseconds関数 delayMicroseconds関数は指定した時間(μs)プログラムを止めます。 使用例 Arduino IDEで使用するdelay関数の使い方は以下の通りです。試しにこのプログラムをArduino UNOで実行すると、13ピンのLEDが蛍の様に不規則に明るさが変化します。Pauses the program for the amount of time (in microseconds) specified by the parameter. Its. More knowledgeable programmers usually avoid the use of delay () for timing of events longer than 10’s of milliseconds unless the Arduino sketch is very simple. There are a thousand microseconds in a millisecond, and a million. Other functions such as the PWM analogWrite also uses timers. When the IDE opens, notice that it automatically opens the "Timer2_Counter. It offers excellent non-contact range detection with high accuracy and stable readings in an easy-to-use package from 2 cm to 400 cm or 1” to 13 feet. Timer 0 is initialized to Fast PWM, while Timer 1 and Timer 2 is initialized to Phase Correct PWM. A partir da versão Arduino 0018, delayMicroseconds () não mais desativa interrupções. 0. Depending on the clock speed, using digitalWrite could be taking a large part of that 10µs delay. Need some help. There are 1,000 microseconds in one. I use two OLIMEXINO 85 to implement a 2 channel remote control and control 2 digital servos. Serial communication that. If you want to make your Arduino sleep for 1 minute, or for multiple minutes, then it’s quite easy. 25 and 0. 注意. Standard servos allow the shaft to be positioned at various angles, usually between 0 and 180 degrees. Using large delays in loops isn’t recommended. e. Communication via TCP/IP becomes impossible. The Arduino micros () is a function that returns to you the time elapsed (in microseconds) since the Arduino board was powered up. 미래의 아두이노 릴리스에서 바뀔 수 있다. //delay_us(us); #if F_CPU >= 20000000L // for the 20 MHz clock on rare Arduino boards // for a one-microsecond delay, simply wait 2 cycle and return. As a part of my project I need to generate 10 microseconds pulses with 10 milliseconds intervals. There are a thousand microseconds in a millisecond, and a million microseconds in a second. The HC-12 module has a microcontroller which actually doesn’t have to be programmed by the user. There are a thousand microseconds in a millisecond, and a million microseconds in a second. Need some help. In your case, it will be the equivalent of: delayMicroseconds (2); because the conversion of a float to an int is simple truncation. delay (5) = 100 Hz at flow computer. Description. On the boards from the Arduino Portenta family this function has a resolution of one microsecond on all cores. Again, after a delay of value c2 the loop continues. delayMicroseconds() works in arduino. Serial. Syntax. yes, it did occur to me to place the variable inside the "time value" of the "delay ()" parameter, the compiler doesn't like it, it throws and error, it highlights that line and says "value is not ignored as is ought to be" apparently the parameter "delay ()" is something you can't change like a variable, it can. In my code, I have 4. This would mean the delay is limited to a max of 32,767. That is one clock cycle, the shortest interval the Arduino UNO can measure. The respective interrupt gets fired even if you don't use delays. delayMicroseconds () will work in the interrupt routine because it just sits in a busy loop. Your minimum delay and increment will be 4 ms. The respective interrupt gets fired even if you don't use delays. Some ports allow specifying the delay time as a floating-point number. This number represents the time and is measured in microseconds. Go to repository. h) will allow you to busy-wait for a. The Arduino uses Timer 0 internally for the millis() and delay() functions, so be warned that changing the frequency of this timer will cause those functions to be erroneous. Hiện tại, giá trị. The delay has to be configurable to sub microsecond resolution. The delay function will produce four times the delay at 4 MHz as it will at 16 MHz. the value returned is always a. The advantages of this photoelectric water liquid level sensor are good sensitivity. I have some code running as a FreeRTOS task on my ESP32. On the Arduino 16mgz the timing resolution is limited to 4 microseconds and the 8mgz is 8 microseconds. Arduino's pins can generate a 10-microsecond pulse and measure the pulse duration. The measure of delay is the same between the two functions. Não é possível assegurar que delayMicroseconds () irá funcionar corretamente para valores menores. This code sets the prescaler to 1024, as slow as you can get. You can use a delay loop: you delay for one microsecond in each iteration, and do as many iterations as microseconds you have to burn: void delay_us (unsigned long us) { while (us--) _delay_us (1); } There are, however, a few issues with this approach: it takes time to manage the iterations (decrement the. This could change in future Arduino releases. It turns the LED on and then makes note of the time. The ultrasonic sensor: automatically emits the. A lot of Arduino functions uses timers, for example the time functions: delay, millis, micros and delayMicroseconds. delayMicroseconds (0) Forum 2005-2010 (read only) Software Bugs & Suggestions. refer to writeMicroseconds () Writes a value in microseconds (uS) to the servo, controlling the shaft accordingly. delay() is a. What should ı do to adding microsecond delay? Here is the sample code : for(int32_t i = stepper1. begin()は、Bluetoothシリアルに名前を指定します。指定した名前でペアリングします。 SerialBT. Currently, the largest value that will produce an accurate delay is 16383. It's not advisable to make the tick period any shorter than 1ms. Currently, the largest value that will produce an accurate delay is 16383. The way the Arduino delay() function works is pretty straight forward. 29 platformioの設定ファイルを「platformio. There are a thousand microseconds in a millisecond and a million microseconds in a second. Pauses the program for the amount of time (in microseconds) specified as parameter. This could change in future Arduino releases. I was wondering what the difference between these two is, because it seems to me that they're the same. First of all we need to trigger the ultrasonic sensor module to transmit signal by using arduino and then wait for receive ECHO. Before we overflow (about 71 minutes and. 2. Provide details and share your research! But avoid. Não é possível assegurar que delayMicroseconds () irá funcionar corretamente para valores menores. In the following code snippet my goal is to have a period of. Pauses the program for the amount of time (in microseconds) specified as parameter. The normal delay function (in comments) works fine. I'm messing around with the following code: #define cyclespermicro 240 #define microcycles (n) (n*cyclespermicro) uint32_t startCounter, counter, cpu_cycles; int. Currently, the largest value that will produce an accurate delay is 16383. 4 times faster than normal. elapsedMillis. See the Arduino source file wiring. delayMicroseconds (us) : the number of microseconds to pause. This could change in future Arduino releases. However, this crashes my ESP32 every time. Using Raspberry Pi to produce 'beep' through piezo transducer. Não é possível assegurar que delayMicroseconds () irá funcionar corretamente para valores menores. 이 함수는 3 마이크로 초 이상 범위에서 매우 정확하게 돌아간다. There is Attiny85, with an internal clock source at 8 MHz. esp_timer set of APIs provides one-shot and periodic timers, microsecond time resolution, and 64-bit range. Then I thought to make the delay smaller so I changed delay(1) to delayMicroseconds(100) and it did crash again. It always. Theremino: a theremin made with Arduino. Có một nghìn micro giây trong một phần nghìn giây và một triệu micro giây trong một giây. It seems like delayMicroseconds () is much easier for my application, but it is not very accurate. Hi, I have several tasks in freeRTOS on my ESP32 delaying with the vTaskDelay-function. 1밀리초는 1000 마이크로 초, 1초는 100만 마이크로 초. All good so far, using the delay command I can read frequencies up to 494 Hz, with the delay 1 microseconds. A well known Arduino function is delay() which pauses the program for an amount of milliseconds specified as parameter. For Arduino Zero, MKRZero and MKR1000 only. sleep (seconds): This blocking method provides a delay in seconds. With simple Blink code with Microsecond delay i can acheive 5. With single digit millisecond or the microsecond. Makes coding responsive sketches easier. This version. _delay_us (1. You can delay that small by doing something like. The terms I used were "arduino change. MHz May 14, 2016, 6:14pm 1. you just give it the number of ms to delay. Digital Pins Usable For Interrupts. Since the Arduino Uno R3 development board maintains a 16MHz external clock signal on the onboard ATMega328p, the microcontroller executes a 1 clock-cycle instruction in exactly 62. Listen to piezo buzzer's sound. jairotd25 November 22, 2023, 9:37pm 1. 8. There are a thousand microseconds in a millisecond and a million microseconds in a second. The off-the-shelf micros() function has a resolution of 1/256th of about a millisecond, so pick 4, 8 or 12. The function of delay () is in both cases correct. Inside an interrupt handler, all other interrupts are suspended so the millis () counter doesn't count and delay () never ends. On my blue pill, delayMicroseconds() consistently does only half of the required delay; delay() works fine (or else both millis() and delay() are wrong :-) ). The following code outputs 5012 or 5013: Serial. Pauses the program for the amount of time (in microseconds) specified as parameter. 설명. This could change in future Arduino releases. Currently, the largest value that will produce an accurate delay is 16383. See the Arduino Reference guide for delayMicroseconds(). 1. 9ns. There are a thousand. Unzip the package from point 1. Still, interrupts (e. delayMicrosecond bugs. There are a thousand microseconds in a millisecond and a million microseconds in a second. Basically, I found out that delayMicroseconds(x) delays (on Arduino UNO, 16MHz) 7 Clock cycles for (x = 0, 1) 14 Clock cycles Short for (x >= 2) I noticed a too quick delay on 'x = 2' case. . Não é possível assegurar que delayMicroseconds() irá funcionar corretamente para valores menores. Which worked out to 213-160 = 53 counts (53 x 6. A prescaler of 1024 allows for a maximum time of. begin(); } void loop() { uint3. This example delays by 500ms: esp-idf-equivalent-to-arduino-delay. As you pointed out delay works fine in Arduino IDE, if you consider Arduino as component to be unsupported then please close this issue!Measuring the Speed of Sound With Arduino Microcontroller and Ultrasonic Sensor: My 6 year old daughter, Samatha, demonstrates how to measure the speed of sound in air with Arduino Uno microcontroller and ultrasonic sensor. ini」 に修正しました。 The Arduino micros () is a function that returns to you the time elapsed (in microseconds) since the Arduino board was powered up. 1000 microseconds is full left and 2000 microseconds is full right. But there is a way. 0 License. For configuring the module we simply use AT commands, which can be sent from an Arduino, a PC, or any other microcontroller using the serial port. delay 가 몇 천 마이크로 초 보다 길면, 대신 delay. Click Upload button on Arduino IDE to upload code to Arduino. Pito's answer works, but more importantly, do you understand why it works? Also, the #include directive was never intended to be used with source code files (e. "the largest value that will produce an accurate delay is 16383". 1. I have some code running as a FreeRTOS task on my ESP32. Pauses the program for the amount of time (in microseconds) specified as parameter. Note that it’s 72-1, because the prescaler will add 1 to any. Pauses the program for the amount of time (in microseconds) specified as parameter. Currently, the largest value that will produce an accurate delay is 16383. See BlinkWithoutDelay (code below). - GitHub - nw-wind/SmartDelay: The SmartDelay class for non blocking delays in arduino sketches. Jeg_1 March 22, 2017, 6:27pm 3. How delay() Function Works. Anmerkungen und Warnungen. F_pwm=16mhzP_clock=16mhz. If the parameter is calculated inside of a user code, this zero can be unexpected outcome leading to the confusing huge delay. h and the _delay_ms (), _delay_us () functions. Then make the PWM pin 12 th of Arduino HIGH and then after a delay of value c1 make that pin LOW. Arduino cung cấp bốn chức năng thao tác thời gian khác nhau. afremont March 29, 2013, 9:35am #1. Theremino is a theremin built with an Arduino UNO and two ultrasound sensors. long duration; digitalWrite (trigger, LOW); delayMicroseconds (2); digitalWrite (trigger, HIGH); delayMicroseconds (10); digitalWrite (trigger, LOW); duration = pulseIn (echo, HIGH); distance = (duration/2) / 29. I suspect that the delay () method somehow is disabling the I2C ISR from. Pauses the program for the amount of time (in microseconds) specified as parameter. For example, if you connect to pin 3, use digitalPinToInterrupt (3) as the first parameter to attachInterrupt (). TaskScheduler. The first delay of 2us is to make sure we are at an established LOW level on the trigger pin, since the pin might have been HIGH before that. Certain things do go on while the delay () function is controlling the Atmega chip, however, because the delay function does not disable interrupts. x that does not require using a hardware timer peripheral and an ISR? I’m thinking similar to the Arduino delayMicroseconds() function. 1 Answer. 024 KHz.