The fix is simple: ESP32 has timers with hardware predividers, so this small piece of code just sets up TIMG0_T0 to run on 1 MHz, dividing APB clock by 80. Then, micros() is just two instructions to read the 32-bit micros value from the timer.

September 16, 2020 - Hi all, Being aware of the following bug with micros() function in ESP32 arduino, I have jumped into the FOCutils.cpp file and seen that the bug is probably called ☹ The bug is explained here: https://github.com/espressif/arduino-esp32/issues/1168 Trust me micros() is not reliable with ESP32.

March 23, 2017 - Calling micros() twice is in a row, takes nearly 50uS. Something line: uint32_t t0 = micros(); uint32_t t1 = micros(); uint32_t delta_t = t1 - t0; printf( "Delta = %u\n", delta_t ); // this prints around 51 on my system. Looking at the i...

unsigned long IRAM_ATTR micros() { return (unsigned long) (esp_timer_get_time()); } How can i solve this, without hacking the library? Is there a way to add an offset by app to esp_timer_get_time()? - Perhaps by using a wake stub, which adds a sleep time offset immediately after wake up? - Or is there a way to overwite the micros() function of arduino-esp32 with a customized version?

4 days ago - These chips feature a variety of processing options, including the Tensilica Xtensa LX6 microprocessor available in both dual-core and single-core variants, the Xtensa LX7 dual-core processor, or a RISC-V microprocessor. In addition, the ESP32 incorporates components essential for wireless ...

May 31, 2022 - Hi everyone, I would like to measure a pulse duration of 32us (4 clock cycles at 125kHz). Therefor I set an interrupt on the according pin. The interrupt is triggered with the rising and falling edge and store the start & endtime with the funktion micros() in two diffrent variables.

What Is micros() and Why Use It? The micros() function tells you how many microseconds have passed since the ESP32 started running. It’s like having an ultra-fast stopwatch in your program.

March 12, 2022 - On ESP32, micros() takes about 150 cycles. I'm using 80MHz CPU clock to avoid wasting power, delayMicroseconds() calls micros() at least twice. This means delayMicroseconds() takes at least 330 cycles, corresponding to a delay of more th...

August 17, 2023 - The Arduino micros() is a function that returns to you the time elapsed (in microseconds) since the Arduino board was powered up. Which can be used to create a time base for various events in your applications (like LED blinking, short pulse ...

Hi All, Please let me know if anyone has achieved this type of micro seconds delay support in application firmware. I need 10 and 40 microseconds delay support as per request. ... The arduino-esp32 core achieves this using the following code for the delayMicroseconds() func.

April 26, 2018 - Board: ESP32 DEVKITV1 Core Installation/update date: 25/apr/2018 IDE name: Arduino IDE/IDF component Flash Frequency: 80Mhz Upload Speed: 115200 · micros() returns strange values when using arduino-esp32 as component of esp-idf, millis() returns ...

March 20, 2026 - As you'd expect from an ESP32, there's wireless connectivity: single-band IEEE 802.11b/g/n Wi-Fi plus Bluetooth 5 Low Energy (BLE) with Bluetooth Mesh support, the radios for both of which share a single on-board antenna. The module's various features are then brought out to castellated pin headers in the Pro Micro format, with 22 user-accessible general-purpose input/output (GPIO) pins and SPI, UART, I2C, I2S buses, a TWAI controller compatible with CAN 2.0, and pulse-width modulation (PWM) plus analog to digital converter (ADC) pins.

October 2, 2025 - How to install and test the Esp32 in the Arduino IDE and Visual Micro.

June 5, 2025 - This function returns the number of microseconds since the Arduino board began running the current program.

May 29, 2024 - Espressif Systems, the manufacturer of the ESP32 ecosystem, has created powerful and affordable System-on-Chip (SoC) devices that integrate Wi-Fi, Bluetooth, and central processing units (CPUs) into one microcontroller package, allowing these ...