time_utils.h File Reference

Utility functions for microsecond-level timing. More...

#include <stm32f4xx_hal.h>
#include <stdint.h>

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Functions
uint32_t	micros (void)
	Returns the number of microseconds since the timer started.
void	delay_us (uint32_t us)
	Delays execution for a specified number of microseconds.

Detailed Description

Utility functions for microsecond-level timing.

Provides lightweight timing utilities based on hardware timers, useful for precise control loop execution and delay functions.

Function Documentation

delay_us()

void delay_us

(

uint32_t

us

)

Delays execution for a specified number of microseconds.

Parameters

us	Delay duration in microseconds.

Note

Busy-wait implementation; not RTOS-friendly.

Delays execution for a specified number of microseconds.

Parameters

us	Number of microseconds to delay.

Uses a busy-wait loop based on the micros() counter.

Note

Not suitable for power-sensitive applications or inside ISRs.

micros()

uint32_t micros

(

void

)

Returns the number of microseconds since the timer started.

Returns

Elapsed time in microseconds as a 32-bit unsigned integer.

Note

Requires a configured timer (e.g., TIM2) running at 1 MHz.

Returns the number of microseconds since the timer started.

Reads the current counter value from the TIM2 peripheral.

Returns

Current microsecond timestamp as a 32-bit unsigned integer.