/*
 * Copyright (c) 2006-2019, RT-Thread Development Team
 *
 * SPDX-License-Identifier: MIT License
 *
 * Change Logs:
 * Date           Author       Notes
 * 2019-06-13     SummerGift   first version
 */

import utime

utime.sleep(1)                                    # sleep for 1 second
utime.sleep_ms(500)                               # sleep for 500 milliseconds
utime.sleep_us(10)                                # sleep for 10 microseconds
start = utime.ticks_ms()                          # get value of millisecond counter
delta = utime.ticks_diff(utime.ticks_ms(), start) # compute time difference
print(utime.ticks_add(utime.ticks_ms(), -100))
print(utime.ticks_add(0, -1))