Sleep future each time around, but it doesn't want to restart foo, so it
One of the pins is programmed to produce a constant 1000 KHz square wave using PIO. The main program then turns the PIO on and off at the intended frequency. e.g. to emit an A4 pitch (440 Hz), it turns the 1000 KHz square wave on and off 440 times a second. To the radio receiver, this means a 440 Hz square wave audio. Using this technique, it emits the well-known Shave and A Haircut melody on a loop.
，这一点在雷电模拟器官方版本下载中也有详细论述
"In other countries they might spend a lot of time at work, but that doesn't mean they work a lot. Changing the culture and the mindset is the biggest challenge."
Holi is based on the Hindu legend of Holika, a female demon, who tries to kill her nephew Prahlad because he worships the Hindu god Vishnu. But Prahlad miraculously survives the burning fire even as Holika is consumed by the flames.