bldc

说明：  超声波模块hc-sr04基于f4的超声波测距实验(Ultrasonic ranging experiment of hc-sr04 ultrasonic module based on F4)

黑金动力原创nios ii教程，介绍了硬件、软件开发流程，提供了led、中断、串口、rtc、spi、iic、定时器等十多个实验的详细介绍(Alinx original nios ii tutorial, this paper introduces the hardware and software development process, and provides led, interrupt, a serial port, the RTC, spi, iic, timer and so on more than a dozen experiments in detail)

说明：  超过液位后警示灯动作，提示或警告液面已经到达警示位(Warning lamp action after exceeding liquid level)

说明：  微机原理中学到的，依据CPU原理实现的简易CPU系统。(A KIND OF CPU SYSTEM.MADE BY TSINGHUA UNIVERSITY ELECTRONIC ENGINEERING.)

说明：  基于Arduino。UNO的超声波测距，红外感应人体，液晶显示屏代码。(It's based on Arduino. UNO. It's some codes for Ultrasonic ranging, infrared induction of human body, LCD display.)

数码管显示的单片机代码，不是很难，但是还是有看点的(Digital display of the microcontroller code is not difficult, but there are still things to watch for)

NUC100最小系统！此包含48PIN和100PIN！(Support 8G SD card, personally TESTED!)

通过comm口，读取外部压力或温度传感器的数据，并显示在界面上(Comm port by reading data the external pressure or temperature sensor, and displayed on the screen)

stm32f1控制AD9854生成两路正交的正弦波(stm32f1 Controls AD9854 to Generate Two Orthogonal Sinusoidal Waves)

本代码为本人用8PS538 8脚单片机写的7彩渐变程序，渐变过程很缓和，渐变时间为3秒，有不懂QQ：1063754468(I used this code for 8PS538 8-pin single-chip color gradient 7 written procedures, a gradual process is very relaxed, and gradually the time was 3 seconds, there do not QQ: 1063754468)