基于RSSI加权数据融合的TDOA定位算法_赵峰

说明：  超声波测距，通过声波测出距离，并打印到串口上(Ultrasonic ranging)

关于大数据处理的论文，以当前流行的Hadoop为基础，提出优化MaoReduce计算模型的方法(Papers about big data processing, on the basis of the current popular Hadoop, MaoReduce calculation model optimization method is put forward)

说明：  使用STM32驱动AD9954 DDS模块(Driving the AD9954 DDS Module with STM32)

test 放光二级管闪烁 test stc89c52rc lcd1602(test stc89c52rc lcd1602)

在原有基础上添加了新的功能，如EEPROM存储数据，选择更人性化(Based on the original by adding new features such as EEPROM to store data, choose a more humane)

555定时器（时基电路）是一种用途广泛的模拟数字混合集成电路。1972年由西格尼蒂克斯公司（Signetics）研制；设计新颖、构思奇巧，备受电子专业设计人员和电子爱好者青睐；它可以构成单稳态触发器、多谐振荡器、施密特触发器和压控振荡器等多种应用电路。5 55定时器是一种中规模集成电路，它使用灵活、方便，被广泛应用于脉冲的产生、整形、定时和延迟等电路中。文中介绍了555定时器及其逻辑功能，以及由其构成的多谐振荡器的工作原理，通过举例论述了555多谐振荡器在模拟救护车声响电路中的应用，说明在实际生产中，只要将其各个功能加以综合应用，便可得到许多实用电路。 (555 timer (time base circuit) is a versatile analog-digital hybrid integrated circuit. Trinity Lakes in 1972 by Sigma Corporation (Signetics) development layout and design, the idea of Kit Kat, much electronics design professionals and electronic enthusiasts favor it can constitute a monostable, multivibrator, Schmitt Triggers, and a variety of applications such as voltage-controlled oscillator circuit. 5 Timer 55 is a medium scale integrated circuit, which uses a flexible, convenient, and is widely used in pulse generation, shaping, timing and delay circuits. This paper introduces the 555 timer and logic functions, and its composition multivibrator works, discussed through the example of 555 ambulances multivibrator sound in analog circuit applications, showing in the actual production, as long as Will be integrated application of its various functions can be many practical circuits. )

stm8l15x软件模拟I2C,使用模拟I2C读写AT24C512(stm8l15x software simulation I2C, analog I2C write AT24C512)

说明：  关于stm32的高级应用部分代码历程，stm32的代码。(About STM32 advanced application part of the code process.)

51单片机中利用PCF8591进行D/A转换在示波器中显示三角波(51 MCU PCF8591 using the D/A converter in the oscilloscope display triangular wave)

说明：  适用MINI板的基础例程 STM32奋斗板2M U盘-mini(Basic routines applicable to MINI boards)