This project provides a general purpose library which implements read and write support for MMC, SD and SDHC memory cards. Written in ANSI C portable for several microcontrollers.
标签： implements provides project general
上传时间： 2014-01-21
上传用户：zhangyigenius
ATMEL，教材，Practical AVR microcontrollers - Alan Trevennor
标签： ATMEL;教材;
上传时间： 2015-03-30
上传用户：bluetang
Microprocessors are getting smaller, cheaper and faster. Every day, it is easier to embed more functionality into a smaller space. Embedded processors have become pervasive, and as time goes on, more and more functions that were once implemented with analog circuitry or with electromechanical assemblies are being realized with microcontrollers, ADCs and DACs. Many of these assemblies that are being supplanted by the microprocessor are controlling dynamic processes, which is a good thing, because the microprocessor coupled with the right software is often the superior device.
上传时间： 2016-07-20
上传用户：kunger
DESCRIPTION The Texas Instruments MSP430 family of ultra-low-power microcontrollers consists of several devices featuring different sets of peripherals targeted for various applications. The architecture, combined with five low-power modes, is optimized to achieve extended battery life in portable measurement applications. The device features a powerful 16-bit RISC CPU, 16-bit registers, and constant generators that contribute to maximum code efficiency. The digitally controlled oscillator (DCO) allows wake-up from low-power modes to active mode in less than 1 μs. The MSP430G2x13 and MSP430G2x53 series are ultra-low-power mixed signal microcontrollers with built-in 16- bit timers, up to 24 I/O capacitive-touch enabled pins, a versatile analog comparator, and built-in communication capability using the universal serial communication interface. In addition the MSP430G2x53 family members have a 10-bit analog-to-digital (A/D) converter. For configuration details see Table 1. Typical applications include low-cost sensor systems that capture analog signals, convert them to digital values, and then process the data for display or for transmission to a host system.
上传时间： 2018-12-25
上传用户：ygyh
This book was written by Michael Margolis with Nick Weldin to help you explore the amazing things you can do with Arduino. Arduino is a family of microcontrollers (tiny computers) and a software creation envi- ronment that makes it easy for you to create programs (called sketches) that can interact with the physical world. Things you make with Arduino can sense and respond to touch, sound, position, heat, and light. This type of technology, often referred to as physical computing, is used in all kinds of things, from the iPhone to automobile elec- tronics systems. Arduino makes it possible for anyone—even people with no program- ming or electronics experience—to use this rich and complex technology.
上传时间： 2020-06-09
上传用户：shancjb
Building a robot and enabling it to sense its environment is a wonderful way to take your Arduino knowledge to the next level. In writing this book, I have brought together my love for invention and my experience with electronics, robotics and microcontrollers. I hope you have as much pleasure building and enhancing your robot as I did developing the techniques contained in this book.
标签： Arduino-Controlled Robot Make an
上传时间： 2020-06-09
上传用户：shancjb
通过采用无桥PFC和半桥LLC谐振变换器作为数字开关电源的主变换拓扑,基于STM32系列微控制器的全数字控制PFC和DC-DC变换器,首先对数字化开关电源方案进行对比,然后阐述了200W数字开关电源整体方案,并对数字开关电源的无桥PFC和半桥LLC变换器进行系统研究。By using a bridgeless PFC and a half-bridge LLC resonant converter as the main conversion topology of the digital switching power supply,the all-digital control PFC and DC-DC converter based on the STM32 series of microcontrollers,firstly the digital switching power supply scheme is compared,and then the overall scheme of 200 W digital switching power supply is expounded, and the bridgeless PFC and half-bridge LLC converter of digital switching power supply are systematically studied.
标签： 数字开关电源
上传时间： 2022-04-02
上传用户：qingfengchizhu
一、 实验目的使用 51单片机的八位数码管顺序显示自己的学号。掌握 C 语言、汇编语言两种编程单片机控制程序的方法。掌握使用 Keil 4 或 Keil 5 软件编写、编译、调试程序的方法。掌握使用 Proteus 软件绘制电路原理图、硬件仿真和程序调试。二、实验设备笔记本电脑51 单片机（普中科技）八位数码管（单片机上已集成）应用程序：Proteus 8.0、Keil uVision5、stc-isp-v6.88E三、实验原理（1）数码管数码管按段数可分为七段数码管和 8 段数码管，八段数码管比七段数码管多一个发光二极管单元，也就是多一个小数点(DP)，这个小数点可以更精确的表示数码管想要显示的内容。按能显示多少个(8)，可分为 1 位、2位、3位、4位、5 位、6位、7 位等数码管。按发光二极管单元连接方式可分为共阳极数码管和共阴极数码管。共阳数码管是指将所有发光二极管的阳极接到一起形成公共阳极(COM)的数码管，共阳数码管在应用时将公共极 COM 接到+5V，当某一字段发光二极管的阴极为低电平时，相应字段就点亮，当某一字段的阴极为高电平时，相应字段就不亮。共阴数码管是指将所有发光二极管的阴极接到一起形成公共阴极(COM)的数码管，共阴数码管在应用时应将公共极 COM 接到地线 GND上，当某一字段发光二极管的阳极为高电平时，相应字段就点亮，当某一字段的阳极为低电平时，相应字段就不亮。（2）51单片机单片机（microcontrollers）是一种集成电路芯片，是采用超大规模集成电路技术把具有数据处理能力的中央处理器 CPU、随机存储器 RAM、只读存储器ROM、多种 I/O口和中断系统、定时器/计数器等功能集成到一块硅片上构成的一个小而完善的微型计算机系统，在工业控制领域广泛应用。MSC-51 单片机指以 8051为核心的单片机，由美国的 Intel 公司在 1980 年推出，80C51 是 MCS-51系列中的一个典型品种；其它厂商以 8051为基核开发出的CMOS 工艺单片机产品统称为 80C51 系列。本实验中我使用普中科技的 51 单片机来点亮八位数码管并使其显示我的学号（20198043）。四、 实验 过程（1）熟悉数码管使用 Proteus 软件构建电路图，学会如何点亮数码管，熟悉如何使数码管显示不同的数字（0-9）。我们可以按照上面的原理图让对应的段导通，以显示数字。对于共阳数码管，若显示数字 0，可以让标号为 A，B，C，D，E，F 的段导通，标号为 G，H 的段不导通，然后将阳极通入高电压，即显示数字 0。代码举例如下：最后效果如下，成功点亮一个数码管。经过更多尝试和学习，学会使多位数码管显示多位数字。结果举例如下：（2）多位数码管显示学号为了显示我们学号，就不能只使用一位数码管，需要使用八位数码管，相较于单位数码管，多位数码管更加复杂，驱动函数有很大区别。多位数码管使用同一组段选，不同的位选，因此就不能够一对一地固定显示，这就需要动态扫描。动态扫描：利用人眼视觉暂留，多位数码管每次只显示一位数字，但是切换频率大于 200HZ（50 × 4），这样就能让人产生同时显示多个数字的错觉。具体操作是轮流向数码管送字形码和相应的位选。一个完整的驱动程序不只以上这些，一个完整的数码管驱动有 6部分：1. 码表（ROM）：存储段码（一般放在 ROM中，节省 RAM空间），例如数字 0的段码就是 0xC0，码表则包含 0-9的段码2. 显存（RAM）：保存要显示的数字，取连续地址（便于查表）3. 段选赋值：通过查表（码表）操作，将显存映射到段码4. 位选切换：切换显示的位置5. 延时：显示的数字短暂保持，提升亮度6. 消影：消除切换时不同位置互相影响而产生的残影
上传时间： 2022-06-08
上传用户：canderile
Agenda■Motor Types Overview■BLDC Motor Applications■Comparison of DC to Brushless DC Motors■Hall Sensors■Six-Step Commutation■Sensorless Commutation with Back-EMFVector Motor Control basicsClosed-Loop Speed Control■Introduction to BLDC Motor Control Evaluation Kit■SummaryAll the popular motor types have their specific applications, and all can be controlled with microcontrollers.We wll talk about Brushless DC motors as it is the fast growing motor type today.Motors used in modern Air conditioners, home appliances, tools, even electric bikes are all going to Brushless DC.
上传时间： 2022-07-07
上传用户：
基于LabVIEW的ARM Cortex-M3嵌入式开发宝典电子书内容简介第 1 篇 软件篇1.1 LabVIEW Embedded Module for ARM microcontrollers 模块介绍1.2 Keil RealView MDK 软件介绍1.3 Keil RTX 实时操作系统介绍1.4 LabVIEW ARM Module 软件架构1.5 LabVIEW ARM Module、RealView MDK、实验平台驱动软件安装1.6 STM32 实验范例查找与 USB JLink-OB 驱动加载第 2 篇 硬件篇2.1 ARM Cortex-M3 内核简介2.2 实验平台介绍2.2.1 STM32 Starter Board（学习板）介绍2.2.2 STM32 Core Board（核心板）介绍2.2.3 STM32 DAQ Board（数采板）介绍 2.3 实验平台资源说明2.3.1 STM32 Starter Board 资源简介2.3.2 STM32 Core Board 资源简介2.3.3 STM32 DAQ Board 资源简介2.4 My_ARM 实验平台总结与展望第 3 篇 基础模块篇（附原理图）3.1.1 GPIO 介绍3.1.2 GPIO 工作原理3.1.3 GPIO 驱动实现3.1.4 GPIO 两种驱动方式比较3.1.5 GPIO 总结3.2 ADC/DAC3.2.1 ADC 介绍3.2.2 ADC 驱动实现3.2.3 DAC 介绍3.2.4 DAC 驱动实现3.3 中断（60 线）3.3.1 外部中断（19 线）3.3.1.1 外部 I/O 中断（GPIO：16 线）3.3.1.2 外部特定中断（PVD、RTC、USB：3 线）3.3.2 外部中断的驱动实现3.3.3 定时器中断（TIM2~TIM5、TIM6、TIM7、TIM1、TIM8）3.3.3.1 基本定时器中断 3.3.3.2 通用定时器中断3.3.3.3 高级定时器中断3.3.4 定时器中断驱动实现3.3.4.1 更新中断驱动实现3.3.4.2 输入测量驱动实现3.3.4.3 编码器驱动实现3.4 PWM 生成3.4.1 PWM 原理、应用3.4.2 PWM 驱动实现3.4.3 PWM 设置技巧3.5 看门狗3.5.1 独立看门狗（IWDG）介绍3.5.2 独立看门狗驱动实现3.5.3 窗口看门狗（WWDG）介绍3.5.4 窗口看门狗驱动实现3.6 TFTLCD 显示、触摸屏操作、OLED 显示3.6.1 TFTLCD 工作原理3.6.2 TFTLCD 显示驱动实现3.6.3 触摸屏工作原理3.6.4 触摸屏驱动实现3.6.5 OLED 工作原理3.6.6 OLED 驱动实现.............
上传时间： 2022-07-17
上传用户：
