Using Internal EEPROM of PIC Microcontroller

There are commonly three types of memories in a PIC Microcontroller, Flash Program Memory, Data Memory (RAM) and EEPROM Data Memory. We write Programs in the Flash Program Memory of a microcontroller. Flash memory makes it possible to program a micro…

RFID 仿真/模拟/监控/拦截/检测/嗅探器

Sound card based RFID sniffer/emulator (Too tired after recon.cx to do draw the schematics better than that :) Stay tuned for the next version including Tag emulation.) baudline FFT signal analyzer for sniffing LF RFID tags using our sound card based…

PID控制器（比例-积分-微分控制器）- I

形象解释PID算法小明接到这样一个任务: 有一个水缸点漏水(而且漏水的速度还不一定固定不变),要求水面高度维持在某个位置,一旦发现水面高度低于要求位置,就要往水缸里加水. 小明接到任务后就一直守在水缸旁边,时间长就觉得无聊,就跑到房里看小说了,每30分钟来检查一次水面高度.水漏得太快,每次小明来检查时,水都快漏完了,离要求的高度相差很远,小明改为每3分钟来检查一次,结果每次来水都没怎么漏,不需要加水,来得太频繁做的是无用功.几次试验后,确定每10分钟来检查一次.这个检查时间就称为采样周期. 开…

LPCScrypt, DFUSec : USB FLASH download, programming, and security tool, LPC-Link 2 Configuration tool, Firmware Programming

What does this tool do? The LPC18xx/43xx DFUSec utility is a Windows PC tool that provides support functions for LPC18xx/43xx microcontroller via USB. The tool is composed of 3 components: the Image Programmer, the LPC-Link 2 Configuration Tool, and…

introduction to my business card

http://www.t4f.org/projects/business-card/ After 4 years working in an international IT consulting company, I have decided that now it is time to change my current professional career. The world of the business software (for banking, insurance, servi…

Android 笔记

一.MTK Android version在文件下build/core/version_defaults.xml下定义. 二.Android 重新编译frameworks/base/core/res资源文件生成的apk在哪? 在开发过程中,尤其是Framework相关开发时,有时候需要重新编译资源文件.编译顺序和注意事项如下: 1,资源文件位置:frameworks/base/core/res 2,编译后生成的文件:framework-res.apk 另外com.android.internal…

Django整合Keras报错：ValueError: Tensor Tensor("Placeholder:0", shape=(3, 3, 1, 32), dtype=float32) is not an element of this graph.解决方法

本人在写Django RESful API时,碰到一个难题,老出现,整合Keras,报如下错误:很纠结,探索找资料近一个星期,皇天不负有心人,解决了 Internal Server Error: /pic/analysis/ Traceback (most recent call last): File "D:\AI\Python35\lib\site-packages\tensorflow\python\client\session.py", line 1064, in _run a…

编译android framework的例子【转】

本文转载自:http://blog.csdn.net/brucexu1978/article/details/7610358 在开发过程中,尤其是Framework相关开发时,有时候需要重新编译资源文件.编译顺序和注意事项如下: 1,资源文件位置:frameworks/base/core/res 2,编译后生成的文件:framework-res.apk 另外com.android.internal.R会更新这个R.java所在目录为/out/target/common/R/com/android…

在屏幕上搜索图片并返回图片所在位置的坐标的AutoHotkey脚本源代码(类似大漠插件)

;~ 在屏幕上搜索图片并返回图片所在位置的坐标的AutoHotkey脚本源代码(类似大漠插件) ; https://www.autohotkey.com/boards/viewtopic.php?t=17834 ;===========================================;~ 以前此文章的标题不太好所以重新修改标题后重新发布;~ 此脚本的优点是速度快,功能可靠,用途广泛,不依赖JPG图片和DLL文件,纯AHK代码实现,非常干净,非常纯洁,非常完美 ;~ 此脚本的缺点…

PIC XC8 EEPROM操作

要做一个报警功能的东东,要求可以通过遥控来改变遥控内容.由于对系统的稳定性要求很高,所以用了看门狗. 可是看门狗复位会引起所有寄存器重置,恢复到默认状态.遥控要改变的内容也被复位了,所以只能借助EEPROM来存储报警标志了. 我用的是MPLAB X IDE +XC8 编译器,XC8在语法上跟PICC有点不一样 EEPROM操作有两种方法,在该存储空间中定义命名变量,或者使用块访问程序来读取或写入EEPROM. 1. EEPROM 对象 __eeprom限定符可用于指示应将变量定位到EEPROM中…

PIC EEPROM问题

1.通过export出来的Hex烧录,EEPROM内容会根据Hex中关于EEPROM的定义而改变. 2.通过编译源文件烧录,如果没有勾选Preserve EEPROM on program则EEPROM中的内容会被修改掉.如果勾选了,则在烧录过程中,似乎会读取EEPROM中的内容,因为在mplab中eeprom窗口可以看到eeprom的内容变为芯片原EEPROM中的内容.…

【转载】芯片级拆解51、AVR、MSP430、凌阳61、PIC，5种单片机，多张显微照片

先秀一张解剖照,放大裁剪,小米1S微距拍摄,800万像素摄像头很给力!今天等待被拆的是5个单片机芯片:(1)凌阳16位单片机SPCE061A ,这是我接触的第一个单片机,最高主频49MHz,32KB的FLASH,2KB的RAM,最大的特点就是集成了音频处功能,可以播放音频文件,带语音识别功能.(2)TI的16位低功耗单片机MSP430F149,非常好用的一款单片机,最高主频8MHz,指令为单周期,60KB FLASH,2KB RAM,特点是超低功耗,官方公布的休眠功耗是2uA,本人实测单片机最小…

51,PIC,AVR单片机它们的优点缺点都有哪些？

我有幸接触了几款单片机,并用它们做了一些项目.现在想做个小总结,谈一下自己用各种单片机的感受.仅是个人意见,仁者见仁智者见智. 传统51,我想我就不多说了,适合菜鸟入门,容易上手,价格一般(从性价比方面说). 缺点:解密容易(传统51说:谁让咱出道早呢,大家都研究我,哎!哭......)一般功能也有,, 但AD.eeprom等功能要靠扩展,增加硬件和软件负担. IDE环境推荐 keil.编程器自己自制ISP下载线就行,好做,成本5元左右. PIC:我就是学这款单片机入门的,pic的好处就是各个型…

痞子衡嵌入式：飞思卡尔i.MX RT系列MCU启动那些事（13）- 从Serial(1-bit SPI) EEPROM/NOR恢复启动

大家好,我是痞子衡,是正经搞技术的痞子.今天痞子衡给大家介绍的是飞思卡尔i.MX RT系列MCU的Serial EEPROM/NOR恢复启动. 在前几篇里痞子衡介绍的Boot Device都属于主动启动的Primary Boot Device(Serial NOR/NAND, Parallel NOR/NAND, SD/eMMC),试想一下如果遇到这样的情况,你选择启动的某个Primary Boot Device正常工作一段时间后某次开机突然因为某种未知原因无法启动了,此时系统无法正常工作,但如…

Driving proportional valves from microcontroller

Driving proportional valves from microcontroller I am looking to drive a current regulated proportional (solenoid) valve that needs up to 85mA @ 24V from a microcontroller. So far I found this circuit that looks pretty straightforward: What are other…

AN2820 Driving bipolar stepper motors using a medium-density STM32F103xx microcontroller

AN2820 Driving bipolar stepper motors using a medium-density STM32F103xx microcontroller Introduction This application note describes how to achieve compact size, high speed and low cost with less resources when driving bipolar stepper motors using t…

PID DC/DC Converter Controller Using a PICmicro Microcontroller

http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1824&appnote=en011794 In many applications, a DC/DC Converter is used to produce a regulated voltage or current, derived from an unregulated power supply, or from a battery. Ex…

Make a printer-port EEPROM programmer and dongle

You can easily use a PC's printer port for serial-EEPROM programming. You can use a device-programmer circuit used to program the MicroWire serial EE-PROM 93CXX (Figure 1). The circuit is so simple that any further simplification seems impossible. Th…

Tiny microcontroller hosts dual dc/dc-boost converters

Batteries are the typical power sources for portable-system applications, and it is not unusual these days to find microcontroller-based portable systems. A variety of microcontrollers operates at low power-supply voltages, such as 1.8V. Thus you can…

Unused port adds a PWM/analog channel to a microcontroller

Low-cost, 8-bit, single-chip microcontrollers are stingy when it comes to on-chip PWM (pulse-width-modulation) resources. The use of a PWM resource often forces a designer to sacrifice a capture/compare or timer channel because the PWM channel shares…