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NucleoF429 基础应用1: TIM1+ADC+USART 波形显示
Xiaoya
上次竞答获赠的NucleoF429到手好几天了,陆续看了一些资料,180MHz的主频比起之前48MHz/72MHz的芯片来说,性能提升不少,外设功能也一应俱全。但也没玩什么高端的(比如图像处理,跑OS等),也体现不出180M的性能优势来。所以还是按照惯例,先跑一个简单的Demo再说。(上次拿到F031K6时,说要做一个USART的波形显示,后来一忙也忘了,这次顺便补上。) 这个Demo主要功能是使用Timer定时触发ADC采样…
June 7, 2016
展望计算机视觉的未来
Song Bin 宋斌
原文地址:
Seeing the Future With Computer Vision
作者:
freddijeffries
在2016年,自动化成为了一个众人关注的焦点。物联网的兴起就是这一风潮的一部分,并且这一潮流扩宽了我们的眼界使我们意识到生活中有这么多方面可以进一步提高效率。只要允许设备、传感器和其他技术产品,能够互相沟通、共享数据、并根据数据来做出明智的决定, 我们可以减少人类的直接输入但仍然保持周围世界的运转…
June 7, 2016
Introduction to ARM's System Trace Macrocell
Matt Sealey
This article aims to introduce the ARM System Trace Macrocell (STM), outlining what it is, its basic operation, and why one might want to use it. Example code will be provided, minimally targeted at the…
June 6, 2016
16核!华为自主架构处理器突然杀出:主打服务器
wangyong
作为国产处理器的优秀代表,华为麒麟已经在移动领域开辟了一片天空,而现在华为也悄然进入了服务器市场,而且上来就是用了非公版自主架构! 在日前的中国十二五科技创新成就展上,华为展出了其第一台ARM平台服务器“泰山”(Taishan),配备自主研发ARM架构64位处理器“Hi1612”,采用台积电16nm工艺,拥有多达16个核心,兼容ARMv8-A指令集。 华为表示,除了存储单...
June 5, 2016
Digital world and neuroscience on a collision course?
Karthik Ranjan
Something of major significance happened on Friday June 3rd . The computing world collided with the world of nueroscience, here are the two relevant referneces:
The Independent reported that Elon Musk…
June 5, 2016
[Quick tips] Use ffmpeg to convert pictures to raw RGB565
Myy
Here's a quick tip to convert pictures to raw format with
FFMPEG
, in order to use them as a texture in OpenGL, with no extra conversion :BMP filesffmpeg -vcodec bmp -i /path/to/texture-file.bmp -vcodec…
June 4, 2016
Deep Learning Episode 1: Optimizing DeepMind's A3C on Torch
Mark O'Connor
In February, a new paper from Google's DeepMind team appeared on arxiv. This one was interesting – they showed dramatically improved performance and training time of their Atari-playing Deep Q-Learning…
June 3, 2016
STM32F429ZIT6U-SysTick
dd
SysTick—系统定时器是属于ARM内核中的一个外设,内嵌在NVIC中,一个24bit的向下递减的计数器,计数器每计数一次的时间为1/SYSCLK。SysTick—系统定时有4个寄存器,如下图,详细参考CM4内核编程手册(英文)
http://pan.baidu.com/s/1nuSg8fn
有的时候程序需要用比较精确的延时,所以编写一个精确的延时程序非常有必要,特别是在写一些对时序要求比较高的程序…
June 3, 2016
Eye Heart VR
Freddi Jeffries
Welcome to the next installment of my VR blog series. In previous VR blogs we’ve considered the importance of clear focus to a VR experience, as well as the essential requirement to keep ‘motions to photons…
June 3, 2016
STM32F429ZIT6U-RCC
dd
这次配置了一下板子的时钟(RCC)根据cube或者官方参考手册和数据手册(中文的)
http://pan.baidu.com/s/1nuSg8fn
根据cube配置个人感觉比较直观容易理解,也可以看着参考手册来配(P107)直观效果么 就是闪闪灯啊,哈哈哈。不同时钟频率下,闪烁速度不一样,延时目前用的就是软件延时。我有一个逻辑分析仪,很便宜的,频率不高,试着抓了下波形,没有示波器,勉强用用时钟配置如下…
June 2, 2016
对于基于ARM® Cortex®-M0内核的一些见解
chen000000009
基于ARM® Cortex®-M0的MCU我也使用过不少,包括STM32-L0系列和STM32-F0系列,以下就来谈一下我的使用感受和见解吧 首先,对于Cortex-M0的产品来说,其性能不会太好。这个系列的MCU属于ARM-v6的架构,而像Cortex-M3、 Cortex-M4和 Cortex-M7等都是采用的ARM-v7的架构,因此首先从架构上面来说,这个Cortex-M0就比其余M系列的处理器要落后…
June 1, 2016
2016 ARM ST mbed 知识竞赛社区纪念品
水伯
在赢取免费144pin mbed开发板(Cortex-M4)2016 ARM ST mbed 知识竞赛中答对题目。获得斑竹私人奖励的ARM社区纪念品一份。现已收到了社区纪念品,图片如下: 1,很漂亮的礼品盒包装。
2,猜猜看是啥礼物?
3,很精致卡包,上面还有ARM的Logo。
4,看看包里的风景。还有钥匙链,呵呵。。。
这次活动尽管没有赢取144pin…
June 1, 2016
STM32F429ZIT6U_TEST
dd
昨天拿到的板子,比想象中大,对比之前手里的一块nucleo板个头差的不是一点两点。拿到手,用keil跑了个LED,打算官方例程都跑一遍吧。开发工具么有多种选择,常用的是keil IAR ,我都有用mbed目前没有用,操作很简单的,跑跑自带例程可以的还有就是stm32cubemx 挺好用的,不过习惯标准外设库的有可能不太习惯cube里的HAL库,不过用习惯了都一样,看自己的选择说实话,cube配时钟挺好…
June 1, 2016
RaspberryPI3学习笔记0x05——配置ftp服务
奋斗小米
最近,在苦学pathon,深深被他的强大折服。由于PI都是通过远程上去的,来来回回文件的交换都是通过一个U盘来实现的,好麻烦的说。于是,通过百度找到一种开源FTP服务器vsftpd,很实用,也很强大。0x00 安装vsftpd服务器文件大小约500KB,下载约1分钟左右,看你的宽带网速,命令如下:sudo apt-get install vsftpd0x01 启动FTP服务sudo service…
May 31, 2016
Stride argument in OpenGL ES 2.0
Myy
I'm putting this information here, as it took me way more time than it should to understand how the stride argument works in glVertexAttribPointer.This argument is extremely important if you want to pack…
May 31, 2016
第十九届北京科博会看什么?
James Wang 王建荣
2016年5月18日,第十九届中国北京国际科技产业博览会开幕,展会持续到5月22日。本届科博会的主题是“推动科技创新,引领产业转型”。今年科博会的热点是VR 、机器人、各类初创企业;无人机的风头比去年要小的多了。所有这些都和今年国际国内展会研讨会沙龙基本一致,VR很热,机器人很热。还有应和“全民创业、万众创新”的潮流。第十九届北京科博会看什么? 阿牛哥和大家一起去看看!…
May 31, 2016
[新闻]ARM 发布最新高端移动技术,提升沉浸式体验
Song Bin 宋斌
新闻摘要:ARM高端IP将应用于2017年推出的旗舰型移动设备,重新定义
虚拟现实(VR)与增强现实(AR)体验
ARM® Mali™-G71 图形处理器以全新架构为基础,提供卓越的能效和性能表现全新ARM Cortex®-A73 能满足最严苛的使用案例,并让最佳能效与效率的状态更加持久产品已针对
最新10纳米FinFET工艺技术
进行优化
2016年5月30日,北京讯——ARM今日宣布推出最新高端移动处理器技术组合…
May 30, 2016
用MicroPython在STM32F7DISC上做阶乘计算
shaoziyang
一直有网友担心,MicroPython运行是否足够快,性能够不够用。所以我做了一个小测试,用python计算阶乘,看看速度到底会有多快。我们先编写一小段测试程序,这段代码先计算阶乘,然后计算总的耗时。测试程序如下:!--[CodeBlockStart:df3f3676-d137-45f1-96e9-413d02ca3131][excluded]-->import time def fact(n)…
May 30, 2016
The final ISA showdown: Is ARM, x86, or MIPS intrinsically more power efficient?
cray
One of the canards that’s regularly trotted out in discussions of ARM vs. x86 processors is the idea that ARM chips are intrinsically more power efficient thanks to fundamental differences in the ISA …
May 30, 2016
PowerPC vs. Arm (or more specifically e200z0 vs. Cortex-M4)
cray
The end of the year is approaching, but I’d like to have one last delta before taking some time off. PowerPC vs. Arm, seems like an appropriate stand-off.
May 30, 2016
Exploring How Cache Coherency Accelerates Heterogeneous Compute
Neil Parris
This blog focuses on some of the hardware innovations and changes that are relevant to shared virtual memory and cache coherency, which are components of the HSA hardware specification.
May 29, 2016
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