NanoPi NEO is an $7.99 version of the Raspberry Pi Zero you can actually buy
The NanoPi NEO(abbreviated as NEO) is another fun board developed by FriendlyARM for makers, hobbyists and fans. Features CPU: Allwinner H3, Quad-core Cortex-A7 Up to 1.2GHz DDR3 RAM: 256MB/512MB...
View ArticleContiguous memory map to Malis
We have two Malis on our board Odroid XU4 . We wish to create a large image, with one Mali creating half the image and the other Mali creating the other half. We also want the image to be memory...
View ArticleWiFi with ARM
(image originates from www.cnx-software.com) For a while, the easiest way to connect a microcontroller to wireless network in a cost effective way, was by using the ESP8266. -But it's no longer the...
View ArticleIs there CMSIS API documentation?
Hello, I am using an Atmel SAMD21 MCU that is based off the ARM Cortex M0+. I am programming it via the Arduino IDE. I notice that the Arduino IDE includes the CMSIS library. Below is an example call...
View Article求解，高通8909启动流程中验证镜像的合法性
从文档上看，高通的启动流程大致是RPM PBL -> APPS PBL ->SBL1，SBL1负责验证和加载TZ,RPM,LK镜像。 问题1:APPS PBL是如何验证SBL1的合法性的，签名和验证的密钥存在哪？密钥可以改吗？ 问题2:SBL1如何验证TZ,LK镜像的合法性的，签名和验证的密钥存在哪？密钥可以改吗？ 希望对高通有所了解的能回答一二，感谢！
View ArticleNanoPi NEO is an $7.99 version of the Raspberry Pi Zero you can actually buy
The NanoPi NEO(abbreviated as NEO) is another fun board developed by FriendlyARM for makers, hobbyists and fans. Features CPU: Allwinner H3, Quad-core Cortex-A7 Up to 1.2GHz DDR3 RAM: 256MB/512MB...
View Article如何在HiKey上部署streamline
1. HiKey 介绍HiKey（LeMaker™ version） 搭载了Kirin 620主控芯片，集成了8核 64位Cortex-A53 处理器，以及Mali450-MP4高性能图形运算处理器，配置1GB/2GB LPDDR3(800MHz)内存，8GB eMMC存储。 HiKey 还是一款符合Linaro
View ArticleHow to disable GPU hardware accelerate?
Hi, I have a board odroid xu3 running android 4.4. Recently I want to compare the performance of hardware rendering (that is, gpu do the rendering work) and software rendering (cpu do the rendering...
View ArticleCache Coherence
Hi , I am working on ARM Multiprocessor. The Following is scenario for Cache coherency . Please let me know if it is valid. 1. Bring Core 1 out of reset. 2. Bring Core 2 out of reset. 3....
View Article求助，刚刚收到的nRF52832开发板进入BOOTLOADER模式，没法玩了。
开发板这周礼拜一刚好收到了，本来还想好好玩玩的，没想到出了些问题，程序跑不起来了。 因为收到板子之前看过社区里kevin-zhao分享的帖子初识Nrf52...
View ArticleSMP ARM cores hang when using DMA and two cores enabled
Hi, I am experiencing A complete arm core hang when both of the cores are employed in SMP mode and using DMA. I was tested with Linux kernels 3.10, 4.1 and 4.6 in SMP mode. SOC used is Altera Cyclone...
View ArticleCortex-M instruction set test?
Does there exist an instruction set test for the Cortex-M series? This might also be known as a CPU instruction test, or by other terms... Such test would be used to diagnose potentially faulty CPU...
View Article每天睡前你会玩电子设备吗？
今天看到一个有趣的讨论，想和社区的朋友们聊一下。 大家睡前必定会玩手机，PAD或者其他电子设备吗？ 随着ARM的合作伙伴们推出越来越多的智能电子设备，我们日常生活中已经不能离开它们了。 比如斑竹每天晚上睡前不刷手机就睡不踏实，基本要把电用完才睡觉。 不知道是不是每一个用户都是这样的？
View ArticleLinaro Release Notes
Linaro Release 16.06 Linaro Release 16.05 Linaro Release 16.04 Linaro Release 16.03 Linaro Release 16.02 Linaro Release 16.01 Linaro Release 15.12 Linaro Release 15.11 Linaro Release 15.10 Prerequisite...
View ArticleUsing Linaro's deliverables on Juno
1. Preface 2. Prerequisites 3. Initializing a workspace 4. Building from source 5. Running the software 5.1 Prebuilt configuration 5.2 Built from source 5.3 Booting the board Addendum A: Building the...
View ArticleUsing Linaro's deliverables on an FVP
1. Preface 2. Prerequisites 3. Initializing a workspace 4. Building from source 5. Running the software 5.1 Prebuilt configuration 5.2 Built from source 1. Preface This document pertains to Linaro...
View ArticleUsing Linaro's deliverables on TC2
1. Preface 2. Prerequisites 3. Initializing a workspace 4. Building from source 5. Running the software 1. Preface This document pertains to Linaro Release 16.06. Click here for release notes and...
View Article[GDB]cannot insert breakpoint, cannot access memory at address?
Hello guys, I am trying to debug QEMU VM on FVP, I have compiled GDB 7.11.1(the latest version) on FVP, and all things go so far well till I inserts breakpoint in GDB. I runs QEMU with the argument...
View ArticleARM DSP库中__SIMD32(addr) 宏定义？
/** * @brief definition to read/write two 16 bit values. */ #define __SIMD32(addr) (*(int32_t **) & (addr)) 为什么不写成 #define __SIMD32(addr) (int32_t *) (addr) 有什么好处？
View ArticleST的NUCLEO-F031K6开发板上手三部曲
【开箱】 拿到开发板，真是惊讶，如此之小巧： 说明先看看 板子正面 板子背面 再看看板子细节 【通电】 在通电前已安装过：ST-LINK/V2-1（STM32 ST-LINK Utility_v3.7.0）。 按说明上电，可见绿灯闪动。 拔去4，5脚间的短路跳线了，绿灯闪动频率变快.。
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