The Year of AI

Machine Learning

Deep Learning

AI

It's all about computing capability under less resource consumption. The winner is who can perform more calculation in one clock cycle.

Xilinx Vivado

My first project

How to switch GCC version on Ububtu

I had installed GCC version 4.9 and 5.4 from the Ubuntu repositories. How to switch GCC version?
You can switch the symlinks yourself manually, but using "update-alternatives" makes it easy.

[ ]$ sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-4.9 100 --slave /usr/bin/g++ g++ /usr/bin/g++-4.9
[ ]$ sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-5 50 --slave /usr/bin/g++ g++ /usr/bin/g++-5 

Now you can switch between these versions by using:

[ ]$ sudo update-alternatives --config gcc

Change GCC 9 (Ubuntu 22.04)

[ ]$ sudo apt install gcc-9
[ ]$ sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-9 100

The 2 Good Books

System on Chip Interfaces for Low Power Design (PDF)

Paperback: 406 pages
Publisher: Morgan Kaufmann; 1 edition (December 22, 2015)
Language: English
ISBN-10: 0128016302
ISBN-13: 978-0128016305

Digital Design and Computer Architecture. ARM Edition (PDF)

Paperback: 584 pages
Publisher: Morgan Kaufmann; 1 edition (May 6, 2015)
Language: English
ISBN-10: 0128000562
ISBN-13: 978-0128000564

Cortex-M on Mac OS

Build Toolchain

• Xcode
• Install MacTex
• Prepare source tarball 

Copy the src release package into ~/mac-build/ directory
$ cp gcc-arm-none-eabi-5_3-2016q1-20160330-src.tar.bz2 ~/mac-build 

Prepare source codes
$ cd ~/mac-build
$ tar xjf gcc-arm-none-eabi-5_3-2016q1-20160330-src.tar.bz2
$ cd ./gcc-arm-none-eabi-5_3-2016q1-20160330/src
$ find . -name '*.tar.*' | xargs -I% tar -xf %
$ cd ..

• Build the toolchain

Start building the toolchain.
$ ./build-prerequisites.sh
$ ./build-toolchain.sh

Cortex-M Platform

[TTBD] TI, NXP, ?

逝去的 2015

Po 文驟減的一年、沒了閒情逸致。庸庸碌碌的 2015 ...

HOWTO compile Android in Ubuntu 14.04.1 LTS

http://nathanpfry.com/how-to-prepare-ubuntu-14-04-lts-trusty-tahr-to-compile-android-roms/