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Testing cWebSocket
These are the steps I did to compile the cWebSocket (https://github.com/m8rge/cwebsocket) : alan@machine:~/cwebsocket/lib$ gcc -c websocket.c -o websocket.o alan@machine:~/cwebsocket/lib$ ar rcs...
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Testing LLVM LIBC++ on NuttX
Clone NuttX: $ git clone https://bitbucket.org/nuttx/nuttx Clone NuttXās Apps: $ git clone https://bitbucket.org/nuttx/apps Clone libc++ for NuttX: $ git clone https://bitbucket.org/acassis/libcxx...
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Taking screenshot/printscreen over ADB
This is the way I use to take screenshot of Android screen over ADB: $ adb shell screencap -p /sdcard/screencap.png && adb pull /sdcard/screencap.png
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Using an Android phone as WebCAM over USB
I was looking for a way to use my smartphone as webcam and found this page: http://www.skipser.com/p/2/p/android-as-webcam.html I tried the second option listed in the post, an application called...
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Entrevista sobre Sistemas Embarcados
Eu fui entrevistado pelo canal Mundo da ElĆ©trica para falar sobre Sistemas Embarcados, vocĆŖ pode assistir a entrevista logo abaixo: Espero que vocĆŖs tenham gostado, qualquer dĆŗvida deixe sua pergunta...
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Comparing NuttX with Zephyr
Today I decided to do a basic test comparing a small NuttX hello-world against the zephyr hello-world. First let explain that Iām a NuttX contributor and maybe Iām a little bit biased, but I tried to...
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Using PVS-Studio to find bugs in C/C++
I heard a news that pvs-studio was used to find around 27000 bugs in the Tizen. Then I decided to test it here. I installed it using their Debian/Ubuntu apt repository as explained here:...
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Log of NuttX USB Mass Storage Debugging
stm32_usbinitialize: called NuttShell (NSH) nsh> msconn msconn [2:100] nsh> mcsonn_main: Creating block drivers mcsonn_main: Configuring with NLUNS=1 usbmsc_configure: Enter! mcsonn_main:...
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Issues compiling OSD Lyrics
I love the OSD Lyrics, it is very good the see music lyrics in the Linux computer. After cloning it from https://github.com/osdlyrics/osdlyrics and executing: $ ./autogen.sh ... checking for GTK2......
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Renaming multiples files on Linux
Today I rediscovered the rename command (yes I used it in the past and documented it here, but I forgot). I needed to rename name *.cpp files to *.cxx, then I used: $ rename 's/\.cpp$/\.cxx/' *.cpp...
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Reduzing Memory consumption: Smaller Vector Tables
I want to reduce the memory consumption to NuttX in the stm32f103-minimum board to get external SPI NOR Flash with SmartFS and USB Serial Console at same time. After mount the SmartFS partition I will...
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Compiling sigrok and pulseview
Install the dependencies: $ sudo apt-get install automake libudev-dev checkinstall libglib2.0-dev libftdi-dev sdcc python3-dev qt-sdk libboost-system-dev libboost-thread-dev libboost-filesystem-dev...
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Creating a HC-SR04 driver for NuttX
In this post I will explain how I did the HC-SR04 driver for NuttX. I think this is the first time I try to explain how to create a driver for NuttX, oh wait! It is not! The first time was this post:...
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NuttX Channel #016: Using the HC-SR04 to measure distance
I create a new video explaining how to use the ranging sensor HC-SR04 on NuttX:
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Keeping your bitbucket repo in sync with upstream
I imported the NuttX repository to my bitbucket account with name nuttx_nyx (for NyX board). Then I want to keep it in sync with mainline/upstream without accessing the bitbucket page to click on...
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Programming Smoothieboard V2 Mini
Iām testing the Smoothieboard V2 Mini The JP10 (BOOT2) is in the position 0 (tied to ground) because I will program it using SWD instead using the LPCScript DFU/bootloader. First we need to clone the...
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Counting number of commits
You can count the number of commits between two commits these way: git log ac93d4bda9..77fadbdd0d4 --pretty=oneline | wc -l It is very useful when you want to know number of commits between to package...
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Home Assistent
This is the probably the fourth home automation project that cited here. The project page: https://home-assistant.io It has integration with NEST products, Hue lamp and many other services. Thanks Fred...
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