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Just published a very useful MQTT library and a pair of demo projects illustrating the use of the new MQTT library.
Showcasing both the publisher and subscriber sides of MQTT, these projects demonstrate the remote control of three LEDs on the subscriber using three buttons on the publisher.
More importantly, the projects show how easy it is to create lightweight IoT devices with Tibbo BASIC/C and Tibbo hardware.
Based on the powerful 1GHz Cortex-A8 Sitara CPU from Texas Instruments and carrying 512MB of RAM and 512MB of flash memory, the new LTPP3 board runs our own, highly polished distribution of Linux that is derived from the RedHat line and updated with the latest and greatest kernel and drivers.
The LTPP3 is mechanically and electrically compatible...
Recently I've bought this quite nice boxie, mainly for playing with it.
Here's what I have in mine, I've updated to next available firmware version, 1417, since last one almost got my box broken.
Code:
BusyBox v1.16.1 (2010-09-18 17:01:14 CST) built-in shell (ash)
Enter 'help' for a list of built-in commands.
USBStation2> echo 3 > /proc/sys/vm/drop_caches
USBStation2> free
total used free shared
I thought I finally have to try this myself at last, so I logged in to my Netgear router and started experiments around MIPS assembly.
It isn't much, though, I think I love this architecture It's really easy comparing to x86.
I guess I started at the wrong place. My first step was googling for "MIPS linux syscall", I was trying to find some easy sample code in order to understand how it works and create "hello world" myself. But MIPS is so easy,...
Long time no posting
Today I'm going to describe my so called experience with gentoo stage3 from 2008, linked against uClibc, a tiny C library for developing embedded environments.
I first met uClibc on my router's tomato-usb firmware. I was amazed when I've seen how small memory usage was, even for coreutils-apps.
Since that I was looking for decent inspiration to try out building my own uClibc-based environment. As I previously wrote (I think I did), I once was an assembler...
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It's really easy comparing to x86.
