In “Blinky LED with openHAB on Raspberry Pi” I have used openHAB on a Raspberry Pi to control an LED attached to the Pi, and in “Controlling NXP Freedom Board RGB LED with openHAB and Raspberry Pi” I have explored how to connect a NXP Freedom Board over USB CDC to the Raspberry Pi. In this article I’m going to combine both: to control the LED on a NXP Freedom board remotely with openHAB on the Raspberry Pi.
ColorPicker with openHAB and FRDM-KL25Z
My preferred variable format in Eclipse is hexadecimal (see “Debugging Variables in Hexadecimal with Eclipse“). However, this does not work well with floating point variables:
Floating Point Variables in Eclipse Variables View
The above view shows all variables having the value 0x0 (zero), but that’s actually not really true.
Many times it is very useful to debug multiple boards at the same time. For example if I’m debugging a communication stack between two boards: that way I can debug the protocol on both sides. Eclipse is a great framework which allows that. This post shows how to debug multiple boards (e.g. the NXP Freedom boards) in parallel from the same Eclipse IDE using GDB and the Segger J-Link:
Two NXP Freedom Boards debugged at the same time
Waiting in the cold in the early morning can have an aesthetic aspect:
Ice Flowers
When ice builds beautiful structures on glass we call it ‘Eis Blume‘ (‘Ice Flowers’). In the past this happened on the windows in unheated buildings. These days it is a rare species with all the heated building. This one is more like snow flakes building up nice structures. With the sun coming up in the background their beauty will be gone very soon….
Happy Icing .-)
The reset and signal line of a microcontroller is probably the most important signal to a microcontroller. And if things go wrong, then a first thing to check is the reset line. So having control over reset is an important aspect for embedded development. You would think that if you download a program to a microcontroller, the debug probe would put the device into reset at the start with a short pulse like this:
Reset Signal in Logic Analyzer
One of the first machine I used for development many years ago was a Apple Classic Macintosh computer. My days of development with Pascal and Modula-2 are long gone. But with the availability of 3D printers I can print a Classic Mac :-). But now it is not used for development: I use it to charge an Apple Watch:
3D Printed Apple Watch Charging Station
By default, there are no Undo/Redo toolbar buttons in the Eclipse toolbar. With Eclipse as an open and extensible framework, how to add them?
Undo and Redo Toolbar Buttons in Eclipse
With the start of the new year 2016 I have published a new McuOnEclipse component release with the following major updates:
256 NeoPixel Matrix with FRDM-KL25Z
I’m not much monitoring what is happening on Kickstarter or Indiegogo, only for time reasons, but maybe I should? For a while I’m looking for the next level for the tinyK20 project: better and more powerful microcontroller with touch display/graphic LCD. And when I see a Freescale/NXP Kinetis microcontroller on a crowd funding platform like this one, I hardly can resist 😉 :
Blaze Board (Source: http://kck.st/1S0HyUp)
MCU on Eclipse 