A bootloader shall be small and concise. I very much like bootloaders which do not need a ‘special’ program on the host, so I prefer a simple terminal for this. While porting my serial bootloader to the NXP FRDM-K64F board, I have found RealTerm which offers a lot of cool features:
RealTerm
Sometimes it is very convenient to load a new firmware to a board without the need for a hardware debugger. This is usually done with a bootloader. The NXP Freedom and Tower evaluation boards have on-board debug device/microcontroller (OpenSDA) which can load different firmware implementations like CMSIS-DAP/mbed, P&E Multilink or a Segger J-Link OpenSDA applications. Both mbed and P&E implemenations support to program the board with drag&drop: simply send a file to a virtual MSD (Mass Storage Device) to get it programmed. The latest Segger OpenSDA firmware has this ability added now too: Programming the board with a virtual MSD device:
Virtual MSD Device
So this is my current week-end BBQ project: Pulled Pork out of the BBQ smoker :-). As a teaser, this is how the result looks like: tender, juicy slow-cooking smoked pork meat out of the smoker:
Pulling the pork
Pulled Pork Sandwich
3.5″ Diskette Drives are not widely used any more: CDs, DVDs, memory/thumb drives and downloads from the web are the usual distribution method these days for software. Back a few years ago, software was distributed on one or many 3.5″ diskettes, and even before that time on 5 1/4″ floppy disk drives. So what to do with all these not-used-anymore hardware? Play music with it 🙂
Floppy Music
My wife tells me that I have too many boards on my desk. That is only *partially* correct: there are many, but not *too* many. But I’m working on too many tasks, but that’s a different aspect :-). I’m using more and more the Kinetis SDK V2.0, and as a result of this I have multiple SDKs installed on my machine. Because with the SDK V2.0 I get a download for each device/board installed (see “First NXP Kinetis SDK Release: SDK V2.0 with Online On-Demand Package Builder“). So my list of SDK folders is growing, as shown with the ‘New SDK 2.x’ wizard in Kinetis Design Studio:
Multiple Kinetis SDKs
The same time, the amount of free disk space is reducing. What if I could combine all these SDK’s?
Sometimes it is all about knowing the simple tricks in Eclipse which make life easier. Like this one: how to have a split editor view so I can edit multiple different sections of a source file:
Split Editor View in Eclipse
The Seefelder Spitze is a mountain peak near Seefeld (Tyrol) at 2220 meters high. That peak was the goal of a hiking tour in the Karwendel Alps:
Just below the Seefelder Spitze, still lots of snow up there
While developing a data logger for an advanced UAV inertial sensor I had to think about the quote below several times:
“There are two ways of constructing a software design: One way is to make it so simple that there are obviously no deficiencies, and the other way is to make it so complicated that there are no obvious deficiencies. The first method is far more difficult. It demands the same skill, devotion, insight, and even inspiration as the discovery of the simple physical laws which underlie the complex phenomena of nature.”
C. A. R. Hoare
Still my design is not simple, and still I have to discover the not so simple physical laws of that sensor :-(.
Inertial Sensor Setup
That quote from Sir Charles Antony Richard Hoare is so true. In case you did not know: he is the one who developed the quicksort algorithm. With this and all his other work he shaped the software and computer industry. And reminds me about the challenges and difficulties of constructing software……
Happy Constructing 🙂
I don’t know if it is the same for you. But for me, configuring the pins on these new ARM microcontroller is a challenge: Most pins can do multiple functions, such as be used as I²C, UART or GPIO pins.
Configuring the pins ‘by hand’ is difficult, error-prone and usually the first thing I need to do for a new project/device. NXP developed a new tool for this task and previewed it at FTF 2016. It is available now both as web (online) and desktop (locally installed) tool. At FTF it was possible to play with an engineering release: time to get my hands on the public release :-). And as more and more student projects will start using that tool for their boards, I better have a tutorial for it :-).
Desktop Version of Pins Tool
MCU on Eclipse 