Compiling Documentation and Presentations: LaTeX

If you are not in the academic world, then you might wonder about that ‘LaTeX‘ in the title.  and no, it is not about that latex rubber material ;-), it is about ‘la-tek’ 🙂

In short, it is a programming language and tool set to ‘compile’ documents. Originally, TeX has been designed and mostly written by Donald Knuth and released in 1978. Since then, it has been evolved and TeX (or LaTeX) is widely used in academia.

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Changing Initialization Sequence in Processor Expert

Now I have implemented a watchdog with Processor Expert for my system. But what I have found out? I ended up with a looping system, and the watchdog did not fire 😦

What went wrong?

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Zumo Robot assembled

This week we were busy with building and documenting the first robots based on the Zumo Robot Chassis PCB.

Chassis Base PCB

The chassis is designed to hook up the FRDM-KL25Z board from Freescale. It is using parts from Pololu (chassis, motors, DC-DC converter, line sensor, H-Bridge, encoders):

ZumoBaseBoardOverview

Zumo Base Board Overview

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Overview of ARM Microcontrollers and Tools

In this semester course, students (and myself too, of course :-)) are building a Mini Sumo Robot. That robot is using the Freescale FRDM-KL25Z board with an ARM Cortex-M0+ on it. Today I’ll give an introduction to the ARM core to the class, and timing is right: this morning I have found an excellent overview about ARM microcontroller and tools written by Jay Carlson.: Getting Started with ARM Microcontrollers.

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Optimized BitIO_LDD Programming with Processor Expert

In my tutorial “Bits and Pins with Kinetis” I showed how to use the BitIO_LDD approach for Bit I/O access. I do not like this LDD (logical device driver) approach for several reasons:

  1. It requires an extra ‘device handle’ passed to the functions, even if such a device handle is not needed or desired.
  2. The code efficiency/size is negatively impacted by this.

Luckily, there is a way to hack around this 🙂

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Zumo Robot Chassis PCB arrived!

Excellent news: I received this week the 40 INTRO Zumo Robot Base/Chassis PCBs, ready to bring the Zumo Robot project based on the FRDM-KL25Z board from Freescale to the next level:

Intro Zumo PCB TopSide

Intro Zumo PCB TopSide

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New CodeWarrior for MCU10.5

On Friday, Freescale has updated CodeWarrior for MCU10 from V10.4 to V10.5, available on http://www.freescale.com/cwmcu10. I have not had much time to use it over the week-end, but here is a list of the things which in my view will make me switch my projects over to 10.5 and use it in my university classes:

  • Smaller: smaller setup and less disk space
  • Faster: faster debugging and flashing
  • Features: Eclipse Juno, detachable editor views, ‘unlimited’ breakpoints, simplified debugger attach/connect/download, and more.

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Mini Sumo Robot with Proximity Sensors

The new semester is approaching fast! And I’m under pressure to get everything lined up and ready. This time, I want the students of the INTRO (Infotronic) course at the Lucerne University of Applied Sciences and Arts to have some fun with building and programming Mini-Sumo Robots 🙂

Opponent View

No chance to escape!

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Mini Sumo Robot Competition running with FRDM-KL25Z

Rigi Schwinget (Roman Koch) (Source: http://en.wikipedia.org/wiki/File:Turnerundsennenschwinger.jpg)

Rigi Schwinget (Picture: Roman Koch)

Every three years, there is the “Eidgenössisches Schwing- und Älplerfest” in Switzerland. A really big thing for us here. If you are not familiar with what this is, then have a read about the long tradition of  Schwingen in Switzerland.

Wondering what “Schwingen” or wrestling has to do with a technology blog? It is about having fun with robots!

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The Freescale OpenSDA Trap: “No Device Available”, or something like that….

Self-Motivation: I write this post in the hope to cut the number of ‘please help me’ emails in my inbox ;-):

If you want to debug one of the Freescale boards with OpenSDA (FRDM-KL25Z, FRDM-K20, FRDM-KL05Z, FRDM-KL46Z48M, FRDM-KL02Z, TWR-KL47Z48M, …), and if you get this dialog …

No Device Available

No Device Available

… then read on.

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