Configuration Data: Using the Internal FLASH instead of an external EEPROM

Many applications need to store persistent (non-volatile) data at runtime: configuration data, error logs, sensor data, calibration values, etc. The question is: where to store that data? If it is only a few kBytes, an SD card or similar is an overkill. Adding an external EEPROM? Sure, that works, but adds an extra part to the design. Some microcontroller have internal EEPROM. But what if not? Why not using the microprocessor internal flash memory?

Internal FLASH vs. external EEPROM

Internal FLASH vs. external EEPROM

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Tutorial: Freedom Board with Adafruit Ultimate GPS Data Logger Shield

Many times I start with a project and tutorial, only to get interrupted for emergency tasks and assignments. For a long time I wanted to add GPS (Global Positioning System) functionality to one of my projects. While I started a few months ago on this, it took me until this week-end to finish the at least the first part: a SD card data logger with GPS :-): I calculate global positioning and time information, can use it in Google maps and store it on a SD card:

Adafruit GPS Data Logger Shield on a FRDM-KL25Z Board

Adafruit GPS Data Logger Shield on a FRDM-KL25Z Board

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How to Add Register Details View in Eclipse

The standard Eclipse registers view only shows the core registers:

Standard Registers View in Eclipse

Standard Registers View in Eclipse

I think it would be great to have a view to see all the device peripheral registers too?

Embedded System Registers View

Embedded System Registers View

If you want the same, then this article is for you. It works both for stock Eclipse and Freescale Kinetis Design Studion (KDS) 🙂

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Tutorial: Data Logger with the FRDM-K64F Board

The Freescale FRDM-K64F is a great board for data logger applications: it has a powerful ARM Cortex M4F with 120 MHz, 1 MB Flash and 256 KByte RAM. Best of all: it already has a micro SD card socket on the board :-).

Data Logger with FRDM-K64F

Data Logger with FRDM-K64F

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Reducing Compile Time in Eclipse with Parallel Build

Feeling that building a project in Eclipse (including Kinetis Design Studio) takes a long time? Then probably the ‘parallel build’ option is not enabled in your project: Using parallel build option reduces the needed time by factors. To give an example, to build a project with 56 source files takes 32 seconds without parallel build enabled:

no parallel build

no parallel build

With parallel build enabled this gets reduced down to less than 10 seconds:

Parallel Build Enabled

Parallel Build Enabled

🙂

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Constructing a Classroom IDE with Eclipse for ARM

For the next semester I will do things differently in my advanced embedded systems programming course (INTRO) at the University of Lucerne: Instead of using the Freescale provided CodeWarrior, we will use a DIY tool chain for ARM with Eclipse Kepler.

Eclipse Kepler Ready for Classroom Usage

Eclipse Kepler Ready for Classroom Usage

That way we we can offer students an open and convenient tool chain for their lab work, course assignments and own projects both at work and at home. So this post is about spending about 30 minutes to build your own tool chain which then can passed to students and coworkers so they have a complete toolchain installed in a few minutes.

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C/C++ Watchpoints with Eclipse Kepler

In “Watchpoints: Data Breakpoints” I used the Eclipse based CodeWarrior to set breakpoints so the debugger stops when my application is writing or reading a certain memory location. That CodeWarrior is based on an earlier Eclipse version, and things are different in Eclipse Kepler and not so easy to find. So here is how I can use watchpoints in Eclipse Kepler:

Watchpoints in Breakpoint View

Watchpoints in Breakpoint View

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