Author Archives: Erich Styger

About Erich Styger

Embedded is my passion....

Processor Expert Component *.PEupd Files on GitHub

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The MCUonEclipse GitHub repository is great for everyone which is familiar with Git or GitHub. Prevsiouly I was hosting my Processor Expert components on steinerberg.com. Exporting and maintaining the Processor Expert Update Files (*.PEupd) one by one is a lot of effort. GitHub makes things a lot easier, but again: you need to be familiar with it. And not everyone is ‘gitting’ yet. To help the rest of the world (the non-Gitter), I have now published Processor Expert update files for all the components in the repository, so it is easier to install them.

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Adding/Removing Floating Point Format for S08 Projects

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Usually I do *not* use floating point numbers in my projects. For this, I select ‘None’ during the project creation in CodeWarrior for MCU:

No Floating Point Selected

No Floating Point Selected

But what if I need to change my mind later? How to change such a ‘no-floating-point-needed’ project to one with floating point format support?

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Adding USBDM to CodeWarrior for MCU10.4

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If you are following my recent posts, then you know I started using USBDM on OpenSDA as an alternative run control solution. Now with the advent of MCU10.4, the question is: how to use USBDM with it, because the USBDM installer obviously only knows the version up to MCU10.3?

USBDM 4.10.4a Installer

USBDM 4.10.4a Installer

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Can MCU10.4 recover a bricked OpenSDA Freedom Board?

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Ok, this one might not work for everyone. And maybe I’m seeing a ghost. But a nice and real one, at least for me :-) . It seems that with the new CodeWarrior for MCU10.4 installation I was able to recover a bricked OpenSDA FRDM-KL25Z board :shock:

Recovered OpenSDA Board

Recovered OpenSDA Board

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Switching Processor Package – Simplified in MCU10.4

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I continue to uncover new things in CodeWarrior in MCU10.4 :-) . Remember my post “Switching Processor Package in Processor Expert” about the steps needed to switch from one microcontroller package to another? Although that’s not something I need to do on a daily base, this process is simplified in the new version 10.4 :-)

Select Package

Select Package

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Added Write Protection Pin to FatFsMemSDHC

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What was missing in the FatFsMemSDHC component presented here is support for a ‘write protection’ pin. Well, that write protection is not present on micro-SD cards, and on normal SD cards it is a simple plastic thing with no real hardware meaning: it is all up to the software to respect it. While my other SD card components have support for such a write protection detection, it was lacking for the FatFsMemSDHC (for Kinetis) component. Time to fix this!

SD Card Lock

SD Card Lock: an SD-Card, a micro-SD Card and a micro-SD card adapter, both with write-enabled

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Review of CodeWarrior for MCU10.4

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Freescale has released this week an updated version of CodeWarrior: version 10.4. I’m usually not switching a tools version in the middle of a university semester. Unless I see a real benefit, and the risk is low. Well, I have used it now for a few days, and I have decided to move my projects from 10.3 to 10.4. Why? Read on…

CW for MCU10.4

CW for MCU10.4

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Serial Bootloader for the Freedom Board with Processor Expert

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Bootloaders are a very useful thing: it allows programming an application file without a debugger. This makes it ideal for upgrading a system in the field.

Usually, there are application notes and examples from silicon vendors available. But typically they are for a certain microcontroller, and hard to change it to another system without a lot knowledge about its implementation. What I need for a project based on the FRDM-KL25Z is a bootloader which shall be small and portable. As I’m using Processor Expert to keep my applications portable across different microcontroller families: why not create a bootloader with Processor Expert components?  With the Processor Expert drivers available, things can get a lot simpler compared to the ‘traditional’ approach. With less than 10 KByte footprint?

Serial Bootloader made with Processor Expert

Serial Bootloader made with Processor Expert

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USB CDC with the FRDM-K20D50M

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Good news for everyone owning the FRDM-K20D50M board: I have extended the FSL_USB_Stack with USB CDC device class support for the K20D50M :-) .

USB CDC Test Application with the FRDM-K20D50M

USB CDC Test Application with the FRDM-K20D50M

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Debugging FRDM-KL05Z with USBDM

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I mentioned in “Debug External Processors with USBDM and Freedom Board” post that I had a problem to debug the FRDM-KL05Z with USBDM. Well, after a long night with some sleep, with more thinking and searching, finally I have it resolved: I can debug my FRDM-KL05Z with USBDM :-)

FRDM-KL05Z Debugging with USBDM

FRDM-KL05Z Debugging with USBDM

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